8P7764 TRANSMISSION CONTROL GROUP--Part 1 Serial No. 14X1364-Up 977L TRACK LOADER

OPERATOR STATION

CONTROL GP-TRANSMISSION

0. 8P-7764 CONTROL GP
1. 8P-7764 CONTROL GP

POWER TRAIN

TRANSMISSION GP

2. 7G-4247 TRANSMISSI
3. 7G-4247 TRANSMISSI
4. 7G-4244 PLANETARY
5. 7G-4244 PLANETARY
6. 7G-4244 PLANETARY

GEAR GP

7. 3S-6922 TRANSFER G

VALVE GP-RELIEF

8. 7G-4491 VALVE GP-R

VALVE GP-SELECTOR

9. 1P-6591 VALVE GP-S
0. INFORMATION

TRACK LOADER 977L TRACK LOADER 14X
977L TRACK LOADER 14X00001-UP (MACHINE) POWERED BY 3306 ENGINE SEBP1207 977L 14X (1978)

OPERATOR STATION

CONTROL GP-TRANSMISSION

8P-7764 CONTROL GP-TRANSMISSION

#SEBP12070240

8P-7764: CONTROL GP-TRANSMISSION

CONTROL GP-TRANSMISSION

8P7764 TRANSMISSION CONTROL GROUP--Part 1
Serial No. 14X1364-Up

c304067 SEBP1207

8P7764 CONTROL GP-TRANSMISSION Parts scheme

For full view, you need register

Parts for your 977L TRACK LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	9P-0537	[1]	GUIDE
2.	0L-1351	[5]	BOLT
3.	5M-2894	[9]	WASHER
4.	4S-4465	[4]	SCREW
5.	7M-0706	[1]	KNOB
6.	1A-2029	[1]	BOLT
7.	5P-1075	[4]	WASHER
8.	1K-3536 C	[1]	SPRING
9.	9P-0535	[1]	BRACKET ASSEM.
	4V-0152	[1]	WASHER
10.	0T-0102	[2]	BOLT
11.	7G-4132	[1]	LEVER ASSEM.
12.	0S-1587	[2]	BOLT
13.	9P-0899	[1]	LEVER
14.	1P-1928	[1]	YOKE
15.	1P-2624	[2]	BEARING
16.	1P-1936	[1]	SHAFT
17.	2L-1699	[1]	PIN
18.	9P-0900 C	[1]	SHAFT ASSEM.
19.	1B-8706	[1]	KEY
20.	4D-4064	[2]	ROD END
21.	1B-4203	[2]	NUT
22.	8M-6252	[1]	ROD
23.	4M-0496	[2]	BOLT
	1D-4717	[2]	NUT
24.	4M-0497	[1]	NUT
25.	3S-5008	[1]	LEVER
26.	0S-1591 C	[1]	BOLT
27.	6D-5974	[2]	BEARING
28.	9P-0902	[1]	BRACKET
29.	3B-1915	[3]	BOLT
30.	1B-1750 C	[2]	BALL JOINT
	1B-4201	[2]	NUT
31.	9F-5647	[1]	BEARING
32.	9P-1735	[1]	LEVER ASSEM.
	1B-8701	[1]	KEY
33.	4B-4276	[1]	WASHER
34.	1J-1971	[1]	PIN
	3B-4617	[1]	COTTER PIN
35.	9H-7084	[2]	WASHER
36.	9K-4848	[2]	WASHER
37.	9P-0538	[1]	BRACKET
38.	6V-1193	[3]	SCREW
39.	7G-4136	[1]	PLATE
40.	0L-1351 C	[1]	BOLT
	C		INDICATES CHANGE

#SEBP12070241

8P-7764: CONTROL GP-TRANSMISSION

CONTROL GP-TRANSMISSION

8P7764 TRANSMISSION CONTROL GROUP--Part 2
Serial No. 14X1364-Up

c225505 SEBP1207

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Parts for your 977L TRACK LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	1B-4201	[2]	NUT
2.	061-8529 C	[1]	ROD
3.	9P-5946	[1]	SEAL
4.	4M-0496	[2]	BOLT
5.	1D-4717	[2]	NUT
6.	3B-1915	[2]	BOLT
7.	8B-4037	[2]	WASHER
8.	9P-1950	[1]	LEVER
9.	1B-8706	[2]	KEY
10.	4M-0497	[2]	NUT
11.	3S-7337	[1]	LEVER
12.	4D-4064	[2]	ROD END
13.	1B-4203	[2]	NUT
14.	5H-4215	[1]	ROD
15.	2J-7295	[1]	SPRING
16.	9P-1016	[1]	SEAL
17.	9M-5732	[4]	RIVET
18.	3S-5722	[1]	LEVER
19.	2M-8908	[1]	KNOB
20.	9G-1643 C	[1]	LEVER ASSEM.
21.	9P-1543	[1]	COVER ASSEM.
22.	0L-1351	[2]	BOLT
23.	5P-1075	[2]	WASHER
24.	7G-3965	[1]	PLATE
	C		INDICATES CHANGE

#SEBP12070242

7G-4247: TRANSMISSION AR-RANGE

TRANSMISSION AR-RANGE

7G4247 TRANSMISSION ARRANGEMENT
IF TRANSMISSION IS SERIALIZED USE TRANSMISSION SERIAL NO. OTHERWISE USE VEHICLE SERIAL NO.
Serial No. 14X1 to 14X1688 inclusive. Transmission Serial No. 2KA1-Up. 8M6350 Control, 7G4244 Planetary,
3S6922 Gear and 7G4491 Valve parts are shown on Pages 97 through 102

c218738 SEBP1207

7G4247 TRANSMISSION AR-RANGE Parts scheme

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Parts for your 977L TRACK LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	3S-6922 Y	[1]	GEAR GROUP
2.	8M-6350 Y	[1]	CONTROL GROUP
3.	7G-4244 Y	[1]	PLANETARY GROUP
			(Separate Illustration)
4.	1P-4459	[1]	CASE ASSEM.
			(Includes)
5.	5M-1932	[3]	STUD
6.	8H-8175	[4]	BEARING
7.	1M-3833	[2]	DOWEL
8.	3B-0623	[1]	PLUG
9.	9M-2053	[1]	COVER ASSEM.
			(Includes)
	2S-6548	[1]	FITTING
10.	7M-7794	[4]	STUD
11.	5M-9653	[1]	COVER
	5M-9654	[1]	GASKET
12.	9S-4191	[1]	PLUG
	3J-1907	[1]	SEAL
13.	1D-4717	[4]	NUT
14.	3B-4506	[28]	LOCKWASHER
15.	0S-1594	[14]	BOLT
16.	3B-1915	[6]	BOLT
17.	2S-0486	[1]	SLEEVE
	8M-4437	[2]	SEAL
18.	7G-4491 Y	[1]	VALVE GROUP
			(Separate Illustration)
19.	0S-1619	[4]	BOLT
20.	8M-8621	[1]	GASKET
21.	2S-4957	[1]	SLEEVE
	8M-4437	[1]	SEAL
22.	2S-6450	[1]	COVER GROUP
			(For Shipping and Storage-Includes Covers, Gaskets, and Hardware)
23.	9M-2051	[1]	GASKET
	Y		SEPARATE ILLUSTRATION

#SEBP12070243

7G-4247: TRANSMISSION AR-RANGE

TRANSMISSION AR-RANGE

7G4247 TRANSMISSION ARRANGEMENT
IF TRANSMISSION IS SERIALIZED USE TRANSMISSION SERIAL NO. OTHERWISE USE VEHICLE SERIAL NO.
Serial No. 14X1 to 14X1688 inclusive. Transmission Serial No. 2KA1-Up. Part of 7G4247 Transmission Arrangement
shown on Page 96. 1P6591 Selector Valve & 8P7791 Pressure Control parts are shown on Pages 102 & 103

c230319 SEBP1207

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Parts for your 977L TRACK LOADER:

CATERPILLAR SIS

Part No	Qty	Parts name
7M-5915	[1]	PIN
8M-8658 C	[1]	CAM
1A-1460	[1]	BOLT
1D-5117	[1]	NUT
3B-4508	[1]	LOCKWASHER
4B-4280	[1]	WASHER
9S-5222 C	[1]	SPACER
9H-0223	[1]	SEAL
8M-1040	[1]	DETENT ASSEM.
9M-2022	[1]	DOWEL
		(PART OF DETENT ASSEM. 8M1040)
4M-1768	[1]	SPRING
2S-0484	[2]	SLEEVE
8M-4389	[4]	SEAL
1P-6591 Y	[1]	SELECTOR VALVE GROUP
		(SEPARATE ILLUSTRATION)
8M-4445	[4]	SEAL
0T-0573	[3]	BOLT
5M-2894	[3]	WASHER
2S-5718	[1]	SLEEVE
4M-8303	[2]	SEAL
0L-2070	[3]	BOLT
5M-2894	[3]	WASHER
8M-8652	[1]	SHAFT
4M-1768	[1]	SPRING
5M-2894	[1]	WASHER
1B-4203	[1]	NUT
9H-0223	[1]	SEAL
9M-2022	[1]	DOWEL
		(PART OF DETENT ASSEM. 8M1040)
8M-1040	[1]	DETENT ASSEM.
1A-1460	[1]	BOLT
1D-5117	[1]	NUT
3B-4508	[1]	LOCKWASHER
4B-4280	[1]	WASHER
9S-5222 C	[1]	SPACER
8M-8653	[1]	CAM
1B-4203	[1]	NUT
5M-2894	[1]	WASHER
7M-5915	[1]	PIN
9M-2020	[1]	SHAFT
9M-2089	[1]	DOWEL
2S-0484	[1]	SLEEVE
8M-4389	[2]	SEAL
8M-8636	[1]	LEVER
1B-4203	[1]	NUT
5M-2894	[1]	WASHER
7M-5915	[1]	PIN
9M-2096	[1]	DOWEL
8M-4448	[2]	SEAL
8P-7791 CY	[1]	PRESSURE CONTROL GROUP
		(SEPARATE ILLUSTRATION)
C		INDICATES CHANGE
Y		SEPARATE ILLUSTRATION

#SEBP12070244

7G-4244: PLANETARY GP

PLANETARY GP

7G4244 PLANETARY TRANSMISSION GROUP--Part 1 of 3
IF TRANSMISSION IS SERIALIZED USE TRANSMISSION SERIAL NO. OTHERWISE USE VEHICLE SERIAL NO.
Serial No. 14X1 to 14X1688 inclusive. Transmission Serial No. 2KA1-Up. Part of 7G4247 Transmission Arrangement shown on Page 96

c176503 SEBP1207

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Parts for your 977L TRACK LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	8M-8645	[1]	PLATE
	7M-8479	[1]	DOWEL (Long)
	7M-8480	[1]	DOWEL (Short)
2.	2M-3974	[1]	RING
3.	5M-7936	[1]	OUTER RACE AND ROLLER ASSEM.
	5M-7934	[1]	INNER RACE
4.	9M-1997	[1]	BEARING
5.	3P-5078	[1]	SPACER
6.	3S-6931	[1]	RING
7.	3S-4388	[1]	WASHER
8.	0L-0139	[1]	BOLT
9.	1S-6543	[1]	SEAL
10.	8M-8628	[1]	FLANGE
11.	1T-0043	[1]	BEARING
12.	8M-8619	[1]	CAGE
13.	8F-6230	[1]	SEAL
14.	1K-6986	[2]	RING
15.	1M-0498	[2]	RING
16.	5P-8091	[3]	BOLT
17.	2M-0849	[3]	WASHER
18.	9M-1502	[1]	CAGE
19.	8M-8677	[1]	CARRIER
20.	9M-1503	[2]	RING
21.	1M-8652	[1]	RING
22.	8P-6803	[1]	SHAFT ASSEM.
			(Includes)
	9M-2001	[1]	DOWEL
23.	5M-7923	[1]	SHAFT
24.	9M-2004	[1]	BEARING

#SEBP12070245

7G-4244: PLANETARY GP

PLANETARY GP

7G4244 PLANETARY TRANSMISSION GROUP--Part 2 of 3
IF TRANSMISSION IS SERIALIZED USE TRANSMISSION SERIAL NO. OTHERWISE USE VEHICLE SERIAL NO.
Serial No. 14X1 to 14X1688 inclusive. Transmission Serial No. 2KA1-Up. Part of 7G4247 Transmission Arrangement shown on Page 96

c176289 SEBP1207

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Parts for your 977L TRACK LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	5M-6126	[21]	BEARING
	7G-0894	[42]	WASHER
2.	7G-2513 C	[6]	GEAR (26 teeth)
3.	9M-2049	[2]	GEAR (96 and 80 teeth)
4.	8P-8679 C	[6]	DISC. ASSEM.
5.	2P-4472 R	[7]	PLATE
6.	8M-8644	[1]	HOUSING
7.	7G-2476 C	[6]	GEAR (20 teeth)
8.	4S-8708	[1]	HOUSING
	7M-8480	[2]	DOWEL (short)
	7M-8479	[2]	DOWEL (long)
9.	4M-9592	[30]	SPRING
10.	9P-5379	[1]	HOUSING
11.	7G-2475 C	[3]	GEAR (24 teeth)
12.	8M-8646	[1]	PLATE ASSEM.
			(Includes)
	7M-8479	[2]	DOWEL
	2D-6642	[2]	BALL
13.	4M-1678	[10]	SPRING
14.	9M-2013	[1]	HOUSING ASSEM.
			(Includes)
	2D-6642	[2]	BALL
15.	5M-6211	[3]	SHAFT
16.	2D-6642	[3]	BALL
17.	5D-0353	[6]	BOLT
	6H-4208	[3]	LOCK
18.	5M-6212	[3]	TUBE
19.	8M-8623	[1]	GEAR (40 teeth)
20.	4S-8718	[1]	CAGE
21.	5M-7900	[9]	BOLT
22.	2M-0849	[9]	WASHER
23.	5M-6120	[1]	GEAR (23 teeth)
24.	9M-1501	[3]	PLATE
25.	5K-9107	[15]	BOLT
26.	1S-6527	[3]	PLATE
27.	8M-8509	[3]	LOCK
	C		INDICATES CHANGE
	R		REMFG PART MAY BE AVAILABLE

#SEBP12070246

7G-4244: PLANETARY GP

PLANETARY GP

7G4244 PLANETARY TRANSMISSION GROUP--Part 3 of 3
IF TRANSMISSION IS SERIALIZED USE TRANSMISSION SERIAL NO. OTHERWISE USE VEHICLE SERIAL NO.
Serial No. 14X1 to 14X1688 inclusive. Transmission Serial No. 2KA1-Up. Part of 7G4247 Transmission Arrangement shown on Page 96

c181049 SEBP1207

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Parts for your 977L TRACK LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	9M-1995	[1]	GEAR (35 teeth)
2.	5M-6210	[3]	SHAFT
3.	2D-6642	[9]	BALL
4.	7M-1177	[1]	RING (Standard)
	6P-8267 J	[1]	RING 0.39 mm(.015 in.) Oversize
	9P-2944 J	[1]	RING 0.77 mm(.030 in.) Oversize
5.	5M-6132	[4]	RING (Standard)
	6P-8264 J	[4]	RING 0.39 mm(.015 in.) Oversize
	6P-8258 J	[4]	RING 0.77 mm(.030 in.) Oversize
6.	8M-8649	[1]	PISTON
7.	9M-1990	[5]	DOWEL
8.	5M-7841	[2]	GEAR (96 and 80 teeth)
9.	9P-5254	[6]	DISC ASSEM.
10.	9P-5363	[1]	PISTON
11.	7G-2476 C	[6]	GEAR (20 teeth)
12.	9M-1500	[3]	SHAFT
13.	5M-7875	[1]	CARRIER
14.	5M-7869	[1]	GEAR (96 and 74 teeth)
15.	8M-8650	[3]	PISTON
16.	4M-1641	[5]	DOWEL
17.	9M-1996	[3]	SHAFT
18.	5M-6141	[4]	RING (Standard)
	6P-8266 J	[4]	RING 0.39 mm(.015 in.) Oversize
	9P-2945 J	[4]	RING 0.77 mm(.030 in.) Oversize
19.	6K-7917	[3]	BOLT
	2M-0706	[3]	LOCK
20.	9P-5364	[1]	RING (Standard)
			-OR-
	3T-2571 C	[1]	RING 0.38 mm O.S.
			-OR-
	3T-2572	[1]	RING 0.76 mm O.S.
	6V-1720 F	[1]	PLATE (Serial Number)
	7B-3028 F	[2]	SCREW (Mounted on Case Assem.)
	C		INDICATES CHANGE
	J		NOT PART OF 7G4244 PLANETARY TRANSMISSION GROUP
	F		NOT SHOWN

#SEBP12070247

3S-6922: TRANSFER GEAR GROUP

TRANSFER GEAR GROUP

3S6922 TRANSFER GEAR GROUP
IF TRANSMISSION IS SERIALIZED USE TRANSMISSION SERIAL NO.
OTHERWISE USE VEHICLE SERIAL NO. Serial No. 14X1 to 14X1688 inclusive
Transmission Serial No. 2KA1-Up. Part of 7G4247 Transmission Arrangement
shown on Page 96

c135790 SEBP1207

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Parts for your 977L TRACK LOADER:

CATERPILLAR SIS

Part No	Qty	Parts name
1D-4719	[3]	NUT
3B-4508	[3]	LOCKWASHER
9M-2060	[1]	CASE ASSEM.
9M-2001	[1]	DOWEL
		(PART OF CASE ASSEM.9M2060)
3S-6908	[1]	GEAR (30 TEETH)
2A-3746	[3]	PLUG
0S-1594	[4]	BOLT
1A-5823	[2]	LOCK
4M-3122	[1]	DOWEL
9M-2042	[2]	RACE (OUTER)
1M-4095	[2]	INNER RACE AND ROLLER ASSEM.
8M-8659	[3]	DOWEL
		(PART OF CASE ASSEM.9M2060)
5M-9644	[1]	INNER RACE AND ROLLER ASSEM.
8H-8024	[1]	RING
9M-1498	[1]	CAGE
0S-1594	[2]	BOLT
9M-1367	[1]	LOCK
2M-0138	[1]	DOWEL (2.56"LONG)
7M-1154	[1]	INNER RACE AND ROLLER ASSEM.
4M-3122	[1]	DOWEL (1.50"LONG)
9M-1998	[1]	INNER RACE AND ROLLER ASSEM.
2S-1437	[1]	RACE (OUTER)
9M-2045	[1]	PINION (17 TEETH)
9M-2012	[1]	SPACER
5M-7339	[1]	WASHER
9M-1499	[1]	RACE (OUTER)
3S-6907	[1]	GEAR (40 TEETH)
0S-1585	[10]	BOLT
9M-1497	[5]	LOCK
5M-7329	[1]	SEAL
9M-2021	[1]	GASKET
0S-1585	[14]	BOLT
3B-4508	[14]	LOCKWASHER

#SEBP12070248

7G-4491: VALVE GP-RELIEF

VALVE GP-RELIEF

7G4491 RELIEF VALVE GROUP
IF TRANSMISSION IS SERIALIZED USE TRANSMISSION SERIAL NO.
OTHERWISE USE VEHICLE SERIAL NO. Serial No. 14X1 to 14X1688 inclusive
Transmission Serial No. 2KA1-Up. Part of 7G4247 Transmission Arrangement
shown on Page 96

c218740 SEBP1207

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Parts for your 977L TRACK LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	0S-1594	[2]	BOLT
	3B-4506	[2]	LOCKWASHER
2.	4M-8815	[1]	COVER
3.	8M-5254	[1]	SEAL-O-RING
4.	8M-8599	[1]	BODY-VALVE
5.	9S-4191	[1]	PLUG-O-RING
6.	3J-1907	[1]	SEAL-O-RING
7.	8M-8598	[1]	SPOOL-RELIEF VALVE
8.	2S-5816	[1]	SPRING

#SEBP12070249

1P-6591: VALVE GP-SELECTOR

VALVE GP-SELECTOR

1P6591 SELECTOR VALVE GROUP
IF TRANSMISSION IS SERIALIZED USE TRANSMISSION SERIAL NO.
OTHERWISE USE VEHICLE SERIAL NO. Serial No. 14X1 to 14X1688 inclusive
Transmission Serial No. 2KA1-Up. Part of 8M6350 Transmission Hydraulic
Control Group shown on Page 97

c147455 SEBP1207

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Parts for your 977L TRACK LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	3L-1850	[2]	PLUG-PIPE
2.	5S-0909	[2]	LINK-ADJUSTING
3.	2S-5717	[2]	NUT-LOCK
4.	5M-9567	[1]	SPOOL
5.	9S-8005	[1]	PLUG-O-RING
	3K-0360	[1]	SEAL-O-RING
6.	1P-6596	[1]	SPOOL-SPEED SELECTOR
7.	2D-6642	[1]	BALL