Model QRNG 350 Model QRNG 350 Model QRNG 350 Model QRNG 350 Model QRNG 350
Model QRNG 350 Model QRNG 350 Model QRNG 350 Model QRNG 350 Model QRNG 350
Q R N G Series
Model QRNG 350
Parts Manual
Record of Change 104
TABLE OF CONTENTS
Ordering Replacement Parts ................................ 1
Serial Number Identification ................................. 1
Crankshaft Group .................................................. 2
Crankcase Group ................................................... 3
Bearing Carrier Group ........................................ 4-5 Model & Serial Number
Connecting Rod & Piston Groups Identification Tag
low pressure .................................................... 6-7
high pressure .................................................. 8-9 The serial number identification tag is located on the
handhole plate side of the crankcase. Fill in the
Cylinder & Head Groups ............................... 10-11 numbers from compressor in the corresponding spaces
Head Assemblies ............................................ 12-13 provided here, and reference this page when ordering
replacement parts.
Suction Valve Assembly ..................................... 14
Discharge Valve Assembly ................................. 15
Pneumatic Unloader Assembly .......................... 16
CHANGES
Control Group ...................................................... 17
since previous printing dated February 2009:
Recommended Spare Parts ................................ 18
Gasket Set ............................................................ 18 The compressor sheave was changed from a three-
groove design to a 4-groove design.
Quin-Cip Lubricant .............................................. 18
"O" Ring Kit ......................................................... 18
Decals ................................................................... 18 CAUTION !
Follow all safety precautions outlined in the QRNG Series
Crankcase Lubricant Capacity ........................... 18 instruction manual.
ORDERING WARNING !
REPLACEMENT PARTS Do not operate this compressor without a totally enclosed
belt guard or any other required safety equipment.
All replacement parts are to be ordered through an
authorized Quincy gas application distributor. Insist
on genuine Quincy parts only! Failure to do so
may void warranty.
DANGER !
Air used for breathing or food processing must meet OSHA
1910.134 or FDA 21 CFR 178.3570 regulations. Failure to do
Prompt service can be rendered on repair parts orders so may cause severe injury or death.
if the following information is given:
QRNG 350 Quincy Compressor
Item Part
Number Qty. Number Description
1 1 110221-001 crankshaft assembly
1.1 1 6905-1R crankshaft (N.S.S.; order 110221-001)
1.2 1 2788 bearing cone
1.3 1 40775 bearing cone
1.4 1 110234 orifice, 1/8 npt
1.5 2 2755S pipe plug, 1/4 npt
1.6 1 110705-F17 roll pin, 3/16 x 1.38
2 1 110523X sheave assembly
2.1 1 110523 sheave, 19-1/2", 4G, B sect, CCW (N.S.S.; order 110523X)
2.2 2 110983-N22 hex. screw, 1/2-13 unc x 3.50, grade 8 (@ 90 ft.-lbs.)
2.3 2 116124-N02 square nut, 1/2-13 unc
2.4 2 110428N050 flatwasher, 1/2
3 1 1466 taper key
* Quantity as required
@ Indicates torque value in foot pounds (dry threads)
12
Install seal as shown if positive crankcase pressure exists (factory standard installation).
8 Reverse the seal if negative crankcase pressure exists.
10 16
1.1
9
7.1
14
7.2
17
6
5
4
13 3
1.2
Apply pipe sealant
18 to this pin
15
during installation.
16
12
11
1.11
1.12
1.13
1.14
1.15
1.2
1.1 2
1.3
1.4
1.5
1.6 7
8
1.10 5
1.7
6
1.8
9
1.10
11
1.9
10
Item Part
Number Qty. Number Description
* 1 1 112043-002 bearing carrier assembly (N.S.S.; order 112043G002)
1.1 1 110812 bearing carrier
1.2 1 22749-152 "o"ring, 3/32 wide x 3.44 o.d.
1.3 1 22749-112 "o"ring, 3/32 wide x .69 o.d.
1.4 1 160002-001 bearing carrier driveshaft
1.5 1 160075-001 driveshaft key
1.6 1 160003 pump gerotor
1.7 1 6285 retaining ring
1.8 1 110813-001 housing
1.9 6 123777-J12 hex. screw, 1/4-20 unc x 1.00, grade 5 (@ 6 ft.-lbs.)
§ 1.10 3 2719 pipe plug, 1/4 npt, hex socket
1.11 1 5489 adjustment screw
1.12 1 22749-011 "o"ring, 1/16 wide x .44 o.d.
1.13 1 124369-P02 jamnut, 9/16-18 unf
1.14 1 1160 spring
1.15 1 112857 needle valve
2 1 5502-1 bearing carrier gasket
3 8 123478-L12 hex. screw, 3/8-16 unc x 1.00, grade 5 (@ 30 ft.-lbs.)
§ 4 1 110822 oil pressure gauge
* 5 1 6679-1 gasket, oil inlet bracket
6 1 110659 oil pickup tube
7 2 123115-06C lockwasher, 3/8
8 2 123478-L11 hex. screw, 3/8-16 unc x .88, grade 5 (@ 25 ft.-lbs.)
9 1 110825 stud
10 1 121160 pipe plug, 1/8 npt
Maintenance Parts
11 1 110814-001 oil filter (6 pack)
160079-001 Oil Pump Repair Kit
includes "o"rings, brg. carrier driveshaft, key, gerotor pump & retaining ring
112043G002 Replacement Bearing Carrier Assembly
includes bearing carrier assembly & bearing carrier gasket
Maintenance Parts
1 112052-010 piston (.010 oversize)
1 112052-020 piston (.020 oversize)
1 7527A Piston Ring Set
1 5787-010 Piston Ring Set, LP”includes all rings necessary for installing .010 oversize piston
1 5787-020 Piston Ring Set, LP”includes all rings necessary for installing .020 oversize piston
* 1 6656PR connecting rod inserts (1 pair, standard size)
* 1 6656-010PR connecting rod inserts (1 pair, .010 undersize)
112052G001 Piston Assembly (standard)
includes piston, pin, ring set & retaining rings
112052G010 Piston Assembly (.010 oversize)
includes piston, pin ring set & retaining rings
112052G020 Piston Assembly (.020 oversize)
includes piston, pin, ring set & retaining rings
112053G Replacement Connecting Rod Assembly (standard)
includes connecting rod assembly, inserts (pair) & locknuts
112053G010 Replacement Connecting Rod Assembly (.010 undersize)
includes connecting rod assembly, inserts (pair) & locknuts
N.S.S. = Not Sold Separate
@ Indicates torque value (dry threads). Tighten multiple bolts, capscrews & hex nuts in a criss-cross or alternating pattern. Bring
each fastener to the recommended torque specification in even increments.
* One pair required for each connecting rod assembly.
TOP
GROOVE
10
SECOND
GROOVE
10
1.2
1.2
THIRD
7 GROOVE
1.3
BOTTOM
6
GROOVE
1.5
2
1.1 9
4
1.4 2
Maintenance Parts
1 112057-010 piston (.010 oversize)
1 112057-020 piston (.020 oversize)
1 8168A Ring Set, HP (Standard) No Color Code
includes piston rings, piston rails, piston spring & spacer
1 5788-010 Ring Set, HP (.010 Oversize) (L. Blue)
includes all rings necessary for installing .010 oversize piston
1 5788-020 Ring Set, HP (.020 Oversize) (Yellow)
includes all rings necessary for installing .020 oversize piston
* 1 6656PR connecting rod inserts (1 pair, standard size)
* 1 6656-010PR connecting rod inserts (1 pair, .010 undersize)
112057G001 Piston Assembly (standard)
includes piston, piston pin, ring set & retaining rings
112057G010 Piston Assembly (.010 oversize)
includes piston, piston pin, ring set & retaining rings
112057G020 Piston Assembly (.020 oversize)
includes piston, piston pin, ring set & retaining rings
112058G Replacement Connecting Rod Assembly (standard)
includes connecting rod assembly, inserts & locknuts
112058G010 Replacement Connecting Rod Assembly (.010 undersize)
includes connecting rod assembly, inserts & locknuts
3 7749X1G replacement suction valve assy. 1 112033-908 "o"ring, 3-1/2 wide x .82 o.d.
3 7750X1G replacement discharge valve assy. 1 112048 oil seal
1 124972-001 differential pressure gauge 1 22749-011 "o"ring, 1/16 wide x .44 o.d.
1 160079-001 oil pump repair kit 1 22749-112 "o"ring, 3/32 wide x .69 o.d.
1 7503G gasket set 1 22749-042 "o"ring, 1/16 wide x 3.38 o.d.
1 22749-152 "o"ring, 3/32 wide x 3.44 o.d.
CAUTION !
Refer to the QRNG Series Instruction Manual for vital
lubrication information.