1V4911 TRANSMISSION CONTROL GROUP--Part 2 of 2 Serial No. 50W4340-Up 3V979 Control Lock parts are shown on Page 117B 988B

OPERATOR STATION

CONTROL GP-TRANSMISSION

0. 1V-4911 CONTROL GP

POWER TRAIN

TRANSMISSION GP

1. 3P-3057 PLANETARY
2. 3P-3057 PLANETARY
3. 3P-3057 PLANETARY
4. 3P-3057 PLANETARY
5. 3P-3057 PLANETARY
6. 3P-3057 PLANETARY
7. 3P-3057 PLANETARY
8. 3P-3057 PLANETARY
9. 3P-3057 PLANETARY
0. INFORMATION

WHEEL LOADER 988B WHEEL LOADER 50W
988B WHEEL LOADER 50W00001-06040 (MACHINE) POWERED BY 3408 ENGINE SEBP1079 988B 50W (1976)

OPERATOR STATION

CONTROL GP-TRANSMISSION

1V-4911 CONTROL GP-TRANSMISSION

#SEBP10790400

1V-4911: CONTROL GP-TRANSMISSION

CONTROL GP-TRANSMISSION

1V4911 TRANSMISSION CONTROL GROUP--Part 2 of 2
Serial No. 50W4340-Up
3V979 Control Lock parts are shown on Page 117B

c176155 SEBP1079

1V4911 CONTROL GP-TRANSMISSION Parts scheme

For full view, you need register

Parts for your 988B WHEEL LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	2V-6076	[1]	CAM
2.	4V-0074	[1]	END
3.	8D-5294	[2]	RING
	8D-5295	[2]	PIN
4.	2V-6078	[2]	BRACKET
5.	3V-0979 Y	[1]	LOCK GROUP
			(Separate Illustration)
6.	1H-9696	[1]	SEAL
7.	9S-4190	[2]	PLUG
8.	1A-2029	[2]	BOLT
9.	3B-4506	[5]	LOCKWASHER
10.	1V-6341	[2]	SEAL
11.	4D-3704	[2]	WASHER
12.	0L-1351	[2]	BOLT
13.	6F-0612	[1]	NUT
14.	8B-3768	[1]	END
15.	4F-7952	[2]	SEAL
16.	1T-0765	[2]	BOLT
17.	4D-7794	[1]	CLIP
18.	0S-0509	[1]	BOLT
19.	1B-4330 C	[3]	NUT
	1H-3338 C	[3]	LOCKWASHER
20.	1B-7904 C	[2]	SPACER
21.	0S-1615 C	[1]	BOLT
22.	2V-3216 C	[2]	CLIP
23.	C	[1]	RETAINER
24.	2V-3215 C	[1]	SEAL
	C		INDICATES CHANGE
	Y		SEPARATE ILLUSTRATION

#SEBP10790401

3P-3057: PLANETARY GP

PLANETARY GP

3P3057 PLANETARY TRANSMISSION GROUP--Part 1 of 3
Serial No. 50W1 to 50W2327, 50W2330 & 50W2334 inclusive and Test No. 1 to 2385 inclusive
Part of 3P9094 Transmission Arrangement shown on Page 113

c169573 SEBP1079

For full view, you need register

Parts for your 988B WHEEL LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	3P-4051	[1]	SPACER
2.	3P-3059	[1]	GEAR (sun-fwd.-42 teeth)
3.	6P-7392	[1]	HOUSING ASSEM.
			(Includes)
	9S-1343	[1]	PLUG
4.	3P-3737	[1]	PLATE ASSEM.
			(Includes)
	7M-8479	[1]	DOWEL
	2D-6642	[1]	BALL
5.	3P-2414	[1]	HOUSING
6.	3P-3738	[1]	HOUSING ASSEM.
			(Includes)
	7M-8480	[4]	DOWEL
7.	3P-2791	[1]	HOUSING
8.	2D-8363	[1]	SEAL
9.	7G-0693 C	[1]	MANIFOLD ASSEM.
			(Includes)
	7M-8480	[4]	DOWEL
10.	4K-8603	[1]	PLUG
11.	3F-3442	[1]	DOWEL
12.	6J-6721	[20]	BOLT
	2M-0849	[20]	WASHER
13.	3P-2761	[1]	HOUSING
14.	3P-2415	[1]	CARRIER
15.	3P-3743	[1]	RING
16.	3P-4050	[1]	SPACER
17.	3P-4054	[1]	SHAFT ASSEM.
			(Includes)
18.	3P-3103	[1]	CARRIER
19.	5P-0403	[1]	BEARING
20.	1P-0014	[1]	RING
21.	3H-2652	[1]	SEAL
22.	6S-1753	[1]	RING
23.	8P-1419	[1]	SPACER
24.	8S-9104	[2]	RING
25.	5P-9594 C	[2]	BEARING
26.	3P-2983	[1]	GEAR (sun-rev.-32 teeth)
27.	6P-1543	[1]	SHAFT ASSEM.
			(Includes)
	9M-2001	[2]	DOWEL
28.	9S-4191	[1]	PLUG
	3J-1907	[1]	SEAL
	C		INDICATES CHANGE

#SEBP10790402

3P-3057: PLANETARY GP

PLANETARY GP

3P3057 PLANETARY TRANSMISSION GROUP--Part 2 of 3
Serial No. 50W1 to 50W2327, 50W2330 & 50W2334 inclusive and Test No. 1 to 2385 inclusive
Part of 3P9094 Transmission Arrangement shown on Page 113

c169574 SEBP1079

For full view, you need register

Parts for your 988B WHEEL LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	0L-1558	[1]	BOLT 8.26cm (3.25 in.) long
			-OR-
	0L-2315 C	[1]	BOLT 8.89cm (3.5 in.) long
	6K-8717 C	[1]	WASHER
2.	3P-3496	[1]	PLATE
3.	3P-2795	[1]	SEAL
4.	3P-2810	[1]	GEAR (ring-rev.-40 teeth)
5.	3P-2793	[5]	SEAL
6.	3P-9367	[1]	PISTON
7.	3P-3418	[1]	GEAR (ring-rev.-88 teeth)
8.	7G-0283 C	[2]	GEAR (ring-first-90 teeth)
9.	3P-9366	[1]	PISTON
10.	3P-2794	[4]	SEAL
11.	5B-9603	[2]	BOLT
12.	3P-2685	[3]	PISTON
13.	9M-4355	[20]	DAMPER
14.	2M-3403	[20]	BOLT
	5M-2894	[20]	WASHER
15.	3P-3060	[1]	GEAR (sun-first-50 teeth)
16.	3P-3735	[1]	HOUSING ASSEM.
			(Includes)
	4S-8537	[1]	DOWEL
17.	6P-7705	[1]	CARRIER
18.	6B-6863	[1]	PIN
19.	1N-5410	[1]	RING
20.	7G-0894 C	[8]	WASHER
21.	3P-3242	[4]	SHAFT
22.	5M-2054	[8]	BEARING
23.	3K-2230	[4]	GEAR
24.	6P-5725	[1]	SLINGER
	3H-6591	[8]	BOLT
	6P-5724	[4]	LOCK
25.	1S-9989	[6]	DOWEL
26.	9H-5546	[6]	DOWEL
27.	6P-5751	[1]	GEAR (ring-third-90 teeth)
28.	3P-3707	[1]	RING
29.	9H-5537	[36]	SPRING
30.	3P-3098	[1]	GEAR (ring-fourth-90 teeth)
31.	9M-1990	[6]	DOWEL
32.	2P-5755	[12]	SPRING
33.	6F-0156	[1]	SEAL
34.	5S-1041	[3]	RING
35.	4S-8546	[3]	BEARING
36.	3P-3441	[2]	RING
	5M-2477 H	[1]	PLATE (number)
	7B-3028	[2]	SCREW
	C		INDICATES CHANGE
	H		NOT SHOWN

#SEBP10790403

3P-3057: PLANETARY GP

PLANETARY GP

3P3057 PLANETARY TRANSMISSION GROUP--Part 3 of 3
Serial No. 50W1 to 50W2327, 50W2330 & 50W2334 inclusive and Test No. 1 to 2385 inclusive
Part of 3P9094 Transmission Arrangement shown on Page 113

c316978 SEBP1079

For full view, you need register

Parts for your 988B WHEEL LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	8P-4617	[1]	SEAL
2.	9G-5287 C	[6]	DISC ASSEM.
3.	3P-7447	[9]	PLATE
4.	5M-6187	[1]	SEAL
5.	9M-1503	[1]	SEAL
6.	3P-3096	[1]	GEAR (sun-third-51 teeth)
7.	3P-2759	[1]	CARRIER
8.	3P-7489	[4]	PLATE
9.	6P-7379	[1]	HOUSING ASSEM.
			(Includes)
10.	8B-1312	[3]	DOWEL
11.	9P-6082 C	[5]	DISC ASSEM.
12.	6P-5554	[1]	HUB ASSEM.
			(Includes)
	4S-8537	[1]	DOWEL
13.	3P-3304	[1]	PLATE
14.	7J-6525	[1]	RING
15.	3P-3673	[2]	RING
16.	9M-2095	[1]	RING
17.	1P-9261	[1]	SEAL
18.	3P-2768	[1]	PISTON
19.	3P-3635	[3]	SPRING
20.	9P-5499 C	[8]	DISC ASSEM.
21.	3P-2792	[1]	SEAL
22.	7G-0894 C	[6]	WASHER
23.	5M-6113	[3]	GEAR (planet-third-20 teeth)
	5M-6126	[3]	ROLLER ASSEM.
24.	6P-6739	[3]	SHAFT
25.	3P-3321	[2]	SEAL
26.	3P-2934	[6]	GEAR (planet-fwd & 4th-25 teeth)
	5M-7925	[6]	BEARING
27.	3P-3245	[3]	SHAFT
28.	7G-0897 C	[12]	WASHER
29.	3P-3708	[1]	RING
30.	3P-2684	[1]	CARRIER
31.	1P-3958	[3]	ROLLER ASSEM.
32.	3S-2708	[13]	PIN
33.	3P-3246	[3]	SHAFT
34.	9F-3788	[1]	SEAL
35.	7G-0899 C	[6]	WASHER
36.	3P-2839 C	[3]	GEAR (planet-rev.-28 teeth)
37.	3P-3739	[1]	CARRIER ASSEM.
			(Includes)
	4S-8537	[1]	DOWEL
	C		INDICATES CHANGE

#SEBP10790404

3P-3057: PLANETARY GP

PLANETARY GP

3P3057 PLANETARY TRANSMISSION GROUP--Part 1 of 3
Serial No. 50W2328, 2329, 2331 to 2333, 2335 to 3048, 3059, 3061, 3064 to 3066, 3072, 3077,
3081, 3083, 3084, 3094, 3101, 3110, 3111, 3119, 3126, 3136, 3145 and 50W3152 inclusive & Test
No. 2386 to 3161 inclusive. Part of 3P9094 Transmission Arrangement shown on Page 113

c220473 SEBP1079

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Parts for your 988B WHEEL LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	3P-4051	[1]	SPACER
2.	3P-3059	[1]	GEAR (sun-fwd. -42 teeth)
3.	6P-7392	[1]	HOUSING ASSEM.
			(Includes)
	9S-1343	[1]	PLUG
4.	3P-3737	[1]	PLATE ASSEM.
			(Includes)
	7M-8479	[1]	DOWEL
	2D-6642	[1]	BALL
5.	3P-2414	[1]	HOUSING
6.	3P-3738	[1]	HOUSING ASSEM.
			(Includes)
	7M-8480	[4]	DOWEL
7.	3P-2791	[1]	HOUSING
8.	2D-8363	[1]	SEAL
9.	7G-0693	[1]	MANIFOLD ASSEM.
			(Includes)
	7M-8480	[4]	DOWEL
10.	4K-8603	[1]	PLUG
11.	3F-3442	[1]	DOWEL
12.	6J-6721 C	[18]	BOLT
13.	3P-2761	[1]	HOUSING
14.	3P-2415	[1]	CARRIER
15.	3P-3743	[1]	RING
16.	3P-4050	[1]	SPACER
17.	3P-4054	[1]	SHAFT ASSEM.
			(Includes)
18.	3P-3103	[1]	CARRIER
19.	5P-0403	[1]	BEARING
20.	1P-0014	[1]	RING
21.	3H-2652	[1]	SEAL
22.	6S-1753	[1]	RING
23.	8P-1419	[1]	SPACER
24.	8S-9104	[2]	RING
25.	5P-9594	[2]	BEARING
26.	3P-2983	[1]	GEAR (sun-rev. -32 teeth)
27.	6P-1543	[1]	SHAFT ASSEM.
			(Includes)
	9M-2001	[2]	DOWEL
28.	9S-4191	[1]	PLUG
	3J-1907	[1]	SEAL
29.	2M-0849	[20]	WASHER
30.	8S-6212 C	[2]	BOLT
	C		INDICATES CHANGE

#SEBP10790405

3P-3057: PLANETARY GP

PLANETARY GP

3P3057 PLANETARY TRANSMISSION GROUP--Part 2 of 3
Serial No. 50W2328, 2329, 2331 to 2333, 2335 to 3048, 3059, 3061, 3064 to 3066, 3072,
3077, 3081, 3083, 3084, 3094, 3101, 3110, 3111, 3119, 3126, 3136, 3145 and 50W3152
inclusive and Test No. 2386 to 3161 inclusive. Part of 3P9094 Transmission Arrangement shown on Page 113

c220474 SEBP1079

For full view, you need register

Parts for your 988B WHEEL LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	0L-2315	[1]	BOLT
2.	7G-2928 C	[1]	PLATE
3.	3P-2795	[1]	SEAL
4.	3P-2810	[1]	GEAR (ring-rev. -40 teeth)
5.	3P-2793	[5]	SEAL
6.	3P-9367	[1]	PISTON
7.	3P-3418	[1]	GEAR (ring-rev. -88 teeth)
8.	7G-0283	[2]	GEAR (ring-first-90 teeth)
9.	3P-9366	[1]	PISTON
10.	3P-2794	[4]	SEAL
11.	5B-9603	[2]	BOLT
12.	3P-2685	[3]	PISTON
13.	9M-4355	[20]	DAMPER
14.	2M-3403	[20]	BOLT
	5M-2894	[20]	WASHER
15.	3P-3060	[1]	GEAR (sun-first-50 teeth)
16.	3P-3735	[1]	HOUSING ASSEM.
			(Includes)
	4S-8537	[1]	DOWEL
17.	6P-7705	[1]	CARRIER
18.	6B-6863	[1]	PIN
19.	1N-5410	[1]	RING
20.	7G-0894	[8]	WASHER
21.	3P-3242	[4]	SHAFT
22.	5M-2054	[8]	BEARING
23.	3K-2230	[4]	GEAR
24.	6P-5725	[1]	SLINGER
	3H-6591	[8]	BOLT
	6P-5724	[4]	LOCK
25.	1S-9989	[6]	DOWEL
26.	9H-5546	[6]	DOWEL
27.	6P-5751	[1]	GEAR (ring-third-90 teeth)
28.	3P-3707	[1]	RING
29.	9H-5537	[36]	SPRING
30.	3P-3098	[1]	GEAR (ring-fourth-90 teeth)
31.	9M-1990	[6]	DOWEL
32.	2P-5755	[12]	SPRING
33.	6F-0156	[1]	SEAL
34.	5S-1041	[3]	RING
35.	4S-8546	[3]	BEARING
36.	3P-3441	[2]	RING
	5M-2477 H	[1]	PLATE (number)
	7B-3028	[2]	SCREW
	C		INDICATES CHANGE
	H		NOT SHOWN

#SEBP10790406

3P-3057: PLANETARY GP

PLANETARY GP

3P3057 PLANETARY TRANSMISSION GROUP--Part 3 of 3
Serial No. 50W2328, 2329, 2331 to 2333, 2335 to 3048, 3059, 3061, 3064 to 3066, 3072, 3077, 3081,
3083, 3084, 3094, 3101, 3110, 3111, 3119, 3126, 3136, 3145 and 50W3152 inclusive and Test
No. 2386 to 3161 inclusive. Part of 3P9094 Transmission Arrangement shown on Page 113

c221353 SEBP1079

For full view, you need register

Parts for your 988B WHEEL LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	8P-4617	[1]	SEAL
2.	9P-5500	[6]	DISC ASSEM.
3.	3P-7447	[9]	PLATE
4.	5M-6187	[1]	SEAL
5.	9M-1503	[1]	SEAL
6.	3P-3096	[1]	GEAR (sun-third-51 teeth)
7.	3P-2759	[1]	CARRIER
8.	3P-7489	[4]	PLATE
9.	6P-7379	[1]	HOUSING ASSEM.
			(Includes)
10.	8B-1312	[3]	DOWEL
11.	9P-6082	[5]	DISC ASSEM.
12.	6P-5554	[1]	HUB ASSEM.
			(Includes)
	4S-8537	[1]	DOWEL
13.	3P-3304	[1]	PLATE
14.	7J-6525	[1]	RING
15.	3P-3673	[2]	RING
16.	9M-2095	[1]	RING
17.	1P-9261	[1]	SEAL
18.	3P-2768	[1]	PISTON
19.	3P-3635	[3]	SPRING
20.	9P-5499	[8]	DISC ASSEM.
21.	3P-2792	[1]	SEAL
22.	7G-0894	[6]	WASHER
23.	5M-6113	[3]	GEAR (planet-third-20 teeth)
	5M-6126	[3]	ROLLER ASSEM.
24.	6P-6739	[3]	SHAFT
25.	3P-3321	[2]	SEAL
26.	3P-2934	[6]	GEAR (planet-fwd & 4th-25 teeth)
	5M-7925	[6]	BEARING
27.	3P-3245	[3]	SHAFT
28.	7G-0897	[12]	WASHER
29.	3P-3708	[1]	RING
30.	3P-2684	[1]	CARRIER
31.	1P-3958	[3]	ROLLER ASSEM.
32.	3S-2708	[13]	PIN
33.	3P-3246	[3]	SHAFT
34.	9F-3788	[1]	SEAL
35.	7G-0899	[6]	WASHER
36.	3P-2839 C	[3]	GEAR (planet-rev. -28 teeth)
37.	3P-3739	[1]	CARRIER ASSEM.
			(Includes)
	4S-8537	[1]	DOWEL
38.	5J-5794 C	[2]	BOLT
	C		INDICATES CHANGE

#SEBP10790407

3P-3057: PLANETARY GP

PLANETARY GP

3P3057 PLANETARY TRANSMISSION GROUP--Part 1 of 3
IF TRANSMISSION IS SERIALIZED, USE TRANSMISSION SERIAL NO. OTHERWISE, USE VEHICLE SERIAL NO. Vehicle Serial No. 50W3049 to 3058,
3060, 3062, 3063, 3067 to 3071, 3073 to 3076, 3078 to 3080, 3082, 3085 to 3093, 3095 to 3100, 3102 to 3109, 3112 to 3118, 3120 to
3125, 3127 to 3135, 3137 to 3144, 3146 to 3151 and 50W3153 to 50W4353 inclusive and Test No. 3162-Up. Transmission Serial No.
2MA1-Up. Part of 3P9094 Transmission Arrangement shown on Page 113

c172449 SEBP1079

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Parts for your 988B WHEEL LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	3P-4051	[1]	SPACER
2.	3P-3059	[1]	GEAR (sun-fwd. -42 teeth)
3.	6P-7392	[1]	HOUSING ASSEM.
			(Includes)
	9S-1343	[1]	PLUG
4.	3P-3737	[1]	PLATE ASSEM.
			(Includes)
	7M-8479	[1]	DOWEL
	2D-6642	[1]	BALL
5.	3P-2414	[1]	HOUSING
6.	3P-3738	[1]	HOUSING ASSEM.
			(Includes)
	7M-8480	[4]	DOWEL
7.	3P-2791	[1]	HOUSING
8.	2D-8363	[1]	SEAL
9.	7G-7139 C	[1]	MANIFOLD ASSEM.
			(Includes)
	7M-8480	[4]	DOWEL
10.	4K-8603	[1]	PLUG
11.	3F-3442	[1]	DOWEL
12.	6J-6721	[18]	BOLT
13.	3P-2761	[1]	HOUSING
14.	3P-2415	[1]	CARRIER
15.	3P-3743	[1]	RING
16.	3P-4050	[1]	SPACER
17.	3P-4054	[1]	SHAFT ASSEM.
			(Includes)
18.	3P-3103	[1]	CARRIER
19.	5P-0403	[1]	BEARING
20.	1P-0014	[1]	RING
21.	7F-2122 C	[2]	SEAL
22.	6S-1753	[1]	RING
23.	8P-1419	[1]	SPACER
24.	8S-9104	[2]	RING
25.	6V-1781 C	[2]	BEARING
26.	3P-2983	[1]	GEAR (sun-rev.-32 teeth)
27.	6P-1543	[1]	SHAFT ASSEM.
			(Includes)
	9M-2001	[2]	DOWEL
28.	9S-4191	[1]	PLUG
	3J-1907	[1]	SEAL
29.	2M-0849	[20]	WASHER
30.	8S-6212	[2]	BOLT
	C		INDICATES CHANGE

#SEBP10790408

3P-3057: PLANETARY GP

PLANETARY GP

3P3057 PLANETARY TRANSMISSION GROUP--Part 2 of 3
IF TRANSMISSION IS SERIALIZED, USE TRANSMISSION SERIAL NO. OTHERWISE, USE VEHICLE SERIAL NO. Vehicle Serial No. 50W3049 to
3058, 3060, 3062, 3063, 3067 to 3071, 3073 to 3076, 3078 to 3080, 3082, 3085 to 3093, 3095 to 3100, 3102 to 3109, 3112 to 3118,
3120 to 3125, 3127 to 3135, 3137 to 3144, 3146 to 3151 and 50W3153 to 50W4353 inclusive and Test No. 3162-Up. Transmission Serial
No. 2MA1-Up. Part of 3P9094 Transmission Arrangement shown on Page 113

c227559 SEBP1079

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Parts for your 988B WHEEL LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	0L-2315	[1]	BOLT
2.	7G-2928	[1]	PLATE
3.	3P-2795	[1]	SEAL
4.	3P-2810	[1]	GEAR (ring-rev. -40 teeth)
5.	3P-2793	[5]	SEAL
6.	3P-9367	[1]	PISTON
7.	3P-3418	[1]	GEAR (ring-rev. -88 teeth)
8.	7G-0283	[2]	GEAR (ring-first-90 teeth)
9.	3P-9366	[1]	PISTON
10.	3P-2794	[4]	SEAL
11.	5B-9603	[2]	BOLT
12.	3P-2685	[3]	PISTON
13.	9M-4355	[20]	DAMPER
14.	0T-0065 C	[20]	BOLT
	5M-2894	[20]	WASHER
15.	3P-3060	[1]	GEAR (sun-first-50 teeth)
16.	3P-3735	[1]	HOUSING ASSEM.
			(Includes)
	4S-8537	[1]	DOWEL
17.	6P-7705	[1]	CARRIER
18.	6B-6863	[1]	PIN
19.	1N-5410	[1]	RING
20.	7G-0894	[8]	WASHER
21.	3P-3242	[4]	SHAFT
22.	5M-2054	[8]	BEARING
23.	7G-2486 C	[4]	GEAR (20 teeth)
24.	6P-5725	[1]	SLINGER
	3H-6591	[8]	BOLT
	6P-5724	[4]	LOCK
25.	1S-9989	[6]	DOWEL
26.	9H-5546	[6]	DOWEL
27.	6P-5751	[1]	GEAR (ring-third-90 teeth)
28.	3P-3707	[1]	RING
29.	9H-5537	[36]	SPRING
30.	3P-3098	[1]	GEAR (ring-fourth-90 teeth)
31.	9M-1990	[6]	DOWEL
32.	2P-5755	[12]	SPRING
33.	6F-0156	[1]	SEAL
34.	6V-0836 C	[3]	RING
35.	4S-8546	[3]	BEARING
36.	3P-3441	[2]	RING
	C		INDICATES CHANGE

#SEBP10790409

3P-3057: PLANETARY GP

PLANETARY GP

3P3057 PLANETARY TRANSMISSION GROUP--Part 3 of 3
IF TRANSMISSION IS SERIALIZED, USE TRANSMISSION SERIAL NO. OTHERWISE, USE VEHICLE SERIAL NO. Vehicle Serial No. 50W3049 to
3058, 3060, 3062, 3063, 3067 to 3076, 3078 to 3080, 3082, 3085 to 3095 to 3100, 3102 to 3109, 3112 to 3118,
3120 to 3125, 3127 to 3135, 3137 to 3144, 3146 to 3151 and 50W3153 to 50W4353 inclusive and Test No. 3162-Up. Transmission Serial
No. 2MA1-Up. Part of 3P9094 Transmission Arrangement shown on Page 113

c237963 SEBP1079

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Parts for your 988B WHEEL LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	8P-4617	[1]	SEAL
2.	9G-5287 C	[14]	DISC ASSEM.
3.	3P-7447	[9]	PLATE
4.	5M-6187	[1]	SEAL
5.	9M-1503	[1]	SEAL
6.	3P-3096	[1]	GEAR (sun-third-51 teeth)
7.	3P-2759	[1]	CARRIER
8.	3P-7489	[4]	PLATE
9.	6P-7379	[1]	HOUSING ASSEM.
			(Includes)
10.	8B-1312	[3]	DOWEL
11.	9P-6082	[5]	DISC ASSEM.
12.	6P-5554	[1]	HUB ASSEM.
			(Includes)
	4S-8537	[1]	DOWEL
13.	3P-3304	[1]	PLATE
14.	7J-6525	[1]	RING
15.	9G-2991 C	[2]	RING
16.	9M-2095	[1]	RING
17.	1P-9261	[1]	SEAL
18.	3P-2768	[1]	PISTON
19.	3P-3635	[3]	SPRING
20.	5J-5794	[2]	BOLT
21.	3P-2792	[1]	SEAL
22.	7G-0894	[6]	WASHER
23.	7G-2476 C	[3]	GEAR (planet-third-20 teeth)
	5M-6126	[3]	ROLLER ASSEM.
24.	6P-6739	[3]	SHAFT
25.	3P-3321	[2]	SEAL
26.	7G-3457 C	[6]	GEAR (planet-fwd & 4th-25 teeth)
	5M-7925	[6]	BEARING
27.	3P-3245	[3]	SHAFT
28.	7G-0897	[12]	WASHER
29.	3P-3708	[1]	RING
30.	3P-2684	[1]	CARRIER
31.	1P-3958	[3]	ROLLER ASSEM.
32.	3S-2708	[13]	PIN
33.	3P-3246	[3]	SHAFT
34.	9F-3788	[1]	SEAL
35.	7G-0899	[6]	WASHER
36.	7G-3458 C	[3]	GEAR (planet-rev.-28 teeth)
37.	3P-3739	[1]	CARRIER ASSEM.
			(Includes)
	4S-8537	[1]	DOWEL
	C		INDICATES CHANGE