CYLINDER BLOCK AND COVERS--Side View - Part 1 of 2 5H7505 Cylinder Block Assembly parts are shown on Page 26 Note: 4H7073 Piston and Liner Group, 2H5089 Cylinder Liner and Piston Replacement Gasket Group and 2H5079 Valve Grinding Gasket Group are available. Piston and Liner Replacement require the use of 2H5089 and 2H5079 Gasket Groups 977D

BASIC ENGINE

CYLINDER BLOCK GP

0. CYLINDER B
1. CYLINDER B
2. 5H-7505 CYLINDER B

CRANKSHAFT GP

3. CRANKSHAFT
4. CRANKSHAFT

PISTON & ROD GP

5. CONNECTING
6. CONNECTING

CAMSHAFT GP

7. CAMSHAFT

GEAR GP

8. ACCESSORY

FUEL SYSTEM

CONTROL GP-GOVERNOR

9. FUEL PUMP
0. INFORMATION

TRACK LOADER 977D TRACK LOADER 20A
977 TRAXCAVATOR 20A00001-04222 (MACHINE) UE033271 977D 20A (1955)

BASIC ENGINE

CYLINDER BLOCK GP

CYLINDER BLOCK AND COVERS

5H-7505 CYLINDER BLOCK ASSEMBLY

#UE0332710020

CYLINDER BLOCK AND COVERS

CYLINDER BLOCK AND COVERS--Side View - Part 1 of 2
5H7505 Cylinder Block Assembly parts are shown on Page 26
Note: 4H7073 Piston and Liner Group, 2H5089 Cylinder Liner and Piston Replacement Gasket Group and 2H5079 Valve Grinding Gasket Group are
available. Piston and Liner Replacement require the use of 2H5089 and 2H5079 Gasket Groups

c68490 UE033271

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Parts for your 977D TRACK LOADER:

CATERPILLAR SIS

Part No	Qty	Parts name
4F-7206	[6]	GASKET
9F-7776	[1]	GUIDE ASSEM.
0L-0659	[2]	STUD
		(PART OF GUIDE ASSEM 9F7776)
7B-2124	[18]	SEAL
9F-1507	[1]	STUD
		(PART OF HOUSING ASSEM 6H4386)
2A-3791	[1]	SEAL
2B-7410	[1]	PLUG
2H-3950	[1]	COVER
2H-3951	[1]	GASKET
0T-0308	[7]	STUD
3B-0623	[1]	PLUG
0L-2061	[2]	DOWEL
4B-3251	[4]	STUD
1H-8480	[1]	TUBE
		(PART OF HOUSING ASSEM 6H4366)
0S-1614	[2]	BOLT
1A-5702	[1]	LOCK
3B-0824	[1]	POINTER
6H-4386	[1]	HOUSING ASSEM.
0S-1749	[3]	STUD
2A-3798	[2]	DOWEL
5H-5845	[1]	COVER
		(PARTS OF HOUSING ASSEM 6H4386)
1B-4206	[10]	NUT
3B-4510	[2]	LOCKWASHER
2B-3734	[1]	LOCK (4 3/8" LONG)
2A-3710	[1]	LOCK (5 1/2" LONG)
2B-3726	[1]	LOCK (4 7/8" LONG)
5H-8177	[1]	PLUG
1F-7178	[1]	GASKET
4H-9304	[11]	STUD (1 15/16" LONG)
4H-9303	[2]	STUD (2 1/2" LONG)
4H-9305	[6]	STUD (1 9/16" LONG)
0T-0398	[3]	STUD (1 5/16" LONG)
		(PARTS OF HOUSING ASSEM. 6H4386)
1B-4203	[3]	NUT
4F-6486	[6]	LINER
5H-7505 Y	[1]	BLOCK ASSEM.
		(SEE SEPARATE ILLUSTRATION)
0S-1585	[4]	BOLT
3B-4508	[4]	LOCKWASHER
1H-8590	[1]	GASKET
0S-1594	[9]	BOLT
3B-4506	[27]	LOCKWASHER
4B-6697	[8]	BOLT
4F-1395	[3]	GUIDE
6F-8874	[6]	GASKET
7H-1671	[1]	GASKET
2H-6954	[2]	GUIDE
2H-6930	[1]	BRACKET
3H-2750	[3]	BOLT
0S-1591	[3]	BOLT
1A-6862	[3]	STUD (8 3/16" LONG)
0L-0468	[4]	STUD (1 7/16" LONG)
2A-3349	[1]	FERRULE
		(PARTS OF HOUSING ASSEM 4F7063)
4F-7063	[1]	HOUSING ASSEM.
2A-3307	[1]	SEAL
5B-5812	[3]	DOWEL
		(PART OF HOUSING ASSEM 4F7063)
0S-1594	[13]	BOLT
	[9]	LOCK
0S-2414	[1]	LOCK
4F-7333	[1]	SHAFT ASSEM.
		(PART OF HOUSING ASSEM. 4F7063)
2A-3746	[1]	PLUG
		(PART OF SHAFT ASSEM 4F7333)
2A-3349	[1]	FERRULE
2A-3307	[1]	SEAL
4F-7329	[1]	SHAFT ASSEM.
		(PART OF HOUSING ASSEM. 4F7063)
1F-1006	[1]	DOWEL
		(PART OF SHAFT ASSEM. 4F7329)
4F-7082	[1]	GASKET (SMALL)
4F-7068	[1]	GASKET (LARGE)
0L-0638	[1]	LOCK
4F-7065	[1]	GASKET
4F-8965	[30]	BOLT
3B-4507	[30]	LOCKWASHER
Y		SEPARATE ILLUSTRATION

#UE0332710021

CYLINDER BLOCK AND COVERS

CYLINDER BLOCK AND COVERS--Front View-Part 2 of 2

c68491 UE033271

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Parts for your 977D TRACK LOADER:

CATERPILLAR SIS

Part No	Qty	Parts name
0S-1588	[2]	BOLT
3B-4506	[2]	LOCKWASHER
0S-1591	[2]	BOLT
3B-4506	[2]	LOCKWASHER
8B-0163	[1]	DRAIN
1A-3451	[1]	GASKET
0S-1620	[1]	BOLT
6F-7062	[1]	WASHER
0L-0468	[2]	STUD
		(PART OF COVER ASSEM 4F7062)
1B-4203	[2]	NUT
3B-4506	[2]	LOCKWASHER
5F-8727	[1]	PLUNGER ASSEM.
0S-1594	[2]	BOLT
3B-4506	[2]	LOCKWASHER
4F-6936	[1]	BUSHING ASSEM
7B-5560	[1]	TUBE
		(PART OF COVER ASSEM 4F7105)
4F-7105	[1]	COVER ASSEM
4F-7111	[1]	GASKET
1A-2029	[9]	BOLT
3B-4506	[9]	LOCKWASHER
0L-0827	[1]	PLUG
0L-1124	[1]	GASKET
0S-1582	[12]	BOLT
1B-4203	[12]	NUT
3B-4506	[12]	LOCKWASHER
0S-1594	[3]	BOLT
3B-4506	[3]	LOCKWASHER
2B-0174	[1]	PLUG
4F-7062	[1]	COVER ASSEM.
2B-7409	[1]	PLUG
0S-1620	[1]	BOLT
4F-9325	[1]	GASKET
0L-1351	[30]	BOLT
3B-4506	[30]	LOCKWASHER
4F-7069	[2]	COVER
2H-4144	[2]	GASKET
4H-7869	[1]	GASKET
4H-7873	[1]	COVER
1D-4720	[3]	NUT
3B-4510	[3]	LOCKWASHER
0L-1352	[1]	BOLT
3B-4506	[1]	LOCKWASHER
1A-2029	[7]	BOLT
3B-4506	[7]	LOCKWASHER
0S-1594	[8]	BOLT
3B-4506	[8]	LOCKWASHER
7B-5888	[1]	COVER
4B-0623	[1]	GASKET
4F-6525	[1]	PAN
8B-6599	[1]	PLUG
0L-1124	[1]	GASKET

#UE0332710022

5H-7505: CYLINDER BLOCK ASSEMBLY

CYLINDER BLOCK ASSEMBLY

5H7505 CYLINDER BLOCK ASSEMBLY
Part of Cylinder Block and Covers shown on Page 24

c52305 UE033271

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Parts for your 977D TRACK LOADER:

CATERPILLAR SIS

Part No	Qty	Parts name
4F-7160	[7]	STUD
4F-7161	[24]	STUD
0L-2061	[2]	DOWEL
7F-8294	[2]	BUSHING
0L-2061	[1]	DOWEL
1H-5851	[1]	CAP GRP
9F-2220	[2]	SHIM (LARGE)
9F-2221	[6]	SHIM (SMALL)
		(PARTS OF GRP 1H5851)
1H-5849	[4]	CAP GRP
9F-2216	[8]	SHIM (LARGE)
9F-2217	[24]	SHIM (SMALL)
		(1/4 OF EACH IN EACH GRP 1H5849)
4F-7158	[12]	STUD
1H-5850	[1]	CAP GRP
9F-2218	[2]	SHIM (LARGE)
9F-2219	[6]	SHIM (SMALL)
		(PARTS OF GRP 1H5850)
4F-6178	[2]	TUBE
0T-0305	[2]	STUD
7F-8295	[1]	BUSHING
2A-3696	[1]	PLUG
2A-3798	[2]	DOWEL
2B-2414	[1]	PACKING
8B-8143	[8]	STUD
5H-8022	[1]	CAP GRP
9F-2214	[2]	SHIM (LARGE)
9F-2215	[6]	SHIM (SMALL)
		(PARTS OF GRP 5H8022)
2A-3586	[2]	STUD
3B-7614	[2]	CAP SCREW
2A-3594	[14]	NUT
5H-9456	[14]	COTTER PIN
0L-2061	[1]	DOWEL

#UE0332710023

CRANKSHAFT

c40731 UE033271

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Parts for your 977D TRACK LOADER:

CATERPILLAR SIS

Part No	Qty	Parts name
7B-6253	[1]	GEAR (112 T.)
		(PART OF FLYWHEEL ASSEM.)
5H-5844	[1]	THROWER
0S-0509	[4]	CAP SCREW
7F-6990	[2]	LOCK
1H-1545	[4]	BEARING ASSEM.
4H-4928	[1]	FLYWHEEL ASSEM
7F-8975	[6]	CAP SCREW
6B-0657	[3]	LOCK
5B-6458	[6]	LOCK
0S-1588	[12]	CAP SCREW
		(PARTS OF FLYWHEEL ASSEM.)
1H-1547	[1]	BEARING ASSEM
4F-6872	[1]	LOCK
4F-6534	[1]	GEAR (33 T)
3F-5020	[1]	CRANKSHAFT
1B-8744	[1]	KEY
1B-8746	[1]	KEY
1H-1544	[1]	BEARING ASSEM.
1H-1546	[1]	BEARING ASSEM.
1A-5329	[1]	NUT
4F-8031	[1]	PULLEY
5B-8114	[1]	SCREW
2B-4705	[1]	CAP SCREW
0L-1865	[1]	LOCK
4F-6888	[1]	SEAL (STD)
8F-4331	[1]	SEAL (030 "U" SIZE)

#UE0332710024

CRANKSHAFT BEARING REPLACEMENT GROUPS

UE0332710024 UE033271

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Parts for your 977D TRACK LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name	Comments

#UE0332710025

CONNECTING ROD AND PISTON

CONNECTING ROD AND PISTON--6 Groups Required
Serial No. 20A1 to 20A2161 and 20A2164 inclusive
Note: 4H7073 Piston and Liner Group consisting of 1--Piston Assembly. 1--Liner.
3--Seal and 1--Gasket, is available

c49288 UE033271

None CONNECTING ROD AND PISTON Parts scheme

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Parts for your 977D TRACK LOADER:

CATERPILLAR SIS

Part No	Qty	Parts name
4F-7021	[2]	RETAINER
8F-9283	[1]	PIN
6F-4323	[1]	ROD ASSEM.
5B-5450	[3]	PIN
4B-0047	[2]	DOWEL
		(PARTS OF ASSEM. 6F4323)
9F-8580	[1]	BEARING (STD.)
9F-8581	[1]	BEARING (.030 "U" SIZE)
8H-6966	[1]	RING GROUP
		(CONSISTS OF COMPLETE SET OF RINGS FOR TWO PISTONS)
4F-7042	[1]	RING
6F-6395	[2]	RING
8H-1696	[2]	RING
		(PARTS OF ASSEM. 1H1501)
1H-1501	[1]	PISTON ASSEM.
5B-0163	[2]	BOLT
4B-6074	[2]	NUT
6F-3465	[2]	COTTER PIN
9F-1848	[1]	BUSHING
		(PARTS OF ASSEM. 6F4323)

#UE0332710026

CONNECTING ROD AND PISTON

CONNECTING ROD AND PISTON--6 Required
Serial No. 20A2162. 20A2163 and 20A2165-Up
Note: 8H7233 Piston and Liner Group consisting of 1--Piston Assembly.
1--Liner. 3--Seal and 1--Gasket, is available

c64184 UE033271

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Parts for your 977D TRACK LOADER:

CATERPILLAR SIS

Part No	Qty	Parts name
4F-7021	[2]	RETAINER
8F-9283	[1]	PIN
6F-4323	[1]	ROD ASSEM
5B-5450	[2]	PIN
4B-0047	[2]	DOWEL
		(PARTS OF ASSEM. 6F4323)
9F-8580	[1]	BEARING (STD.)
9F-8581	[1]	BEARING (030 "U" SIZE)
9H-1212	[1]	RING GROUP
		(CONSISTS OF COMPLETE SET OF RINGS FOR ONE PISTON)
4F-7042	[1]	RING
6F-6395	[2]	RING
3F-2834	[1]	RING
		(PARTS OF ASSEM 8H2001)
8H-2001	[1]	PISTON ASSEM
5B-0163	[2]	BOLT
4B-6074	[2]	NUT
6F-3465	[2]	COTTER PIN
9F-1848	[1]	BUSHING
		(PARTS OF ASSEM 6F4323)

#UE0332710027

CAMSHAFT

c23080 UE033271

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Parts for your 977D TRACK LOADER:

CATERPILLAR SIS

Part No	Qty	Parts name
5B-3099	[1]	GEAR (46T. & 66T.)
2A-3473	[1]	PLATE
0S-1591	[2]	CAP SCREW
0L-0364	[2]	LOCK
3B-1634	[1]	LOCK
1B-8722	[1]	KEY
5F-6266	[1]	CAMSHAFT
3B-8763	[1]	WASHER
0L-0702	[1]	NUT

#UE0332710028

ACCESSORY SHAFT AND IDLER GEAR

c30193 UE033271

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Parts for your 977D TRACK LOADER:

CATERPILLAR SIS

Part No	Qty	Parts name
4F-8484	[1]	GEAR (46 T.)
1A-9136	[3]	CAP SCREW
1A-2682	[3]	LOCK
2B-9900	[1]	PLATE
1B-8714	[1]	KEY
4F-7264	[1]	BEARING ASSEM.
2F-4547	[1]	DOWEL
		(PART OF BEARING ASSEM)
9B-0314	[1]	SHAFT (8 T & 14 T)
1F-2304	[1]	BUSHING
		(PART OF BEARING ASSEM)
2B-9899	[1]	WASHER
0S-0509	[2]	CAP SCREW (3/4" LONG)
	[1]	CAP SCREW (1 1/8" LONG)
0L-0364	[3]	LOCK
1F-2433	[1]	BUSHING
		(PART OF GEAR ASSEM)
2A-0053	[1]	NUT
2A-0054	[1]	LOCK
5B-3073	[1]	GEAR ASSEM (49 T)