2P6224 CRANKSHAFT SEAL GROUP Serial No. 78P6893-Up. Part of 4N3974, 4N3975, 4N3976, 2P6783, 2P6784, 2P6785, 2P9561, 3P134 and 3P136 Engine Arrangements 950

BASIC ENGINE

CRANKSHAFT GP

0. 2P-6224 SEAL GP-CR
1. 2P-6483 SEAL GP-CR
2. 2P-6225 SEAL GP-CR

PISTON & ROD GP

3. 4N-4028 PISTON & R
4. 9S-8912 PISTON & R

CAMSHAFT GP

5. 2P-6201 CAMSHAFT G

BALANCER GP

6. 5S-6425 BALANCER G

CYLINDER HEAD GP

7. 2P-6274 CYLINDER H
8. 2P-6484 CYLINDER H
9. 4N-7444 CYLINDER H
0. INFORMATION

WHEEL LOADER 950 WHEEL LOADER 31K
3304 VEHICULAR ENGINE 31K01201-01485 (MACHINE) UEG0797S 950 31K (1968)

BASIC ENGINE

CRANKSHAFT GP

2P-6223 SEAL GP-CRANKSHAFT

2P-6224 SEAL GP-CRANKSHAFT

2P-6483 SEAL GP-CRANKSHAFT

2P-6225 SEAL GP-CRANKSHAFT

2P-8598 HUB GP-CRANKSHAFT

#UEG0797S0020

2P-6224: SEAL GP-CRANKSHAFT

SEAL GP-CRANKSHAFT

2P6224 CRANKSHAFT SEAL GROUP
Serial No. 78P6893-Up. Part of 4N3974, 4N3975, 4N3976, 2P6783, 2P6784,
2P6785, 2P9561, 3P134 and 3P136 Engine Arrangements

c228583 UEG0797S

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Parts for your 950 WHEEL LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	1N-3216 C	[1]	SEAL GROUP
			(Includes)
	9S-3111	[1]	SEAL
2.	2P-3858	[1]	SLEEVE
3.	5S-6296	[1]	SEAL
4.	2P-3859	[1]	SLEEVE
	C		INDICATES CHANGE

#UEG0797S0021

2P-6483: SEAL GP-CRANKSHAFT

SEAL GP-CRANKSHAFT

2P6483 CRANKSHAFT SEAL GROUP
Part of 2P6780 Engine Arrangement

c206950 UEG0797S

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Parts for your 950 WHEEL LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name	Comments
1.	1M-2910	[2]	RING
2.	5S-9021	[1]	SEAL

#UEG0797S0022

2P-6225: SEAL GP-CRANKSHAFT

SEAL GP-CRANKSHAFT

2P6225 CRANKSHAFT SEAL GROUP
Part of 4N3803, 4N3806, 2P6778 and 2P6781 Engine Arrangements

c207185 UEG0797S

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Parts for your 950 WHEEL LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name	Comments
1.	6N-4367	[ 1]	SEAL
2.	5S-9021	[ 1]	SEAL

#UEG0797S0023

4N-4028: PISTON & ROD GP

PISTON & ROD GP

4N4028 CONNECTING ROD AND PISTON GROUP--4 Required
Part of 4N3799, 4N3801, 4N3802, 4N3803, 4N3806, 4N3807, 2P6775, 2P6776,
2P6777, 2P6778, 2P6779, 2P6780, 2P6781 and 2P6782 Engine Arrangements

c222700 UEG0797S

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Parts for your 950 WHEEL LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	7N-9804 C	[1]	PIN-PISTON
2.	9H-4015	[2]	RETAINER-PIN
3.	6N-8061 C	[1]	ROD AS-CONNECTION
	7S-9347	[1]	BEARING
4.	1P-9956	[2]	BOLT-CONNECTING ROD
	5S-6348	[2]	NUT-SPECIAL
5.	7M-7821	[1]	BEARING-CONNECTING ROD (STANDARD)
	2S-0502	[1]	BEARING-.254MM US (.010IN)UNDERSIZE
	2S-0503	[1]	BEARING-.508MM US (.020IN)UNDERSIZE
	7M-7826	[1]	BEARING-.762MM US (.030IN)UNDERSIZE
6.	8N-3181 C	[1]	PISTON GP
7.	9S-7788	[1]	RING-PISTON (OIL)
8.	5S-6750	[1]	RING-INTERMEDIATE
9.	7S-8378	[1]	RING-PISTON TOP
	7S-9404	[1]	RING GP-PISTON
			(INCL COMPLETE SET
			OF RINGS FOR ONE
			PISTON)
	C		CHANGE FROM PREVIOUS TYPE

#UEG0797S0024

9S-8912: PISTON & ROD GP

PISTON & ROD GP

9S8912 CONNECTING ROD AND PISTON GROUP--4 Required
Part of 4N3974, 4N3975, 4N3976, 2P6783, 2P6784, 2P6785,
2P9561, 3P134 and 3P136 Engine Arrangements

c222701 UEG0797S

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Parts for your 950 WHEEL LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	7N-9804 C	[1]	PIN
2.	9H-4015	[2]	RETAINER
3.	6N-8061 C	[1]	ROD ASSEM.
	7S-9347	[1]	BEARING
4.	1P-9956	[2]	BOLT
	5S-6348	[2]	NUT
5.	7M-7821	[1]	BEARING (Standard)
	2S-0502	[1]	BEARING (.010" Undersize)
	2S-0503	[1]	BEARING (.020" Undersize)
	7M-7826	[1]	BEARING (.030" Undersize)
6.	8N-3183 C	[1]	PISTON GROUP
7.	9S-7788	[1]	RING (Oil)
8.	5S-6750	[1]	RING (Intermediate)
9.	7S-8378	[1]	RING (Top)
	7S-9404	[1]	RING GROUP
			(Consists of Complete Set of Rings For One Piston)
	C		INDICATES CHANGE

#UEG0797S0025

2P-6201: CAMSHAFT GP-SINGLE

CAMSHAFT GP-SINGLE

2P6201 CAMSHAFT GROUP
Part of all Engine Arrangements

c227965 UEG0797S

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Parts for your 950 WHEEL LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	8N-4111 C	[1]	CAMSHAFT
2.	7S-2204	[1]	WASHER-THRUST
3.	8S-1491	[1]	LOCK
4.	0S-0509	[2]	BOLT
	C		CHANGE FROM PREVIOUS TYPE

#UEG0797S0026

5S-6425: BALANCER GP

BALANCER GP

5S6425 BALANCER GROUP
Part of all Engine Arrangements

c152074 UEG0797S

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Parts for your 950 WHEEL LOADER:

CATERPILLAR SIS

Part No	Qty	Parts name
1N-8354	[ 2]	LOCK
0S-1594	[ 4]	BOLT
4N-7977	[ 1]	SHAFT ASSEM. (R. H. - 20 Teeth)
4N-7978	[ 1]	SHAFT ASSEM. (L. H. - 20 Teeth)
4S-6417	[ 2]	PLATE

#UEG0797S0027

2P-6274: CYLINDER HEAD GP

CYLINDER HEAD GP

2P6274 CYLINDER HEAD ASSEMBLY
Part of 4N3799, 4N3801, 4N3802, 4N3803, 4N3806, 4N3807, 2P6775, 2P6776, 2P6777, 2P6778, 2P6779,
2P6780, 2P6781 and 2P6782 Engine Arrangements. 4N7444 Cylinder Head parts are shown on Page 39

c207186 UEG0797S

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Parts for your 950 WHEEL LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	5S-5912	[ 8]	RETAINER
2.	5S-6449	[ 4]	VALVE (exhaust)
3.	2A-4429	[ 16]	LOCK
4.	7S-7144	[ 8]	SPRING
5.	5S-6795	[ 4]	CHAMBER ASSEM.
	7S-3206	[ 4]	SEAL
	5M-2667	[ 4]	GASKET 2.928 mm(.194 in.) thick
	2S-8959	[ 4]	GASKET 5.664 mm(.223 in.) thick
	2S-8960	[ 4]	GASKET 6.299 mm(.248 in.) thick
6.	5S-6452	[ 4]	VALVE (intake)
7.	4N-7444 Y	[ 1]	HEAD ASSEM.
			(Separate Illustration)
8.	5S-6277	[ 1]	GASKET
			Separate Illustration

#UEG0797S0028

2P-6484: CYLINDER HEAD GP

CYLINDER HEAD GP

2P6484 CYLINDER HEAD GROUP
Part of 4N3974, 4N3975, 2P6783, 2P6784, 2P6785, 2P9561, 3P134 and 3P136 Engine Arrangements

c207276 UEG0797S

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Parts for your 950 WHEEL LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	4N-7444 Y	[1]	HEAD ASSEM.
			(Separate Illustration)
2.	5S-6452 C	[4]	VALVE (Intake)
3.	5S-7232 C	[4]	VALVE (Exhaust)
4.	7S-7144	[8]	SPRING
5.	2A-4429	[16]	LOCK
6.	5S-5874	[8]	ROTO COIL
7.	8S-3970	[4]	CHAMBER ASSEM.
	7S-3206	[4]	SEAL
	5M-2667 C	[4]	GASKET 4.93 mm(.194 in.) thick
	2S-8959 C	[4]	GASKET 5.66 mm(.223 in.) thick
	2S-8960 C	[4]	GASKET 6.3 mm(.248 in.) thick
8.	5S-6277	[1]	GASKET
	C		INDICATES CHANGE
	Y		SEPARATE ILLUSTRATION

#UEG0797S0029

4N-7444: CYLINDER HEAD ASSEMBLY

CYLINDER HEAD ASSEMBLY

4N7444 CYLINDER HEAD ASSEMBLY
Part of 2P6274 Cylinder Head Assembly and 2P6484 Cylinder Head Group shown
on Pages 37 & 38. Note: Non-Turbocharged Engines do not require Exhaust and
Intake Inserts until replacement Cylinder Head Assembly is installed

c202759 UEG0797S

4N7444 CYLINDER HEAD ASSEMBLY Parts scheme

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Parts for your 950 WHEEL LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	1S-3062	[ 12]	DIRECTOR
2.	3B-0623	[ 4]	PLUG
3.	2B-0858	[ 3]	PLUG
4.	3S-8313	[ 4]	PLUG
5.	2P-1262	[ 8]	GUIDE
7.	5S-7221	[ 4]	INSERT (exhaust)
8.	5S-7218	[ 4]	INSERT (intake)

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 :

2P-6224 SEAL GP-CRANKSHAFT

2P-6223 SEAL GP-CRANKSHAFT

CRANKSHAFT BEARING AND THRUST PLATE REPLACEMENT

2P-1686 CRANKSHAFT ASSEMBLY

4N-7692 CRANKSHAFT AS

2P-6218 CRANKSHAFT GP

2P-6483 SEAL GP-CRANKSHAFT

2P-6225 SEAL GP-CRANKSHAFT

4N-4028 PISTON & ROD GP

9S-8912 PISTON & ROD GP

2P-6201 CAMSHAFT GP-SINGLE

5S-6425 BALANCER GP

2P-6274 CYLINDER HEAD GP

2P-6484 CYLINDER HEAD GP

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