1F3791 TRACK CARRIER ROLLER GROUP--4 Groups Required Serial No. 20A2509 and 20A3042 inclusive Also part of 4H6111 8H2462 and 1M413 Track Roller Frame Arrangements listed on Pages 215 and 216 977D

UNDERCARRIAGE

ROLLER GP

0. 1F-3791 ROLLER GP-
1. 1M-2003 ROLLER GP-

TRACK GP

2. Serial No. 20A1 to 20A2508 inclusive. Note: 6F148 Track Pin and Bushing Group.
consisting of a complete set of Pins and Bushings for one Track is available
Refer also to Pages 218 through 222 for special parts" class=""> 5H-9037 TRACK GROU
3. Serial No. 20A2509 to 20A2877 inclusive
Only separate parts serviced. When complete Group is required order 2M9292
shown on Page 216B" class=""> 4H-4393 TRACK GROU

ROLLER GP

4. 1M-2003 ROLLER GP-

TRACK GP

5. Serial No. 20A2878 to 20A3042 inclusive
Only separate parts serviced. When complete Group is required order 2M9292
shown on Page 216B" class=""> 1M-4575 TRACK GROU
6. Effective with Serial No. 20A3043" class=""> 2M-9295 TRACK GROU

IDLER GP

7. 3H-1820 FRONT IDLE
8. 8H-2464 FRONT IDLE
9. 8H-2464 FRONT IDLE
0. INFORMATION

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

UNDERCARRIAGE

ROLLER GP

8H-0781 TRACK ROLLER GROUP

9B-0572 TRACK CARRIER ROLLER GROUP

1F-3791 ROLLER GP-TRACK CARRIER

1M-2003 ROLLER GP-TRACK CARRIER

1M-7923 TRACK CARRIER ROLLER GROUP

#UE0332710160

1F-3791: ROLLER GP-TRACK CARRIER

ROLLER GP-TRACK CARRIER

1F3791 TRACK CARRIER ROLLER GROUP--4 Groups Required
Serial No. 20A2509 and 20A3042 inclusive
Also part of 4H6111 8H2462 and 1M413 Track Roller Frame Arrangements
listed on Pages 215 and 216

UE0332710160 UE033271

1F3791 ROLLER GP-TRACK CARRIER Parts scheme

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Parts for your 977D TRACK LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name	Comments

#UE0332710161

1M-2003: ROLLER GP-TRACK CARRIER

ROLLER GP-TRACK CARRIER

1M2003 TRACK CARRIER ROLLER GROUP--4 Groups Required
Effective with Serial No. 20A3043
Also part of 1M9324 and 1M2000 Track Roller Frame Arrangement listed on Page 216A

c57632 UE033271

1M2003 ROLLER GP-TRACK CARRIER Parts scheme

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Parts for your 977D TRACK LOADER:

CATERPILLAR SIS

Part No	Qty	Parts name
9H-7687	[1]	SUPPORT ASSEM.
5B-7267	[2]	CORK
8H-5414	[1]	SEAL
1M-4291	[2]	DOWEL
		(PART OF ASSEM 7H4571)
1D-3419	[2]	BOLT
1B-4207	[2]	NUT
3B-4512	[2]	LOCKWASHER
2A-1538	[4]	BOLT
3B-4512	[4]	LOCKWASHER
9H-7686	[1]	ROLLER
7H-4566	[2]	CUP
7H-4573	[2]	CONE
0S-1594	[4]	BOLT
3B-4506	[4]	LOCKWASHER
2H-3928	[1]	SEAL
8H-5412	[1]	RING
8H-6572	[1]	PLUG
7H-2811	[1]	COVER
8H-5411	[1]	NUT
7H-4569	[1]	SHAFT
1M-8747 R	[1]	SEAL GROUP
8H-2262	[2]	SEAL (RUBBER)
		(PART OF GROUP 1M8747)
2H-1190	[2]	DOWEL
		(PART OF ASSEM 9H7687)
5F-3144	[1]	SEAL
7H-4574	[1]	RING
7H-4571	[1]	COLLAR ASSEM
1M-2002	[1]	SUPPORT ASSEM
R		REMFG PART MAY BE AVAILABLE

#UE0332710162

5H-9037: TRACK GROUP

TRACK GROUP

5H9037 TRACK GROUP--18" Triple Grouser Shoe--2 Groups Required
Serial No. 20A1 to 20A2508 inclusive. Note: 6F148 Track Pin and Bushing Group.
consisting of a complete set of Pins and Bushings for one Track is available
Refer also to Pages 218 through 222 for special parts

UE0332710162 UE033271

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Parts for your 977D TRACK LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name	Comments

#UE0332710163

4H-4393: TRACK GROUP

TRACK GROUP

4H4393 TRACK GROUP--18" Flat Shoe--2 Groups Required
Serial No. 20A2509 to 20A2877 inclusive
Only separate parts serviced. When complete Group is required order 2M9292
shown on Page 216B

c53880 UE033271

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Parts for your 977D TRACK LOADER:

CATERPILLAR SIS

Part No	Qty	Parts name
4H-4394	[1]	TRACK LINK ASSEM
2H-0959	[39]	LINK (R.H.)
8H-8031	[1]	LINK ASSEM
		(MASTER R.H.)
6B-5847	[39]	BUSHING
2H-0960	[39]	LINK (L.H.)
6B-5882	[39]	PIN
8H-8032	[1]	LINK ASSEM
		(MASTER L.H.)
6B-5848	[1]	BUSHING
		(MASTER)
8H-4262	[2]	RING
8H-4263	[1]	PIN (MASTER)
8H-4261	[2]	RING
7B-1748	[40]	SHOE
7H-3597	[160]	BOLT
7H-3607	[160]	NUT
		NOTE WHEN COMPLETE REPLACEMENT OF MASTER PIN IS REQUIRED YOU MAY ORDER MASTER PIN & RING GROUP 8H4326 CONSISTING OF:
8H-4263	[1]	PIN (MASTER)
8H-4261	[2]	RING
8H-4262	[2]	RING

#UE0332710164

1M-2003: ROLLER GP-TRACK CARRIER

ROLLER GP-TRACK CARRIER

1M2003 TRACK CARRIER ROLLER GROUP--4 Groups Required--Field Installation
Effective with Serial No. 20A3043
Also part of 1M9324 and 1M2000 Track Carrier Frame Arrangement listed on Page 216A

c932621 UE033271

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Parts for your 977D TRACK LOADER:

CATERPILLAR SIS

Part No	Qty	Parts name
9H-7687	[1]	SUPPORT ASSEM
5B-7267	[2]	CORK
8H-5414	[1]	SEAL
1M-4291	[2]	DOWEL
		(PART OF COLLAR ASSEM 7H4571)
1D-3419	[2]	BOLT
1B-4207	[2]	NUT
3B-4512	[2]	LOCKWASHER
2A-1538	[4]	BOLT
3B-4512	[4]	LOCKWASHER
9H-7686	[1]	ROLLER
7H-4566	[2]	CUP
7H-4573	[2]	CONE
0S-1594	[4]	BOLT
3B-4506	[4]	LOCKWASHER
2H-3928	[1]	SEAL
8H-5412	[1]	RING
5M-1282	[1]	PLUG
5M-1669	[1]	COVER
8H-5411	[1]	NUT
5M-1905	[1]	SHAFT
1M-8747 R	[1]	SEAL GROUP
8H-2262	[2]	SEAL (RUBBER)
		(PART OF SEAL GROUP 1M8747)
2H-1190	[2]	DOWEL
		(PART OF SUPPORT ASSEM. 9H7687)
5F-3144	[1]	SEAL
7H-4574	[1]	RING
7H-4571	[1]	COLLAR ASSEM.
1M-2002	[1]	SUPPORT ASSEM.
R		REMFG PART MAY BE AVAILABLE

#UE0332710165

1M-4575: TRACK GROUP

TRACK GROUP

1M4575 TRACK GROUP--18" Flat Shoe--2 Groups Required
Serial No. 20A2878 to 20A3042 inclusive
Only separate parts serviced. When complete Group is required order 2M9292
shown on Page 216B

c57004 UE033271

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Parts for your 977D TRACK LOADER:

CATERPILLAR SIS

Part No	Qty	Parts name
7B-1748	[40]	SHOE
7H-3597	[160]	BOLT
7H-3607	[160]	NUT
1M-4574	[1]	LINK ASSEM.
2H-0960	[39]	LINK (L.H.)
1M-4511	[39]	BUSHING
8H-8032	[1]	MASTER LINK ASSEM. (L.H.)
6B-5848	[1]	BUSHING (MASTER)
8H-4263	[1]	PIN (MASTER)
2H-0959	[39]	LINK (R.H.)
6B-5882	[39]	PIN
8H-4262	[2]	RING (RUBBER)
8H-4261	[2]	RING (SNAP)
8H-8031	[1]	MASTER LINK ASSEM. (R.H.)
		NOTE: WHEN COMPLETE REPLACEMENT OF MASTER PIN IS REQUIRED YOU MAY ORDER MASTER PIN & RING GROUP 8H4326 WHICH CONSISTS OF
8H-4263	[1]	PIN (MASTER)
8H-4261	[2]	RING (SNAP)
8H-4262	[2]	RING (RUBBER)

#UE0332710166

2M-9295: TRACK GROUP

TRACK GROUP

2M9295 TRACK GROUP--18" Triple Grouser Shoe--2 Groups Required
Effective with Serial No. 20A3043

UE0332710166 UE033271

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Parts for your 977D TRACK LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name	Comments

#UE0332710167

3H-1820: FRONT IDLER GROUP

FRONT IDLER GROUP

3H1820 FRONT IDLER GROUP
Serial No. 20A1 to 20A2508 inclusive
Also part of 1M9388 Track Roller Frame Arrangement listed on Page 216
Note: 2H9482 Relief Valve is available, see Pages 236 and 237. Refer also to Page 216H for special parts

c38702 UE033271

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Parts for your 977D TRACK LOADER:

CATERPILLAR SIS

Part No	Qty	Parts name
3F-4972	[2]	NUT
8F-4880	[2]	PILOT ASSEM.
6F-1523	[2]	SPRING
7B-5491	[2]	SPRING
7B-5489	[2]	PILOT
0S-1566	[4]	CAP SCREW
3B-4510	[4]	LOCKWASHER
8F-6304	[2]	BOLT
8F-6305	[2]	NUT
8F-6306	[2]	PIN
2B-7557	[2]	CORK
7B-5493	[2]	SLEEVE
4B-4043	[8]	CAP SCREW
3B-4510	[8]	LOCKWASHER
7B-9453	[4]	SEAL
1F-9025	[4]	GASKET (RUBBER)
1F-9026	[4]	WASHER (LEATHER)
		(1 OF EACH IN EACH SEAL 7B9453)
3B-8484	[2]	FITTING
4B-4845	[2]	PLUG
1F-6477	[4]	BUSHING
		(1 IN EACH BUSHING ASSEM.)
1F-8873	[4]	BUSHING ASSEM.
9B-2289	[16]	PIN
		(4 IN EACH BUSHING ASSEM.)
2H-6436	[2]	SCREW ASSEM.
3B-8486	[2]	FITTING
2B-7408	[2]	PLUG
0V-0459	[8]	BOLT
1B-4206	[8]	NUT
3B-4510	[8]	LOCKWASHER
1F-9489	[8]	WASHER
2H-6844	[8]	LOCK
7F-2022	[4]	PIN
1B-4205	[4]	NUT
3B-4508	[4]	LOCKWASHER
4B-0900	[8]	CAP SCREW
3B-4508	[8]	LOCKWASHER
4B-1382	[8]	PLATE
4F-5004	[8]	SPRING ASSEM.
1F-8878	[4]	PLATE
0S-1573	[16]	BOLT
1D-4719	[16]	NUT
3B-4508	[16]	LOCKWASHER
1F-9495	[4]	COLLAR
7F-7735	[2]	IDLER
4H-2777	[2]	BEARING (R.H.)
2H-6062	[2]	BEARING (L.H.)
1F-8877	[12]	SHIM
1F-9491	[2]	SHAFT
1F-8875	[4]	PLATE ASSEM.
6B-6022	[8]	PIN
		(2 IN EACH PLATE ASSEM.)
7B-9454	[4]	PLATE
1F-6473	[4]	GASKET
1A-2029	[24]	CAP SCREW
7B-9457	[12]	LOCK

#UE0332710168

8H-2464: FRONT IDLER GROUP

FRONT IDLER GROUP

8H2464 FRONT IDLER GROUP--Part 1 of 2
Serial No. 20A2509 to 20A3042 inclusive. Also part of 8H2462 and 1M413 Track Roller Frame Arrangements listed on Pages 215 and 216
Note: 2H9482 Relief Valve is available, see Pages 236 and 237. Quantities shown are those required for both R.H. and L.H. sides
ADDITIONAL PARTS ARE SHOWN ON PAGE 118B

c63575 UE033271

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Parts for your 977D TRACK LOADER:

CATERPILLAR SIS

Part No	Qty	Parts name
5M-6707	[2]	VALVE
5M-6709	[2]	BALL CHECK ASSEM.
6H-9049	[2]	FITTING
5M-6708	[4]	WASHER
7H-2069	[2]	BOLT
1K-3147	[2]	WASHER
5H-9459	[2]	NUT
1D-4608	[4]	BOLT
1B-4331	[4]	NUT
3B-4512	[4]	LOCKWASHER
5H-9458	[2]	PILOT
7H-2067	[2]	STOP
		(R H OUTER - L H INNER)
7H-2068	[2]	STOP
		(R H INNER - L H OUTER)
3F-3442	[8]	DOWEL
1A-1460	[12]	BOLT
3B-4508	[12]	LOCKWASHER
6F-7901	[4]	BOLT (6.50" LONG)
1B-4207	[4]	NUT
3B-4512	[4]	LOCKWASHER
1F-4166	[4]	WASHER
8H-2465	[2]	ROD ASSEM.
1D-3419	[4]	BOLT (4.25" LONG)
1B-4207	[4]	NUT
3B-4512	[4]	LOCKWASHER
1F-4166	[4]	WASHER
4B-1398	[8]	PLATE
7F-2022	[4]	PIN
1B-4205	[4]	NUT
3B-4508	[4]	LOCKWASHER
4F-5003	[8]	SPRING ASSEM.
5F-6608	[2]	IDLER ASSEM.

#UE0332710169

8H-2464: FRONT IDLER GROUP

FRONT IDLER GROUP

8H2464 FRONT IDLER GROUP--Part 2 of 2
Serial No. 20A2509 to 20A3042 inclusive. Also part of 8H2462 and 1M413 Track Roller Frame Arrangements listed on Pages 215 and 216
Note: 2H9482 Relief Valve is available, see Pages 236 and 237. Quantities shown are those required for both R.H. and L.H. sides
ADDITIONAL PARTS ARE SHOWN ON PAGE 118B

c66492 UE033271

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Parts for your 977D TRACK LOADER:

CATERPILLAR SIS

Part No	Qty	Parts name
5H-9474	[2]	SPRING
8H-5798	[2]	SLEEVE
5H-9475	[2]	SPRING
5H-9460	[2]	BOLT
1F-8290	[4]	PLATE
0S-1585	[8]	BOLT
3B-4508	[8]	LOCKWASHER
1H-5461	[2]	BEARING
		(R H OUTER - L H INNER)
1A-8651	[16]	BOLT
1D-4720	[16]	NUT
3B-4510	[16]	LOCKWASHER
8H-5514	[2]	PLUG
1F-8284	[12]	SHIM
1F-8291	[4]	PLATE
1F-6206	[4]	GASKET
1F-6211	[4]	BUSHING ASSEM.
1F-6208	[1]	BUSHING (INNER)
1F-6207	[1]	BUSHING (OUTER)
9B-2289	[2]	PIN
1F-8279	[2]	COLLAR
		(R H OUTER - L H INNER)
5H-9463	[2]	COVER
0S-1617	[8]	BOLT
3B-4505	[8]	LOCKWASHER
5H-9467	[2]	PACKING
6H-6288	[2]	PISTON
9F-4446	[2]	SEAL
0S-1572	[8]	BOLT
3B-4510	[8]	LOCKWASHER
5M-6705	[1]	CYLINDER (R.H.)
5M-6706	[1]	CYLINDER (L.H.)
5F-0149	[2]	SEAL
6H-6269	[4]	RING
7H-2062	[2]	PILOT ASSEM.
1A-2029	[24]	BOLT
7B-9457	[12]	LOCK
1H-5462	[2]	BEARING
		(R H INNER - L H OUTER)
1F-8292	[2]	SHAFT
4B-4845	[2]	PLUG
1F-8289	[4]	PLATE ASSEM.
4B-0976	[8]	PIN
		(2 IN EACH PLATE ASSEM. 1F8289)
7B-9968	[4]	SEAL
	[4]	GASKET (RUBBER)
1F-9020	[4]	WASHER (LEATHER)
		(1 OF EACH IN EACH SEAL 7B9968)
1F-8280	[2]	COLLAR
		(R H INNER - L H OUTER)