CRANKSHAFT (5S6431 N/S) Serial No. 81J3502 to 81J4270 and 81J4274 inclusive and 31K943 to 31K1014 inclusive 950

BASIC ENGINE

CRANKSHAFT GP

1. 5S-6431 CRANKSHAFT
2. 5S-6431 CRANKSHAFT
3. CRANKSHAFT
4. CRANKSHAFT
5. CRANKSHAFT

CYLINDER HEAD GP

6. 5S-8529 CYLINDER H
7. 5S-8529 CYLINDER H

CYLINDER BLOCK GP

8. 5S-3394 CYLINDER B
9. 5S-3394 CYLINDER B
0. INFORMATION

WHEEL LOADER 950 WHEEL LOADER 31K
950 WHEEL LOADER 31K00943-01200 (MACHINE) UEG0877S 950 31K (1968)

BASIC ENGINE

CRANKSHAFT GP

5S-6431 CRANKSHAFT

CRANKSHAFT BEARING REPLACEMENT GROUPS

CRANKSHAFT BEARING REPLACEMENT

#UEG0877S0001

5S-6431: CRANKSHAFT

CRANKSHAFT

CRANKSHAFT (5S6431 N/S)
Serial No. 81J3502 to 81J4270 and 81J4274 inclusive and 31K943 to 31K1014 inclusive

c114220 UEG0877S

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Parts for your 950 WHEEL LOADER:

CATERPILLAR SIS

Part No	Qty	Parts name
3S-9730	[5]	BEARING
2P-0716	[2]	PLATE
9F-2247	[4]	PLUG
		(PART OF CRANKSHAFT ASSEM. 5S5252)
5S-9022	[1]	SEAL
		-OR-
5S-6297	[1]	SEAL ASSEM.
		(WITH SLEEVE FOR WORN FLANGE)
5S-5252	[1]	CRANKSHAFT ASSEM.
6B-5310	[1]	BOLT
5S-9948	[1]	WASHER
5S-9021	[1]	SEAL
4M-9933	[1]	GEAR (40 TEETH)
5H-2671	[1]	KEY
		(PARTS OF CRANKSHAFT ASSEM. 5S5252)
5S-8038	[1]	PULLEY

#UEG0877S0002

5S-6431: CRANKSHAFT

CRANKSHAFT

CRANKSHAFT (5S6431 N/S)
Serial No. 81J4271 to 81J4273 and 81J4275-Up and 31K1015-Up

c139287 UEG0877S

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Parts for your 950 WHEEL LOADER:

CATERPILLAR SIS

Part No	Qty	Parts name
3S-9730	[5]	BEARING
9S-3037 C	[2]	PLATE
9F-2247	[4]	PLUG
		(PART OF CRANKSHAFT ASSEM. 2P1686)
9S-3111 C	[1]	SEAL
2P-3858 C	[1]	SLEEVE
		(PART OF 2P1686 ASSEM.)
2P-1686 C	[1]	CRANKSHAFT ASSEM.
6B-5310	[1]	BOLT
5S-9948	[1]	WASHER
5S-6296 C	[1]	SEAL
4M-9933	[1]	GEAR (40 TEETH)
5H-2671	[1]	KEY
2P-3859 C	[1]	SLEEVE
		(PARTS OF 2P1686 ASSEM.)
5S-8038	[1]	PULLEY
C		INDICATES CHANGE

#UEG0877S0003

CRANKSHAFT BEARING REPLACEMENT GROUPS

CRANKSHAFT BEARING REPLACEMENT GROUPS
Serial No. 81J3502 to 81J4270 and 81J4274
inclusive and 31K943 to 31K1014 inclusive

UEG0877S0003 UEG0877S

None CRANKSHAFT BEARING REPLACEMENT GROUPS Parts scheme

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Parts for your 950 WHEEL LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name	Comments

#UEG0877S0004

CRANKSHAFT BEARING REPLACEMENT GROUPS

CRANKSHAFT BEARING REPLACEMENT GROUPS
Serial No. 81J4271 to 81J4273 and 81J4275-Up and 31K1015-Up

UEG0877S0004 UEG0877S

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Parts for your 950 WHEEL LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name	Comments

#UEG0877S0005

CRANKSHAFT BEARING REPLACEMENT

CRANKSHAFT BEARING REPLACEMENTS

UEG0877S0005 UEG0877S

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Parts for your 950 WHEEL LOADER:

CATERPILLAR SIS

Part No	Qty	Parts name
6N-3822	[5]	BEARING MAIN
		(.020 OVERSIZE AND .010 UNDERSIZE)
6N-3823	[5]	BEARING MAIN
		(.020 OVERSIZE)

#UEG0877S0006

5S-8529: CYLINDER HEAD AND VALVE MECHANISM

CYLINDER HEAD AND VALVE MECHANISM

CYLINDER HEAD AND VALVE MECHANISM (5S8529 N/S)--Side View--Part 1 of 2
See Page 28 for Gasket Kit

c115776 UEG0877S

5S8529 CYLINDER HEAD AND VALVE MECHANISM Parts scheme

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Parts for your 950 WHEEL LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	0S-1617	[11]	BOLT
2.	3B-4505	[11]	LOCKWASHER
3.	8S-3970	[4]	CHAMBER ASSEM.
4.	7S-3206	[4]	SEAL
5.	1B-7709	[4]	BOLT
6.	2S-0736	[18]	WASHER
7.	1D-4595	[14]	BOLT
8.	4B-4910	[3]	SPRING
9.	5S-5921	[1]	SHAFT ASSEM.
	5S-5879	[1]	BRACKET
	5M-4606	[1]	DOWEL
	0T-0200	[2]	PLUG (.5625")
			-OR-
	0L-1026	[2]	PLUG (.50")
			-OR-
	2P-3189	[1]	SHAFT ASSEM.
	5S-5879	[1]	BRACKET
	5M-4606	[1]	DOWEL
	0L-1026	[2]	PLUG
10.	9H-1110	[8]	WASHER
11.	5S-5878	[2]	BRACKET
12.	9H-1112	[2]	SPRING
13.	9M-9886	[2]	WASHER (rear and front)
14.	9H-1113	[2]	RING
15.	5S-7232	[4]	VALVE (Exhaust)
16.	5S-6452	[4]	VALVE (Intake)
17.	7S-7070 R	[1]	HEAD ASSEM.
18.	5S-4598	[8]	BUSHING
19.	5S-7221	[4]	INSERT (Exhaust)
20.	5S-7218	[4]	INSERT (Intake)
21.	1S-3062	[12]	DIRECTOR
22.	3S-8313	[4]	PLUG
23.	3B-0623	[4]	PLUG
24.	3J-5389	[4]	PLUG
25.	5M-2667	[4]	GASKET (.194" Thick)
	2S-8959	[4]	GASKET (.223" Thick)
	2S-8960	[4]	GASKET (.248" Thick)
26.	8S-1499	[1]	BRACKET ASSEM.
	1L-5072	[1]	DOWEL
	R		REMFG PART MAY BE AVAILABLE

#UEG0877S0007

5S-8529: CYLINDER HEAD AND VALVE MECHANISM

CYLINDER HEAD AND VALVE MECHANISM

CYLINDER HEAD AND VALVE MECHANISM (5S8529 N/S)--End View--Part 2 of 2

c128508 UEG0877S

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Parts for your 950 WHEEL LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	7S-7144	[8]	SPRING
2.	2A-4429	[16]	LOCK
3.	5S-5874	[8]	ROTOCOIL
4.	5S-6854	[4]	ARM ASSEM. (Intake)
5.	5S-6855	[4]	ARM ASSEM. (Exhaust)
6.	4F-0443	[8]	BUSHING
			(1 each in 5S6854 & 5S6855 Arm Assem.)
7.	5S-4538	[1]	COVER ASSEM.
8.	8S-0801	[1]	NUT
	8S-0800	[4]	WASHER
9.	8S-0799	[1]	SUPPORT (Breather)
10.	8S-3738	[11]	STRIP
11.	7S-5913	[7]	REINFORCEMENT
			(Parts of 5S4538 Cover Assem.)
12.	5S-5917	[8]	SCREW
13.	1B-4203	[8]	NUT
14.	8S-1606	[1]	GASKET
15.	1A-5183	[5]	BOLT
16.	5B-3850	[5]	WASHER
17.	3J-5389	[1]	PLUG
18.	5S-5918	[8]	ROD
19.	7S-3161	[8]	LIFTER
20.	5S-6277	[1]	GASKET
21.	7S-6719	[7]	STUD (2.70" Long)
22.	8M-1871	[1]	STUD (2.40" Long)

#UEG0877S0008

5S-3394: CYLINDER BLOCK AND COVERS

CYLINDER BLOCK AND COVERS

CYLINDER BLOCK AND COVERS (5S3394 N/S)--Side View--Part 1 of 2
Serial No. 81J3502 to 81J3773 inclusive and 31K943 to 31K967 inclusive
5S6407 Cylinder Block parts are shown on Page 26. Note: 9S8914 Piston and Liner
Group, consisting of: 1--Piston Assembly, 1--Liner and 2--Seal, is available. See Page 28 for Gasket Kits

c135692 UEG0877S

5S3394 CYLINDER BLOCK AND COVERS Parts scheme

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Parts for your 950 WHEEL LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	9S-6557	[4]	LINER
2.	5S-6670	[8]	SEAL
3.	8M-9307	[1]	PLUG
	6F-7062	[1]	GASKET
4.	0L-1351	[19]	BOLT
5.	3B-4506	[58]	LOCKWASHER
6.	8M-3023	[1]	ORIFICE
7.	9H-5921	[1]	GASKET
8.	5S-6407 Y	[1]	BLOCK ASSEM.
			(See Separate Illustration)
9.	9S-2273	[1]	PLATE ASSEM.
	5S-7190	[1]	STUD
			(Part of 9S2273 Plate Assem.)
10.	5S-7134	[1]	GASKET
11.	0S-1594	[6]	BOLT
12.	5M-6214	[1]	PLUG
13.	5S-7135	[1]	GASKET
14.	0L-1143	[9]	BOLT
15.	0S-1588	[18]	BOLT
16.	8S-8234	[1]	PAN ASSEM.
17.	4B-2363	[1]	PLUG
	6F-4868	[1]	GASKET
18.	9S-1799	[1]	COVER
	8S-0877	[1]	GASKET
19.	9H-6067	[1]	SEAL
20.	8S-0499	[1]	TUBE ASSEM.
21.	8S-1963	[1]	GASKET
22.	1A-2029	[6]	BOLT
23.	5S-6045	[1]	GASKET
24.	8S-1959	[1]	PLATE ASSEM.
25.	4F-4879	[1]	BOLT
	0L-0364	[1]	LOCK
26.	7S-0566	[1]	HOUSING (Flywheel)
27.	3B-8998	[2]	FITTING
28.	1F-1344	[2]	NUT
			(1 in each 3B8998 Fitting)
29.	5M-6213	[4]	PLUG
30.	9S-1760	[1]	TUBE
	Y		SEPARATE ILLUSTRATION

#UEG0877S0009

5S-3394: CYLINDER BLOCK AND COVERS

CYLINDER BLOCK AND COVERS

CYLINDER BLOCK AND COVERS (5S3394 N/S)--End View--Part 2 of 2
Serial No. 81J3502 to 81J3773 inclusive and 31K943 to 31K967 inclusive

c128899 UEG0877S

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Parts for your 950 WHEEL LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	0S-1594	[10]	BOLT
2.	9S-3187	[1]	LOCK
3.	9S-3188	[1]	LOCK
4.	7M-0232	[1]	COVER
5.	9H-4891	[1]	GASKET
6.	1B-4203	[6]	NUT
7.	3B-4506	[13]	LOCKWASHER
8.	5S-6385	[1]	COVER ASSEM.
9.	3B-2460	[1]	STUD
10.	8S-6814	[2]	DOWEL
11.	6H-0192	[4]	STUD
			(Parts of 5S6385 Cover Assem.)
12.	1C-2251	[2]	BOLT
13.	5S-8055	[1]	GASKET
14.	7S-1803	[1]	CAP ASSEM.
15.	5S-8115	[1]	GAUGE ASSEM.
16.	9S-1796	[1]	TUBE ASSEM.
17.	7S-0637	[1]	PIPE
	7S-1801	[1]	ANCHOR
18.	4M-4419	[1]	LOCK
19.	1A-2029	[3]	BOLT
20.	7S-1776	[1]	SUPPORT ASSEM.
21.	8S-1326	[1]	FITTING
22.	0S-1595	[4]	BOLT
23.	7S-1234	[1]	BUSHING ASSEM.
24.	5M-9131	[1]	LOCK
25.	0S-1587	[13]	BOLT
26.	5M-9136	[1]	LOCK
27.	5M-9132	[1]	LOCK
28.	7M-7205	[2]	LOCK
29.	3B-4508	[6]	LOCKWASHER

Information:

BASIC ENGINE

CRANKSHAFT GP

Special Instruction

Installing Crankshaft Seals And Wear Sleeves Using The Former 9S8868, 9S8873, 9S8881 And 9S8888 Tools Groups{1160, 1161, 0704}
Installing Crankshaft Seals And Wear Sleeves Using The Former 9S8868, 9S8873, 9S8881 And 9S8888 Tools Groups{1160, 1161, 0704}

Installation Of Crankshaft Seals And Wear Sleeves{1160, 1161}
Installation Of Crankshaft Seals And Wear Sleeves{1160, 1161}

Installation Of Crankshaft Seals And Wear Sleeves{1203}
Installation Of Crankshaft Seals And Wear Sleeves{1203}

Use Of 1P4000 Line Boring Tool Group{0672, 1201, 1203}
Use Of 1P4000 Line Boring Tool Group{0672, 1201, 1203}

Installation Of Service Replacement Crankshaft For A 3304 Or 3306 Engine{1202}
Installation Of Service Replacement Crankshaft For A 3304 Or 3306 Engine{1202}

Crankshaft Seal And Wear Sleeve Installation{1160, 1161}
Crankshaft Seal And Wear Sleeve Installation{1160, 1161}

Installation Of Seal Groups With Hydrodynamic Grooves In The Seal Lip{1160, 1161}
Installation Of Seal Groups With Hydrodynamic Grooves In The Seal Lip{1160, 1161}

Specifications

Crankshaft
3304 VEHICULAR ENGINE

Bearing Surface (Journal) For Main Bearings
3304 VEHICULAR ENGINE

Bearing Surface (Journal) For Connecting Rods
3304 VEHICULAR ENGINE

Main Bearings And Connecting Rod Bearings
3304 VEHICULAR ENGINE

Crankshaft Hub
3304 VEHICULAR ENGINE

Tool Operating Manual

9U-5132 Timing and Fuel System Setting Tool Group{1105, 1162, 1290, 1905}
9U-5132 Timing and Fuel System Setting Tool Group{1105, 1162, 1290, 1905}

420-7630 Main Bearing Cap Lifting Device{0599, 0629, 0632, 0701, 1201, 1203, 1230}
420-7630 Main Bearing Cap Lifting Device{0599, 0629, 0632, 0701, 1201, 1203, 1230}

Reuse And Salvage Guidelines

Inspection and Reconditioning Procedures of Main Bearing Bores in Cylinder Blocks {1201, 1202, 1224, 1224}
Inspection and Reconditioning Procedures of Main Bearing Bores in Cylinder Blocks {1201, 1202, 1224, 1224}

Reuse and Salvage for Crankshafts {0674, 1202}
Reuse and Salvage for Crankshafts {0674, 1202}

Visual Inspection of Main Bearings and Connecting Rod Bearings {1202, 1203, 1225, 1230}
Visual Inspection of Main Bearings and Connecting Rod Bearings {1202, 1203, 1225, 1230}

9U-5132 Timing and Fuel System Setting Tool Group{1105, 1162, 1290, 1905}
9U-5132 Timing and Fuel System Setting Tool Group{1105, 1162, 1290, 1905}

Reuse and Salvage for Engine Dampers {1202, 1205}
Reuse and Salvage for Engine Dampers {1202, 1205}

Disassembly and Assembly

Crankshaft Pulley
3304 VEHICULAR ENGINE FOR 950 WHEEL LOADER

Crankshaft Front Seal And Wear Sleeve
3304 VEHICULAR ENGINE FOR 950 WHEEL LOADER

Crankshaft Main Bearings
3304 VEHICULAR ENGINE FOR 950 WHEEL LOADER

Crankshaft Rear Seal And Wear Sleeve
3304 VEHICULAR ENGINE FOR 950 WHEEL LOADER

Crankshaft
3304 VEHICULAR ENGINE FOR 950 WHEEL LOADER

Service Magazine

Crankshaft Rear Seal And Wear Sleeve Are Now Serviced As A Group Instead Of Separate Parts{1161}
1980/03/24

Engine Storage; Engine Start-Up After Storage{1000}
1982/02/22

Use 6V6035 Hardness Tester On Crankshafts{0651,1202}
1982/02/22

Inspection Marks On Bearings{7551,1230,1226,1203,1219,1227}
1982/05/03

New Crankshaft Assemblies{1202,1204,1206,1207,1212}
1982/11/01

6V6142 And 6V6143 Installers Can Be Used To Install Crankshaft Seals And Wear Sleeves{0622,0626,1160,1161}
1982/11/01

Procedure To Clean Oil Passages In Crankshafts And Cylinder Blocks{0622,0675,1201,1202}
1983/05/16

Reuse Of Engine Bearings{1230}
1983/05/16

Crankshaft Failures{1202,1230}
1983/11/21

Reuse Of Engine Bearings{1230,1219,1203}
1983/11/21

Remanufactured Undersize Crankshafts Are Available{1202}
1983/11/21

Installing New Copper Bonded Bearings Can Extend Engine Life{1230,1203,1219}
1985/04/29

Remanufactured Crankshafts Are Available In Standard And Two Undersize Dimensions (U.S. and Canada){1202,7754}
1985/11/18

Bearing Failures On Engines Due To Lack Of Lubrication{1230,1219,1203,1202}
1986/09/08

Tools To Remove Wear Sleeves From Crankshafts{0621,7558}
1977/04/18

New Seal For Crankshaft{1161}
1977/07/04

Tools To Install Crankshaft Seal And Wear Sleeve{1160,1161,0622}
1977/07/11

Crankshaft Support Groups Are Available To Measure Bent Crankshafts{0653,1202}
1977/11/07

Double Lip Seal With Hydrodynamic Grooves Used At Rear Of Crankshaft {1161,1200}
1987/09/28

Use New Main Bearings In Replacement Cylinder Blocks{1203,1201}
1978/06/12

Change In Procedure To Check Main Bearing Clearance{1203}
1978/08/28

Four Crankshaft Rear Seals Are Available For Use On 3304 And 3306 Engines{1161}
1979/03/26

Check Crankshaft Seals During Installation Of Engine Overhaul Gasket Kits; Add A Wear Sleeve When Needed{7555,7558,1161}
1979/06/04

New Centering Rings For Oversized Main Bearings{0665,1230}
1979/06/04

Improved Engine Design Uses Cylinder Block With Spacer Plate And New Crankshaft Thrust Plates{1000}
1979/07/02

Checking Crankshaft Journal Surface Hardness On Remanufactured Crankshafts{1202}
1991/01/07

New Front Crankshaft Seal Used{1160,1202}
1991/02/18

Use the 171-7212 Wear Sleeve to Repair the Crankshaft Hub {1160}
2011/09/20

A New Type of Main Bearing is Available {1203}
2005/12/26

40 Power Microscope is Available for Inspecting Bearing Journals on Crankshafts {0777, 1202}
2006/01/16

Caterpillar Parts SIS Catalog 950 :

5S-6431 CRANKSHAFT

CRANKSHAFT BEARING REPLACEMENT GROUPS

CRANKSHAFT BEARING REPLACEMENT

5S-8529 CYLINDER HEAD AND VALVE MECHANISM

5S-3394 CYLINDER BLOCK AND COVERS

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Caterpillar 950M, Wheel Loaders, Construction
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