GE Transportation Systems

Applied Practices

4/4/12 First Made For: Various Diesel Engines Rev. F

Note: FOR WIRING APPLIED PRACTICES SEE 84A208000

TABLE OF CONTENTS

1 DEFINITIONS ........................................................................................................................ 4
1.1 Dimensions..................................................................................................................... 4
1.2 Tolerances on Machined Dimensions ............................................................................ 4
2 GENERAL ............................................................................................................................. 6
2.1 Order of Authority ........................................................................................................... 6
2.2 Changes to the Applied Practices .................................................................................. 6
2.3 Tolerances...................................................................................................................... 6
3 HOLES .................................................................................................................................. 7
3.1 Diameter Holes............................................................................................................... 8
3.2 Runout Tolerance ........................................................................................................... 8
3.3 Line Bored and Line Reamed Holes............................................................................. 10
3.4 Linear Dimensioning of Holes....................................................................................... 10
4 ANGLES.............................................................................................................................. 11
4.1 Sheet Metal and Plate .................................................................................................. 12
4.2 Joggles ......................................................................................................................... 12
4.3 Straightness, Flatness .................................................................................................. 13
4.4 Pipes & Tubing Bend Angles........................................................................................ 13
5 THREADS ........................................................................................................................... 13
5.1 General......................................................................................................................... 13
5.2 Screw Threads ............................................................................................................. 14
5.3 Tapped Holes ............................................................................................................... 14
5.4 Pipe Threads ................................................................................................................ 15
5.5 Thread Inserts (Heli-Coil) ............................................................................................. 15
6 CHAMFERS, FILLETS, RADII, COUNTERSINK, SPOT FACE, COUNTERBORE ........... 24
6.1 Chamfers, Fillets, Radii, Countersink ........................................................................... 24
6.2 Spotface, Counterbore (Bolting Surfaces).................................................................... 25
6.3 Countersink of Tapped Holes ....................................................................................... 25
6.4 Tube and Pipe Countersinks ........................................................................................ 25
6.5 External Thread Chamfers ........................................................................................... 26
6.6 Countersink of Drilled & Reamed Holes Flat Surface................................................... 26
6.7 Curved Surface............................................................................................................. 26
6.8 Finish ............................................................................................................................ 26
7 TAPERS - BLUEING ........................................................................................................... 26
8 VENDOR SUPPLIED COMMERCIAL PARTS.................................................................... 27
8.1 Pipe .............................................................................................................................. 27
8.2 Pipe Fittings.................................................................................................................. 28
8.3 Lockwashers................................................................................................................. 29

Author: MD Garred, 6/22/61 Approval: EC Przypsnzy 41A213280

Issued: GETS Drafting BUS. AREA: RLE DIST: 3012, 890 Sheet 1 of 1
This Drawing is the Property of GENERAL ELECTRIC COMPANY, TRANSPORTATION SYSTEMS DIVISION. This drawing is loaned upon
the express condition that it shall not be reproduced in any manner, and shall be returned upon demand. It is submitted for evaluation
purposes and it, and the information contained therein, shall not be otherwise used nor disclosed to third parties without written
permission of General Electric Co. (Made on Word)
 GE Transportation Systems

Applied Practices

4/4/12 First Made For: Various Diesel Engines Rev. F

8.4 Plain Washers .............................................................................................................. 29

8.5 Hexagon Bolts .............................................................................................................. 29
8.6 Studs ............................................................................................................................ 29
8.7 Track Bolts.................................................................................................................... 29
8.8 Nuts .............................................................................................................................. 29
8.9 Molded or Extruded Rubber ......................................................................................... 30
9 TOLERANCES .................................................................................................................... 30
9.1 Tolerances - Machined Surface to Unfinished Surface ................................................ 30
9.2 Layout for Machining - Sand Castings.......................................................................... 30
10 WELDING ........................................................................................................................ 31
10.1 General ..................................................................................................................... 31
10.2 Pipe........................................................................................................................... 31
10.3 Tolerances ................................................................................................................ 31
10.4 Cut Edges (Sawed, Burned, Edges (includes Angles of Cut) ................................... 32
10.5 Linear Tolerances Cut Edges (includes Angle of Cut) .............................................. 32
11 DEBURRING ................................................................................................................... 32
12 KNURLING ...................................................................................................................... 33
13 CLEANING, CORROSION PREVENTION & STORAGE................................................ 34
13.1 General ..................................................................................................................... 34
13.2 Cleaning.................................................................................................................... 34
13.3 Corrosion Prevention ................................................................................................ 34
13.4 Storage ..................................................................................................................... 36
13.5 Vendors..................................................................................................................... 36
14 PART NUMBERS, CATALOG NUMBERS, SERIAL NUMBERS ................................... 36
14.1 Application and Inspection ........................................................................................ 37
14.2 Serial Numbers ......................................................................................................... 37
15 FITS ................................................................................................................................. 40
16 INSPECTION ................................................................................................................... 40
16.1 General ..................................................................................................................... 40
16.2 Incoming Material...................................................................................................... 40
16.3 Magnetic Particle Inspection ..................................................................................... 40
16.4 Local Manufacture .................................................................................................... 41
16.5 Drawing Changes ..................................................................................................... 41
17 DOWELS ......................................................................................................................... 41
17.1 Standard Straight Dowels ......................................................................................... 41
17.2 Dowels from Mill Supplied Stock............................................................................... 41
17.3 Finish ........................................................................................................................ 41
17.4 Taper Pins................................................................................................................. 41
18 KEY WAY ........................................................................................................................ 42
19 CLASSIFICATION OF DIMENSIONS FOR QUALITY CONTROL ................................. 43
20 VENDOR PROCESS CONTROL..................................................................................... 44

Author: MD Garred, 6/22/61 Approval: EC Przypsnzy 41A213280

Issued: GETS Drafting BUS. AREA: RLE DIST: 3012, 890 Sheet 2 of 2
This Drawing is the Property of GENERAL ELECTRIC COMPANY, TRANSPORTATION SYSTEMS DIVISION. This drawing is loaned upon
the express condition that it shall not be reproduced in any manner, and shall be returned upon demand. It is submitted for evaluation
purposes and it, and the information contained therein, shall not be otherwise used nor disclosed to third parties without written
permission of General Electric Co. (Made on Word)
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Applied Practices

4/4/12 First Made For: Various Diesel Engines Rev. F

21 VENDOR WARRANTY .................................................................................................... 44

22 DRAWING DEFINITIONS ................................................................................................ 45

Author: MD Garred, 6/22/61 Approval: EC Przypsnzy 41A213280

Issued: GETS Drafting BUS. AREA: RLE DIST: 3012, 890 Sheet 3 of 3
This Drawing is the Property of GENERAL ELECTRIC COMPANY, TRANSPORTATION SYSTEMS DIVISION. This drawing is loaned upon
the express condition that it shall not be reproduced in any manner, and shall be returned upon demand. It is submitted for evaluation
purposes and it, and the information contained therein, shall not be otherwise used nor disclosed to third parties without written
permission of General Electric Co. (Made on Word)
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Applied Practices

4/4/12 First Made For: Various Diesel Engines Rev. F

1 DEFINITIONS

1.1 Dimensions

1.1.1 TOLERANCE is the amount a dimension may vary greater or smaller than the
specified dimension.

The tolerance is plus zero and The tolerance is plus .002 inches
minus .004 inches and minus .002 inches

LIMITING DIMENSION is the extreme dimension.

The max. and min. limiting dimensions are 2.135, 2.131 respectively. In the above
three examples the limiting dimensions are the same; each example means the
same dimension.

1.2 Tolerances on Machined Dimensions

This statement, as it appears above the drawing tolerance block, refers to all
machined or furnished surfaces that have a 250 microinch or better requirement.
Molded rubber or plastic products and component gaskets are included. Dimensions
known as radii are to be considered as any linear machined dimension.

MACHINE SURFACE is a surface which is not as cast, forged or rolled.

Author: MD Garred, 6/22/61 Approval: EC Przypsnzy 41A213280

Issued: GETS Drafting BUS. AREA: RLE DIST: 3012, 890 Sheet 4 of 4
This Drawing is the Property of GENERAL ELECTRIC COMPANY, TRANSPORTATION SYSTEMS DIVISION. This drawing is loaned upon
the express condition that it shall not be reproduced in any manner, and shall be returned upon demand. It is submitted for evaluation
purposes and it, and the information contained therein, shall not be otherwise used nor disclosed to third parties without written
permission of General Electric Co. (Made on Word)
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4/4/12 First Made For: Various Diesel Engines Rev. F

FINISHED SURFACE is any surface which is machined. In the case of cold or hot
rolled stock, a surface which is machined to a surface roughness of 250 microinches
or better is considered to be a finished surface.

FINISH ALL OVER & SMOOTH TURN will normally not be used on drawings.
Where such a note is used without a finish symbol, the finish will be 125 microinches
or better.

SURFACE ROUGHNESS OR FINISH is the nominal average deviation from the

mean in microinches, i.e., millionths of an inch. Further definition may be obtained
from GE Drawing M-3895111, or American Standards Association B46.1-1955.
RMS (Root Mean Square) readings of 11% higher than the arithmetic average will be
accepted.

VENDOR is any manufacturing area outside the immediate engine assembly and
manufacturing area. This means all areas outside the building in which the engine
assembly is conducted, and can include areas in the same building which are not
under the direct supervision of the Manager of Engine Manufacturing at his
discretion.

OUTSIDE VENDOR is any manufacturing area outside the General Electric, Erie
Plant. The purpose of distinguishing between vendors on this drawing is so that
there will be no doubt in what is meant in the section of these Applied Practices,
dealing with handling, corrosion prevention, and cleaning of parts. All vendors will
meet to take more caution that the Engine Manufacturing Unit in the handling of
parts. In a like manner, outside vendors will need to take more care that local
manufacturing depending on the amount of handling.

CLEAN O.D. FOR DRESSER COUPLING. The defined surface area is to be free
from foreign deposits other than the regular preservation coatings used on pipe to
prevent corrosion. The surface is to be free from indentations, projections, or roll
marks such as may be caused by pipe wrenches, vise jaws, or other mechanical
devices or careless handling. Typically, the pipe surface is satisfactory, for Dress
coupling or fitting applications, as it is normally received from the mill.

Indentations from the leak test equipment cup point set screws are permitted but
sharp projections that may have been caused by the set screws must be removed.
Sharp notches resulting form weld seams that prevent the coupling gasket from
sealing properly must be removed. 3

Author: MD Garred, 6/22/61 Approval: EC Przypsnzy 41A213280

Issued: GETS Drafting BUS. AREA: RLE DIST: 3012, 890 Sheet 5 of 5
This Drawing is the Property of GENERAL ELECTRIC COMPANY, TRANSPORTATION SYSTEMS DIVISION. This drawing is loaned upon
the express condition that it shall not be reproduced in any manner, and shall be returned upon demand. It is submitted for evaluation
purposes and it, and the information contained therein, shall not be otherwise used nor disclosed to third parties without written
permission of General Electric Co. (Made on Word)
 GE Transportation Systems

Applied Practices

4/4/12 First Made For: Various Diesel Engines Rev. F

ASA American Standards Association, Inc.

10 East 40th Street
New York, NY

The dates used with the AWA standards are for the latest revisions available at the
time this drawing was initially issued. It is expected that the latest revisions to these
standards will be used for the purchase of new or replacement tooling. This drawing
will not necessarily be revised each time one of the many ASA standards is revised.

2 GENERAL

2.1 Order of Authority

The dimensions, notes, or other information contained in the body of the detail or
assembly drawing take priority overall other instructions. Information in the drawing
general information block applies where that information is not specified in the body
of the drawing. Applied Practices are the lowest in order of authority.

Engine Engineering instructions which add to or clarify the instructions for the
drawing are secondary to the drawing.

Exceptions to this instruction are an Alteration Notice which changed some

instructions on the drawing and the new drawing was not available; a drawing that
has been marked up and been signed by Engine Engineering for an experimental
part or assembly, or other Engine Engineering document.

2.2 Changes to the Applied Practices

Changes to the Applied Practices will be made only by the responsible Product
Engineering authority.

2.3 Tolerances

The general tolerances to be used for engine parts are ±1/64” for linear dimensions,
where the surface finish is 250 microinches or better, when surface finish is rougher
than 250 microinches then ±1/32 inch tolerance will apply; for angular measurement
±1/2° will apply. The foregoing tolerances apply except where otherwise modified on
the drawing, engineering instructions, or in other areas of the Applied Practices.

The tolerances of intermediate dimensions are not to accumulate on any one piece
of material so as to make the overall dimension outside of the tolerance. There are
certain assemblies which will require machining after assembly to enable the ±1/64”

Author: MD Garred, 6/22/61 Approval: EC Przypsnzy 41A213280

Issued: GETS Drafting BUS. AREA: RLE DIST: 3012, 890 Sheet 6 of 6
This Drawing is the Property of GENERAL ELECTRIC COMPANY, TRANSPORTATION SYSTEMS DIVISION. This drawing is loaned upon
the express condition that it shall not be reproduced in any manner, and shall be returned upon demand. It is submitted for evaluation
purposes and it, and the information contained therein, shall not be otherwise used nor disclosed to third parties without written
permission of General Electric Co. (Made on Word)
 GE Transportation Systems

Applied Practices

4/4/12 First Made For: Various Diesel Engines Rev. F

tolerance to be held on the overall assembly. One such assembly would be the
aftercooler.

3 HOLES

DRILLED AND REAMED HOLE FINISH is expected to be 1000 and 125 microinches
respectively.

The maximum diameter of the circumscribed circle is equal to the basic hole
diameter “A” plus the positive tolerance. The minimum diameter of the inscribed
circle is equal to the basic diameter “A” minus the negative tolerance.

BASIC DIAMETER OF HOLE “A” VARIATIONS FROM BASIC SIZE “X”

OVER & INCL. DRILLED REAMED
+.002 +.0008
-- .040 -.001 -.001
+.003 +.0008
.040 .070 -.001 -.001
+.004 +.0008
.070 .128 -.001 -.001
+.005 +.0008
.128 .228 -.002 -.001
+.006 +.0008
.228 1/2 -.002 -.001
+.008 +.001
1/2 3/4 -.002 -.0015
+.010 +.001
3/4 1 -.003 -.0015
+.015 +.0015
1 3 -.003 -.002
+.020 +.0015
3 Over -.005 -.002

Author: MD Garred, 6/22/61 Approval: EC Przypsnzy 41A213280

Issued: GETS Drafting BUS. AREA: RLE DIST: 3012, 890 Sheet 7 of 7
This Drawing is the Property of GENERAL ELECTRIC COMPANY, TRANSPORTATION SYSTEMS DIVISION. This drawing is loaned upon
the express condition that it shall not be reproduced in any manner, and shall be returned upon demand. It is submitted for evaluation
purposes and it, and the information contained therein, shall not be otherwise used nor disclosed to third parties without written
permission of General Electric Co. (Made on Word)
 GE Transportation Systems

Applied Practices

4/4/12 First Made For: Various Diesel Engines Rev. F

3.1 Diameter Holes

Holes defined as such (example: ½ dia. hole x 2 deep) are to be made within the
drilling tolerances. The depth dimension is to be considered as any machined
dimension but with a ±1/32 tolerance.

3.2 Runout Tolerance

Runout tolerances are shown for drilled and reamed holes on the following page.
The dimension “B” is the drill depth of the drawing callout or the drill depth from
Section 5, this drawing. “C” is the runout tolerance in inches per inch of “B”. These
runout tolerances have no bearing on the location of the centerline of the hole. The
tolerance for the centerline is to be obtained from the paragraph LINEAR
DIMENSIONING OF HOLES.

The reamer will give the same runout of the original drilled hole, when a reamed hole
is required, the rough hole before reaming will therefore have a runout which will
allow the reamed hole to be in tolerance.

The center of the hole diameter must be within the locating dimension tolerance at
both ends of the hole in the case of thru holes.

When the drawing callout indicates a reamed hole, such as “.497-500 dia., ½ deep,”
the dimension for the depth shall be considered a machined dimension and the
tolerances as specified on the drawing shall apply. The required lead drill shall
conform to the sketch below.

Author: MD Garred, 6/22/61 Approval: EC Przypsnzy 41A213280

Issued: GETS Drafting BUS. AREA: RLE DIST: 3012, 890 Sheet 8 of 8
This Drawing is the Property of GENERAL ELECTRIC COMPANY, TRANSPORTATION SYSTEMS DIVISION. This drawing is loaned upon
the express condition that it shall not be reproduced in any manner, and shall be returned upon demand. It is submitted for evaluation
purposes and it, and the information contained therein, shall not be otherwise used nor disclosed to third parties without written
permission of General Electric Co. (Made on Word)
 GE Transportation Systems

Applied Practices

4/4/12 First Made For: Various Diesel Engines Rev. F

Author: MD Garred, 6/22/61 Approval: EC Przypsnzy 41A213280

Issued: GETS Drafting BUS. AREA: RLE DIST: 3012, 890 Sheet 9 of 9
This Drawing is the Property of GENERAL ELECTRIC COMPANY, TRANSPORTATION SYSTEMS DIVISION. This drawing is loaned upon
the express condition that it shall not be reproduced in any manner, and shall be returned upon demand. It is submitted for evaluation
purposes and it, and the information contained therein, shall not be otherwise used nor disclosed to third parties without written
permission of General Electric Co. (Made on Word)
 GE Transportation Systems

Applied Practices

4/4/12 First Made For: Various Diesel Engines Rev. F

3.3 Line Bored and Line Reamed Holes

Runout of line bored and line reamed holes will not exceed .0005” per axial inch of
the overall dimension of the holes. The step or misalignment of the centerlines of
adjacent hole not to exceed .0001” per inch of space between holes.

3.4 Linear Dimensioning of Holes

“D” is any linear dimension from a hole centerline.

The upper method of dimensioning will be used where the tolerance stackup is not
important. When “A” diameter is less than 1”, the tolerance on the “D” dimension will
be ± .007”. When “A” diameter is 1” or larger, the tolerance will be ± 1/64”.

When the lower method of dimensioning is used, tolerance stackup is not allowed.
The centerline of the resulting hole will be located within circle “E” whose diameter is
1/64”.

Author: MD Garred, 6/22/61 Approval: EC Przypsnzy 41A213280

Issued: GETS Drafting BUS. AREA: RLE DIST: 3012, 890 Sheet 10 of 10
This Drawing is the Property of GENERAL ELECTRIC COMPANY, TRANSPORTATION SYSTEMS DIVISION. This drawing is loaned upon
the express condition that it shall not be reproduced in any manner, and shall be returned upon demand. It is submitted for evaluation
purposes and it, and the information contained therein, shall not be otherwise used nor disclosed to third parties without written
permission of General Electric Co. (Made on Word)
 GE Transportation Systems

Applied Practices

4/4/12 First Made For: Various Diesel Engines Rev. F

4 ANGLES

Holes or Slots Spaced on a Circle or Circumference

On holes or slots equally spaced on a circle or circumference, the angular tolerance

will be ±1/2° from any hole or slot to any other hole or slot. When holes or slots are
not equally spaced, but are dimensioned with an angular dimension, the tolerance on
the angular dimension will be ±1/2°.

SQUARENESS OF A FACE TO AN AXIS

Author: MD Garred, 6/22/61 Approval: EC Przypsnzy 41A213280

Issued: GETS Drafting BUS. AREA: RLE DIST: 3012, 890 Sheet 11 of 11
This Drawing is the Property of GENERAL ELECTRIC COMPANY, TRANSPORTATION SYSTEMS DIVISION. This drawing is loaned upon
the express condition that it shall not be reproduced in any manner, and shall be returned upon demand. It is submitted for evaluation
purposes and it, and the information contained therein, shall not be otherwise used nor disclosed to third parties without written
permission of General Electric Co. (Made on Word)
 GE Transportation Systems

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4/4/12 First Made For: Various Diesel Engines Rev. F

On bored or turned work, a face is to be square to an axis so that the total indicator
runout will not exceed .001” per inch of diameter.

Squareness Notes

When a Total Indicator Runout is specified, it shall apply to the outer extremity of the
surface.

4.1 Sheet Metal and Plate

Sheet metal and plate right angle bends will be 90°±2°. Tolerances of angles other
than 90° bends will normally be specified on the drawing, otherwise use ±2°. The
bend radius will normally be specified. When the bend radius is not specified, it will
be not less than one times the metal thickness. Parts are to be formed with the
bends perpendicular to the direction of the grain.

4.2 Joggles

When the offset is for the purpose of making a smooth lay joint in sheet metal, the
tolerances which apply are shown below.

When dimension “T” is equal to or greater than dimension “X”, the maximum that
dimension “Y” may be is 2½ times “T”. When dimension “X” is greater than
dimension “T”, but less than 5 times “T”, the dimension “Y” may be a maximum of 4
times “T”.

Author: MD Garred, 6/22/61 Approval: EC Przypsnzy 41A213280

Issued: GETS Drafting BUS. AREA: RLE DIST: 3012, 890 Sheet 12 of 12
This Drawing is the Property of GENERAL ELECTRIC COMPANY, TRANSPORTATION SYSTEMS DIVISION. This drawing is loaned upon
the express condition that it shall not be reproduced in any manner, and shall be returned upon demand. It is submitted for evaluation
purposes and it, and the information contained therein, shall not be otherwise used nor disclosed to third parties without written
permission of General Electric Co. (Made on Word)
 GE Transportation Systems

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4/4/12 First Made For: Various Diesel Engines Rev. F

When “X” is equal to or greater than 5 times “T”,

4.3 Straightness, Flatness

Straightness of machined bars, rods, shafts, and tubes:

For any A, Y = .001” per in. of B, total .005” overall.

4.4 Pipes & Tubing Bend Angles

When pipe and tubing is bent, the unspecified tolerance for the bend angle will be
± 2°.

5 THREADS

5.1 General

This instruction is to apply to the threads used on diesel engines when standard
threads are desired or to simplify drafting, so that repetition of standardized
dimensions will not be required. The standard to be applied to screw threads is ASA
B1.1-1960 UNIFIED SCREWS THREADS. The standard to be applied to pipe

Author: MD Garred, 6/22/61 Approval: EC Przypsnzy 41A213280

Issued: GETS Drafting BUS. AREA: RLE DIST: 3012, 890 Sheet 13 of 13
This Drawing is the Property of GENERAL ELECTRIC COMPANY, TRANSPORTATION SYSTEMS DIVISION. This drawing is loaned upon
the express condition that it shall not be reproduced in any manner, and shall be returned upon demand. It is submitted for evaluation
purposes and it, and the information contained therein, shall not be otherwise used nor disclosed to third parties without written
permission of General Electric Co. (Made on Word)
 GE Transportation Systems

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4/4/12 First Made For: Various Diesel Engines Rev. F

threads is ASA B2.1-1960 and ASA B2.2-1060 PIPE THREADS, DRYSEAL PIPE
THREADS, respectively.

5.2 Screw Threads

5.2.1 Class of Threads

The class of threads for standard threads is to be 2A external, and 2B internal.
Threaded parts may be supplied at the vendors option with class 3A and 3B threads,
provided there is no increase in price over the 2A and 2B class threads. When
coatings or platings are required, they will not be thicker than the allowance on 2A
and 2B class threads, therefore, the resulting dimensions of plated or coated bolts
will not be altered to the extent that the fit between internal and external threads is
closer than that obtained with 3A and 3B class threads.

5.2.2 Thread Form

The standard thread form for use on diesel engine screw threads is the Unified
Screw Thread as specified in ASA B1.1-1960.

5.2.3 Thread Series

The standard thread series for diesel engines is to be UNC (UNIFIED COARSE).
When other thread series than UNC are specified such as UNF, UNEF, UNS, and
constant pitch UN series, the tolerances of ASA B1.1960 will apply.

5.2.4 Thread Entrance Chamfers and Countersinks

Thread entrance chamfers and countersinks to be made in accordance with ASA
B18.2-1960 for commercial fasteners.

5.3 Tapped Holes

5.3.1 Tapped Holes Thru

When no depth of hole or depth of tap is given such as: TAP 5/8-11, the tap drill and
the tap are to go thru so that there are full threads the whole depth of the hole.

5.3.2 Depth of Tap

When the depth of tap is given, but no tap hole depth is given such as 5/8-11 thd.
1 ¼ deep, the hole is to be a blind tapped hole to drawing K-5903487. The “T”
dimension of K-5903487 is to be the depth of full threads referred to on the drawing
callout, and is a minimum dimension. The maximum dimension “L” (depth of tap
hole) is to be the sum of “T” plus “A” of K-5903487. The “A” dimension will allow for

Author: MD Garred, 6/22/61 Approval: EC Przypsnzy 41A213280

Issued: GETS Drafting BUS. AREA: RLE DIST: 3012, 890 Sheet 14 of 14
This Drawing is the Property of GENERAL ELECTRIC COMPANY, TRANSPORTATION SYSTEMS DIVISION. This drawing is loaned upon
the express condition that it shall not be reproduced in any manner, and shall be returned upon demand. It is submitted for evaluation
purposes and it, and the information contained therein, shall not be otherwise used nor disclosed to third parties without written
permission of General Electric Co. (Made on Word)
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4/4/12 First Made For: Various Diesel Engines Rev. F

3 to 4 incomplete threads at the bottom of the hole, exclusive of the cone from the
drill point.

When the depth of tap and depth of tap hole are given, the depth of tap on the
drawing is a minimum dimension for full threads and the depth of tap hole on the
drawing is a maximum dimension, exclusive of the cone from the drill point.

5.3.3 Tap Holes and Limits

Standard tap drills for screw threads are listed on drawing K-4015003. The limits for
tap holes are listed in ASA B1.1-1960, Table 38. For applications other than those
covered by Table 38, formulas are given in Appendix E for the commonly used series
of threads.

5.4 Pipe Threads

5.4.1 General
Unless otherwise specified, pipe threads will be Dryseal American (National)
Standard Taper Pipe Thread (NPTF) up to and including 2” size. Over 2” size, the
pipe thread is to be American (National) Standard Taper Pipe Thread (NTP). The
ASA publications which cover the specifications for these pipe threads are
respectively B2.2-1960, B2.1-1960. The specifications for these threads are
completely covered by these publications.

Unless otherwise specified on the drawing, holes for Dryseal pipe threads (NPTF)
will be taper reamed after drilling and before tapping.

5.4.2 Chamfers and Countersinks

See Section 6.

5.5 Thread Inserts (Heli-Coil)

5.5.1 General
This section contains information for the installation of Heli-Coil inserts (both regular
and screw lock) for fasteners with UNC, UNF, NF, Class 3B and Class 2B threads.
Between the information supplied on the drawing callout and the table in this
drawing, sufficient information should be available to install Heli-Coil inserts properly.
The callout should list the tap drill size, depth of hole, part number, and length of
insert. The sketches give the general configuration of through and blind holes.

Author: MD Garred, 6/22/61 Approval: EC Przypsnzy 41A213280

Issued: GETS Drafting BUS. AREA: RLE DIST: 3012, 890 Sheet 15 of 15
This Drawing is the Property of GENERAL ELECTRIC COMPANY, TRANSPORTATION SYSTEMS DIVISION. This drawing is loaned upon
the express condition that it shall not be reproduced in any manner, and shall be returned upon demand. It is submitted for evaluation
purposes and it, and the information contained therein, shall not be otherwise used nor disclosed to third parties without written
permission of General Electric Co. (Made on Word)
 GE Transportation Systems

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4/4/12 First Made For: Various Diesel Engines Rev. F

5.5.2 Tables
The tables list Heli-Coil part numbers of the tools required to install the inserts by
hand, and inspection data for checking unified course.

The tables list Heli-Coil part numbers of tools required to install the inserts by hand,
and inspection data for checking unified file.

5.5.3 Roughing Tap

The roughing tap is listed for the convenience of manufacturing and may be an aid in
production of the larger sizes. Its use is optional. The manufacturing planner will
decide whether or not to use the roughing tap.

Author: MD Garred, 6/22/61 Approval: EC Przypsnzy 41A213280

Issued: GETS Drafting BUS. AREA: RLE DIST: 3012, 890 Sheet 16 of 16
This Drawing is the Property of GENERAL ELECTRIC COMPANY, TRANSPORTATION SYSTEMS DIVISION. This drawing is loaned upon
the express condition that it shall not be reproduced in any manner, and shall be returned upon demand. It is submitted for evaluation
purposes and it, and the information contained therein, shall not be otherwise used nor disclosed to third parties without written
permission of General Electric Co. (Made on Word)
 GE Transportation Systems

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4/4/12 First Made For: Various Diesel Engines Rev. F

Thread Inserts (Heli-Coil)

HELI-COIL INSPECTION DATA

TAPPED HOLE ASSEMBLED INSERT
HELI-COIL
NOMINAL MAJOR MINOR DIA. FIN TAP
THREAD DIA. PITCH DIA. AFT TAPPING MAJOR MAJOR PITCH DIA. MINOR DIA.
SIZE MIN MIN MAX MIN MAX DIA MAX DIA MIN MIN MAX MIN MAX
4-40 .1404 .1283 .1308 .116 .121 .1455 .112 .0958 .0991 .0849 .0939
5-40 .1534 .1413 .1438 .128 .133 .1585 .125 .1088 .1121 .0979 .1062
6-32 .1733 .1583 .1611 .144 .150 .1800 .138 .1177 .1214 .1042 .1144
8-32 .1993 .1843 .1872 .170 .176 .2060 .164 .1437 .1475 .1302 .1389
10-24 .2370 .2170 .2203 .199 .205 .2450 .190 .1629 .1672 .1449 .1555
12-24 .2630 .2430 .2464 .221 .227 .2710 .216 .1889 .1933 .1709 .1801
1/4-20 .3062 .2825 .2863 .261 .26 .3160 .250 .2175 .223 .1959 .2067
5/16-18 .3751 .3486 .3529 .328 .334 .3850 .3125 .2764 .2817 .2524 .2630
3/8-16 .4454 .4156 .4203 .390 .398 .4570 .375 .3344 .3401 .3073 .3182
1/2-13 .5865 .5499 .5554 .515 .525 .6000 .500 .4500 .4565 .4167 .4312
5/8-11 .7272 6841 .6903 .653 .663 .7410 .625 .5660 .5732 .5266 .5422
3/4-10 .8623 .8149 .8216 .781 .791 .8770 .750 .6850 .6927 .6417 .6578
7/8-9 .9996 .9471 .9543 .906 .916 1.0160 .875 .8028 .8110 .7547 .7716
1-8 1.1402 1.0812 1.0890 1.031 1.044 1.1590 1.000 .9188 .9276 .8647 .8824
1 1/8-7 1.2850 1.2178 1.262 1.171 1.186 1.3060 1.125 1.0322 1.0416 .9704 .9888
1 1/4-7 1.4100 1.3428 1.3514 1.296 1.311 1.4310 1.250 1.1572 1.1668 1.0954 1.1140
1 3/8-6 1.5620 1.4832 1.4926 1.421 1.436 1.5860 1.375 1.2667 1.2771 1.1946 1.2153
1 1/2-6 1.6870 1.6082 1.6177 1.546 1.571 1.7110 1.500 1.3917 1.4022 1.3196 1.3404

OBSOLETE - DO NOT USE

Author: MD Garred, 6/22/61 Approval: EC Przypsnzy 41A213280

Issued: GETS Drafting BUS. AREA: RLE DIST: 3012, 890 Sheet 17 of 17
This Drawing is the Property of GENERAL ELECTRIC COMPANY, TRANSPORTATION SYSTEMS DIVISION. This drawing is loaned upon
the express condition that it shall not be reproduced in any manner, and shall be returned upon demand. It is submitted for evaluation
purposes and it, and the information contained therein, shall not be otherwise used nor disclosed to third parties without written
permission of General Electric Co. (Made on Word)
 GE Transportation Systems

Applied Practices

4/4/12 First Made For: Various Diesel Engines Rev. F

HELI-COIL INSERT DATA FOR MANUFACTURING

HELI-COIL PART NUMBERS
INSERT THRU HOLES
TOOL ONLY TANG GAGES THREAD PLUG FOR
NOMINAL ROUGH FINISH TAPS PREWINDER BREAK-OFF TAPPED HOLE CSK
SIZE TAP PLUG BOTTOM TYPE TOOLS INSP. WORKING DIA. M
4-40 Not Used 04CPB 04CBB 528-04N 1194-04 1440-04 1442-04 .17
5-40 Not Used 05CPB 05CBB 528-04N 1194-06 1440-05 1442-05 .18
6-32 Not Used 06CPB 06CBB 528-04N 1194-06 1440-06 1442-06 .20
8-32 Not Used 2CPB 2CBB 528-04N 1194-2 1440-2 1442-2 .23
10-24 Not Used 3CPB 3CBB 528-04N 1194-3 1440-3 1442-3 .26
12-24 Not Used 1CPB 1CBB 528-04N 1194-1 1440-1 1442-1 .29
1/4-20 Not Used 4CPB 4CBB 528-04N 1194-4 1440-4 1442-4 .34
5/16-18 Not Used 5CPB 5CBB 528-04N 1194-5 1440-5 1442-5 .40
3/8-16 Not Used 6CPB 6CBB 528-04N 1194-6 1440-6 1442-6 .48
1/2-13 8CRU 8CPB 8CBB 528-04N 1194-8 1440-7 1442-8 .62
5/8-11 10CRU 8187-10 10187-10 3724-24 1194-10 1440-10 Not Used .76
3/4-10 12CRU 8187-12 10187-12 3724-24 1194-12 1440-12 Not Used .90
7/8-9 14CRU 8187-14 10187-14 3724-24 1194-14 1440-14 Not Used 1.04
1-8 16CRU 8187-16 10187-16 3724-24 1194-16 1440-16 Not Used 1.18
1 1/8-7 18CRU 8187-18 10187-18 3724-24 Not Used 1440-18 Not Used 1.33
1 1/4-7 20CRU 8187-20 10187-20 3724-24 Not Used 1440-20 Not Used 1.45
1 3/8-6 22CRU 8187-22 10187-22 3724-24 Not Used 1440-22 Not Used 1.61
1 1/2-6 24CRU 8187-24 10187-24 3724-24 Not Used 1440-24 Not Used 1.73

OBSOLETE - DO NOT USE

5.5.4 Finish Tap

Part numbers of the plug and bottoming taps are listed. The plug tap will be used
unless the drawing call out specifies bottom tap. Note that one kind of finishing tap
is used for aluminum and another kind for steel, iron or plastic.

5.5.5 Heli-Coil Inserting Tools

The insert tool part numbers listed are for the prewinder type. This type tool is for
hand installation.

5.5.6 Tang Break-off Tools

The tank break-off tools listed are for manual removal of the tag on through holes.
There is no tool for removing the tank on blind holes. On blind holes, ½” dia. and
over, the tang will be removed using a drift and long nose pliers. The tang will not be
removed on blind holes under ½ in. dia. The tang will be removed on all through
holes.

Author: MD Garred, 6/22/61 Approval: EC Przypsnzy 41A213280

Issued: GETS Drafting BUS. AREA: RLE DIST: 3012, 890 Sheet 18 of 18
This Drawing is the Property of GENERAL ELECTRIC COMPANY, TRANSPORTATION SYSTEMS DIVISION. This drawing is loaned upon
the express condition that it shall not be reproduced in any manner, and shall be returned upon demand. It is submitted for evaluation
purposes and it, and the information contained therein, shall not be otherwise used nor disclosed to third parties without written
permission of General Electric Co. (Made on Word)
 GE Transportation Systems

Applied Practices

4/4/12 First Made For: Various Diesel Engines Rev. F

5.5.7 Gages
Part number of gages for inspection and working are supplied for sizes ½” and under.
Sizes over ½” use only inspection gages. The GO nibs of working gages are larger than
the GO nibs of inspection gages; therefore, when a working gage indicates a tapped
hole is under size, it should be checked with an inspection gage before reworking the
tapped hole. The larger GO nibs of the working gage allow for more wear than the in-
spection gage before scrapage of the gage is required. The NOT GO nibs of both in-
spection and working gages are the same dimension, as no wear of this portion of the
gage should take place for properly sized holes. The table on pages 20 and 21 list Heli-
Coil part numbers for master gages only. If longer wearing marking gages are needed,
consult the Heli-Coil catalog.

5.5.8 Marking of Gages and Taps

Taps and gages for use with Heli-Coil inserts are marked STI (Screw Thread Insert)
immediately following the nominal size. This distinguishes such taps and gages from
conventional taps and gages for standard threads of the same nominal size.

5.5.9 Countersink
Before tapping countersink the hole 120° to diameter M in the table.

5.5.10 Types of Inserts

The type of insert to be used will be specified by the drawing callout. The two general
types are Screw Thread Inserts and Screw Lock Inserts. The latter being a type of
locking device which is identified by a red dye.

Author: MD Garred, 6/22/61 Approval: EC Przypsnzy 41A213280

Issued: GETS Drafting BUS. AREA: RLE DIST: 3012, 890 Sheet 19 of 19
This Drawing is the Property of GENERAL ELECTRIC COMPANY, TRANSPORTATION SYSTEMS DIVISION. This drawing is loaned upon
the express condition that it shall not be reproduced in any manner, and shall be returned upon demand. It is submitted for evaluation
purposes and it, and the information contained therein, shall not be otherwise used nor disclosed to third parties without written
permission of General Electric Co. (Made on Word)
 GE Transportation Systems

Applied Practices

4/4/12 First Made For: Various Diesel Engines Rev. F

HELI-COIL INSPECTION DATA

TAPPED HOLE ASSEMBLED INSERT
NOMINAL MAJOR MINOR DIA. HELI-COIL FIN
THREAD DIA. PITCH DIA. AFT TAPPING TAP MAJOR MAJOR PITCH DIA. MINOR DIA.
SIZE MIN MIN MAX MIN MAX DIA MAX DIA MIN MIN MAX MIN MAX
6-40 .1664 .1543 .1569 .144 .149 .1715 .138 .1218 .1252 .1109 .1186
8-36 .1955 .1821 .1849 .170 .175 .2010 .164 .1460 .1496 .1339 .1416
10-32 .2253 .2103 .2133 .196 .202 .2320 .190 .1697 .1736 .1562 .1641
1/4-28 .2904 .2732 .2765 .257 .264 .2980 1/4 .2268 .2311 .2113 .2191
5/16-24 .3595 .3395 .3433 .323 .330 .3680 5/16 .2854 .2902 .2674 .2756
3/8-24 .429 .4020 .4059 .385 .392 .4300 3/8 .3479 .3528 .3299 .3382
7/16-20 .4937 .4700 .4744 .450 .458 .5030 7/16 .4050 .4104 .3834 .3929
1/2-20 .5562 .5325 .5371 .513 .522 .5660 1/2 .4675 .4731 .4459 .4556
9/16-18 .6251 .5986 .6035 .577 .586 .6350 9/16 .5264 .5323 .5024 .5124
5/8-18 .6876 .6611 .6661 .640 .649 .6980 5/8 .5889 .5949 .5649 .5750
3/4-16 .8204 .7906 .7961 .765 .775 .8320 3/4 .7094 .7159 .6823 .6931
7/8-14 .9554 .9214 .9274 .890 .900 .9680 7/8 .8286 .8356 .7977 .8091
1-14 1.0804 1.0464 1.0527 1.015 1.025 1.0930 1 .9536 .9609 .9227 .9344
1-12 1.0937 1.0542 1.0608 1.015 1.025 1.1070 1 .9459 .9535 .9098 .9220
1 1/8-12 1.2187 1.1792 1.1860 1.140 1.159 1.2320 1 1/8 1.0709 1.0787 1.0348 1.0472
1 1/4-12 1.3437 1.3042 1.3112 1.265 1.284 1.3570 1 1/4 1.1959 1.2039 1.1598 1.1724
1 3/8-12 1.4687 1.4292 1.4364 1.390 1.409 1.4820 1 3/8 1.3209 1.3291 1.2848 1.2976
1 1/2-12 1.5937 1.5542 1.5615 1.515 1.534 1.6070 1 1/2 1.4459 1.4542 1.4098 1.4227

OBSOLETE - DO NOT USE

HELI-COIL INSERT DATA FOR MANUFACTURING
HELI-COIL PART NUMBERS
INSERT THRU HOLES
TOOL ONLY TANG GAGES THREAD PLUG FOR
NOMINAL ROUGH FINISH TAPS PREWINDER BREAK-OFF TAPPED HOLE CSK
SIZE TAP PLUG BOTTOM TYPE TOOLS INSP. WORKING DIA. M
6-40 Not Used 06FPB 06FBB 535-06N 1194-06 1441-06 1443-06 .19
8-36 Not Used 2FPB 2FBB 535-2N 1194-2 1441-2 1443-2 .22
10-32 Not Used 3FPB 3FBB 535-3N 1196-3 1441-3 1443-3 .25
1/4-28 Not Used 4FPB 4FBB 535-4N 1196-4 1441-4 1443-4 .32
5/16-24 Not Used 5FPB 5FBB 535-5N 1196-5 1441-5 1443-5 .39
3/8-24 Not Used 6FPB 6FBB 535-6N 1196-6 1441-6 1443-6 .45
7/16-20 7FRU 7FPB 7FBB 535-7N 1196-7 1441-7 1443-7 .52
1/2-20 8FRU 8FPB 8FBB 535-8N 1196-8 1441-8 1443-8 .59
9/16-18 9FRU 193-9 4193-9 535-9N 1196-9 1441-9 Not Used .66
5/8-18 10FRU 193-10 4193-10 535-10N 1196-10 1441-10 Not Used .72
3/4-16 12FRU 193-12 4193-12 535-12N 1196-12 1441-12 Not Used .85
7/8-14 14FRU 193-14 4193-14 535-14N 1196-14 1441-14 Not Used .99
1-14 16FRU 193-16 4193-16 535-16N 1196-16 1441-16 Not Used 1.11
1-12 96FPB 96FBB 535-161N 1196-161 1441-161 Not Used 1.13
1 1/8-12 18FRU 193-18 4193-18 535-18N Not Used 1441-18 Not Used 1.25
1 1/4-12 20FRU 193-20 4193-20 535-20N Not Used 1441-20 Not Used 1.38
1 3/8-12 22FRU 193-22 4193-22 535-22N Not Used 1441-22 Not Used 1.50
1 1/2-12 24FRU 193-24 4193-24 535-24N Not Used 1441-24 Not Used 1.63

OBSOLETE - DO NOT USE

Author: MD Garred, 6/22/61 Approval: EC Przypsnzy 41A213280

Issued: GETS Drafting BUS. AREA: RLE DIST: 3012, 890 Sheet 20 of 20
This Drawing is the Property of GENERAL ELECTRIC COMPANY, TRANSPORTATION SYSTEMS DIVISION. This drawing is loaned upon
the express condition that it shall not be reproduced in any manner, and shall be returned upon demand. It is submitted for evaluation
purposes and it, and the information contained therein, shall not be otherwise used nor disclosed to third parties without written
permission of General Electric Co. (Made on Word)
 GE Transportation Systems

Applied Practices

4/4/12 First Made For: Various Diesel Engines Rev. F

HELI-COIL DRILLING AND INSPECTION DATA (UNC & NC)

TAP DRILL COUNTER-SINK DIAMETER
TAPPED THREAD PITCH DIA. * HELI-COIL GAGE
NOMINAL STEEL IRON (120° INCL. PART NO. FOR
THREAD ALUMINUM PLASTIC MAX. ANGLE) TAPPED HOLE
SIZE MIN MAX MIN MAX MIN 3B 2B MIN MAX 3B 2B
4-40 .116 .121 .119 .124 .1283 .1299 .1308 .14 .17 1688-04 1440-04
5-40 .128 .131 .131 .136 .1413 .1430 .1438 .14 .17 1688-05 1440-05
6-32 .144 .150 .148 .154 .1583 .1601 .1611 .17 .20 1688-06 1440-06
8-32 .170 .176 .174 .180 .1843 .1862 .1872 .20 .23 1688-2 1440-2
10-24 .199 .205 .203 .209 .2170 .2192 .2203 .24 .27 1688-3 1440-3
12-24 .221 .227 .225 .231 .2430 .2453 .2464 .26 .29 1688-1 1440-1
1/4-20 .261 .267 .265 .271 .2825 .2851 .2863 .30 .33 1688-4 1440-4
5/16-18 .328 .334 .331 .337 .3486 .3515 .3529 .37 .40 1688-5 1440-5
3/8-16 .390 .398 .398 .402 .4156 .4189 .4203 .44 .47 1688-6 1440-6
1/2-13 .515 .525 .525 .533 .5499 .5537 .5554 .59 .62 1688-8 1440-8
5/8-11 .653 .663 .663 .673 .6841 .6885 .6903 .73 .76 1688-10 1440-10
3/4-10 .781 .791 .789 .799 .8149 .8196 .8216 .86 .89 1688-12 1440-12
7/8-9 .906 .916 .913 .924 .9471 .9522 .9543 1.00 1.03 1688-14 1440-14
1-8 1.031 1.044 1.041 1.055 1.0812 1.0868 1.0890 1.14 1.17 1688-16 1440-16
1 1/8-7 1.171 1.186 1.184 1.199 1.2178 1.2239 1.2262 1.29 1.32 1688-18 1440-18
1 1/4-7 1.296 1.311 1.309 1.324 1.3428 1.3490 1.3514 1.42 1.45 1688-20 1440-20
1 3/8-6 1.421 1.436 1.434 1.449 1.4832 1.4900 1.4926 1.57 1.60 1688-22 1440-22
1 1/2-6 1.546 1.571 1.569 1.594 1.6082 1.6151 1.6177 1.70 1.73 1688-24 1440-24
* This tabulation refers to Master Gages. Consult Heli-Coil catalog for longer wearing working gages.

HELI-COIL TAP DATA FOR MANUFACTURING FOR UNC & NC

--- TAPS --- 1. Use 2B Taps for Regular Inserts
2. Use 3B Taps for Screw Lock Inserts
NOMINAL ALL MAT’L ALUMINUM FINISHING TAPS STEEL, IRON, PLASTIC FINISHING TAPS
THREAD ROUGHING PLUG BOTTOMING PLUG BOTTOMING
SIZE TAPS** 3B 2B 3B 2B 3B 2B 3B 2B
4-40 Not Used 04CPB 04CPA 04CBB 04CBA 23187-04 1187-04 27187-04 5187-04
5-40 Not Used 05CPB 05CPA 05CBB 05CBA 23187-05 1187-05 27187-05 5187-05
6-32 Not Used 06CPB 06CPA 06CBB 06CBA 23187-06 42187-06 27187-06 44187-06
8-32 Not Used 2CPB 2CPA 2CBB 2CBA 23187-2 42187-2 27187-2 44187-2
10-24 Not Used 3CPB 3CPA 3CBB 3CBA 1187-3 19187-3 5187-3 21187-3
12-24 Not Used 1CPB 1CPA 1CBB 1CBA 1187-1 19187-1 5187-1 21187-1
1/4-20 Not Used 4CPB 4CPA 4CBB 4CBA 1187-4 19187-4 5187-4 21187-4
5/16-18 Not Used 5CPB 5CPA 5CBB 5CBA 42187-5 19187-5 44187-5 21187-5
3/8-16 Not Used 6CPB 6CPA 6CBB 6CBA 42187-6 19187-6 44187-6 21187-6
1/2-13 8CRU 8CPB 8CPA 8CBB 8CBA 42187-8 19187-8 44187-8 21187-8
5/8-11 10CRU 8187-10 18187-10 10187-10 20187-10 9187-10 19187-10 11187-10 21187-10
3/4-10 12CRU 8187-12 18187-12 10187-12 20187-12 9187-12 19187-12 11187-12 21187-12
7/8-9 14CRU 8187-14 18187-14 10187-14 20187-14 9187-14 19187-14 11187-14 21187-14
1-8 16CRU 8187-16 18187-16 10187-16 20187-16 9187-16 19187-16 11187-16 21187-16
1 1/8-7 Not Used 8187-18 18187-18 10187-18 20187-18
1 1/4-7 Not Used 8187-20 18187-20 10187-20 20187-20
1 3/8-6 Not Used 8187-22 18187-22 10187-22 20187-22
1 1/2-6 Not Used 8187-24 18187-24 10187-24 20187-24

* Use of roughing tap is optional and is generally not required for aluminum, cost iron, or plastic.

Author: MD Garred, 6/22/61 Approval: EC Przypsnzy 41A213280

Issued: GETS Drafting BUS. AREA: RLE DIST: 3012, 890 Sheet 21 of 21
This Drawing is the Property of GENERAL ELECTRIC COMPANY, TRANSPORTATION SYSTEMS DIVISION. This drawing is loaned upon
the express condition that it shall not be reproduced in any manner, and shall be returned upon demand. It is submitted for evaluation
purposes and it, and the information contained therein, shall not be otherwise used nor disclosed to third parties without written
permission of General Electric Co. (Made on Word)
 GE Transportation Systems

Applied Practices

4/4/12 First Made For: Various Diesel Engines Rev. F

HAND TOOLS FOR INSERTING & REMOVING UNC & NC HELI-COILS

TANG BREAK-OFF TOOLS
NOMINAL HAND INSERTING REGULAR SCREW LOCK EXTRACTOR
THREAD SIZE TOOLS INSERTS INSERTS
4-40 7551-04 1194-04 3580-04 1227-06
5-40 7551-05 1194-05 3580-05 1227-06
6-32 7551-06 1194-06 3580-06 1227-06
8-32 7551-2 1194-2 3580-2 1227-06
10-24 7551-3 1195-3 3580-3 1227-6
12-24 7551-1 1195-1 3580-1 1227-6
1/4-20 7551-4 1195-4 3580-4 1227-6
5/16-18 3551-5 1195-5 3580-5 1227-6
3/8-16 3551-6 1195-6 3580-6 1227-6
1/2-13 3551-8 1195-8 3580-8 1227-16
5/8-11 3724-10 1195-10 1195-10 1227-16
3/4-10 3724-12 1183-12 1183-12 1227-16
7/8-9 3724-14 1183-14 1183-14 1227-16
1-8 3724-16 1183-16 1183-16 1227-16
1 1/8-7 3724-18 For sizes larger than 1” use needle 1227-24
1 1/4-7 3724-20 nose pliers. 1227-24
1 3/8-6 3724-22 1227-24
1 1/2-6 3724-24 1227-24

HELI-COIL INSPECTION DATA (UNF & NF)

TAP DRILL COUNTER-SINK DIAMETER M
TAPPED THREAD
PITCH DIA. * HELI-COIL GAGE
NOMINAL STEEL IRON (120° INCL. PART NO. FOR
THREAD ALUMINUM PLASTIC MAX. ANGLE) TAPPED HOLE
SIZE MIN MAX MIN MAX MIN 3B 2B MIN MAX 3B 2B
6-40 .144 .149 .148 .153 .1543 .1560 .1569 .16 .19 1694-06 1441-06
10-32 .196 .202 .200 .206 .2103 .2123 .2133 .22 .25 1694-3 1441-2
1/4-28 .257 .264 .261 .268 .2732 .2754 .2765 .29 .32 1694-4 1441-3
5/16-24 .323 .330 .327 .334 .3395 .3421 .3433 ..36 .39 1694-5 1441-4
3/8-24 .385 .392 .389 .396 .4020 .4047 .4059 .42 .45 1694-6 1441-5
7/16-20 .450 .458 .453 .461 .4700 .4731 .4744 .49 .52 1694-7 1441-6
1/2-20 .513 .522 .515 .524 .5325 .5357 .5371 .55 .58 1694-8 1441-8
9/16-18 .577 .586 .577 .586 .5986 .6020 .6035 .62 .65 1694-9 1441-9
5/8-18 .640 .649 .640 .649 .6611 .6646 .6661 .68 .71 1694-10 1441-10
3/4-16 .765 .775 .765 .775 .7906 .7945 .7961 .82 .85 1694-12 1441-12
7/8-14 .890 .900 .898 .908 .9214 .9257 .9274 .95 .98 1694-14 1441-14
1-14 1.015 1.025 1.023 1.033 1.0464 1.0511 1.0530 1.08 1.11 1694-16 1441-16
1-12 1.015 1.025 1.023 1.033 1.0542 1.0589 1.0608 1.09 1.12 1694-161 1441-161
1 1/8-12 1.140 1.159 1.140 1.159 1.1792 1.1841 1.1860 1.22 1.25 1694-18 1441-18
1 1/4-12 1.265 1.284 1.265 1.284 1.3042 1.3092 1.3112 1.34 1.37 1694-20 1441-20
1 3/8-12 1.390 1.409 1.390 1.409 1.4292 1.4343 1.4364 1.47 1.50 1694-22 1441-22
1 1/2-12 1.515 1.534 1.515 1.534 1.5542 1.5595 1.5615 1.59 1.62 1694-24 1441-24
* This tabulation refers to Master Gages. Consult Heli-Coil catalog for longer wearing working gages.

Author: MD Garred, 6/22/61 Approval: EC Przypsnzy 41A213280

Issued: GETS Drafting BUS. AREA: RLE DIST: 3012, 890 Sheet 22 of 22
This Drawing is the Property of GENERAL ELECTRIC COMPANY, TRANSPORTATION SYSTEMS DIVISION. This drawing is loaned upon
the express condition that it shall not be reproduced in any manner, and shall be returned upon demand. It is submitted for evaluation
purposes and it, and the information contained therein, shall not be otherwise used nor disclosed to third parties without written
permission of General Electric Co. (Made on Word)
 GE Transportation Systems

Applied Practices

4/4/12 First Made For: Various Diesel Engines Rev. F

HELI-COIL TAP DATA FOR MANUFACTURING FOR UNF & NF

--- TAPS ---
1. Use 2B Taps for Regular Inserts
2. Use 3B Taps for Screw Lock Inserts
NOMINAL ALL MAT’L ALUMINUM FINISHING TAPS STEEL, IRON, PLASTIC FINISHING TAPS
THREAD ROUGHING PLUG BOTTOMING PLUG BOTTOMING
SIZE TAPS** 3B 2B 3B 2B 3B 2B 3B 2B
6-40 Not Used 06FPB 06FPA 06FBB 06FBA 23193-04 1193-06 27193-06 5193-06
10-32 Not Used 3FPB 3FPA 3FBB 3FBA 23193-3 19193-3 27193-3 21193-3
1/4-28 Not Used 4FPB 4FPA 4FBB 4FBA 1193-4 19193-4 5193-4 21193-4
5/16-24 Not Used 5FPB 5FPA 5FBB 5FBA 1193-5 19193-5 5193-5 21193-5
3/8-24 Not Used 6FPB 6FPA 6FBB 6FBA 1193-6 19193-6 5193-6 21193-6
7/16-20 7FRU 7FPB 7FPA 7FBB 7FBA 42193-7 19193-7 44193-7 21193-7
1/2-20 8FRU 8FPB 8FPA 8FBB 8FBA 42193-8 19193-8 44193-8 21193-8
9/16-18 9FRU 38193-9 18193-9 43193-9 20193-9 42193-9 19193-9 44193-9 21193-9
5/8-18 10FRU 8193-10 18193-10 10193-10 20193-10 9193-10 19193-10 11193-10 21193-10
3/4-16 12FRU 8187-12 18193-12 10193-12 20193-12 9193-12 19193-12 11193-12 21193-12
7/8-14 14FRU 8187-14 18193-14 10193-14 20193-14 9193-14 19193-14 11193-14 21193-14
1-14 16FRU 8187-16 18193-16 10193-16 20193-16 9193-16 19193-16 11193-16 21193-16
1-12 161FRU 8187-161 18193-161 10193-161 20193-161 9193-161 19193-161 11193-161 21193-161
1 1/8-12 Not Used 8187-18 18193-18 10193-18 20193-18
1 1/4-12 Not Used 8187-20 18193-20 10193-20 20193-20
1 3/8-12 Not Used 8187-22 18193-22 10193-22 20193-22
1 1/2-12 Not Used 8187-24 18193-24 10193-24 20193-24

HAND TOOLS FOR INSERTING & REMOVING UNF & NF HELI-COILS

TANG BREAK-OFF TOOLS
NOMINAL REGULAR SCREW LOCK REGULAR SCREW LOCK
THREAD SIZE INSERTS INSERTS INSERTS INSERTS EXTRACTOR
6-40 7552-06 7552-06 1194-06 3581-06 1227-06
10-32 7552-3 7552-3 1196-3 3581-3 1227-6
1/4-28 7552-4 7552-4 1196-4 3581-4 1227-6
5/16-24 535-5 535-5 1196-5 3581-5 1227-6
3/8-24 535-6 535-6 1196-6 3581-6 1227-6
7/16-20 535-7 535-7 1196-7 3581-7 1227-16
1/2-20 535-8 535-8 1196-8 3581-8 1227-16
9/16-18 535-9 535-9 1196-9 3581-9 1227-16
3/8-18 535-10 535-10 1196-10 1196-10 1227-16
3/4-16 535-12 535-12 1196-12 1196-12 1227-16
7/8-14 535-14 535-14 1196-14 1196-14 1227-16
1-14 535-16 535-16 1196-16 1196-16 1227-16
1-12 535-161 535-161 1196-16 1196-16 1227-16
1 1/8-12 535-18 535-18 1227-16
1 1/4-12 535-20 535-20 1227-24
1 3/8-12 535-22 535-22 1227-24
1 1/2-12 535-24 535-24 1227-24

Author: MD Garred, 6/22/61 Approval: EC Przypsnzy 41A213280

Issued: GETS Drafting BUS. AREA: RLE DIST: 3012, 890 Sheet 23 of 23
This Drawing is the Property of GENERAL ELECTRIC COMPANY, TRANSPORTATION SYSTEMS DIVISION. This drawing is loaned upon
the express condition that it shall not be reproduced in any manner, and shall be returned upon demand. It is submitted for evaluation
purposes and it, and the information contained therein, shall not be otherwise used nor disclosed to third parties without written
permission of General Electric Co. (Made on Word)
 GE Transportation Systems

Applied Practices

4/4/12 First Made For: Various Diesel Engines Rev. F

6 CHAMFERS, FILLETS, RADII, COUNTERSINK, SPOT FACE, COUNTERBORE

6.1 Chamfers, Fillets, Radii, Countersink

ITEM DRAFTING AND MANUFACTURING PRACTICE

Drws. To specify chamfer required as YX° (e.g., 1/16 x 45°)
A Unless otherwise specified chamfer Up to 1/32 +.010 -.000
Chamfer tolerances to be ±5°. 1/32 up +1/32 -0
B Diameter Chamfer or Rad.
Break Corner Unless otherwise stated, shop will Up to 1” .005 to 1/64
or Burr remove all burrs by chamfer to radius. Over 1” to 2” .005 to 1/32
Over 2” .005 to 1/16
C
Sharp Corner Must be stated on drawing as “sharp corner” and have a maximum radius of .005.
Specify on drawings only when a chamfer is not acceptable. Unless otherwise
R specified radii of corners to be:
Radius Corner No radii specified -- see “B”
Fractional radii ±1/64
Decimal radii (specify on drg.)
Unless otherwise specified fillet tolerances to be:
F No radii specified -- min. radius to be 1/32 +1/32-0.
Fillet Fractional radii ±1/64
Decimal radii (specify on drg.)
Rad. must blend into adjoining surface with no step in transition from rad. To
adjoining surface.
H Where diameter “D” is to be ground to size and is adjacent to a shoulder, a
Undercut dimensioned groove is to be shown to provide cutting wheel clearance
K End projection on part-off cuts must be removed unless otherwise specified.
Part Off
Thread
Undercut Undercut diameter must be shown when thread is carried up to head.
Finish All surface transition points such as chamfers fillets, etc., shall conform to roughness
of the roughest adjacent surface unless otherwise indicated.

Author: MD Garred, 6/22/61 Approval: EC Przypsnzy 41A213280

Issued: GETS Drafting BUS. AREA: RLE DIST: 3012, 890 Sheet 24 of 24
This Drawing is the Property of GENERAL ELECTRIC COMPANY, TRANSPORTATION SYSTEMS DIVISION. This drawing is loaned upon
the express condition that it shall not be reproduced in any manner, and shall be returned upon demand. It is submitted for evaluation
purposes and it, and the information contained therein, shall not be otherwise used nor disclosed to third parties without written
permission of General Electric Co. (Made on Word)
 GE Transportation Systems

Applied Practices

4/4/12 First Made For: Various Diesel Engines Rev. F

6.2 Spotface, Counterbore (Bolting Surfaces)

Diameter Tolerance: +1/16 -0 dia.

Concentricity Tolerance - The centerline of drilled hole and the center of spot face or
counterbore to be within .005” of each other.

The tolerances of Sect. A-A apply to spot face and counterbore.

Spot Face Area - The spot face will clean up a minimum of 90% of the area.

6.3 Countersink of Tapped Holes

Tapped hole shall be 120° countersink 1/64” over the major diameter of thread sizes,
up to and including 1/2” and 1/32” over the major diameter of thread for sizes over
1/2”. The angular tolerance of the countersink is ± 5°. The tolerance on the
diameter of the countersink +1/32 -0.

6.4 Tube and Pipe Countersinks

Tube and pipe will have the ID chamfered at the ends to open the cut end so that the
ID at the cut end will be no smaller than the uncut area of the pipe. The chamfer not
to exceed half the wall thickness.

Author: MD Garred, 6/22/61 Approval: EC Przypsnzy 41A213280

Issued: GETS Drafting BUS. AREA: RLE DIST: 3012, 890 Sheet 25 of 25
This Drawing is the Property of GENERAL ELECTRIC COMPANY, TRANSPORTATION SYSTEMS DIVISION. This drawing is loaned upon
the express condition that it shall not be reproduced in any manner, and shall be returned upon demand. It is submitted for evaluation
purposes and it, and the information contained therein, shall not be otherwise used nor disclosed to third parties without written
permission of General Electric Co. (Made on Word)
 GE Transportation Systems

Applied Practices

4/4/12 First Made For: Various Diesel Engines Rev. F

6.5 External Thread Chamfers

The point shall be flat and chamfered from .007” below the minor diameter to 1/64”
below the minor diameter, the length of point to be from ½ to 1-½ threads.

6.6 Countersink of Drilled & Reamed Holes Flat Surface

Break edge of all holes drilled or reamed with 120° countersink by 1/16 ± 1/32.

6.7 Curved Surface

Break edge of all holes drilled or reamed with 120° countersink. When the ratio of
the hole diameter to the radius of the curved surface is large so that the countersink
will not break the edge all around a minimum of 1/32” when the maximum chamfer is
1/8”, the hole will meet to be chamfered by hand.

6.8 Finish

Finish on countersink not to exceed 500 microinch. See Sect. A-A.

7 TAPERS - BLUEING

The following method shall be applied for inspecting tapers by blueing:

1. Be certain that the gage is within the calibration schedule and that the work piece
and gage are in good condition and free of all tool marks, nicks, burrs or other
damage.

2. The portion of the work to be disconnected and the gage must be thoroughly
washed in an approved solvent and dried so that all lint, dirt, oil film and other
foreign material is removed.

3. A light film of Dykem Hi-Spot Blue No. 107 is to be applied to the gage in such a
way that a uniform film, free of lint, streaks and other abnormalities will result.
The film shall be a light blue color and be transparent so that the metallic finish
of the gage surface is clearly visible.

4. The gage is then carefully applied to the work so that it does not rub the work
until it is in complete contact. The gage may adhere slightly to the taper so that a
light tap with a lead or plastic hammer is necessary to knock it loose.

Author: MD Garred, 6/22/61 Approval: EC Przypsnzy 41A213280

Issued: GETS Drafting BUS. AREA: RLE DIST: 3012, 890 Sheet 26 of 26
This Drawing is the Property of GENERAL ELECTRIC COMPANY, TRANSPORTATION SYSTEMS DIVISION. This drawing is loaned upon
the express condition that it shall not be reproduced in any manner, and shall be returned upon demand. It is submitted for evaluation
purposes and it, and the information contained therein, shall not be otherwise used nor disclosed to third parties without written
permission of General Electric Co. (Made on Word)
 GE Transportation Systems

Applied Practices

4/4/12 First Made For: Various Diesel Engines Rev. F

5. Hold the gage firmly in contact with the work. The gage may be rotated a
maximum of 1/8 of a turn.

6. Carefully remove the gage so that it does not rub the work and destroy the blue
pattern.

7. Examine the blue pattern on the work. In order for it to be acceptable the blue
pattern must be uniform with no single non-blue area greater than 25% of the
total allowed non-blue area.

8. If no gage is available, the parts are to be inspected per 41A22180.

8 VENDOR SUPPLIED COMMERCIAL PARTS

8.1 Pipe

Unless otherwise specified, pipe will conform to GE Spec B30E501. This

specification covers low-carbon open hearth or basic oxygen steel pipe; the
dimensions of this pipe are the same as outlined in American Standards Association
ASA B36.10 Schedule 40. The material composition and dimensional tolerances are
specified in B30E5.

8.1.1 Minimum Bend Radius

The minimum bend radius will be no less than that formed when the pipe is bent
around a mandrel, whose diameter is 12 times the nominal diameter of the pipe.

8.1.2 Tubing
The term tubing will apply when the OD, or OD and wall thickness are specified.

The following will outline the specifications to be used for tubing when not otherwise
specified.

Author: MD Garred, 6/22/61 Approval: EC Przypsnzy 41A213280

Issued: GETS Drafting BUS. AREA: RLE DIST: 3012, 890 Sheet 27 of 27
This Drawing is the Property of GENERAL ELECTRIC COMPANY, TRANSPORTATION SYSTEMS DIVISION. This drawing is loaned upon
the express condition that it shall not be reproduced in any manner, and shall be returned upon demand. It is submitted for evaluation
purposes and it, and the information contained therein, shall not be otherwise used nor disclosed to third parties without written
permission of General Electric Co. (Made on Word)
 GE Transportation Systems

Applied Practices

4/4/12 First Made For: Various Diesel Engines Rev. F

STANDARD SIZES
TUBE OD NOMINAL WALL THICKNESS
1/4 .049
5/16 .058
3/8 .065
1/2 .083
5/8 .083
3/4 .095
7/8 .109
1 .109
1-1/4 .120
1-1/2 .120
2 .134

8.1.3 Material
Unless otherwise specified, tubing will conform to GE Spec B50E147A. This
specification covers cold drawn and annealed seamless low-carbon steel tubing for
hydraulic applications. The material composition and dimensional tolerances are
specified in B50E147.

Any specifications not covered by the GE specifications, will be in accordance with

the AISI Steel Products Manual for Tubular Steel Products.

8.2 Pipe Fittings

8.2.1 Screwed Pipe Fittings

Screwed pipe fittings unless otherwise specified, shall meet the minimum conditions
of ASA B16.19-1951, Malleable Iron Screwed Fittings, Class 300.

8.2.2 Butt-Welded Fittings

Butt-welding fitting shall be made to the specifications of ASA B16.9-1958, American
Standard Steel Butt-Welding Fittings. The material and bursting strength shall equal
that of the pipe to which the fitting is welded, but unless otherwise specified, the
fitting should not be weaker than schedule 80 seamless steel pipe ASA B36.10.

8.2.3 Tube Fittings

The fittings to be used with steel tubing unless otherwise specified, are FLODAR
self-flaring fittings with extra heavy wedge inserts. The FLODAR part numbers will
contain the code “BAX”.

Author: MD Garred, 6/22/61 Approval: EC Przypsnzy 41A213280

Issued: GETS Drafting BUS. AREA: RLE DIST: 3012, 890 Sheet 28 of 28
This Drawing is the Property of GENERAL ELECTRIC COMPANY, TRANSPORTATION SYSTEMS DIVISION. This drawing is loaned upon
the express condition that it shall not be reproduced in any manner, and shall be returned upon demand. It is submitted for evaluation
purposes and it, and the information contained therein, shall not be otherwise used nor disclosed to third parties without written
permission of General Electric Co. (Made on Word)
 GE Transportation Systems

Applied Practices

4/4/12 First Made For: Various Diesel Engines Rev. F

8.3 Lockwashers

The tolerances and dimensions of ASA B27.1-1958 (American Standards

Association) shall apply for any unspecified dimensions for lockwashers.

8.4 Plain Washers

The tolerances and dimensions of ASA B27.2-1958, shall apply for any unspecified
dimensions for plain washers.

8.5 Hexagon Bolts

All hexagon head bolts unless specifically stated, otherwise will conform to ASA
B18.2-1960, Finished Hexagon Bolts. The bolt material shall be equivalent to, or
stronger than SAE Grade 5. Bolt heads shall be marked in accordance with ASA
B18.2-1960 Appendix IV, or the GE material specification number. Vendor items will
use these bolts where hexagon head bolts are applicable. Vendor items will not
have 7/16 or 9/16 bolt threads without the approval of the Product Engineer. GE
Series N22 bolts meet the requirements of this drawing. Threads shall conform to
Section 5 of this drawing.

8.6 Studs

When not otherwise specified, the material for studs shall meet or exceed the
physical requirements of SAE Grade 5. When not otherwise specified, the threads
will be in accordance with Section 5 of this drawing.

8.7 Track Bolts

On applications where Track Bolts are specified, they shall meet the requirements of
ASA B18.10-1952, Oval Neck Track Bolts. Sizes in odd sixteenths are not to be
used unless authorized by GE Product Engineering. The material shall meet or
exceed the requirements of ASTM A-183, Track Bolts, Carbon Steel, 110,000 psi
tensile minimum. The threads shall conform to Section 5 of this drawing and have a
Class 2A fit. The nuts for track bolts will be as shown below and be hexagonal.

8.8 Nuts

All nuts for diesel engines will be hexagonal unless otherwise specified by Product
Engineering. Dimensionally, the nuts will conform to ASA B18.2-1960, Finished
Hexagon and Hexagon Jam Nuts, and Finished Hexagon Slotted Nuts. Material will
be in accordance with or exceed the physical requirements of SAE Grade 5. GE

Author: MD Garred, 6/22/61 Approval: EC Przypsnzy 41A213280

Issued: GETS Drafting BUS. AREA: RLE DIST: 3012, 890 Sheet 29 of 29
This Drawing is the Property of GENERAL ELECTRIC COMPANY, TRANSPORTATION SYSTEMS DIVISION. This drawing is loaned upon
the express condition that it shall not be reproduced in any manner, and shall be returned upon demand. It is submitted for evaluation
purposes and it, and the information contained therein, shall not be otherwise used nor disclosed to third parties without written
permission of General Electric Co. (Made on Word)
 GE Transportation Systems

Applied Practices

4/4/12 First Made For: Various Diesel Engines Rev. F

material C2L1 will meet the minimum requirements of SAE Grade 5. GE N203,
N216 series nuts and N213 series jam nuts are the minimum acceptable for use on
diesel engines.

8.9 Molded or Extruded Rubber

Molded or extruded rubber products will be supplied without coatings unless required
by the procurement drawing.

9 TOLERANCES

9.1 Tolerances - Machined Surface to Unfinished Surface

The tolerance to be applied to castings weldments or other parts when a dimension

is used between an unfinished surface and a finished surface is ± 1/16”. Here a
rolled surface 250 microinch or smoother is considered finished; a burned surface
rougher than 250 microinches is an unfinished surface.

9.2 Layout for Machining - Sand Castings

As a general statement, sand castings must be plaid out to determine a starting point
for machining. This is especially true of large castings in which the casting must be
shifted when determining the starting point for machining to even up the available
stock for machining so that all surfaces will furnish die to core shift, mold closure or
shift. In large castings if sufficient finishing stock were allowed to take care of all
core shift, etc., within shifting the layout, the casting would be prohibitively heavy,
and required additional machine cuts on all coatings. When specified on the detail
drawing the machining is to be started or located as shown on the drawing.

As used here, “layout” can mean the use of a jig or fixture to determine the initial
machining point. This is not necessarily the machine tool fixture, but is a fixture
designed so that the operator can determine the amount the casting need be shifted
or shimmed in the machine tool fixture, so that the finished machined part will be a
useful parts.

On small parts it may be possible to design machine tool fixtures so that the casting
can be located without checking for layout prior to machining. However, locating
points should be coordinated with the foundry pattern shop, as the drawing does not
necessarily specify how the mold should be parted or cored.

When elaborate tooling fixtures are designed, the foundry should be consulted in
regard to locating points when these are not specified on the drawing. This is

Author: MD Garred, 6/22/61 Approval: EC Przypsnzy 41A213280

Issued: GETS Drafting BUS. AREA: RLE DIST: 3012, 890 Sheet 30 of 30
This Drawing is the Property of GENERAL ELECTRIC COMPANY, TRANSPORTATION SYSTEMS DIVISION. This drawing is loaned upon
the express condition that it shall not be reproduced in any manner, and shall be returned upon demand. It is submitted for evaluation
purposes and it, and the information contained therein, shall not be otherwise used nor disclosed to third parties without written
permission of General Electric Co. (Made on Word)
 GE Transportation Systems

Applied Practices

4/4/12 First Made For: Various Diesel Engines Rev. F

especially true when castings are ordered from drawings where mold parting and
coring is not shown.

When buying castings from a source other than the original source for a particular
parts, where machine tooling exists, new patterns must be made with the existing
tooling locating points in mind; otherwise, the new source may put parting planes in a
location where the existing tooling will be useless.

10 WELDING

10.1 General

General information on welding symbols, weld preparation is contained in L&CE

Report DF58LC423.

10.2 Pipe

Welding of pipe and fittings to be in accordance with P8B-E11 and P8B-EP20 for
carbon content .25% max., and .26% to .35% respectively. When welding seamless
or other low carbon steel pipe to American Standard Steel Butt-Welding Fittings
B16.9-1958, use process P8B-EP20. Pipe dimensioning will be in accordance with
499A981AB. Butt-welding ends will be made in accordance with American Standard
B16.25-1958.

10.3 Tolerances

LINEAR DIMENSIONS of weldments will have a tolerance of ± 1/8”. This tolerance

does not apply to dimensions of individual pieces but only to assembly dimensions.

Author: MD Garred, 6/22/61 Approval: EC Przypsnzy 41A213280

Issued: GETS Drafting BUS. AREA: RLE DIST: 3012, 890 Sheet 31 of 31
This Drawing is the Property of GENERAL ELECTRIC COMPANY, TRANSPORTATION SYSTEMS DIVISION. This drawing is loaned upon
the express condition that it shall not be reproduced in any manner, and shall be returned upon demand. It is submitted for evaluation
purposes and it, and the information contained therein, shall not be otherwise used nor disclosed to third parties without written
permission of General Electric Co. (Made on Word)
 GE Transportation Systems

Applied Practices

4/4/12 First Made For: Various Diesel Engines Rev. F

ANGULAR TOLERANCE of weldments will not exceed ± 1°.

FLATNESS OF PLATE MEMBERS

For any A, Y = 1/16” per foot of B, but never to exceed 1/8” total.

10.4 Cut Edges (Sawed, Burned, Edges (includes Angles of Cut)

Unfinished edges, unless otherwise specified, will have a maximum surface

roughness of 500 microinches. Burned and sheared tolerance of the angle of cut will
be square or to the drawing dimension within ± 2°. Sawed tolerance of the angle of
cut will be ± 1°.

10.5 Linear Tolerances Cut Edges (includes Angle of Cut)

Burned ± 1/8”

Sawed ± 1/16”

Sheared ± 1/16”

10.6 Arc Welding Process Interchangeability

FOR CARBON AND LOW ALLOY* STRUCTURAL STEELS.

See Arc Welding Process Interchangeability 41A204889

11 DEBURRING

The following general rules are provided by Engineering to guide Planning, Methods,
and Inspection in deciding to what extent sharp edges, burrs, weld splatter, welding
flux and shot are to be removed. These are general rules and thus will leave
specified decisions to the discretion of Manufacturing. They are in no way to distract

Author: MD Garred, 6/22/61 Approval: EC Przypsnzy 41A213280

Issued: GETS Drafting BUS. AREA: RLE DIST: 3012, 890 Sheet 32 of 32
This Drawing is the Property of GENERAL ELECTRIC COMPANY, TRANSPORTATION SYSTEMS DIVISION. This drawing is loaned upon
the express condition that it shall not be reproduced in any manner, and shall be returned upon demand. It is submitted for evaluation
purposes and it, and the information contained therein, shall not be otherwise used nor disclosed to third parties without written
permission of General Electric Co. (Made on Word)
 GE Transportation Systems

Applied Practices

4/4/12 First Made For: Various Diesel Engines Rev. F

from established “Good Machine Shop Practice.” If specified questions come up

where there is no precedence, the planner may wish to ask the Production Engineer
for advice.

1. There must be no weld splatter, shot, flux or burrs that can become loose:

A. Inside any cavity that is to contain moving or insulated parts.

B. Near any opening where it could fall into such cavities.

C. Where it could interfere or get between mating surfaces.

2. All tapped hole must be free of chips, butts, weld splatters and shot.

4. Edges around bolt holes must be deburred at both ends of the hole.

5. Register fits must be free of burrs, sharp corners, and nicks, and no more than
5% of the fit area should be lost by deburring.

6. Where a specific chamfer or radius is required on a part, it will be delineated on

the drawing. Otherwise, the rules shown above will suffice as Engineering’s
specifications. See Section 6. Sharp edges and loose or adhering burrs must
be avoided or removed in the form of a radius, rounded chamfer, etc. They may
be made dull by any process the manufacturer prefers, provided the radius or
equivalent is held between .006” min. and .015” max. except in soft materials,
such as aluminum, where the radius or equivalent may be .030” max. Gages
are not required and inspection may be made by feel or visual means.

A sharp cornered flat chamfer, a concave radius, or any other form which leaves
an abrupt edge is not acceptable. The general purpose of breaking sharp
edges is to facilitate handling of parts, improve appearance, and prevent mating
parts form being cut and scored. Any form of edge which will not satisfy these
requirements is not acceptable.

12 KNURLING

Unless otherwise specified, knurling will be in accordance with K-4015012.

Author: MD Garred, 6/22/61 Approval: EC Przypsnzy 41A213280

Issued: GETS Drafting BUS. AREA: RLE DIST: 3012, 890 Sheet 33 of 33
This Drawing is the Property of GENERAL ELECTRIC COMPANY, TRANSPORTATION SYSTEMS DIVISION. This drawing is loaned upon
the express condition that it shall not be reproduced in any manner, and shall be returned upon demand. It is submitted for evaluation
purposes and it, and the information contained therein, shall not be otherwise used nor disclosed to third parties without written
permission of General Electric Co. (Made on Word)
 GE Transportation Systems

Applied Practices

4/4/12 First Made For: Various Diesel Engines Rev. F

13 CLEANING, CORROSION PREVENTION & STORAGE

13.1 General

This instruction applies to all drawings calling for this Applied Practice drawing
number, except where modified or added to on the specific drawing. All parts to be
clean, free of foreign material, protected from corrosion, and packed, stored, or
shipped so as not to reduce the quality of the part.

13.2 Cleaning

Internal passageways and cavities will. be clean. They will contain no weld scale,
chips or foreign material. There will be no coatings other than corrosion preventives
or paint as specified on the drawing or herein.

If filtered fuel passages contain particles of a size larger than 2 microns, they are
considered to be dirty.

Lubricating oil passages and crankcase cavities will be considered dirty if they
contain particles of a size larger than 20 microns.

The above statements do not mean that these surfaces may be covered with a layer
of dirt or dust of this particle size, or even a layer of talcum powder size. A layer of
dust, dirt, talcum powder, or smaller is not acceptable. Any size of foreign material
on a surface area of more than 1/4% of the total area of a given piece is not
acceptable.

Internal parts and surfaces where the surface finish is 250 microinches or better will
be clean. No foreign material is acceptable on bearing surfaces or mating surfaces.

Acid etching or pickling, wire brushing, scraping, sand tumbling, blasting or any other
cleaning method which will result in a clean part to the surface finish of the drawing
requirement is acceptable for removing corrosion and weld scale flux or spatter.

For pickling low carbon steel pipes use Process P4D-EP8.

13.3 Corrosion Prevention

The corrosion of parts may be controlled by several means.

Painting - Paint is considered an adequate surface covering for the prevention of

corrosion. However, paint is not to be used except where specified on a drawing.

Author: MD Garred, 6/22/61 Approval: EC Przypsnzy 41A213280

Issued: GETS Drafting BUS. AREA: RLE DIST: 3012, 890 Sheet 34 of 34
This Drawing is the Property of GENERAL ELECTRIC COMPANY, TRANSPORTATION SYSTEMS DIVISION. This drawing is loaned upon
the express condition that it shall not be reproduced in any manner, and shall be returned upon demand. It is submitted for evaluation
purposes and it, and the information contained therein, shall not be otherwise used nor disclosed to third parties without written
permission of General Electric Co. (Made on Word)
 GE Transportation Systems

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4/4/12 First Made For: Various Diesel Engines Rev. F

All ferrous castings will be painted with a sealer as outlined in 41A213279, Sheet 10,
unless otherwise specified.

Other Surface Coatings - The main surface coatings to be sued on diesel engine
parts will be oils, greases, and waxes to which suitable corrosion inhibitors have
been added.

This instruction will not attempt to specify which process will be used to clean a
surface prior to the application of a corrosion preventative. In some cases, no
additional surface preparation will be required or the application of a corrosion
preventative. The particular application will need to be studied.

In process, and in plant temporary storage, corrosion resistance may be obtained by

use of a soluble oil, such as GE Material D6D4. At most, temporary storage would
mean three days. In the case of critical bearing areas, such as crankshafts, piston
pins, and gear boxes, D6D4 is not suitable as a corrosion preventative for more than
a few hours. At times of high humidity, care must be exercised in using D6D4 as a
corrosion preventive.

A minimum solution of 3% by volume of soluble oil to the mixture of water and oil
should be used when corrosion preventive properties are desired.

A material suitable for long time storage is a lubricating oil to which polar additives
have been added, and other materials which tend to make the mixture stick to the
metal surface tighter than oil alone, thus expelling air and moisture from the surface
of the metal. Such a material would be GE Material D6C4.

Another material similar to the above, but which has more body when it dries is US
Government Spec. MIL-C-972, Grade 2, such as Tectyle 502C. This material readily
mixes with engine lubricating oil and is the only material approved at this time for use
in engine crankcases, when the engine is prepared for shipment. This material
leaves a soft waxy film when it dries. When the oil or waxy preservatives are used
for engine parts which might be handled so a to rub the preservative off, protective
wrapping of waxpaper or oil resistant paper should be used.

There are other materials which dry to a hard surface, such as the GE D6C6 series
material, MIL-C-972, Grade 1 such as Tectype 890. These materials are suitable for
the external finished surfaces of large castings and other parts which require
handling of a nature that would require the corrosion preventative to stand some
abrasion. These preservatives should be used only where there is no other
economical method to preservative the part, because this material is quite difficult to
remove when thoroughly dry.

Author: MD Garred, 6/22/61 Approval: EC Przypsnzy 41A213280

Issued: GETS Drafting BUS. AREA: RLE DIST: 3012, 890 Sheet 35 of 35
This Drawing is the Property of GENERAL ELECTRIC COMPANY, TRANSPORTATION SYSTEMS DIVISION. This drawing is loaned upon
the express condition that it shall not be reproduced in any manner, and shall be returned upon demand. It is submitted for evaluation
purposes and it, and the information contained therein, shall not be otherwise used nor disclosed to third parties without written
permission of General Electric Co. (Made on Word)
 GE Transportation Systems

Applied Practices

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13.4 Storage

Parts in process, temporary storage, transit, or long time storage will be adequately
packaged, so that no damage will result from factory dirt, corrosion or handling.

Such pieces as crankshafts, camshafts, pistons, piston pins, connecting rods, and
gears will require special racks, individual packaging, and dust covers to adequately
protect the parts in process, in transit, or in storage.

13.5 Vendors

Vendors will take the necessary steps to allow material to reach the engine assembly
receiving area in a condition which will meet the drawing specifications, i.e., the
material will be free of nicks, scratches, dirt, corrosion or other damage due to
handling or faulty packaging, which would allow pieces to run other material, or allow
the entrance of dirt or moisture in such a manner which would cause temporary or
permanent damage t the part.

For whatever reason a vendor may want to repair and/or ship new non-conforming
material, he will first submit four (4) copies of a Request for Deviation Approval or
Repair Authorization, form LC-D-2795-A (1-64), to

Process Control Engineer, Incoming Material

Quality Control, Bldg. 14 - Room 207
Diesel Engine Project, L&CE Dept.

Repair and/or shipping of the subject material will only be made after the Process
Control Engineer has returned a copy of this request indicating allowable disposition.

14 PART NUMBERS, CATALOG NUMBERS, SERIAL NUMBERS

For parts on which a part number, catalog number or serial number is called for on
the drawing and no other instructions have been received, this instruction will apply.
The normal drawing callout will be:

Permanently Mark:

Part No. 41------- P--

Cat. No. ---X---- &
Serial No.

Author: MD Garred, 6/22/61 Approval: EC Przypsnzy 41A213280

Issued: GETS Drafting BUS. AREA: RLE DIST: 3012, 890 Sheet 36 of 36
This Drawing is the Property of GENERAL ELECTRIC COMPANY, TRANSPORTATION SYSTEMS DIVISION. This drawing is loaned upon
the express condition that it shall not be reproduced in any manner, and shall be returned upon demand. It is submitted for evaluation
purposes and it, and the information contained therein, shall not be otherwise used nor disclosed to third parties without written
permission of General Electric Co. (Made on Word)
 GE Transportation Systems

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4/4/12 First Made For: Various Diesel Engines Rev. F

14.1 Application and Inspection

All parts will be properly identified with part numbers and, if specified on the drawing,
with a catalog number and serial number. Permanent marking will not be placed on
mating surfaces, fillets, radii, notches, corners or in any manner which would tend to
weaken the part. Parts which have a finish better than 125 micro inches all over will
be permanently marked only if and where stated on the drawing. When a part has
no identification attached, it is to be placed in a suitable container to which the
identification is affixed.

Quality Control personnel are responsible for parts being properly identified and any
questions on the proper location of markings must be right to the attention of Product
Engineering.

14.2 Serial Numbers

14.2.1 General
The serial number will consist of the year, the month an the number of the part
produced that month.

Example: 6403001

64 03 001

Year: 1964 3rd Month First part produced in that month

The serial number will always contain at least seven digits. If more than 999 parts
are produced in any month, additional digits may be added.

Similar parts called for on one drawing number, being distinguished only by different
part numbers or group numbers, will be assigned serial numbers from the same
sequence.

14.2.2 TSBD Manufactured or Machined Parts

All parts machined in TSBD in Erie will have the letter “E” preceding the serial
number and be separated from it by a dash. Example: E-6403001

14.2.3 Vendor (or GE depts. Other than TSBD) Manufactured or Machined Parts
A. For purchased items having a nameplate attached (containing the vendor’s
serial number and name), the serial number sequence and series is left to the
option of the vendor, unless otherwise specified on the drawing.

Author: MD Garred, 6/22/61 Approval: EC Przypsnzy 41A213280

Issued: GETS Drafting BUS. AREA: RLE DIST: 3012, 890 Sheet 37 of 37
This Drawing is the Property of GENERAL ELECTRIC COMPANY, TRANSPORTATION SYSTEMS DIVISION. This drawing is loaned upon
the express condition that it shall not be reproduced in any manner, and shall be returned upon demand. It is submitted for evaluation
purposes and it, and the information contained therein, shall not be otherwise used nor disclosed to third parties without written
permission of General Electric Co. (Made on Word)
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4/4/12 First Made For: Various Diesel Engines Rev. F

B. All other purchased items will use the general serial number construction as
outlined above.

14.2.4 Vendor Parts Identification

All purchased items (sources other than TSBD) must be identified by either the
vendor’s name (nameplate) or a trademark or a vendor code the vendor code will
precede the serial number and be separated from it by a dash. If a part does not
require a serial number, the vendor code will precede the part number and be
separated from it by a dash. The approved vendor codes for new and
remanufactured parts are listed below:

VENDOR VENDOR CODE

AMERICAN BEARING A
AMERICAN BOSCH AB
ABEX A
ALCO POWER INC. ALC
ALCOA A
A&N FOUNDRIES LTD AN, A
BENDIX CO. BX, ST
BOHN, ALUM & BRASS B
BETHLEHEM STEEL B
B&G MACHINE BG
BULLARD CASTING INC. BCI, B
BURKE TOOL & MACHINE BTM
BURGESS NORTON BN
CAMERON IRON WORKS CIW
C-K PRECISION CK
CLEVITE C
COOPER BESSMER CB
DOMINION FORGE D
DRESSER-CLARK DC, D
DURHAM DHM
ELLIOTT TURBO EL
ELMIRA, GE FUNDRY EE, E
ERIE GE (OTHER THAN TSBD) ER
ERIE GE FOUNDRY E
ESTANDA S
FEDERAL DROP FORGE F
FRITZ WINTER F

Author: MD Garred, 6/22/61 Approval: EC Przypsnzy 41A213280

Issued: GETS Drafting BUS. AREA: RLE DIST: 3012, 890 Sheet 38 of 38
This Drawing is the Property of GENERAL ELECTRIC COMPANY, TRANSPORTATION SYSTEMS DIVISION. This drawing is loaned upon
the express condition that it shall not be reproduced in any manner, and shall be returned upon demand. It is submitted for evaluation
purposes and it, and the information contained therein, shall not be otherwise used nor disclosed to third parties without written
permission of General Electric Co. (Made on Word)
 GE Transportation Systems

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4/4/12 First Made For: Various Diesel Engines Rev. F

VENDOR VENDOR CODE

GOVE CITY GC
CLACIER METAL CO GL
HANLON & WILSON HW
HEAD WRITSON H
HEPBURN J.T. H
HITCHINER H
HOWMET LA PORTE IND HLP
INTERSOL-RAND I
INDIA IN
KAISER ALUMINUM ERIE KAE
LADISH L
LARGE GAS TURBINE DIV (GE G
GREENVILLE, SC)
MITSUBISHI HEAVY IND
KOBIE WORKS K
HIROSHIMA WORKS H
MOTOR & MACH. CSTGS. CO. MMC, M
METACAL S
MUTUAL METALS PRODUCTS MMP
NATIONAL FORGE NF, N
OHIO INDUSTRIES (PARK) OP, O
OMES - FALKNERS O
ONTARIO, CALIFORNIA OS
SERVICE SHOP
PAXTON MITCHEL PM
PRECISION ENGINEERING PE
ROPER PUMP RO
SARDELLO CO SAR
SAUDER S
SHEEPBRIDGE STOKES S
SMITH CLAYTON S
ST. LOUIS SERVICE SHOP SL
TIME MACHINE T
TRANSUE WILLIAMS T
WOODARD GOVERNOR WG

Author: MD Garred, 6/22/61 Approval: EC Przypsnzy 41A213280

Issued: GETS Drafting BUS. AREA: RLE DIST: 3012, 890 Sheet 39 of 39
This Drawing is the Property of GENERAL ELECTRIC COMPANY, TRANSPORTATION SYSTEMS DIVISION. This drawing is loaned upon
the express condition that it shall not be reproduced in any manner, and shall be returned upon demand. It is submitted for evaluation
purposes and it, and the information contained therein, shall not be otherwise used nor disclosed to third parties without written
permission of General Electric Co. (Made on Word)
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4/4/12 First Made For: Various Diesel Engines Rev. F

15 FITS

Screw Threads - See Section 5.

16 INSPECTION

16.1 General

Quality Control is responsible to see that all material meets the drawing specification
that is used in final assembly, or shipped as spare parts, so that when the end
product is shipped it will maintain the Company’s reputation for quality.

16.2 Incoming Material

Quality Control is responsible for setting up procedures for adequately maintaining

quality control over material at the source. On vendor supplied items, it will be
necessary to check material at the source or as the material is received.

Some material will require 100% inspection. Crankshafts and main frames are
examples of items for which each item must be checked, and the measurements
recorded. These measurement records are to be kept on file by serial numbers for
ready reference, and a copy is to be forwarded to Product Engineering. The data
may be kept on microfilm after two years to facilitate storage. After 15 years, the
data may be discarded. Quality Control can arrange through Purchasing to have the
records made at the source, but this will not relieve them of the responsibility for the
quality of material in the finished product.

All material will be spot checked on arrival, and the extent of the spot check will be
left up to the Supervisor of Quality Control. Material is to be defected for any
condition which will cause it to not meet the drawing specifications. These defects
may be dimensional, handling damage, corrosion, etc. Quality Control will defect
items in storage racks, bins, or warehouse for any of the above faults.

Quality Control will initiate procedures to have defective material savaged by rework
to bring the material into drawing specifications, by rework due to Engineering
Instructions to alter the material to a serviceable condition, or returned to source.

16.3 Magnetic Particle Inspection

All drawings specifying inspection per magnaglo shall be inspected per 41213788
unless otherwise specified.

Author: MD Garred, 6/22/61 Approval: EC Przypsnzy 41A213280

Issued: GETS Drafting BUS. AREA: RLE DIST: 3012, 890 Sheet 40 of 40
This Drawing is the Property of GENERAL ELECTRIC COMPANY, TRANSPORTATION SYSTEMS DIVISION. This drawing is loaned upon
the express condition that it shall not be reproduced in any manner, and shall be returned upon demand. It is submitted for evaluation
purposes and it, and the information contained therein, shall not be otherwise used nor disclosed to third parties without written
permission of General Electric Co. (Made on Word)
 GE Transportation Systems

Applied Practices

4/4/12 First Made For: Various Diesel Engines Rev. F

16.4 Local Manufacture

Quality Control will maintain an adequate system of inspection either in the machine
area or in the assembly area, which will adequately control quality in assemblies or
spare parts.

16.5 Drawing Changes

Quality Control will monitor Alteration Notices. Any material in the factory which is
affected by an AN, will be inspected to see that the proper action has been taken.

17 DOWELS

17.1 Standard Straight Dowels

The standard dowel will be the N507 series of GE parts for uhardened, ground finish.

17.2 Dowels from Mill Supplied Stock

When dowels are made from standard stock, the diameter tolerances to apply are
the ones specified in the particular GE material specification. Only a nominal
dimension will be required for these tolerances to apply. Thus, if a drawing calls for
a pin material B4A2C3 and a nominal dimension of 3/8, the tolerance of the GE
material specification applies and the limiting dimensions for the resulting pin are
.3755 and .3745, since the GE material specification for this material gives a size
tolerance of ±.0005” on the diameter.

17.3 Finish

The surface roughness of “N” series pins will be no greater than 32 microinches.
Unspecified finish of other pins will be noted on the drawing or the mill finish will be
accepted otherwise. Pins are to be free from corrosion and pitting.

17.4 Taper Pins

The tolerance on the tape of taper pins will be ±.00007” per inch, measured on the
diameter along the axis when not otherwise specified.

Author: MD Garred, 6/22/61 Approval: EC Przypsnzy 41A213280

Issued: GETS Drafting BUS. AREA: RLE DIST: 3012, 890 Sheet 41 of 41
This Drawing is the Property of GENERAL ELECTRIC COMPANY, TRANSPORTATION SYSTEMS DIVISION. This drawing is loaned upon
the express condition that it shall not be reproduced in any manner, and shall be returned upon demand. It is submitted for evaluation
purposes and it, and the information contained therein, shall not be otherwise used nor disclosed to third parties without written
permission of General Electric Co. (Made on Word)
 GE Transportation Systems

Applied Practices

4/4/12 First Made For: Various Diesel Engines Rev. F

18 KEY WAY

Centerline of key way will be on centerline of shaft within tolerance Y.

Y (either side of centerline) for any radius Y = .0015.

When drawing specified “key ways must be in line” the centerline of one key way will
be on centerline of shaft within tolerance (.0015) and the centerline of the second
key way will be in line with the first key way within tolerance Y1 = .003 for any radius
R.

Author: MD Garred, 6/22/61 Approval: EC Przypsnzy 41A213280

Issued: GETS Drafting BUS. AREA: RLE DIST: 3012, 890 Sheet 42 of 42
This Drawing is the Property of GENERAL ELECTRIC COMPANY, TRANSPORTATION SYSTEMS DIVISION. This drawing is loaned upon
the express condition that it shall not be reproduced in any manner, and shall be returned upon demand. It is submitted for evaluation
purposes and it, and the information contained therein, shall not be otherwise used nor disclosed to third parties without written
permission of General Electric Co. (Made on Word)
 GE Transportation Systems

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4/4/12 First Made For: Various Diesel Engines Rev. F

Finishes:

19 CLASSIFICATION OF DIMENSIONS FOR QUALITY CONTROL

All numerically measured properties of parts and assemblies of the diesel engines
are divided into four classes as refined below. All specifications of material and
processes, dimensions, instructions, etc., appearing on drawings for the diesel
engines are mandatory and are to be assured by Quality Control No deviation from
the drawings will be automatically acceptable. Changes to drawing by AN is the
acceptable method in such situations.

Below are the symbols and the definition of the class of dimensions. Also, stated is
the maximum percentage of parts with the considered characteristic outside of limits,
that it is possible to be accepted by Quality Control, due to statistical methods of
inspection. This is not an acceptable quality limit for manufacture.

- Critical

If this characteristic is defective, it will cause hazardous conditions to personnel

operating or testing the product or it will cause complete failure of the product
to function.

- Major

If this characteristic is defective, it may cause complete or partial failure of the

product to function.

- Minor

If this characteristic is defective it could cause partial failure of the product to

function as intended.

Author: MD Garred, 6/22/61 Approval: EC Przypsnzy 41A213280

Issued: GETS Drafting BUS. AREA: RLE DIST: 3012, 890 Sheet 43 of 43
This Drawing is the Property of GENERAL ELECTRIC COMPANY, TRANSPORTATION SYSTEMS DIVISION. This drawing is loaned upon
the express condition that it shall not be reproduced in any manner, and shall be returned upon demand. It is submitted for evaluation
purposes and it, and the information contained therein, shall not be otherwise used nor disclosed to third parties without written
permission of General Electric Co. (Made on Word)
 GE Transportation Systems

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4/4/12 First Made For: Various Diesel Engines Rev. F

No Symbol - Incidental

If this characteristic is defective it would probably cause no failure of the

product to function as intended.

Quality Control will apply inspection or assurance plans which will allow no more
than the following percent defective parts to pass the system.

Critical 0%
Major 1%
Minor 4%
Incidental 10% (approx.)

On the drawings, the symbols will be located adjacent to the affected characteristic.
In the case where the class of each limit is different, appropriate leaders will indicate
the class of each limit.

Materials, processes, procedures, etc., other than the numerically measured

characteristics defined above will be controlled to assure 100% compliance to
specification.

20 VENDOR PROCESS CONTROL

Vendors (GE and outside) shall document and adhere to the specific manufacturing
process established by the vendor and/or the General Electric Company to produce
a component. The manufacturing process shall include the sequence of operations,
type of equipment, degree of inspection, type of measuring device, temperatures,
time, etc., which must be controlled to make the process repeatable.

These written manufacturing processes shall be submitted to the General Electric

Company by request.

The vendor shall not change the manufacturing process without specific written
approval by the General Electric Company. Requests for a change in the process
shall be submitted to Purchasing.

21 VENDOR WARRANTY

Seller warrants that the equipment covered by the specification will free from defects
in material, workmanship and title and will be of the kind and quality designated or
described therein. If it appears within two years after the date on which said
equipment is put in actual service by the final customer that the equipment delivered

Author: MD Garred, 6/22/61 Approval: EC Przypsnzy 41A213280

Issued: GETS Drafting BUS. AREA: RLE DIST: 3012, 890 Sheet 44 of 44
This Drawing is the Property of GENERAL ELECTRIC COMPANY, TRANSPORTATION SYSTEMS DIVISION. This drawing is loaned upon
the express condition that it shall not be reproduced in any manner, and shall be returned upon demand. It is submitted for evaluation
purposes and it, and the information contained therein, shall not be otherwise used nor disclosed to third parties without written
permission of General Electric Co. (Made on Word)
 GE Transportation Systems

Applied Practices

4/4/12 First Made For: Various Diesel Engines Rev. F

hereunder does not meet the warranty specified above, the seller shall thereupon
correct any defects, including nonconformance with the specifications either by
repairing any defective part or parts or by making available at the purchaser’s plant
or final customer’s location a repaired or replacement part.

22 DRAWING DEFINITIONS

Purpose: To define the types of drawings (other than production drawings) made by
Diesel Engine Engineering and establish their application and intended use.

22.1 Repair Drawings

Repair drawings were established to record engineering approved repairs to new
diesel engine parts which were manufactured incorrectly.

These repairs will not be cross-referenced on production drawings, however a

drawing list will be maintained and be available for engineering reference. The use
of these repair drawings must be specifically authorized by the responsible
engineer.

22.2 Rework Drawings

Rework drawings are inspection drawings to be used primarily by rebuild
manufacturing to determine whether used parts meet the necessary requirements to
make them reusable.

These drawings will be cross-referenced on the applicable production drawings.

When no rework drawing is specified the production drawing applies.

Example:

Author: MD Garred, 6/22/61 Approval: EC Przypsnzy 41A213280

Issued: GETS Drafting BUS. AREA: RLE DIST: 3012, 890 Sheet 45 of 45
This Drawing is the Property of GENERAL ELECTRIC COMPANY, TRANSPORTATION SYSTEMS DIVISION. This drawing is loaned upon
the express condition that it shall not be reproduced in any manner, and shall be returned upon demand. It is submitted for evaluation
purposes and it, and the information contained therein, shall not be otherwise used nor disclosed to third parties without written
permission of General Electric Co. (Made on Word)
 GE Transportation Systems

Applied Practices

4/4/12 First Made For: Various Diesel Engines Rev. F

22.3 Modification Drawings

These drawings are instructions for field modifications to correct engine effects.

Modification drawings are usually called for in an engineering brief and not cross-
referenced on a production drawing since the correction of defects normally results
in a permanent change to the production drawings.

22.4 Modernization Drawings

Modernization drawings depict a method to alter existing engine parts to conform to
a new and improved design.

Modernizations will be referenced on the production drawing along with the note
which obsoletes the old design in favor of the new design.

Example:

If a modernization drawing is available for a detail part on the assembly drawing this
will be cross-referenced by lining out the production drawing number and adding the
drawing number of the modernization drawing (See part 2 in example).

The general drafting practice, when re-drawing an original tracing will be to retain all
obsoleted groups and parts fore reference use by rebuild manufacturing. If space
limitation require the removal of obsolete groups, then a separate parts list will be
issued to retain this record. The parts list will retain the drawing number of the

Author: MD Garred, 6/22/61 Approval: EC Przypsnzy 41A213280

Issued: GETS Drafting BUS. AREA: RLE DIST: 3012, 890 Sheet 46 of 46
This Drawing is the Property of GENERAL ELECTRIC COMPANY, TRANSPORTATION SYSTEMS DIVISION. This drawing is loaned upon
the express condition that it shall not be reproduced in any manner, and shall be returned upon demand. It is submitted for evaluation
purposes and it, and the information contained therein, shall not be otherwise used nor disclosed to third parties without written
permission of General Electric Co. (Made on Word)
 GE Transportation Systems

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4/4/12 First Made For: Various Diesel Engines Rev. F

original drawing and the drawing number will be prefixed by the letters “RL”. The
following note will be added to the production drawing:

For complete parts list for obsolete groups, see RL-41C613999.

Author: MD Garred, 6/22/61 Approval: EC Przypsnzy 41A213280

Issued: GETS Drafting BUS. AREA: RLE DIST: 3012, 890 Sheet 47 of 47
This Drawing is the Property of GENERAL ELECTRIC COMPANY, TRANSPORTATION SYSTEMS DIVISION. This drawing is loaned upon
the express condition that it shall not be reproduced in any manner, and shall be returned upon demand. It is submitted for evaluation
purposes and it, and the information contained therein, shall not be otherwise used nor disclosed to third parties without written
permission of General Electric Co. (Made on Word)