TM 5-3805-248-14&P-4

TECHNICAL MANUAL

FOR SCRAPER, EARTH MOVING, MOTORIZED

DIESEL ENGINE DRIVEN

NSN 3805-01-153-1854

REPAIR PARTS

HEADQUARTERS, DEPARTMENT OF THE ARMY

AUGUST 1985
 TM 5-3805-248-14&P-4

TECHNICAL MANUAL HEADQUARTERS

DEPARTMENT OF THE ARMY
NO. 5-3805-248-14&P-4 Washington, DC 19 Aug 1985

TECHNICAL MANUAL

FOR

SCRAPER, EARTH MOVING, MOTORIZED

DIESEL ENGINE DRIVEN

NSN 3805-01-153-1854

REPAIR PARTS

REPORTING OF ERRORS
You can help improve this manual. If you find any mistakes or if you know of a way to improve the
procedures, please let us know. Mail your letter, DA Form 2028 (Recommended Changes to Publications
and Blank Forms) or DA Form 20282 located in the back of this manual direct to: Commander, US Army
Tank-Automotive Command, ATTN: AMSTAMBP, Warren, MI 483975000. A reply will be furnished
direct to you.

TABLE OF CONTENTS
General Description and Specifications
PAGE
Schematic................................................................................................................................................................................ 2
Basic Engine............................................................................................................................................................................ 5
Lubrication System ................................................................................................................................................................ 29
Cooling System ..................................................................................................................................................................... 35
Intake and Exhaust System................................................................................................................................................... 45
Fuel System and Governor.................................................................................................................................................... 59
Starting and Electrical System............................................................................................................................................... 77
Power Train - Power Transmission Unit.............................................................................................................................. 105
Steering and Braking System.............................................................................................................................................. 141
Chassis................................................................................................................................................................................ 175
Hydraulic System................................................................................................................................................................. 187
Cab, Gauges and Accessories............................................................................................................................................ 203
Scraper ................................................................................................................................................................................ 230
Service Equipment and Supplies......................................................................................................................................... 258

This technical manual is an authentication of the manufacturers commercial literature and does not
conform with the format and content specified in AR 310-3, Military Publications. This technical manual
does, however, contain available Information that is essential to the operation and maintenance of the
equipment.

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MACHINE Caterpillar machines are identified with SERIAL NUMBERS. Serial numbers are assigned to the
IDENTIFICATION chassis and to the engine. The chassis and the engine also carry ARRANGEMENT NUMBERS
and in some cases MODIFICATION NUMBERS. These numbers are shown on the serial number
plates and on the master plate in the operator’s compartment. For the location of the serial number plates, refer to the
Specification Section at the back of this Parts Book. Caterpillar dealers need these numbers to determine which
components were included on the machine when it was assembled at the factory. This permits accurate identification of
replacement part numbers.

ORDERING Quality Caterpillar Replacement parts are available from Caterpillar dealers throughout the world.
PARTS Their parts stocks are up to date and include all parts normally required to protect your investment
in Caterpillar machines. When ordering parts, your order should specify the quantity, part
number, part name and the serial number, arrangement number and any modification numbers of the machine for which
the parts are needed. If in doubt about the part number, please provide your dealer with a complete description of the
needed item.

HOW TO USE THE Caterpillar Parts Books include Indented Within each illustration is a
PARTS BOOK illustrations of the groups or Part Names parts list identifying each
assemblies which make up the serviceable part in the
machine. These illustrations show the standard illustration. When a part name is indented in this list, it
components plus many of the attachments available for means that serviceable item is a part of the serviceable
the machine. item under which it is indented.

The alphabetical index located in the front part of the Abbreviations and Symbols
book should be used to determine the page number on A Used to call attention to additional
which specific illustrations are shown. Reference to • information shown elsewhere with-
those pages will identify each of the individual in the illustration.
serviceable parts. R.H. Right Hand Refers to the side of
L.H. Left Hand the machine as viewed
Captions The caption under each from the operator’s
illustration identifies the part compartment.
number and name of the group or assembly shown. If C Indicates changes from the previous
more than one illustration is included for any group, the illustration of the same group or
caption identifies the specific machine serial numbers to assembly.
which each illustration applies. In some cases it is not O.D. Outside Diameter
possible to determine the specific machine serial I.D. Inside Diameter
numbers to which different illustrations are applicable. In N/S Not Serviced
those cases the caption identifies the illustration as "First Assem. Assembly
Type", "Second Type", etc. Reference to the actual in. Inch
group or assembly is necessary in those cases to ft Foot
determine which illustration should be used. cm Centimeter
Captions provide additional information such as page dm Decimeter
numbers where illustrations of sub assemblies are Note: Continuing improvement and advancement of
shown, information reguarding quantities used and other product design may cause changes to your machine
information intended to assist the user in determining which may not be included in this publication. Each
parts needs. publication is reviewed and revised, as required, to
update and include these changes in later editions.

Whenever a question arises regarding your Caterpillar

product, or this publication, please consult your
Caterpillar dealer for the latest available information.

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TABLE OF CONTENTS

ENGINE ARRANGEMENTS ARE LISTED STARTING ON PAGE 3

A Name Page
Name Page Connecting Rod and Piston ........................................... to
Aftercooler .....................................................................52 Control - Trailing Unit .................................................. 187
Aftercooler Water Lines.................................................53 Control Console .......................................................... 228
Air Cleaner.....................................................................44 Crankcase Guard ........................................................ 186
Air Compressor .............................................................47 Crankshaft....................................................................... 8
Air Compressor Lines....................................................46 Crankshaft Assembly ...................................................... 9
Air Dryer ......................................................................151 Cylinder Block ............................................................... 16
Air Lines - Turbocharger Cylinder Block Covers..................................................... 5
Inlet and Outlet .................................................45 Cylinder Head................................................................ 13
Air Tank .......................................................................141 D
Alternator .......................................................................88 Differential ................................................................... 133
Apron ........................................................................235 Differential and Bevel Gear ......................................... 134
Apron Cylinder.............................................................236 Differential Lock Control.............................................. 140
Apron Lift .....................................................................237 Draft Frame ................................................................. 230
Auxiliary Drive Pulley.....................................................25 Draft Frame Lines ....................................................... 231
B Drive Shaft .................................................................. 136
Back-Up Warning ..........................................................87 Dust Ejector................................................................... 58
Bowl ........................................................................238 E
Bowl Cylinder...............................................................240 Edge and Bit................................................................ 237
Brake ........................................................................249 Ejector ....................................................................... 242
Brake Actuator......................................................146,248 Ejector Cylinder........................................................... 244
Brake Control .......................................................142,245 Ejector Lines ............................................................... 241
C Engine Arrangements ..................................................... 3
Cab Window ................................................................209 Engine Compartment Shield ......................................... 57
Cab Windshield ...........................................................210 Engine Support ............................................................. 19
Camshaft .......................................................................11 Ether Starting Aid .......................................................... 93
Camshaft Assembly ......................................................12 Exhaust Extension ........................................................ 55
Cartridge...............................................................169,201 Exhaust Manifold........................................................... 55
Case Assembly............................................................222

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TABLE OF CONTENTS - CONTINUED

F Fumes Disposal ............................................................ 33

Name Page G
Fan - Defrosting...........................................................215 Name Page
Fan - Suction .................................................................41 Gauge - Oil Level ........................................................ 217
Fan Belt Drive................................................................23 Governor ................................................................ 61,125
Fan Belt Tightener.........................................................24 Governor Control........................................................... 59
Fender .................................................................182,185 Governor and Drive -
Filter - Aftercooler Coolant ............................................54 Transmission.................................................. 124
Filter - By-Pass ............................................................197 Governor and Fuel Injection
Filter - Fuel ....................................................................71 Pump................................................................ 60
Filter - Internal .............................................................197 Governor and Fuel Pump Drive .................................... 65
Filter - Primary Fuel .......................................................70 H
Filter - Transmission ....................................................127 Harness - Battery and Wiring ........................................ 81
Final Drive and Wheel .................................................138 Harness - Cab Pressurizer.......................................... 220
Flywheel.........................................................................25 Heater ................................................................ 218,227
Flywheel Housing ..........................................................26 Heater Lines................................................................ 224
Flywheel Housing Cover................................................27 Heater and Mounting................................................... 226
Frame and Case..........................................................174 Heater Wiring .............................................................. 225
Front Accessory Drive ...................................................24 Hitch ....................................................................... 183
Front Bumper ..............................................................177 Hood ....................................................................... 181
Front Housing - Engine..................................................20 Horn - Air..................................................................... 214
Front Housing Cover - Engine.......................................20 Hydraulic Tank and Filter ............................................ 198
Front Housing Fastener.................................................21 L
Front Timing Gear - Engine...........................................21 Lamp - Flood ................................................................. 84
Fuel Filter Lines .............................................................68 Lamp - Head ................................................................. 84
Fuel Injection Lines........................................................67 Lifting Eye...................................................................... 18
Fuel Injection Pump.......................................................63 Lighting and Wiring ....................................................... 76
Fuel Lines ......................................................................69 Lighting - Blackout.................................................. 85,254
Fuel Priming Pump ........................................................70 Literature ..................................................................... 253
Fuel Ratio Control..........................................................72
Fuel Tank ......................................................................74
Fuel Transfer Pump.......................................................66

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TABLE OF CONTENTS - CONTINUED

M
Name Page Name Page
Manifold and Screen - Pump - Transmission .................................................. 126
Transmission ..................................................123 Pump - Vane ............................................................... 168
Muffle r ........................................................................56 R
O Radiator......................................................................... 34
0oil Cooler - Brake.........................................................42 Radiator Guard............................................................ 185
011Oil Cooler - Engine ..................................................42 Radio Interference Suppression ................................... 87
Oil Cooler - Torque Converter .......................................43 Rear View Mirror ......................................................... 213
011 Filler - Engine .........................................................29 Retarder ...................................................................... 132
Oil Level Gauge.............................................................28 Retarder Control.......................................................... 130
Oil Level Guide ..............................................................28 Return Air Console...................................................... 223
Oil Lines - Engine ..........................................................31 Rocker Arm - Valve Mechanism ................................... 16
Oil Lines - Power Train................................................128 ROPS - Enclosed ........................................................ 206
Oil Lines - Remote Mount Filter.....................................32 Rubber Damper ............................................................ 22
Oil Pan ..........................................................................27 S
0il Pump.........................................................................30 Safety Tread................................................................ 229
Oil Pump Mounting Fastener.........................................29 Seat ....................................................................... 204
Oil Sampling ..................................................................30 Seat Suspension ......................................................... 202
Operator Compartment ...............................................178 Service Brake.............................................................. 150
P Servo-Receiver Steering Cylinder............................... 170
Paint and Lubricant......................................................252 Shaft and Pivot Assembly ........................................... 212
Planetary Transmission...............................................104 Slack Adjuster ...................................................... 149,250
Power Train Schematic ...................................................2 Solenoid Assembly...................................................... 101
Pressurizer ..................................................................219 Starting Motor - Electric................................................. 94
Protection Cover - Radiator Cap ...................................37 Steering Cylinder......................................................... 172
Pump ........................................................................166 Steering Gear.............................................................. 164
Pump - Double Vane ...................................................167 Steering Lines ............................................................. 155
Pump - Gear .........................................................132,166 Steering Lines - Cylinder............................................. 160
Pump - Scavenge - Transmission ...............................126

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TABLE OF CONTENTS - CONTINUED

Name Page Name Page

Steering Servo-Receiver Mounting.................................... Valve - Automatic Pressure Control
and Cylinder ................................................................171 and Selector ................................................................ 111
Switch - Disconnect .......................................................83 Valve - Automatic Selector.......................................... 115
Switch - Solenoid Assembly ........................................101 Valve - Automatic Shifting -
.............................................................................. Hydraulic Control............................................ 110
Valve - Breaker Relief ................................................. 200
Valve - Check.............................................................. 234
Valve - Control ..................................................... 147,193
Valve - Control Assembly..................................... 147,195
Tachometer Drive ..........................................................75 Valve - Double Check ................................................. 148
Tire .................................................................140,252 Valve - Governor Cut-Off -
Tire Inflation.................................................................154 Automatic Shifting .......................................... 116
Torque Control ..............................................................64 Valve - Pressure Reducing ......................................... 161
Torque Converter ........................................................122 Valve - Relief............................................................... 171
Transfer Gear ..............................................................120 Valve - Retarder Assembly ......................................... 131
Transmission Arrangement .........................................102 Valve - Shift Pressure ................................................. 114
Transmission Case and Covers ..................................103 Valve - Steering........................................................... 162
Transmission Control ..................................................117 Valve Mechanism - Engine ........................................... 15
Transmission Hydraulic Control ..................................108 Valve Mechanism Cover ............................................... 17
Trunnion - Engine ..........................................................22
Turbocharger .................................................................48
Turbocharger Cartridge .................................................50
Turbocharger Oil Lines..................................................51 W
Turn Stop.....................................................................186
Water Lines - Engine Oil Cooler....................................39
Water Lines - Retarder Oil Cooler .................................40
V Water Pump .................................................................. 37
Wheel - Rear ............................................................... 251
Valve - Air Control .......................................................196 Windshield Wiper ........................................................ 211
Valve Assembly ....................................................116,146 Wiring ....................................................................... 256

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WARRANTY STATEMENT
The Caterpillar 621B Tractor-Scraper is warranted by QUICK
Caterpillar Tractor Co. for 15 months or 1500 hours of REFERENCE GUIDE
operation, whichever occurs first. The warranty starts on TO MAJOR SECTIONS
the date found on the DA form 24089 in the log book.
Report all defects in material or workmanship to your
supervisor, who will take appropriate action through your
organizational maintenance shop.

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CATERPILLAR 621B TRACTOR

POWER TRAIN ARRANGEMENT

2
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CATERPILLAR 621B TRACTOR

CONSISTS OF: PAGE
CENTRAL STRUCTURE
1 6N4992 CAMSHAFT GROUP......................................................................................... 11
6 7N3516 CONNECTING ROD AND PISTON GROUP .................................................... 10
1 2W1732 CRANKSHAFT GROUP .................................................................................... 8
1 9N684 CYLINDER BLOCK COVER GROUP ............................................................... 5
1 4N2257 CYLINDER BLOCK GROUP ............................................................................. 6
UPPER STRUCTURE
1 4N2270 CYLINDER HEAD GROUP ............................................................................... 13
1 4N744 LIFTING EYE GROUP....................................................................................... 18
1 4N4953 VALVE MECHANISM COVER GROUP ............................................................ 17
1 4N2271 VALVE MECHANISM GROUP .......................................................................... 15
FRONT STRUCTURE
1 4N2264 FRONT ACCESSORY DRIVE GROUP............................................................. 24
1 4N2274 FRONT TIMING GEAR GROUP ....................................................................... 21
1 4N4965 FRONT HOUSING COVER GROUP ................................................................ 20
1 4N6006 FRONT HOUSING FASTENER GROUP .......................................................... 21
1 4N3911 FRONT HOUSING GROUP .............................................................................. 20
1 4N1,560 RUBBER DAMPER GROUP ............................................................................. 22
1 4N2276 SUPPORT GROUP ........................................................................................... 19
1 4N2273 TRUNNION GROUP.......................................................................................... 22
REAR STRUCTURE
1 7N9651 FLYWHEEL GROUP ......................................................................................... 25
1 4N4792 FLYWHEEL HOUSING COVER GROUP ......................................................... 27
1 BN5941 FLYWHEEL HOUSING GROUP ....................................................................... 26
LOWER STRUCTURE
1 4N771 OIL PAN GROUP .............................................................................................. 27

5R6706 ENGINE ARRANGEMENT-Part 1 of 2

NOTE: WHEN ORDERING PARTS GIVE ENGINE ARRANGEMENT

3
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CATERPILLAR 621B TRACTOR

CONSISTS OF: PAGE

LUBRICATION SYSTEM
1 2N8220 BREATHER GROUP...................................................................................... 33
1 4N2738 FUMES DISPOSAL GROUP.......................................................................... 33
1 4N8121 OIL FILLER GROUP ...................................................................................... 29
1 4N8812 OIL LEVEL GAUGE GROUP ......................................................................... 28
1 4N8733 OIL LINES GROUP ........................................................................................ 31
1 4N733 0 IL PUMP GROUP ........................................................................................ 30
1 4N2481 OIL PUMP MOUNTING FASTENER GROUP ............................................... 29
COOLING SYSTEM
1 4N729 OIL COOLER GROUP ................................................................................... 42
1 4N1641 WATER LINES GROUP ................................................................................. 39
1 9N3288 WATER PUMP GROUP ................................................................................. 37
INTAKE AND EXHAUST SYSTEM
1 4N9010 A FTERCOOOLER GROUP .......................................................................... 52
1 4N2474 AFTERCOOLER WATER LINES GROUP ..................................................... 53
1 7N6294 AIR COMPRESSOR GROUP ........................................................................ 48
1 8N6024 AIR COMPRESSOR LINES GROUP ............................................................. 46
1 BN5416 AIR LINES GROUP ........................................................................................ 45
1 9N22 EXHAUST MANIFOLD GROUP..................................................................... 55
1 8N5444 TURBOCHARGER GROUP........................................................................... 48
1 9N13 TURBOCHARGER OIL LINES GROUP ........................................................ 51
FUEL SYSTEM AND GOVERNOR
1 9N3672 FUEL INJECTION LINES GROUP................................................................. 67
1 4N1981 FUEL FILTER GROUP................................................................................... 71
1 4N2292 FUEL FILTER LINES GROUP ....................................................................... 68
1 9N792 FUEL RATIO CONTROL GROUP ................................................................. 73
1 4N3949 FUEL TRANSFER PUMP GROUP ................................................................ 66
1 6N5202 GOVERNOR AND FUEL PUMP DRIVE GROUP .......................................... 65
1 8N5535 GOVERNOR AND FUEL PUMP GROUP ...................................................... 60
1 4N3064 TACHOMETER DRIVE GROUP .................................................................... 75
NOTE: REFER TO INDEX FOR PAGE LOCATION OF GASKET KITS

5R6706 ENGINE ARRANGENMENT-Part 2 of 2

NOTE: WHEN ORDERING PARTS GIVE ENGINE ARRANGEMENT

4
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BASIC ENGINE

9N664 CYLINDER BLOCK COVER GROUP

5
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CATERPILLAR 621B TRACTOR

4N2257 CYLINDER BLOCK GROUP - Part 1 of 2

6
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BASIC ENGINE

4N2257 CYLINDER BLOCK GROUP - Part 1 of 2

7
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CATERPILLAR 621B TRACTOR

2W1732 CRANKSHAFT GROUP

2W440 Crankshaft parts are shown on Page 9

8
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BASIC ENGINE

2W440 CRANKSHAFT ASSEMBLY

Part of 2W1732 Crankshaft Group shown on Page 8

9
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CATERPILLAR 621B TRACTOR

7N3518 CONNECTING ROD AND PISTON GROUP - 6 Required

10
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BASIC ENGINE

6N4992 CAMSHAFT GROUP

6N4991 Camshaft parts are shown on Page 12

11
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12
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13
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11
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15
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16
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17
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18
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19
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23
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BASIC ENGINE

4N2287 FAN BELT DRIVE GROUP

23
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CATERPILLAR 621B TRACTOR

4N2713 FAN BELT TIGHTENER GROUP

4N2264 FRONT ACCESORY DRIVE GROUP

24
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BASIC ENGINE

6N8344 AUXILIARY DRIVE PULLEY GROUP

7N9651 FLYWHEEL GROUP

25
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CATERPILLAR 621B TRACTOR

8N5941 FLYWHEEL HOUSING GROUP-For Field Replacement order 8N5965

8N5965 FLYWHEEL HOUSING GROUP-Field Installation

26
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BASIC ENGINE

4N4792 FLYWHEEL HOUSING COVER GROUP

4N771 OIL PAN GROUP

27
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CATERPILLAR 621B TRACTOR

4N1812 OIL LEVEL GUIDE GROUP

4N2278 OIL LEVEL GAUGE GROUP

28
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LUBRICATION SYSTEM

4N8121 OIL FILLER GROUP

4N2481 OIL PUMP MOUNTING FASTENER GROUP

29
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CATERPILLAR 621B TRACTOR

4N733 OIL PUMP GROUP

5R6697 OIL SAMPLING GROUP

30
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LUBRICATION SYSTEM

4N8733 OIL LINES GROUP

31
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CATERPILLAR 621B TRACTOR

5R6743 OIL LINES GROUP-Remote Mount Filter

32
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LUBRICATION SYSTEM

2N8220 BREATHER GROUP

4N2738 FUMES DISPOSAL GROUP

33
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CATERPILLAR 6218 TRACTOR

8N6314 RADIATOR GROUP - Rear View

8N6313 Radiator and 296096 Cap parts are shown on Pages 36 and 37

34
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COOLING SYSTEM

8N6314 RADIATOR GROUP--Side View

35
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CATERPILLAR 6218 TRACTOR

8N6313 RADIATOR GROUP

Part of 8N6314 Radiator Group shown on Pages 34 and 35

36
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COOLING SYSTEM

2S6096 PROTECTION COVER GROUP - Radiator Cap

Part of 8N6314 Radiator Group shown on Pages 34 and 35

9N3288 WATER PUMP GROUP

1N2959 Pump parts are shown on Page 38

37
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CATERPILLAP 621R TRACTOR

1N2959 WATER PUMP GROUP

Part of 9N3288 Water Pump Group shown on Page 37

38
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COOLING SYSTEM
5R6740 WATER LINES GROUP
39
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CATERPILLAR 621B TRACTOR
5R6741 WATER LINES GROUP (BRAKE RETARDER)
40
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COOLING SYSTEM

4N2741 SUCTION FAN GROUP

41
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CATERPILLAR 621B TRACTOR

4N729 OIL COOLER GROUP

4N2856 BRAKE OIL COOLER GROUP

42
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COOLING SYSTEM
4N2737 TORQUE CONVERTER OOIL COOLER GROUP
43
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CATERPILLAR 621B TRACTOR

4N2720 AIAR CLEANER GROUP

44
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INTAKE AND EXHAUST SYSTEM

8N5416 AIR LINES GROUP

8D6970 AIR INES GROUP

45
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CATERPILLAR 6218 TRACTOR
8N6024 AIR COMPRESSOR LINES GROUP
46
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INTAKE AND EXHAUST SYSTEM

7N4014 AIR COMPRESSOR GROUP

Part of 7N6294 Air Compressor Group shown on Page 48

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CATERPILLAR 621B TRACTOR

7N6294 AIR COMPRESSOR GROUP

7N4014 Compressor parts are shown on Page 47

8N5444 TURBOCHARGER GROUP

7N9478 Turbocharger Group shown on Page 49

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INTAKE AND EXHAUST SYSTEM

7N9478 TURBOCHARGER GROUP--Field Installation

Part of 8N5444 Turbocharger Group shown on Page48
8N817 Cartridge parts are shown on Page 50

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CATERPILLAR 621B TRACTOR
8N817 TURBOCHARGER CARTRIDGE GROUP
Part of 7N9478 Turbocharger Group shown on Page 49
50
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INTAKE AND EXHAUST SYSTEM

8N817 TURBOCHARGER CARTRIDGE GROUP

Part of 7N9478 Turbocharger Group Shown on Page 49

51
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CATERPILLAR 621B TRACTOR
4N9010 AFTERCOOLER GROUP
52
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INTAKE AND EXHAUST SYSTEM
4N2474 AFTERCOOLER WATER LINES GROUP
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CATERPILLAR 621B TRACTOR

8N5407 AFTERCOOLER COOLANT FILTER GROUP

54
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INTAKE AND EXHAUST SYSTEM55

9N22 EXHAUST MANIFOLD GROUP

4N2740 EXHAUST EXTENSION GROUP

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CATERPILLAR 621B TRACTOR
8N3592 MUFFLER GROUP
56
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INTAKE AND EXHAUST SYSTEM
6G3400 ENGINE COMPARTMENT SHIELD GROUP
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CATERPILLAR 621B TRACTOR

4N2739 DUST EJECTOR GROUP

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FUEL SYSTEM AND GOVERNOR
8D7805 GOVERNOR CONTROL GROUP
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CATERPILLAR 621B TRACTOR
8N5535 GOVERNOR AND FUEL EJECTION PUMP GROUP
8N5534 Governor, 8N5533 Pump and 4N4267 Torque Control parts are shown on pages 61, 62, 63, and 64
60
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FUEL SYSTEM AND GOVERNOR
8N5534 GOVENOR GROUP - Part 1
Part of 8N5535 Governor & Fuel Injection Pump Group shown on Page 60
61
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CATERPILLAR 621B TRACTOR
8N5534 GOVERNOR GROUPpart 2
Part of 8N5535 Governor & Fuel Injection Pump shown on Page 60
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FUEL SYSTEM AND GOVERNOR
8N5533 FUEL INJECTION PUMP GROUP
Part of 8N5535 Governor & Fuel Injection Pump Group shown on Page 60
63
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CATERPILLAR 621B TRACTOR

4N4267 TORQUE CONTROL GROUP

Part of 8N5535 Governor & Fuel Injection Pump Group shown on Page 60

6N7829 FUEL INJECTION PUMP GROUP

Part of 8N5533 Fuel Injection Pump Group shown on Page 63

64
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FUEL SYSTEM AND GOVERNOR
6N5202 GOVERNOR AND FUEL PUMP DRIVE GROUP
65
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CATERPILLAR 621B TRACTOR

4N3949 FUEL IRANSFLR PUMP GRUUP

6N4437 Pump parts are shown below

6N4437 FUEL TRANSFER PUMP GROUP

Part of 4N3949 Fuel Transfer Pump Group shown above

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FUEL SYSTEM AND GOVERNOR
9N3672 FUEL INJECTION LINES GROUP
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CATERPILLAR 621B TRACTOR

4N2292 FUEL FILTER UNES GROUP

68
 TM 5-3805-248-14&P-4
FUEL SYSTEM AND GOVERNOR
8D8140 FUEL LINES GROUP
6N1044 Filter and 4N3287 Pump parts are shown on Page 70
69
 TM 5-3805-248-14&P-4

70CATERPILLAR 621B TRACTOR

6N1044 PRIMARY FUEL FILTER GROUP

Part of 8D8140 Fuel Lines Group shown on Page 69

4N3287 FUEL PRIMING PUMP GROUP

Part of 8D8140 Fuel Lines Group shown on Page 69

70
 TM 5-3805-248-14&P-4

FUEL SYSTEM AND GOVERNOR

4N1981 FUEL FILTER GROUP

71
 TM 5-3805-248-14&P-4
CATERPILLAR 621B TRACTOR
6N651 FUEL RATIO CONTROL GROUP
Pat of 9N792 Fuel Ratio Control Group shown on page 73
72
 TM 5-3805-248-14&P-4

FUEL SYSTEM AND GOVERNOR

9N92 FUEL RATIO CONTROL GROUP

6N651 Control parts are shown on Page 72

73
 TM 5-3805-248-14&P-4
CATERPILLAR 621B TRACTOR
6G6950 FUEL TANK GROUP
74
 TM 5-3805-248-14&P-4

FUEL SYSTEM AND GOVERNOR

5R6810 TACHOMETER DRIVE GROUP

75
 TM 5-3805-248-14&P-4

CATERPILLAR 621B TRACTOR

5R6692 LIGHTING AND WIRING GROUP - Part 1 of 5

76
 TM 5-3805-248-14&P-4

STARTING AND ELECTRICAL SYSTEM

5R6692 LIGHTING AND WIRING GROUP - Part 2 of 5

77
 TM 5-3805-248-14&P-4

CATERPILLAR 621B TRACTOR

5R6692 LIGHTING AND WIRING GROUP - Part 3 of 5

78
 TM 5-3805-248-14&P-4

STARTING AND ELECTRICAL SYSTEM

5R6692 LIGHTING AND WIRING GROUP - Part 4 of 5

79
 TM 5-3805-248-14&P-4

CATERPILLAR 621B TRACTOR

5R6692 LIGHTING AND WIRING GROUP - Part 5 of 5

80
 TM 5-3805-248-14&P-4
STARTING AND ELECTRICAL SYSTEM
5R6760 HARNESS ASSEMBLY
Part of 5R6692 LIGHTING AND WIRING GROUP listed on Page 77
81
 TM 5-3805-248-14&P-4
CATERPILLAR 621B TRACTOR
5R6320 HARNESS ASSEMBLY
Part of 5R6692 LIGHTING AND WIRING GROUP listed on Page 78
82
 TM 5-3805-248-14&P-4
STARTING AND ELECTRICAL

7N718 DISCONNECT SWITCH ASSEMBLY

PART OF 5R6692 Lighting and Wiring Group shown on Page 76
 TM 5-3805-248-14&P-4

CATERPILLAR 621B TRACTOR

5S5147 HEAD LAMP GROUP-24 Volt

Part of 5R6692 Lighting and Wiring Group shown on Page 77

1M1882 FLOOD LAMP GROUP-24 Volt

Part of 5R6692 Lighting and Wiring Group shown on Page 77

84
 TM 5-3805-248-14&P-4

STARTING AND ELECTRICAL SYSTEM

5R683 BLACKOUT LIGHTING GROUP--Part 1 of 2

85
 TM 5-3805-248-14&P-4

5R6+683 BLACKOUT LIGHTING GROUP—Part 2 of 2

86
 TM 5-3805-248-l4&P-4
STARTING AND ELECTRICAL SYSTEM

5R6751 BACK UP WARNING GROUP

87
 TM 5-3805-248-14&P-4
CATERPILLAR 621B TRACTOR

5R6742 ALTERNATOR GROUP--2 Volt, 50 Ampere

88
 TM 5-3805-248-14&P-4

STARTING AND ELECTRICAL SYSTEM

Consists of: Page

1 9G9538 Alternator Group--24 Volt, 50 Ampere 90

- or -
1 3T1888 Alternator Group--Delco-Remy--24 Volt
50 Ampere

559088 ALTERNATOR GROUP--24 Volt, 50 Ampere

Part of 5R6742 Alternator Group listed on Page 88

89
 TM 5-3805-248-14&P-4
CATERPILLAR 621B TRACTOR
9G9538 ALTERNATOR GROU24 volt, 50 Ampere
Part of 5S9088 Alternator Group listed on page 89
90
 TM 5-3805-248-14&P-4
STARTING AND ELECTRICAL SYSTEM
3T1888 ALTERNATOR GROUP--Delco--24 Volt, 50 Ampere--Part 1 of 2
Part of 5S9088 Alternator Group listed on Page 89
91
 TM 5-3805-248-14&P-4
CATERPILLAR 621B TRACTO
3T1888 ALTERNATOR GROUP--Delco--Remy--24 Volt, 50 Ampere--Part 2 of 2
Part of 5S9088 Alternator Group listed on Page 89
92
 TM 5-3805-248-14&P-4
STARTING AND ELECTRICAL SYSTEM
6G4401 ETHER STARTING AID GROUP
93
 TM 5-3803-248-14&P-4
CATERPILLAR 621B TRACTOR

4N1062 ELECTRIC STARTING GROUP-24 Volt

6N1889 Motor parts are listed on Page 9 5

94
 TM 5-3805-248-14&P-4
STARTING AND ELECTRICAL SYSTEM

6N1889 ELECTRIC STARTING MOTOR GROUP-24 Volt

Part of 4N1062 Electric Starting Motor Group-shown on-Page 94

95
 TM 5-3805-248-14&P-4
CATERPILLAR 621B TRACTOR
9G5584 ELECTRIC STARTIN MOTOR GROUP-Prestolite-24Volt-Part
Part of 6N1889 Electric Starting Motor Group shown on Page 95
3T8635 Solenoid parts are shown on Page 101
96
 TM 5-3805-248-14&P-4
STARTING AND ELECTRICAL SYSTEM
9G5584 ELECTRIC MOTOR GROUP-Prestolite-24 Volt-Part 2
Part of 6N1889 Electric Starting Motor Group shown on Page 95
97
 TM 53805-248-14&P-4
CATERPILLAR 621B TRACTOR
3T2649 ELECTRIC STARTING MOTOR GROUP-24 Volt- Delco-Remy-Part 1 of 3
Part of 6N1889 Electric Starting Motor Group listed on Page 95
3T3421 Solenoid parts are shown on Page 101
98
 TM 5-3805-248-14&P-4
STARTING AND ELECTRICAL SYSTEM
3T2649 ELECTRIC STARTING MOTOR GROUP-24 Volt-Delco-Remy - vPart 2 of 3
Part of 6N1889 Electric Starting Motor Group listed on Page 95
99
 TM 5-3805-248-14 &P-4
CATERPILLAR 621B TRACTOR
3T2649 ELECTRIC STARTING MOTOR GROUP - 24 Volt - Delco-Remy - Part 3 of 3
Part of 6N1889 Electric Starting Motor Group listed on Page 95
100
 TM 5-3805-248-14&P-4
STARTING AND ELECTRICAL SYSTEM

3T8635 SOLENOID SWITCH ASSEMBLY-24 Volt

Part of 9G5584 Electric Starting Motor Group shown on Page 96

3T3421 SOLENOID ASSEMBLY

Part of 3T2649 Electric Starting Motor Group shown on Page 98

101
 TM 5-3805-248-14&P-4
CATERPILLAR 621B TRACTOR
7G2780 TRANSMISSION ARRANGEMENT
2P9309 Case & Cover, 2P9311 Planetary, 7G2779 Control, 2P9240 Transfer Gear, 3P1630 Torque Converter,
8S660 Manifold & screen, 3p367 Governor & Drive, 3P203 Scavenge Pump, 3P204 Pressure Pump Filter parts are
shown on Pages 105, 106, 107, 108, 109, 120, 122, 123, 124, 126, 127, and 128
102
 TM 5-3805-248-14&P-4
POWER TRAIN-POWER TRANSMISSION UNIT

2P9309 TRANSMISSION CASE AND COVER GROUP

Part of 7G2780 Transmission Arrangement shown on Page 102

103
 TM 5-3805-248-14&P-4
CATERPILLAR 621B TRACTOR

2P9311 PLANETARY TRANSMISSION GROUP-Part 1 of 4

Part of 7G2780 Transmission Arrangement shown on Page 102

104
 TM 5-3805-248-14,:P-4

POWER TRAIN-POWER TRANSMISSION UNIT

2P9311 PLANETARY TRANSMISSlON GROUP’--Part 2 of 4

Part of 7G2780 Transmission Arrangement shown on Page 102

105
 TM 5-3805-248-140&P-4

CATERPILLAR 621B TRACTOR

2P9311 PLANETARY TRANSMISSION GROUP-Part 3 of 4

Part of 7G2780 Transmission Arrangement shown on Page 102

106
 TM 5-3805-248-14I& P-4

POWER TRAIN-POWER TRANSMISSION UNIT

2P9311 PLANETARY TRANSMISSION GROUP-Part 4 of 4

Part of 7G2780 Transmission Arrangement shown on Page 102

107
 TM 5-3805-248-1 4&P-4
CATERPILLAR 621B TRACTOR

7G2779 TRANSMISSION HYDRAULIC CONTROL GROUP-Automatic Shift-Part 1

Part of 7G2780 Transmission Arrangement shown on Page 102

108
 TM 5-3805-248-14&P-4
POWER TRAIN-POWER TRANSMISSION UNIT

7G2779 TRANSMISSION HYDRAULIC CONTROL GROUP-Automatic Shift-Part 2

Part of 7G2780 Transmission Arrangement shown on Page 102
7G2844 Valve parts are shown on Page 110

109
 TM 5-3805-248-14&P-4
CATERPILLAR 621B TRACTOR
7G2844 AUTOMATIC SHIFTING VALVE GROUP
Part of 7G2779 Transmission Hydraulic Control Group shown on Page 109
7G2774 Shifting &3P2975 Selector Valve parts are shown on Page 111
110
 TM 5-3805-248-14&P-4
POWER TRAIN-POWER TRANSMISSION UNIT

7G2774 AUTOMATIC SHIFTING VALVE GROUP

Part of 7G2844 Automatic Shifting Valve Group shown on Page 110
3P2973 Pressure, 3P6661 Selector and 9S2818 Cut-Off Valves are shown on
Pages 114,115 and 116

3P2975 AUTOMATIC PRESSURE CONTROL AND SELECTOR VALVE GROUP

Part of 7G2844 Automatic Shifting Valve Group shown on Page 110
8P2800 Control & 8P4221 Selector Valve parts are shown on Pages 112 and 113

111
 TM 5-3805-248-14&P-4
CATERPILLAR 621B TRACTOR

8P2800 PRESSURE CONTROL VALVE GROUP

Part of 3P2975 Automatic Pressure Control and Selector Valve Group sown on Page 111

112
 TM 5-3805-248-14&P-4
CATERPILLAR 621B TRACTOR

CATERPILLAR TO VENDOR-PARTS LIST

CAT. VENDOR
P/N FSCM P/N FSCM

2G6087 11083 C4076-020-4 72800

2G7118 11083 2160 71607
2G7181 11083 287298 06853
2G7182 11083 287313 06853
2G7183 11083 286718 06853
2G7184 11083 287053 06853
2G7353 11083 1664400 91024
2G7359 11083 1560002 91024
2G8227 11083 7608-029 30327
2G8265 11083 5123 70082
2G8579 11083 7633 70082
2G8581 11083 5303 70082
2G8584 11083 1634101 91024
2G8587 11083 1556304 91024
2G8588 11083 1604000 91024
2G8589 11083 1603903 91024
2G8590 11083 1603900 91024
2G8591 11083 1603902 91024
2G8592 11083 1562103 91024
2G8593 11083 1563401 91024
2GS594 11083 1715100 91024
2G8595 11083 1715000 91024
2G8651 11083 1586400 91024
2G9267 11083 50485 28882
2G9268 11083 50484 28882
2G9280 11083 3000009U0 28882
2G9485 11083 RS-104 82654
2G9927 11083 103254 06853
2H1855 11083 7784 13445
2H3429 11083 5100-37 79136
2H3788 11083 21-NE-083 72962
2H3789 11083 21-NE-101 30655
2H3790 11083 41-N3-120 72962
2H3922 11083 1232-00 77900
2J564 11083 X53NTU-3212 72962
2J6540 11083 40HL 66295
2J6659 11083 2000-T-280 02397
2J7763 11083 194878 80980
2L6679 11083 1965093 16764
2M1908 11083 217709 06853
2M5282 11083 5949719 73331
2M913 11083 R82228 14726
2M9346 11083 226262 06853
2N3145 11083 1955990 16764
2N8109 11083 1900 66295
2P1222 11083 CAT-1004 16632
2P1269 11083 6489960 70040
2P2541 11083 5937085 73331
2P4339 11083 100056-8 17875
2P5616 11083 1852726 16764
2P8816 11083 P90-2207 88104
2P8817 11083 P90-2206 24041

263
 TM 5-3805-248-14&P-4

CATERPILLAR 621B TRACTOR

CATERPILLAR TO VENDOR-PARTS LIST

CAT. VENDOR
P/N FSCM P/N FSCM

2P8818 11083 MES1005AS 88104

2P8819 11083 P90-2205 24041
2P8822 11083 MES-1064D 88104
2P8824 11083 MES-2116S 88107
2P8825 11083 MEU-2042-8 88104
2P8868 11083 MBD-19CS 88104
2R1532 11083 239949 06853
2R2376 11083 17-10014-12 94222
2R364 11083 5133-62-N0 79136
2R618 11083 278597 06853
2R720 11083 238474 14892
2R790 11083 60-42728-515 06853
2R791 11083 60-40459-28 06853
2R9613 11083 243588 06853
2S4783 11083 910824 73331
2S7316 11083 C-434-Q 80657
303978 11083 202701-4-65 26622
369821 11083 1948519 16764
369823 11083 1914869 16764
388485 11083 1688 8 70270
388822 11083 1202P-2-2 93061
3B8488 11083 16138 70270
3D2239 11083 YS-978-J-670-02 17875
3D4869 11083 237497 06853
3D5851 11083 534714700 20076
3D5852 11083 523560250 20076
3D6395 11083 6GABB-6MB-132.00 70434
3D8352 11083 5008-112 79136
3D8358 11083 N5000-43 79136
3D8747 11083 44472 99688
3D8748 11083 5083 99688
3D8749 11083 8195 99688
3D8935 11083 46A48-4N8-4200 70434
3D9718 11083 90030-11 13445
3D9967 11083 C1983-1 76359
3F379 11083 1968396 16764
3F9194 11083 524900950 20076
3G1212 11083 3CXP3169-001 96259
3G1233 11083 NST20150-250A-FE 11671
3G1239 11083 F104535VQ50A25S125AC21 61038
3G1264 11083 412013 80980
3G1265 11083 416417 80980
3G1280 11083 11089 11671
3G1741 11083 24302 11671
3G1745 11083 13691 11671
3G1820 11083 419674 80980
3G2242 11083 419675 80980
3G2279 11083 26056A 11671
3G2280 11083 26057A 11671
3G2834 11083 421240 80980
3G3731 11083 A-331370 96259

264
 TM 5-3800-248-14&P-4

CATERPILLAR 621B TRACTOR

CATERPILLAR TO VENDOR-PARTS LIST

CAT. VENDOR
P/N FSCM PIN FSCM

3G6659 11083 KSCY0202MBX02M-33.50 11810

3G670 11083 A-331125 96259
3G671 11083 A-342041 96259
3G672 11083 A-342040 96259
3G7242 11083 700505 32461
3G7594 11083 1PDXP2490-004 96259
3G9201 11083 433768 80980
3H2691 11083 1251 24455
3J1578 11083 379585 80980
3J4818 11083 1124-00 78189
3J7719 11083 RR-314 80756
3J9545 11083 X53NU-3212 72962
3K6116 11083 X14324 73421
3K8782 11083 AGC-10RX 71607
3K8782 11083 309615 75915
3K9089 11083 82845-J 60703
3K9879 11083 N5000S-156 89462
3L3380 11083 1965472 16764
3L8187 11083 1206-00 78189
3M6017 11083 8338562 19207
3M6018 11083 7982997 19207
3M6161 11083 PN-10-79500-1 06840
3M6539 11083 60-37005-281 83298
3M3763 11083 1851632 16764
3S4484 11083 400390 08179
3S6049 11083 29712 04618
3S6050 11083 29711 04618
3T181 11083 19303-24-M024WC 01843
3T1815 11083 113 57013
3T1885 11083 1124210003 01843
3T1886 11083 1125045116 01843
3T1887 11083 1127320503 01843
3T1888 11083 1117248 16764
3T2169 11083 PH-22 20308
3T2170 11083 PH-23 20308
3T2649 11083 1114964 16764
3T2662 11083 CDA-15I 14859
3T306 11083 90050-02 13445
3T3106 11083 1847807 16764
3T3370 11083 SAY-1008A 24041
3T3419 11083 1957846 16764
3T3423 11083 1978756 16764
3T3424 11083 1978754 16764
3T3433 11083 1964402 16764
3T4700 11083 1970455 16764
3T4701 11083 1945515 16764
3T4703 11083 1852883 16764
3T4705 11083 1979387 16764
3T4706 11083 1867434 16764
3T4709 11083 1979389 16764
3T4710 11083 1979388 16764

265
 TM 5-3805-248-14&P-4

CATERPILLAR 621B TRACTOR

CATERPILLAR TO VENDOR-PARTS LIST

CAT. VENDOR
P/N FSCM P/N FSCM

3T4711 11083 1867431 16764

3T4712 11083 1979390 16764
3T5046 11083 1979434 16764
3T8635 11083 SAT-4107 24041
3T8637 11083 44675 99688
41683 11083 N5000-162 79136
4B8440 11083 A-5309 04043
4D1133 11083 249146 06853
4D1134 11083 238662 06853
4D1135 11083 238687 06853
4D1138 11083 238686 06853
4D2289 11083 229502 06853
4D2291 11083 239737 06853
4D2292 11083 239615 06853
4D2293 11083 239708 06853
4D2295 11083 239979 06853
4D2298 11083 239627 06853
4D2302 11083 239634 06835
4D2303 11083 239713 06853
4D2305 11083 239668 06853
4D2619 11083 EA28899 80657
4D2634 11083 235829 06853
4D3365 11083 202678 06853
4D4785 11083 24603 74400
4D5238 11083 240775 06853
4D5243 11083 1220-08 77900
4D5245 11083 239906 06853
4D5248 11083 240457 06853
4D5249 11083 240236 06853
4D5253 11083 239913 06853
4D5254 11083 239911 06853
4D5262 11083 239904 06853
4D5897 11083 8GABB-8MB-58.00 70434
4D6885 11083 6GABB-6MB-71.00 70434
4D7066 11083 276519 06853
4D7408 11083 LK721014A 01843
4D7411 11083 17815-29-SP27WC 01843
4D7412 11083 NT721006 01843
4D7417 11083 BK721005 01843
4D7421 11083 WA1793 01843
4J3957 11083 235729 06840
4J1781 11083 270679 80980
4J8265 11083 24NE-066 72962
4J8393 11083 242460 88917
4J8398 11083 242461 88917
4J8500 11083 277786 88917
4J8524 11083 239513 88917
4J8527 11083 239515 88917
4J8528 11083 241837 06840
4J9120 11083 6GABB-6MB-80.00 70434
4K1077 11083 18972 03018
4K4604 11083 715 76361

266
 TM 5-3805-248-14&P-4

CATERPILLAR 621B TRACTOR

CATERPILLAR TO VENDOR-PARTS LIST

CAT. VENDOR
PIN FSCM P/N FSCM

4K4605 11083 728 76361

4K8864 11083 140584 30966
4L1250 11083 22NM-02 72967
4L2729 11083 1911644 16764
4M1815 11083 1945402 16764
4M1827 11083 1948526 16764
4M1828 11083 1948520 16764
4M1829 11083 801077 16764
4M1831 11083 1945356 16764
4M1833 11083 1948536 16764
4M1841 11083 1945468 16764
4M1851 11083 1945476 16764
4M1853 11083 1945484 16764
4M1854 11083 1948529 16764
4M1868 11083 1945500 16764
4M1896 11083 1894635 16764
4M3217 11083 1915717 16764
4M6646 11083 S-400624 08179
4N4668 11083 6060A450 18265
4N4879 11083 44942 72962
4N8434 11083 B-916050 53591
4N848 11083 645775L 79150
4N9401 11083 MFJ-201205S 88104
4N9402 11083 MES-111BS 88104
4N9403 11083 90-2274 88104
4N9404 11083 MES-120 24041
4N9405 11083 MFJ-115 88104
4S5367 11083 82154 06743
4S6667 11083 4GABB-4MB-24.00 70434
457562 11083 4GABB-4MB-76.00 70434
457565 11083 HGABB-4MB-65.00 70434
4T471 11083 14906 11671
5D1026 11083 QS100M-10H 66295
5D1026 11083 10H 08484
5D2856 11083 DEF-02-28 99688
5D3426 11083 233034 06853
5D3635 11083 230250 06853
5D3636 11083 236982 06853
5D5885 11083 8GABB-8MB-2500 70434
5D6993 11083 C0-C-7314-1 04937
5D6996 11083 17011 51511
5D6997 11083 A-25151 04937
5D767 11083 276676 06853
5D768 11083 241559 06853
5D9702 11083 244586 06853
5F5434 11083 G131000 70270
5J8275 11083 17159-1111 73680
5J964 11083 17159-1110 73680
5K484 11083 11856 79550
5K5695 11083 18920 03018
5K5917 11083 4031047 54690
5K5921 11083 4031002 54690

267
 TM 5-3805-248-14&P-4

CATERPILLAR 621B TRACTOR

CATERPILLAR TO VENDOR-PARTS LIST

CAT. VENDOR
P/N FSCM P/N FSCM

5K5922 11083 4031041 54690

5K5923 11083 4031340 54690
5K5940 11083 4031017 54690
5K6077 11083 240480 06853
5K6083 11083 246628 06853
5K9858 11083 6GA88B-(6MB-6MB)-14.00 70434
5L5502 11083 8NT-8F-8F 70434
5L5840 11083 600-0101-3/8 17506
5L7631 11083 1781-2 66295
5L8963 11083 1951048 16764
5M6755 11083 235590 06853
5P1404 11083 8033 X 10 X 6Y 79470
5P1717 11083 UT512 66295
5P3290 11083 64034 28882
5P352 11083 64203 28882
5P4869 11083 HTM800 08484
5P597 11083 HTM-250 08484
5P598 11083 U1412-212 66295
5P599 11083 HTM-600 08484
5P6871 11083 2293 70082
5P6875 11083 2340 70082
5P6879 11083 2296 70082
5P7090 11083 840532 03730
5P7759 11083 20620-10-12 30780
5P8132 11083 5102-131 79136
5P8501 11083 45108-A-10 47842
5P8502 11083 45108-A-11 74842
5P904 11083 27766-0760 73680
5P9897 11083 239643 06853
5P9962 11083 75F12-TT 80657
5R4717 11083 5359-41L 50148
5R5056 11083 P14-50OR 34362
5R6328 11083 72030 74400
5R6746 11083 8724494 19207
5R6749 11083 11668932 19207
5R6754 11083 8724495 19207
5R6756 11083 8724497 19207
5S1522 11083 N5000-112-MD 79136
5S5147 11083 916178 73331
5S55148 11083 916179 73331
5T1085 11083 294218 06853
5T1198 11083 50554 28882
5T1730 11083 102166 06853
5T2180 11083 4040592 54690
512188 11083 KSM4040757 54690
5T2189 11083 KSM4040756 54690
5T2190 11083 KSM4041092 54690
5T3872 11083 82126-436 60703
5T4172 11083 1906601 91024
5T5224 11083 102511 06853
5T756 11083 6511-074 30327
5V5496 11083 KS-CU02-02MBX02MC 09505

268
 TM 5-3805-248-14&P-4

CATERPILLAR 621B TRACTOR

CATERPILLAR TO VENDOR-PARTS LIST

CAT. VENDOR
P/N FSCM P/N FSCM

616746 11083 411-105 16717

6B4661 11083 C3109 X 12 X 6 79470
6B4661 11083 C3109X12X6 79470
6B5072 11083 C3109 X 8 X 4 79470
6B89664 11083 284142 06853
6D3943 11083 282530 06853
6D4045 11083 4GABB-4MB-27.00 70434
6D4246 11083 COV-1313 75272
6D856 11083 284388 06840
6D918 11083 282517 06853
6D9636 11083 236196 06853
6D9718 11083 4GABB-4MB-9.00 70434
6D9766 11083 281824 06853
6D9855 11083 4GABB-4MB-16.00 70434
6D9858 11083 4GABB-4MB-50.00 70434
6F3930 11083 70HT 17875
6G150 11083 01087-1 76359
6G1567 11083 292647 06853
6G1568 11083 292646 06853
6G1571 11083 245570 06853
6G1572 11083 290575 06853
6G1574 11083 289399 06853
6G1576 11083 282840 06853
6G1587 11083 289398 06853
6G1774 11083 244926 06853
6G2316 11083 1749800 91024
6G2317 11083 1751600 91024
6G2318 11083 1751500 91024
6G2319 11083 1751900 91024
6G2959 11083 95108 28882
6G4330 11083 1555715 91024
6G4340 11083 1555716 91024
6G5553 11083 79221 77915
6G593 11083 KSV4040731 54690
6G5987 11083 44640 99688
6G6395 11083 1586405 91024
6G6396 11083 1829300 91024
6G6397 11083 1693002 91024
6G6398 11083 1860800 91024
6G6399 11083 1782600 91024
6G6401 11083 1563501 91024
6G6402 11083 1829200 91024
6G6403 11083 1829100 91024
6G6404 11083 1561801 91024
6G7490 11083 KSM3675GCS48022 54690
6G7526 11083 90058 28882
6G7607 11083 102200 06853
6G7608 11083 102201 06853
6G8829 11083 5619 70082
6G8831 11083 5620 70082
6H3622 11083 1930611 16764
6H3622 11083 1930611 16764

269
 TM 5-3805-248-14&P-4

CATERPILLAR 621B TRACTOR

CATERPILLAR TO VENDOR-PARTS LIST

CAT. VENDOR
P/N FSCM P/N FSCM

6J1889 11083 R0 001-069 05262

6J1889 11083 17149-1122 07200
6J2391 11083 11146 11071
6J7924 11083 4GABB-4MB-104.00 70434
6K1756 11083 4031076 54690
6K1805 11083 4031063 54690
6K1807 11083 4031252 54690
6K2643 11083 4036104 54690
6K2644 11083 4031181 54690
6K5499 11083 LE721125A-1 01843
6K8179 11083 C0V-0413 75272
6N2985 11083 40698 01943
6N3826 11083 480321 72850
6N4184 11083 WJM17-0108 18265
6N5004 11083 408593 08179
6N7216 11083 W2420-025 08337
6N7672 11083 QA9-1TC 53203
6N7674 11083 QS5-2CT 53203
6N7983 11083 5967871 73331
6N9766 11083 ML-24A1 20308
6T1120 11083 1972716 16764
6T1121 11083 1979384 16764
6T3631 11083 15-966-6 15605
6T3632 11083 16-886 15605
6T3633 11083 29-761 15605
6T3701 11083 90-2563 24041
6V1899 11083 542255 80201
6V2318 11083 429282 61038
6V2686 11083 C0V-0313 75272
6V468 11083 2067-6-85 01276
7D2117 11083 277587 06853
7D4048 11083 246936 06853
7D4049 11083 282531 06853
7D4050 11083 283733 06853
7D5252 11083 VS-977 17875
7D6936 11083 227717 06853
7D7719 11083 282294 06840
7D9949 11083 284352 06840
7F3491 11083 1861791 16764
7F3525 11083 1913080 16764
7F7621 11083 190540-6 16764
7F9223 11083 C4014-20-00 77900
7J4425 11083 4GABB-4MB8-332.00 70434
7J482 11083 6ME-6FX 70434
7J664 11083 6GABB-6MB-95.00 70434
7JB080 11083 370072 80980
7J8814 11083 1064 99017
7K1423 11083 205FTW 70434
7K3469 11083 68-A1-523 76361
7K4201 11083 17-10015-13 94222
7K9680 11083 4040025 46904
7K9682 11083 4031744 54690

270
 TM 5-3805-248-14&P-4

CATERPILLAR 621B TRACTOR

CATERPILLAR TO VENDOR-PARTS LIST

CAT. VENDOR
P/N FSCM P/N FSCM

7K9689 11083 13006 79550

7L2894 11083 1964857 16764
7M1674 11083 P10-0128 18265
7M336 11083 1948537 16764
7M9918 11083 130665 53591
7N1062 11083 20PS91-2 14859
7N129 11083 1892824 16764
7N140 11083 SK10-2275-1JG 30780
7N174 11083 1892960 16764
7N2059 11083 300 450 53203
7N3759 11083 408049-4 08179
7N4014 11083 N-7012-8 08863
7N4160 11083 23070 74400
7N5876 11083 1873 73331
7N718 11083 75900-06 29510
7N7435 11083 XRN-26-GL 08863
7N7436 11083 RN-26-ED 00863
7N7440 11083 102368-D 08863
7N7442 11083 102368-A 08863
7N7443 11083 XRN-26-FS 08863
7N7444 11083 X200917-B 08863
7N7447 11083 N21048-B 08863
7N7448 11083 102368-C 08863
7N7449 11083 600182-A 08863
7N7450 11083 N-12106-C 08863
7N7451 11083 102368 08863
7N7779 11083 031-1267-001 71468
7N7779 11083 031-1267-001 71468
7N7780 11083 030-2196-001 71468
7N8000 11083 8906K3081 15605
7N8204 11083 120-1806-000 71468
7N8205 11083 120-1809-000 71468
7N9478 11083 465426-5001 08179
7N9708 11083 N-295-HS 08863
7N9709 11083 400121-A 08863
7N9737 11083 120-1807-000 71468
7N9738 11083 120-1804-000 71468
7V2253 11083 10884 29944
7V9503 11083 3414 29944
8D297 11083 3502-18-06 78189
8D3214 11083 534701950 20076
8D4004 11083 2258-V-542 02397
8D6899 11083 3831 29944
8D7253 11083 85826 95993
8D8582 11083 6490618 70040
8F1326 11083 WA-79849 01843
8F1434 11083 1210-00 77900
8F230 11083 230906 06853
8F3437 11083 80101 13445
8F9837 11083 239636 06853
8F9838 11083 229496 06853
8H1141 11083 1934478 16764

271
 TM 5-3805-248-14&P-4

CATERPILLAR 621B TRACTOR

CATERPILLAR TO VENDOR-PARTS LIST

CAT. VENDOR
P/N FSCM P/N FSCM

8H5303 11083 2484-26 13445

8K1684 11083 313306546563200 82813
8K6474 11083 283975 06853
8M2773 11083 T-1213-SL 30966
8N5495 11083 P13-8818 18265
8N818 11083 409033-12 08179
8N819 11083 408487-17 08179
8N9394 11083 K5CU0202MBX02MC-21.50 30327
8S1527 11083 P90-816 24041
8S1528 11083 SAT-53 88104
8S1535 11083 MFY-34S 88104
8S1546 11083 MES-2205 88104
8S1553 11083 MES-95 88104
8S2226 11083 NL-21A 24041
8S4680 11083 XA-744APS 88104
8S4684 11083 P90-989 24041
8S6154 11083 246152 06853
8S8023 11083 SAT-1004-E 24041
8S8024 11083 SAT-32 88104
8S8075 11083 P90-809 88104
99258 11083 X18407 02978
9B3523 11083 C3109 X 12 X 4 79470
9B453 11083 1224-00-00 77900
9B7233 11083 1208-00 77900
9D1289 11083 249534 06840
9D1897 11083 7500050R0 28827
9D2632 11083 1316701 91024
9D2868 11083 85-011-403 73445
9D3127 11083 85-5710-01-403 73445
9D4049 11083 D020029-01 04937
9D4339 11083 56-4532-2413 80523
9D4510 11083 SH721202A 01843
9D5844 11083 246C10-PM8-PM839 54690
9D8848 11083 55-A-F-C-RH 27182
9D9152 11083 7500050R04 28882
9D9153 11083 95145 28882
9D9735 11083 1561702 91024
9D9737 11083 1569000 91024
9D9738 11083 1563300 91024
9D9739 11083 FF-310-3 00114
9D9746 11083 1556600 91024
9D9747 11083 8037002 91024
9D9753 11083 1556100 91024
9F5255 11083 212668 88917
9F5644 11083 1220-00 77900
9G2795 11083 90060 13445
9G3672 11083 120-1841-000 71468
9G3678 11083 120-1839-000 71468
9G3695 11083 225-0093-000 08718
9G398 11083 887-0238 18791
9G3992 11083 90061 13445

272
 TM 5-3805-248-I4&P-4

CATERPILLAR 621B TRACTOR

CATERPILLAR TO VENDOR-PARTS LIST

CAT. VENDOR
P/N FSCM P/N FSCM

9G4100 11083 1894636 16764

9G5584 11083 MES-65010 24041
9G5588 11083 MFJ-35 95688
9G5854 11083 PS-1459AS 88104
9G6770 11083 1977264 16769
9G7548 11083 1120200023 01843
9G7549 11083 1120220007 01843
9G7551 11083 1129900009 01843
9G7552 11083 1900910024 01843
9G7553 11083 1120222001 01843
9G7554 11083 1127011075 01843
9G7556 11083 1297011002 01843
9G7557 11083 1123414004 01843
9G7559 11083 1127011076 01843
9G7560 11083 1124035017 01843
9G7562 11083 1125500024 01843
9G7564 11083 1126610061 01843
9G7565 11083 1127011074 01843
9G7565 11083 1127011077 01843
9G7566 11083 1125825021 01843
9G7567 11083 1197011000 01843
9G7568 11083 1125885031 01843
9G8183 11083 3308-233 18791
9G9314 11083 3-520133-2 00779
9G9316 11083 19020-23-M024WC 01843
9G9538 11083 0122469022 01843
9G9882 11083 CDA-10 14859
9H3757 11083 1922457 16764
9J5099 11083 413438 80980
9J7852 11083 4-174-1 96047
9K7021 11083 86238-14NS 60703
9K7022 11083 GA721006 08143
9K7951 11083 8971-H 17875
9L2919 11083 1781-1 66295
9M3914 11083 7SBB12 80657
9M7606 11083 1948522 16764
9M7609 11083 1948521 16764
9M7611 11083 5100-37-MD 79136
9M7657 11083 1948656 16764
9M7958 11083 20H 66295
9M8513 11083 P10-2929 18265
9M8662 11083 221204 06853
9M8911 11083 404470 08179
9M8915 11083 400408 08179
9M8919 11083 403818 08179
9N2035 11083 408495-10 08179
9N2036 11083 408597 08179
9N2041 11083 408906 08179
9N2046 11083 408678-1 08179
9N3367 11083 C3302874-01 33457
9N3666 11083 V405P-6-6 30780
9N943 11083 1876813 16764

273
 TM 5-3805-248-14&P-4

CATERPILLAR 621B TRACTOR

CATERPILLAR TO VENDOR-PARTS LIST

CAT. VENDOR
P/N FSCM /IN FSCM

9S174 11083 CDLM60I 14859

9S2004 11083 1971465 16764
9S2005 11083 1968900 16764
9S2006 11083 1968901 16764
9S2007 11083 1968945 16764
9S2008 11083 1968994 16764
9S2009 11083 1968991 16764
9S2011 11083 9427129 16764
9S2012 11083 1971674 16764
9S2013 11083 1971673 16764
9S2014 11083 1969971 16764
9S2246 11083 1968988 16764
9S2247 11083 1847933 16764
9S2248 11083 1969133 16764
9S2250 11083 1968996 16764
9S2252 11083 1968891 16764
9S2254 11083 1968890 16764
9S2255 11083 1969000 16764
9S2256 11083 1968884 16764
9S2258 11083 1969481 16764
9S2260 11083 1969001 16764
9S2261 11083 1968885 16764
9S2262 11083 1970395 16764
9S2290 11083 1971675 16764
9S2291 11083 1971672 16764
9S2292 11083 1971670 16764
9S2300 11083 1959389 16764
9S2301 11083 1968930 16764
9S2302 11083 1968904 16764
9S2389 11083 1969002 16764
9S2390 11083 1970407 16764
9S2396 11083 1968990 16764
9S2438 11083 1969493 16764
9S2542 11083 1968998 16764
9S8001 11083 2HP5NS 50948
9S8002 11083 4HP5NS 50948
9S8003 11083 5HP5N 50948
9S8004 11083 6HP5N 50948
9S8005 11083 7231 X8Y 93061
9S8006 11083 10HP5N 50948
9S8008 11083 12HP5N 25841
9S8688 11083 90-2225 88104
9S9334 11083 16HP5N 18925
9S9829 11083 1961570 16764
T537 11083 P18485 18265

274
 TM 5-3805-248-14&P-4
POWER TRAIN-POWER TRANSMISSION UNIT 113
8P4221 SELECTOR VALVE GROUP
Part of 3P2975 Automatic Pressure Control & Selector Valve group shown on Page 111
113
 TM 5-3805-248-14&P-4
CATERPILLAR 621B TRACTOR

3P2973 SHIFT PRESSURE VALVE GROUP

Part of 7G2774 Automatic Shifting Valve Group shown on Page 111

114
 TM 5-3805-248-14&P-4
POWER TRAIN-POWER TRANSMISSION UNIT 115
3P6661 AUTOMATIC SELECTOR VALVE GROUP
Part of 7G2774 Automatic Shifting Valve Group shown on Page 111
115
 TM 5-3805-248-14&P-4
CATERPILLAR 621B TRACTOR

9S2818 GOVERNOR CUT-OFF VALVE GROUP

Part of 7G2774 Automatic Shifting Valve Group shown on Page 111

60856 VALVE ASSEMBLY

Part of 8D8110 Transmission Control and 8D8010 Differential Lock Control shown
on Pages 118 and 140

116
 TM 5-3805-248-14&P-4
POWER TRAIN-POWER TRANSMISSION UNIT
8D8110 TRANSMISSION CONTROL GROUP - Part 1 of 3
117
 TM 5-3805-248-14&P-4
CATERPILLAR 621B TRACTOR
8D8110 TRANSMISSION CONTROL GROUP - Part 1 of 3
6D856 Valve parts are shown on Page 116
118
 TM 5-3805-248-14&P-4
POWER TRAIN-POWER TRANSMISSION UNIT
8D8110 TRANSMISSION CONTROL GROUP - Part 3 of 3
119
 TM 5-3805-248-14&P-4
CATERPILLAR 621B TRACTOR

2P9240 TRANSFER GEAR GROUP-Part 1

Part of 7G2780 Transmission Arrangement shown on Page 102

120
 TM 5-3805-248-14&P-4

POWER TRAIN-POWER TRANSMISSION UNIT 121

2P9240 TRANSFER GEAR GROUP-Part 2

Part of 7G2780 Transmission Arrangement shown on Page 102

121
 TM 5-3805-248-14&P-4
CATERPILLAR 621B TRACTOR

3P1630 TORQUE CONVERTER GROUP

Part of 7G2780 Transmission Arrangement shown on Page 102

122
 TM 5-3805-248-14&P-4

POWER TRAIN-POWER TRANSMISSION UNIT

8S660 MANIFOLD AND SCREEN GROUP

Part of 7G2780 Transmission Arrangement shown on Page 102

123
 TM 5-3805-248-14&P-4
CATERPILLAR 621B TRACTOR
3P367 GOVERNOR AND DRIVE GROUP
Part of 7G27880 Transmission Arrangement shown on Page 102
8S6340 Governor parts are shown on Page 125
124
 TM 5-3805-248-14&P-4
POWER TRAIN-POWER TRANSMISSION UNIT 125
8S6340 GOVERNOR GROUP
Part of 3P367 Governor and Drive Group shown on Page 124
125
 TM 5-3805-248-14&P-4

CATERPILLAR 621B TRACTOR

3P204 TRANSMISSION PRESSURE PUMP GROUP

Part of 7G2780 Transmission Arrangement shown on Page 102
126
 TM 5-3805-248-14&P-4

POWER TRAIN-POWER TRANSMISSION UNIT 127

9P6447 TRANSMISSION FILTER GROUP

Part of 7G2780 Transmission Arrangement shown on Page 102

127
 TM 5-3805-248-14&P-4
CATERPILLAR 621B TRACTOR
5R6694 POWER TRAIN OIL LINES GROUP – Part 1 of 2
128
 TM 5-3805-248-14&P-4
POWER TRAIN-POWER TRANSMISSION UNIT
5R6694 POWER TRAIN OI LINES - Part 2 of 2
129
 TM 5-3805-248-14&P-4
CATERPILLAR 621B TRACTOR
5R6677 RETARDER CONTROL GROUP
6D3943 Valve Parts are shown on Page 131
130
 TM 5-3805-248-14&P-4
POWER TRAIN-POWER TRANSMISSION UNIT
6D3943 RETARDER VALVE ASSEMBLY
Part of 5R6677 RETARDER CONTROL GROUP
Shown on Page 130
131
 TM 5-3805-248-14&P-4

CATERPILLAR 621B TRACTOR

806050 GEAR PUMP GROUP

2P9313 Pump parts are shown on Page 133

8D6050 GEAR PUMP GROUP

2p9313 Pump parts are shown on Page 133

132
 TM 5-3805-248-14&P-4

POWER TRAIN-POWER TRANSMISSION UNIT 133

2P9313 GEAR PUMP GROUP-Single Section

Part of 806050 Gear Pump Group shown on Page 132

8D5059 DIFFERENTIAL GROUP

Part of 8D5060 Differential and Bevel Gear Group shown on Page 134

133
 TM 5-3805-248-14&P-4

CATERPILLAR 621B TRACTOR

8D5060 DIFFERENTIAL AND BEVEL GEAR GROUP--Part 1

8D5059 Differential parts are shown on Page 133

134
 TM 5-3805-248-14&P-4

POWER TRAIN-POWER TRANSMISSION UNIT

8D5060 DIFFERENTIAL AND BEVEL GEAR GROUP-Part 2

135
 TM 5-3805-248-14&P-4
CATERPILLAR 621B TRACTOR
8D5060 DIFFERENTIAL AND BEVEL GEAR GROUP - Part 2
136
 TM 5-3805-248-14&P-4
POWER TRAIN-POWER TRANSMISSION UNIT
5R6698 DRIVE SHAFT GROUP – Part 1
137
 TM 5-3805-248-14&P-4
CATERPILLAR 621B TRACTOR
8D8250 FINAL DRIVE AND WHEEL GROUP - 29.5 x 29 Tubeless Tires - Part 1 of 2
138
 TM 5-3805-248-14&P-4

POWER TRAIN-POWER TRANSMISSION UNIT

808250 FINAL DRIVE AND WHEEL GROUP-29.5 x 29 Tubeless Tires- Part 2 of 2

139
 TM 5-3805-248-14&P-4
CATERPILLAR 621B TRACTOR

8D8010 DIFFERENTIAL LOCK CONTROL GROUP

6D856 Valve parts are shown on Page 116

Consists of:

2 2D7453 TIRE
29.5 X 29-28 PR TUBELESS E3 TIRE

FIRESTONE TIRE & RUBBER CO.

SUPER GROUND - E3

GENERAL TIRE & RUBBER CO.

ALL DUTY - E3

GOODYEAR TIRE & RUBBER CO.

SURE GRIP LUG - E3

5R6699 TIRE GROUP

140
 TM 5-3805-248-14&P-4
STEERING AND BRAKING SYSTEM
8D8160 AIR TANK GROUP
141
 TM 5-3805-248-14&P-4
CATERPILLAR 621B TRACTOR
5R6676 BRAKE CONTROL GROUP – Part 1 of 4
142
 TM 5-3805-248-14&P-4
STEERING AND BRAKING SYSTEM
5R6676 BRAKE CONTROL GROUP--Part 2 of 4
6G7490 Actuator parts are shown on page 146
143
 TM 5-3805-248-14&P-4

CATERPILLAR 621B TRACTOR

5R6676 BRAKE CONTROL GROUP--Part 3 of 4

144
 TM 5-3805-248-14&P-4

STEERING AND BRAKING SYSTEM

5R6676 BRAKE CONTROL GROUP--Part 4 of 4

7K2738, 6G1587 and 2R618 Valve parts are shown on Pages 147 and 148

145
 TM 5-3805-248-14&P-4
CATERPILLAR 6218 TRACTOR
6G7490 BRAKE ACTUATOR GROUP
Part of 5R6676 Brake Control Group shown on page 145
146
 TM 5-3805-248-14&P-4

STEERING AND BRAKING SYSTEM

6G1587 CONTROL VALVE GROUP

Part of 5R6676 Brake Control Group shown on Page 145
6G1576 Valve parts are shown below

6G1576 CONTROL VALVE ASSEMBLY

Part of 6G1587 Control Valve Group shown above
147
 TM 5-3805-248-14&P-4

CATERPILLAR 621B TRACTOR

7K2738 VALVE ASSEMBLY-Park and Emergency

Part of 5R6676 Brake Control Group shown on Page 145
2R618 DOUBLE CHECK VALVE ASSEMBLY

Part of 5R6676 Brake Control Group shown on Page 145

148
 TM 5-3805-248-14&P-4

STEERING AND BRAKING SYSTEM

6G7606 SLACK ADJUSTER GROUP--L.H.

6G7609 SLACK ADJUSTER GROUP--R.H.
Part of 6G7645 Service Brake Group shown on Page 150
149
 TM 5-3805-248-14&P-4

CATERPILLAR 621B TRACTOR

6G7645 SERVICE BRAKE GROUP

6G7606 Slack Adjuster parts are shown on Page 149
150
 TM 5-3805-248-14&P-4
STEERING AND BRAKING SYSTEM 151
2G9500 AIR DRYER GROUP
151
 TM 5-3805-248-14&P-4

CATERPILLAR 621B TRACTOR

THIS PAGE INTENTIONALLY LEFT BLANK

152
 TM 5-3805-248-14&P-4

STEERING AND BRAKING SYSTEM

THIS PAGE INTENTIONALLY LEFT BLANK

153
 TM 5-3805-248-14&P-4

CATERPILLAR 621B TRACTOR

Consists of:

1 - 5L5502 - FITTING-TO SUPPLY PORT ON 5T1730 VALVE

1 - 6B5072 - BUSHING-TO TEE HOLE ON FITTING
1 - 5N6213 - PLUG-TO BUSHING
1 - 5P8998 - NIPPLE-TO BUSHING
1 - 4K4604 - COUPLER-TO NIPPLE
1 - 4K4605 - PLUG-TO COUPLER
1 - 7J4425 - HOSE AS.-TO PLUG
1 - 5R4262 - REGULATOR GP-TO HOSE AS.

5R6682 TIRE INFLATION GROUP

154
 TM 5-3805-248-14&P-4
STEERING AND BRAKING SYSTEM
5R6685 STEERING LINES GROUP - Part 1 of 4
155
 TM 5-3805-248-14&P-4
CATERPILLAR 6218 TRACTOR
5R6685 STEERING LINES GROUP - Part 2 of 4
156
 TM 5-3805-248-14&P-4
STEERING AND BRAKING SYSTEM
5R6685 STEERING LINES GROUP - Part 3 of 4
157
 TM 5-3805-248-14&P-4
CATERPILLAR 612B TRACTOR
5R6685 STEERING LINES GROUP - Part 3 of 4
158
 TM 5-3805-248-14&P-4
STEERING AND BRAKE SYSTEM
5R6685 STEERING LINES GROUP - Part 4 of 4
159
 TM 5-3805-248-14&P-4
CATERPILLAR 621B TRACTOR
8J7730 STEERING LINES GROUP
160
 TM 5-3805-248-14&P-4

STEERING AND BRAKING SYSTEM

3G7594 PRESSURE REDUCING VALVE ASSEMBLY

Part of 5R6685 Steering Lines Group shown on Page 159
161
 TM 5-3805-248-14&P-4
CATERPILLAR 621B TRACTOR
1U325 STEERING VALVE GROUP
Part of 5R6685 Steering Lines Group shown on Page 157
1U324 Valve parts are shown on Page 163
162
 TM 5-3805-248-14&P-4
STEERING AND BRAKING SYSTEM
1U324 VALVE GROUP
Part of 1U325 Steering Valve Group shown on Page 162
163
 TM 5-3805-248-14&P-4

CATERPILLAR 621B TRACTOR

8D6901 STEERING GEAR GROUP - Part 1 of 2

164
 TM 5-3805-248-14&P-4
STEERING AND BRAKING SYSTEM
8D6901 STEERING GEAR GROUP - Part 1 of 2
165
 TM 5-3805-248-14&P-4

CATERPILLAR 621B TRACTOR

5R6688 GEAR PUMP GROUP

361233 Pump parts are shown below

361Z33 PUMP GROUP

Part of 5R6688 Gear Pump Group shown above
166
 TM 5-3805-248-14&P-4

STEERING AND BRAKING SYSTEM

5R6687 DOUBLE VANE PUMP GROUP

361239 Vane Pump shown on Page 168
167
 TM 5-3805-248-14&P-4
CATERPILLAR 621B TRACTOR
3G1239 VANE PUMP GROUP - Type 2
Part of 5R6687 Steering Vane Pump Group shown on Page 167
3G2834 and 3G656 Cartridge parts are shown on Pages 169 and 201
168
 TM 5-3805-248-14&P-4

STEERING AND BRAKING SYSTEM

3G2834 CARTRIDGE GROUP-95 L/min (25 gpm)

Part of 3G1239 Vane Pump Group shown on Pages 168
169
 TM 5-3805-248-14&P-4
CATERPILLAR 621B TRACTOR
4T7819 SERVO - RECEIVER STEERING CYLINDER GROUP
Part of 8D6900 Steering Servo-Receiver Mounting and Cylinder Group shown on Page 171
170
 TM 5-3805-248-14&P-4

STEERING AND BRAKING SYSTEM

806900 STEERING SERVO-RECEIVER MOUNTING AND CYLINDER 6RUUP

4T7819 Cylinder parts are shown on Page 170

3G6473 RELIEF VALVE GROUP

Part of 3G6904 Steering Cylinder Group shown on Page 172
171
 TM 5-3805-248-14&P-4
CATERPILLAR 621B TRACTOR
3G6404 STEERING CYLINDER GROUP - (Change 0-2)-38.1 mm (1.5 in.) Bore x 238.76 (9.4 in Stroke
3G6473 Valve parts are shown on Page 171
 TM 5-3805-248-14&P-4
STEERING AND BRAKING SYSTEM

3G5192 STEERING CYLINDER GROUP-(Change 0-1)-127mm (5 in.)

Bore x 1127.8mm (44.40 in.) Stroke-2 Required

173
 TM 5-3805-248-14&P-4

CATERPILLAR 621B TRACTOR

2-7B176-BUSHING 2-2G7757-STEP AS.

1-6G6608-HOSE 4-1D4719-NUT
44-4D6579-STUD 1-2G5966-PLATE AS
1-1H7365-HANDLE 1-0S1577-BOLT
1-3B8153-PIN 42-5D353-BOLT
4-5P0597-CLAMP 1-9S8184-PIN AS
1-3B4617-COTTER 1-5H2168-LATCH
1-1H7366-ROD 1-5T3150-CASE & FRAME AS.
1-1B0676-PIN 1-1L8444-TEE
1-3B4615-COTTER 1-1L8444-TEE
2-2D8153-STUD 1-8D4580-PLATE AS
1-1B9920-SPRING 1-6G2654-COVER AS.
6-9L9132-WASHER 1-6G6554-ELBOW
6-7D2838-STUD 1-5T4232-BOX AS
2-2D9345-STUD 1-8D4640-PLATE AS.
2-8D8829-BEARING 1-2K4821-LOCKNUT
2-4K7463-SEAL 1-4D0307-CAP
18-3D8439-STUD 1-4D0306-GASKET

5R6673 FRAME AND CASE GROUP - Part 1 of 3

174
 TM 5-3805-248-14&P-4
CHASSIS

4-3D0490-STUD 1-6F5188-SEAL
10-2J3118-BOLT 2-6G0078-BREATHER
2-8B6599-PLUG 1-8B2664-BUSHING
2-0L1124-GASKET 1-3P2021-NIPPLE
2-6G6626-RETAINER 2-5M1932-STUD
1-6G6626-RETAINER 1-3G6659-HOSE AS.
2-6G6609-SEAL 1-3B7745-NIPPLE
2-5T3059-LENS 1-8L7971-CROSS
1-6G6613-PLATE 1-5V5476-HOSE AS
1-6G6612-PLATE 1-5T0722-GASKET
47-5M2894-WASHER 1-5P8501-PADLOCK
4-9K6285-BAR 1-5R6726-PLATE AS.
2-8J7596-BEARING 2-3D0490-STUD
8-5K7143-BOLT 1-5R6727-PLATE AS.
13-5P8245-WASHER
4-2G7756-CLAMP
1-4D0309-CAP

5R6673 FRAME AND CASE GROUP - Part 2 of 3

175
 TM 5-3805-248-14&P-4

CATERPILLAR 621B TRACTOR

Consists of :

1-5K9107-BLOT
1-9L9132-WASHER
1-5P8501-PADLOCK
1-5R6725-PLATE AS.
1-5R6724-LID AS.
2-5R6721-PLATE AS
4-352017-SCREW
1-5P8501-PADLOCK

5R6673 FRAME AND CASE GROUP - Part 3 of 3

176
 TM 5-3805-248- 14&P-4

CHASSIS

5R6750 FRONT BUMPER GROUP

177
 TM 5-3805-248-14&P-4
CATERPILLAR 621B TRACTOR
5R6674 OPERATOR COMPARTMENT GROUP - Part 1 of 3
178
 TM 5-3805-248-14&P-4
CHASSIS
5R6674 OPERATOR COMPARTMENT GROUP - Part 2 of 3
179
 TM 5-3805-248-14 &P-4
CATERPILLAR 621B TRACTOR
5R6674 OPERATOR COMPARTMENT GROUP - Part 3 of 3
180
 TM 5-3805-248-14&P-4
CHASSIS
6G7890 HOOD GROUP
181
 TM 5-3805-248-14&P-4
CATERPILLAR 621B TRACTOR
6G6945 FENDER GROUP TRACTOR 2 WHEEL
182
 TM 5-3805-248-14&P-4

CHASSIS

3G8060 HITCH GROUP, NON-CUSHION--Part 1 of 2

183
 TM 3-3805-248-14&P-4

CATERPILLAR 621B TRACTOR

3G8060 HITCH GROUP, NON-CUSHION--Part 2 of 2

184
 TM 3-3805-248-14&P.0
CHASSIS

6G5700 RADIATOR GUARD GROUP

185
 TM 5-3805-248-14&P-4
CATERPILLAR 621B TRACTOR

8D7170 CRANKCASE GUARD GROUP

Consists of :

1 - 5R6648 - BRACE ASSEMBLY

1 - 5R2557 - U-BOLT
2 - 1K6872 - NUT

5R6702 TURN STOP GROUP

186
 TM 5-3805-248-14&P-4
HYDRAULIC SYSTEM
5T6680 CONTROL GROUP, TRAILING UNIT - Part 1 of 6
187
 TM 5-3805-248-4dt&P-4
CATERPILLAR 621B TRACTOR
5T6680 CONTROL GROUP, TRAILING UNIT - Part 2 of 6
188
 TM 5-3805-248-14&P-4

HYDRAULIC SYSTEM

5T6680 CONTROL GROUP, TRAILING UNIT Part 3 of 6

189
 TM 5-3805-248-14&P-4

CATERPILLAR 6218B TRACTOR

5T6680 CONTROL GROUP, TRAILING UNIT - Part 4 of 6

190
 TM 5-3805-248-I4&P-4
HYDRAULIC SYSTEM
5T6680 CONTROL GROUP, TRAILING UNIT - Part 5 of 6
191
 TM 5-3805-248-It4&P-4
CATERPILLAR 621B TRACTOR
5T6680 CONTROL GROUP, TRAILING UNIT - Part 6 of 6
8J5920 and 4J8500 valve parts are shown on Pages 193 and 195
192
 TM 5-3805-248-14&P-4
HYDRAULIC SYSTEM

8J5920 CONTROL VALVE GROUP - Part 1 of 2

Part of 5T6680 Trailing Unit Control Group shown on Page 192
3G1854 Valve parts are shown on Page 195

193
 TM 5-3805-248-14&P-4
CATERPILLAR 621B TRACTOR

8J5920 CONTROL VALVE GROUP- Part 2 of 2

Part of 5T6680 Trailing Unit Control Group shown on Pagel92
8J8655 Valve parts are shown on Page 196

194
 TM 5-3805-248-14&P-4
HYDRAULIC SYSTEM

4J8500 , CONTROL VALVE ASSEMBLY

Part of 5T6680 Trailing Unit Control Group shown on Pagel92

3G1854 VALVE GROUP

Part of 8J5920 Control Valve Group shown on Page 193

195
 TM 5-3805-248-14&P-4

CATERPILLAR 621B TRACTOR

8J8655 AIR CONTROL VALVE GROUP

Part of 8J5920 Control Valve Group shown on Page 194

196
 TM 5-3805-248-14&P-4
HYDRAULIC SYSTEM

3G8152 INTERNAL FILTER GROUP

Part of 2G6580 Hydraulic Tank & Filter Group shown on Pages 198 and 19q
367232 Filter By-Pass parts are shown below

3G7232 FILTER BY-PASS GROUP

Part of 368152 Internal Filter Group shown above

197
 TM 3-3805-248-14&P-4
CATERPILLAR 621B TRACTOR

2G6580 HYDRAULIC TANK AND FILTER GROUP-Part 1 of 2

3G8152 Filter parts are shown on Page 197

198
 TM 5-3805-248-14&P-4
HYDRAULIC SYSTEM

2G6580 HYDRAULIC TANK AND FILTER GROUP - Part 2

2G8227 Valve parts are shown on Page 200

199
 TM 5-38035-248-14&P4
CATERPILLAR 621B TRACTOR

2G8227 BREAKER REUEF VALVE GROUP

Part of 2G6580 Hydraulic Tank and Filter Group shown on Page 199

200
 TM 53905-24314&P-4
HYDRAULIC SYSTEM

3G7656 CARTRIDGE GROUP

Part of 3G1239 Vane Pump Group shown on Page 168

201
 TM 5-3805-248-14&P-4
CATERPILLAR 621B TRACTOR
6G4330 SEAT SUSPENSION GROUP - Part 1 of 2
Part of 8D6903 Seat Group shown on Page 204
202
 TM 5-3805-248-14&P-4
CAB, GAUGES AND ACCESSORIES
6G4330 SEAT SUSPENSION GROUP - Part 2 of 2
Part of 8D6903 Seat Group shown on Page 204
203
 TM 5-3805-248-14&P-4
CATERPILLAR 621B TRACTOR
8D6903 SEAT GROUP
6G4330 & 6G150 Seat Parts are shown on Pages 202 and 203
204
 TM 5-3805-248-14&P-4

CAB, GAUGES AND ACCESSORIES

6G150 SEAT GROUP

Part of 8D6903 Seat Group shown on Page 204

205
 TM 5-3805-248-14&P-4
CATERPILLAR 621B TRACTOR
5R6689 ROLL-OVER PROTECTIVE SYSTEM (ENCLOSED) GROUP - Part 1 of 4
206
 TM 5-3805-248-14&P-4
CAB, GAUGES AND ACCESSORIES
207
 TM 5-3805-248-14&P-4
CATERPILLAR 621B TRACTOR
5R6689 ROLL-OVER PROTECTIVE SYSTEM (ENCLOSED) GROUP - Part 3 of 4
208
 TM 5-3805-248-14&P-4
CAB, GAUGES AND ACCESSORIES

5R6689 ROLL-OVER PROTECTIVE SYSTEM (ENCLOSED) GROUP - Part 4 of 4

9D1897 CAB WINDOW GROUP

Part of 5R6689 Roll-Over Protective System Group shown above

209
 TM 5-3805-248-14&P-4
CATERPILLAR 621B TRACTOR
2G9280 CAB WINDSHIELD GROUP
part of 5R6689 Roll-Over Protective System Group shown on Page 209
210
 TM 5-3805-248-14&P-4

CAB, GAUGES AND ACCESSORIES

5R6736 WINDSHIELD WIPER GROUP

3T181 Wiper parts are shown on Page 212

211
 TM 5-3805-248-14&P-4

CATERPILLAR 621B TRACTOR

3T181 WIPER GROUP--24 Volt

Part of 5R6736 Windshield Wiper Group shown on Page 211
9D4510 Shaft & Link parts are shown below.

9D4510 SHAFT AND PIVOT ASSEMBLY

Part of 3T181 Wiper Group shown above.

212
 TM 5-3805-248-14&P-4
CAB, GAUGES AND ACCESSORIES
5R6686 REAR VIEW MIRROR GROUP
213
 TM 5-3805-248-14&P-4

CATERPILLAR 621B TRACTOR

8D8130 AIR HORN GROUP

9D4049 Horn parts are shown on Page 215

214
 TM 5-3805-248-14&:P-4

CAB, GAUGES AND ACCESSORIES

9D4049 AIR HORN GROUP

Part of 8D8130 Air Horn Group shown on Page 214

5R6678 DEFROSTING FAN GROUP

502856 Fan parts are shown on Page217

215
 TM 5-3805-248-14&P-4
CATERPILLAR 621B TRACTOR
5R6679 GAUGE GROUP
216
 TM 5-3805-248-14&P-4
CAB, GAUGES AND ACCESSORIES
5D2856 DEFROSTING FAN –24 VOLT
part of 5R6678 Defrosting Fan Group shown on Page 215
217
 TM 5-3805-248-14&P-4

CATERPILLAR 621B TRACTOR

7G3482 HEATER GROUP

Part of 7G4770 Heater Group shown on Page 227
7G3481 Pressurizer parts are shown on Page 219

218
 TM 5-3805-248-14&P-4

CAB, GAUGES AND ACCESSORIES

7G3481 PRESSURIZER GROUP

Part of 7G3482 Heater & 3P7756 Return Air Console Group shown on Pages 218 and 223
7G4299 Harness & 7G4497 Case parts are shown on Page 220

219
 TM 5-3805-248-14&P-4

CATERPILLAR 621B TRACTOR

THIS PAGE INTENTIONALLY LEFT BLANK

220
 TM 5-3805-248-14&P-4
CAB, GAUGES AND ACCESSORIES
7G4299 HARNESS ASSEMBLY
Part of 7G3481 Pressurizer Group shown on Page 219
221
 TM 5-3805-248-14&P-4
CATERPILLAR 621B TRACTOR
7G4497 CASE ASSEMBLY
Part of 7G3481 Pressurizer Group shown on Page 219
222
 TM 5-3805-248-14&P-4

CAB, GAUGES AND ACCESSORIES

3P7756 RETURN AIR CONSOLE GROUP

Part of 5R6681 Heater & Mounting Groups shown on Page 226

223
 TM 5-3805-248-14&P-4

CATERPILLAR 621B TRACTOR

5R6684 HEATER LINES GROUP

224
 TM 5-3805-248-14&P-4

CAB, GAUGES AND ACCESSORIES

5R6691 HEATER WIRING GROUP

225
 TM 5-3805-248-14&P-4

CATERPILLAR 621B TRACTOR

5R6681 HEATER AND MOUNTING GROUP

3P7756 Console, 7G4770 Heater & 5R4838 Console parts
are shown on Pages 223, 227 and 228

226
 TM 5-3805-248-14&P-4
CAB, GAUGES AND ACCESSORIES
7G4770 HEATER GROUP
part of 5R6681 Heater & Mounting Group shown on Page 226
7G3482 Heater parts are shown on Page 218
227
 TM 5-3805-248-14&P-4
CATERPILLAR 621B TRACTOR
5R4838 CONTROL CONSOLE GROUP
Part of 5R6681 Heater and Mounting Group shown on Page 226
228
 TM 5-3805-248-14&P-4
CAB, GAUGES AND ACCESSORIES
8D8180 SAFETY TREAD GROUP
229
 TM 5-3805-248-14&P-4

CATERPILLAR 621B SCRAPER

8J7698 DRAFT FRAME GROUP

230
 TM 5-3805-248-14&P-4
CATERPILLAR 621B SCRAPER
8J7822 DRAFT FRAME LINES GROUP – Side View – Part 1 of 3
231
 TM 5-3805-248-14&P-4

CATERPILLAR 621B SCRAPER

8J7822 DRAFT FRAME LINES GROUP-Top View-Part 2 of 3

4T366 & 4T367 Valve parts are shown on Page 234

232
 TM 5-3805-248-14&P-4
CATERPILLAR 621B SCRAPER

8J7822 DRAFT FRAME LINES GROUP – Top View – Part 3 of 3

233
 TM 5-3805-248-14&P-4

CATERPILLAR 621B SCRAPER

4T366 CHECK VALVE GROUP

Part of 8J7822 Draft Frame Lines Group shown on Page 233

4T367 CHECK VALVE GROUP

Part of 8J7822 Draft Frame Lines Group shown on Page 233

234
 TM 5-3805-248-14&P-4
CATERPILLAR 621B SCRAPER
4T3752 APRON GROUP
235
 TM 5-3805-248-I4&P-4
CATERPILLAR 621B SCRAPER
5J778 APRON CYLINDER GROUP –184 mm (7.25") Bore x 596 mm (23.50") Stroke
236
 TM 5-3805-248-14&P-4

CATERPILLAR 621B SCRAPER

8J7761 APRON LIFT GROUP

7J3602 EDGE AND BIT GROUP

237
 TM 5-3805-248-14&P-4
CATERPILLAR 621B SCRAPER
5R6709 BOWL GROUP - Part 1 of 2
238
 TM 5-3805-248-14&P-4
CATERPILLAR 621B SCRAPER
5R6709 BOWL GROUP - Part 2 of 2
239
 TM 5-3805-248-14&P-4
CATERPILLAR 621B SCRAPER
5J2449 BOWL CYLINDER GROUP – R.H. –6" Bore x 32" Stroke
5J2450 Bowl Cylinder Group –L.H. --6" Bore x 32" Stroke
240
 TM 5-3805-248-14t&P-4
CATERPILLAR 621B SCRAPER
8J7820 EJECTOR LINES GROUP
241
 TM 5-3805-248-14&P-4

CATERPILLAR 621B SCRAPER

9J2266 EJECTOR GROUP - Part 1 of 2

242
 TM 5-3805-248-14&P-4

CATERPILLAR 621B SCRAPER

9J2266 EJECTOR GROUP - Part 2 of 2

243
 TM 5-3805-248-14&P-4
CATERPILLAR 621B SCRAPER
1U408 EJECTOR CYLINDER GROUP – 165.1 mm (6.5") Bore x 1549 mm (60.98") Stroke
244
 TM 5-3805-248-14&P-4
CATERPILLAR 621B SCRAPER
1U4884 BRAKE CONTROL GROUP – Side View – Rear Half—Part 1 of 3
6G7490 Actuator parts are shown on Page 248
245
 TM 5-3805-248-14t&P-4
CATERPILLAR 621B SCRAPER
1U4884 BRAKE CONTROL GROUP – Side View – Front Half – Part 2 of 3
246
 TM 5-3805-248-14&P-4
CATERPILLAR 621B SCRAPER
1U4884 BRAKE CONTROL GROUP –Top View – Part 3 of 3
247
 TM 5-3805-248-14&P-4
CATERPILLAR 621B SCRAPER
6G7490 BRAKE ACTUATOR GROUP
Part of 1U4884 Brake Control Group shown on Page 245
248
 TM 5-3805-248-14&P-4

CATERPILLAR 621B SCRAPER

6G7640 BRAKE GROUP

6G7607 and 6G7608 Slack Adjuster parts are shown on Page 250

249
 TM 5-3805-248-14&P-4

CATERPILLAR 621B SCRAPER

6G7607 SLACK ADJUSTER GROUP

Part of 6G7640 Brake Group shown on Page 250

6G7608 SLACK ADJUSTER GROUP

Part of 6G7640 Brake Group shown on Page 249

250
 TM 5-3805-248-14&P-4
CATERPILLAR 621B SCRAPER
8D9225 REAR WHEEL GROUP – 29.5 x 29 Tubeless Tires
Note, quantities shown are those required for both R.H. and L.H. sides
251
 TM 5-3805-248-14,&P-4

CATERPILLAR 621B SCRAPER

Consists of:

2 - 2D7453 - TIRE (29.5-29 28PRE2)

5R6699 TIRE GROUP

Consists of:

1 - 6V3696 - PLATE - WARNING

1 - 5M4328 - TAG - CAUTION
ATTACH IN CONSPICUOUS LOCATION
ON UNITS SHIPPED FROM FACTORY
NOT ASSEMBLED TO TRACTOR
1 - 7S7075 - TAG - WARNING
ATTACH NEAR KING PIN BORE
1 - 5M7407 - FILM - SCRAPER PATENT
LOCATE 6 MM BELOW CAPACITY PLATE
6 MM TO LEFT OF LUB FILM
1 - 5P1786 - FILM - LUB
1 - 1H1068 - PLATE - SERIAL NUMBER
1 - 5S1176 - PLATE - CAPACITY
10 - 4B4158 - SCREW - DRIVE
2P9864 - PAINT - 22 LITRE -
22.5 LITRE
2P9063 - FLUID - HYD - 55 LITRE
2P9065 - LUBRICANT - 2 HG
170 GRAM - MISC. FITTINGS
3P1912 - OIL - 8 LITRE -
4 LITRE - RH WHEEL BRG
4 LITRE - LH WHEEL BRG

5R6711 PAINT AND LUBRICANT GROUP

252
 TM 5-3805-248-14&P-4

CATERPILLAR 621B SCRAPER

1 - 7F3400 - BAG CONTAINING LITERATURE AS

SPECIFIED ON THE FACTORY
NOTIFIED LIST OF CURRENT
SERVICE PUBLICATIONS.

5P2506 LITERATURE GROUP

253
 TM 5-3805-248-14&P-4

CATERPILLAR 621B SCRAPER

5R6703 BLACKOUT LIGHTING GROUP - Part 1 of 2

254
 TM 5-3805-248-14&P4
CATERPILLAR 621B SCRAPER
5R6703 BLACKOUT LIGHTING GROUP - Part 2 of 2
255
 TM 5-3805-248-14&P-4
CATERPILLAR 621B SCRAPER
5R6704 SCRAPER WIRING GROUP - Part 1 of 2
256
 TM 5-3805-248-14&P-4
CATERPILLAR 621B SCRAPER
5r6704 SCRAPER WIRING GROUP - Part 2 of 2
257
 TM 5-3805--248-14&P-4
258
 TM 5-3805-248-14&P-4
259
 TM 5-3805-248-14&P-4
260
 TM 5-3805-248-14&P-4

CATERPILLAR 621B TRACTOR

CATERPILLAR TO VENDOR-PARTS LIST

CAT. MS &
PIN FSCM GOV. P/N FSCM

0S0509 11083 MS18154-58 96906

0S1571 11083 MS90725-65 96906
0S1585 11083 MS90728-113 96906
0S1580 11083 MS90728-113 96906
0S1590 11083 MS90725-66 96906
0S1616 11083 MS90725-8 96906
0S1617 11083 MS90728-32 96906
1A1135 11083 MS90728-164 96906
1B2578 11083 MS35691-17 96906
1B4201 11083 MS35690-424 96906
1B4331 11083 MS51967-23 96906
1B7182 11083 MS90725-36 96906
1B7182 11083 MS90728-36 96906
1D4719 11083 MS51967-14 96906
1D4720 11083 MS35690-1004 96906
1H3244 11083 MS35333-40 96906
1L3769 11083 MS16626-1062 96906
2B2695 11083 MS590725-33 96906
2L8066 11083 MS25036-112 96906
2L8069 11083 MS25036-114 96906
2L8075 11083 MS25036-153 96906
2L8076 11083 MS25036-108 96906
2L8079 11083 MS25036-110 96906
2R6806 11083 MS51525-86 96906
3B1915 11083 MS90728-63 96906
3B4501 11083 MS35338-42 96906
3B4508 11083 MS35338-48 96906
3B4510 11083 MS35340-50 96906
3F9556 11083 MS35333-41 96906
3J4818 11083 MS35335-37 96906
4B1237 11083 MS535207-263 96906
4B3388 11083 MS90725-35 96906
4B4278 11083 MS27183-14 96906
4F7957 11083 MS90728-7 96906
5R6748 11083 MS51330-1 96906
5R6755 11083 MS17148-3 96906
9F8125 11083 MS35335-32 96906

261
 TM 5-3805-248-14&P-4
CATERPILLAR 621B TRACTOR

CATERPILLAR TO VENDOR-PARTS LIST

CAT. VENDOR
P/N FSCM P/N FSCM

1F9369 11083 127-B 30327

1H3338 11083 1114-00 77900
1H4393 11083 1108-00 78189
1IH8647 11083 206 73330
1J6474 11083 5100-137 79136
1M1882 11083 899111 24617
1M8649 11083 RRT-500 80756
1M9968 11083 1894637 16764
1M9971 11083 1936466 16764
1P1120 11083 400424 08179
1P2298 11083 5622759 70040
1P3551 11083 4660A 53744
1P6450 11083 E6812-0078 18265
1P7115 11083 J7153-4 11623
1P7360 11083 P11-9168 18265
1P7748 11083 P11-9169 18265
1P7831 11083 MFY-1002MS 24041
1P7832 11083 P90-2123 88104
1S3612 11083 240960 06853
1S5440 11083 Q13367 80657
1S9389 11083 446967-79 57733
1U367 11083 6702-010 02288
1U380 11083 923953 80980
1U381 11083 923954 80980
1U3968 11083 432689 61038
1V3655 11083 50957 03018
1V3656 11083 NT721021 01843
1V3657 11083 CP721084 01843
1V3658 11083 NT721017 01843
1V5044 11083 77916 95993
1W4879 11083 469290-3 08179
1W613 11083 RBX00-2276 18265
1W705 11083 05-35-752 03479
1W8415 11083 5225B522 18265
1W9460 11083 110-273 79150
2D1683 11083 20029 04043
202444 11083 523549300 20076
2D2507 11083 650-1 17875
2D2508 11083 650-4 17875
2D2509 11083 650-3 17875
2D2511 11083 VS-978-J-670-03 17875
2D5986 11083 236022 06840
2D6403 11083 238379 06853
2D6417 11083 5008-131 79136
2D8758 11083 101017-E01 79550
2G1034 11083 285849 06853
2G1674 11083 PK500 27182
2G2702 11083 33LOWER ARM(LH) 27182
2G3537 11083 288369 06853
2G4480 11083 500046 28832
2G4674 11083 287370 06853
2G5694 11083 HVA-200-733 04845
 TM 5-3805-248-14&P-4

By Order of the Secretary of the Army.

JOHN A. WICKHAM, JR.

General, United States Army
Official: Chief of Staff

DONALD J. DELANDRO
Brigadier General United States Army
The Adjutant General

Distribution:

To be distributed in accordance with DA Form 12-25 8-R (Quantity required blocks 405, 406, 407} Operator’s,
Organizational, Direct Support and General Support Maintenance Manual Requirements for Scrapers, Earth Moving.

* U. S. GOVERNMENT PRINTING OFFICE: 1996 404-648/52247

26
2
PIN NO. 058160-000