1V4946 FINAL DRIVE AND BRAKE WHEEL GROUP--2 Required Serial No. 50W3668-Up 1V5669 Final Drive and Brake Wheel parts are shown on Page 143A 988B

POWER TRAIN

AXLE GP

0. 1V-4946 WHEEL GP-F
1. 1V-5669 WHEEL GP-F
2. 1V-5669 WHEEL GP-F
3. 1V-5669 WHEEL GP-F

BRAKING SYSTEM

BRAKE GP

4. 1V-5667 BRAKE GP-S

POWER TRAIN

WHEEL GP

5. 1V-4941 DEMOUNTABL

BRAKING SYSTEM

BRAKE GP

6. 1V-5667 BRAKE GP-S

POWER TRAIN

WHEEL GP

7. 5V-4560 RIM GP-DEM
8. 5V-6025 CARCASS AR
9. 8V-1848 CARCASS AR
0. INFORMATION

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

POWER TRAIN

AXLE GP

1V-4945 AXLE GP-FIXED

1V-4946 WHEEL GP-FINAL DRIVE & BRAKE

1V-5669 WHEEL GP-FINAL DRIVE & BRAKE

#SEBP10790470

1V-4946: WHEEL GP-FINAL DRIVE & BRAKE

WHEEL GP-FINAL DRIVE & BRAKE

1V4946 FINAL DRIVE AND BRAKE WHEEL GROUP--2 Required
Serial No. 50W3668-Up
1V5669 Final Drive and Brake Wheel parts are shown on Page 143A

c224902 SEBP1079

1V4946 WHEEL GP-FINAL DRIVE & BRAKE Parts scheme

For full view, you need register

Parts for your 988B WHEEL LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	7D-4512	[22]	STUD 11.68 cm(4.60 in.) long
2.	2J-3507	[22]	NUT
3.	3K-5234	[22]	WASHER
4.	9F-2167	[1]	SCREW
5.	1V-7443	[1]	ADAPTER
6.	5B-3254	[1]	NUT
	4B-1040	[2]	WASHER
7.	1V-7439	[1]	TUBE ASSEM.
8.	3J-7352	[1]	CONNECTOR
	3J-7354	[1]	SEAL
9.	1V-5669 Y	[1]	WHEEL GROUP
			(Separate Illustration)
10.	9K-3186	[1]	SPACER
11.	8K-0099	[1]	GEAR (teeth)
12.	1T-0479	[1]	RING
13.	8M-0505	[1]	CONNECTOR
	3K-0360	[1]	SEAL
14.	1V-7440	[1]	TUBE ASSEM.
15.	7F-2050	[1]	NUT
	4H-1394	[2]	WASHER
16.	2P-1325	[1]	ELBOW
17.	1H-8278	[1]	SEAL
18.	0S-1594	[9]	BOLT
	5P-1075	[9]	WASHER
19.	1V-7444 C	[2]	PLATE
20.	4V-8884 C	[1]	PLATE
21.	0S-1618 C	[2]	BOLT
	3B-4505 C	[2]	LOCKWASHER
	5D-1753 C	[2]	WASHER
22.	4V-8886 C	[1]	PLATE ASSEM.
	C		INDICATES CHANGE
	Y		SEPARATE ILLUSTRATION

#SEBP10790471

1V-5669: WHEEL GP-FINAL DRIVE & BRAKE

WHEEL GP-FINAL DRIVE & BRAKE

1V5669 FINAL DRIVE AND BRAKE WHEEL GROUP
Serial No. 50W1 to 50W571 inclusive. Part of 1V4946 Final Drive and Brake Wheel
Group shown on Page 142. 1V5667 Service Brake parts are shown on Page 144

c224652 SEBP1079

1V5669 WHEEL GP-FINAL DRIVE & BRAKE Parts scheme

For full view, you need register

Parts for your 988B WHEEL LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	1V-4975 R	[1]	SPINDLE
2.	1V-5667 Y	[1]	BRAKE GROUP
			(Separate Illustration)
3.	8K-0069	[1]	SPACER
4.	1P-9594	[1]	CUP
	1P-9593	[1]	CONE
5.	4D-4510	[1]	SEAL GROUP
			(Includes)
	5P-4858 C	[2]	RING
6.	1V-5804	[1]	WHEEL ASSEM.
			(Includes)
7.	2P-1303	[34]	STUD
8.	9K-7807	[40]	STUD
9.	2D-6511	[1]	CUP
	2P-8353	[1]	CONE
10.	4D-3173	[4]	RETAINER
11.	0S-1621	[8]	BOLT
	4F-7356	[4]	LOCK
12.	9K-0100	[1]	GEAR (77 teeth)
13.	2V-4149	[1]	CARRIER
	8S-6251	[1]	SEAL
14.	9S-4181	[1]	PLUG
	7M-8485	[1]	SEAL
15.	8K-0003	[1]	RING
	8K-0066	[1]	SHIM 2.85 mm(.112 in.) thick
16.	1A-8537	[10]	BOLT
17.	5K-7696	[1]	PLUG
	3J-1907	[1]	SEAL
18.	8D-3844	[1]	PLATE
19.	8D-3883	[4]	BOLT
20.	2V-4150	[1]	COVER
	7S-8561	[1]	SEAL
21.	7B-3235	[6]	BOLT
	3B-4508	[6]	LOCKWASHER
22.	2J-3506	[34]	NUT
	2S-0115	[34]	WASHER
23.	2V-4148	[3]	SHAFT
	7H-0308	[3]	RING
24.	8K-0004	[3]	GEAR (28 teeth)
25.	8K-0067	[3]	SPACER
26.	5D-3632	[6]	ROLLER ASSEM.
27.	8D-3901	[6]	WASHER
28.	8K-0068	[1]	HUB ASSEM.
			(Includes)
29.	8K-0079 C	[1]	BUSHING
	R		REMFG PART MAY BE AVAILABLE
	Y		SEPARATE ILLUSTRATION
	C		INDICATES CHANGE

#SEBP10790472

1V-5669: WHEEL GP-FINAL DRIVE & BRAKE

WHEEL GP-FINAL DRIVE & BRAKE

1V5669 FINAL DRIVE AND BRAKE WHEEL GROUP
Serial No. 50W572 to 50W1557 and 50W1621-Up. Part of 1V4946 Final Drive and
Brake Wheel Group shown on Pages 142 & 142A. 1V5667 Service Brake parts are
shown on Page 144

c224653 SEBP1079

For full view, you need register

Parts for your 988B WHEEL LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	1V-4975 R	[1]	SPINDLE
2.	1V-5667 Y	[1]	BRAKE GROUP
			(Separate Illustration)
3.	5V-5856 C	[1]	SPACER
4.	1P-9594	[1]	CUP
	1P-9593	[1]	CONE
5.	4D-4510	[1]	SEAL GROUP
			(Includes)
	5P-4858 C	[2]	RING
6.	1V-5804	[1]	WHEEL ASSEM.
			(Includes)
	3V-7866 C	[1]	DOWEL
7.	2P-1303	[34]	STUD
8.	9K-7807	[40]	STUD
9.	2D-6511	[1]	CUP
	2P-8353	[1]	CONE
10.	4D-3173	[4]	RETAINER
11.	0S-1621	[8]	BOLT
	4F-7356	[4]	LOCK
12.	9K-0100	[1]	GEAR (77 teeth)
13.	2V-4149	[1]	CARRIER
	8S-6251	[1]	SEAL
14.	9S-4181	[1]	PLUG
	7M-8485	[1]	SEAL
15.	8K-0003	[1]	RING
	8K-0066	[1]	SHIM 2.85 mm(.112 in.) thick
16.	1A-8537	[10]	BOLT
17.	5K-7696	[1]	PLUG
	3J-1907	[1]	SEAL
18.	2G-4553 C	[1]	PLATE
19.	8D-3883	[4]	BOLT
20.	3V-5953 C	[1]	COVER
	7S-8561	[1]	SEAL
21.	7B-3235	[6]	BOLT
	3B-4508	[6]	LOCKWASHER
22.	2J-3506	[34]	NUT
	2S-0115	[34]	WASHER
23.	2V-4148	[3]	SHAFT
	7H-0308	[3]	RING
24.	8K-0004	[3]	GEAR (28 teeth)
25.	8K-0067	[3]	SPACER
26.	5D-3632	[6]	ROLLER ASSEM.
27.	8D-3901	[6]	WASHER
28.	8K-0068	[1]	HUB ASSEM.
			(Includes)
29.	8K-0079 C	[1]	BUSHING
	R		REMFG PART MAY BE AVAILABLE
	Y		SEPARATE ILLUSTRATION
	C		INDICATES CHANGE

#SEBP10790473

1V-5669: WHEEL GP-FINAL DRIVE & BRAKE

WHEEL GP-FINAL DRIVE & BRAKE

1V5669 FINAL DRIVE AND BRAKE WHEEL GROUP
Serial No. 50W1558 to 50W1620 inclusive. Part of 1V4946 Final Drive and Brake Wheel
Group shown on Page 142. 1V5667 Service Brake parts are shown on Page 144

c224654 SEBP1079

For full view, you need register

Parts for your 988B WHEEL LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	4V-6103 C	[1]	SPINDLE
2.	1V-5667 Y	[1]	BRAKE GROUP
			(Separate Illustration)
3.	4V-6102 C	[1]	SPACER
4.	1P-9594	[1]	CUP
	1P-9593	[1]	CONE
5.	4D-4510	[1]	SEAL GROUP
			(Includes)
	5P-4858 C	[2]	RING
6.	1V-5804	[1]	WHEEL ASSEM.
			(Includes)
	3V-7866	[1]	DOWEL
7.	2P-1303	[34]	STUD
8.	9K-7807	[40]	STUD
9.	2D-6511	[1]	CUP
	2P-8353	[1]	CONE
10.	4D-3173	[4]	RETAINER
11.	0S-1621	[8]	BOLT
	4F-7356	[4]	LOCK
12.	9K-0100	[1]	GEAR (77 teeth)
13.	2V-4149	[1]	CARRIER
	8S-6251	[1]	SEAL
14.	9S-4181	[1]	PLUG
	7M-8485	[1]	SEAL
15.	8K-0003	[1]	RING
	8K-0066	[1]	SHIM 2.85 mm(.112 in.) thick
16.	1A-8537	[10]	BOLT
17.	5K-7696	[1]	PLUG
	3J-1907	[1]	SEAL
18.	2G-4553	[1]	PLATE
19.	8D-3883	[4]	BOLT
20.	3V-5953	[1]	COVER
	7S-8561	[1]	SEAL
21.	7B-3235	[6]	BOLT
	3B-4508	[6]	LOCKWASHER
22.	2J-3506	[34]	NUT
	2S-0115	[34]	WASHER
23.	2V-4148	[3]	SHAFT
	7H-0308	[3]	RING
24.	8K-0004	[3]	GEAR (28 teeth)
25.	8K-0067	[3]	SPACER
26.	5D-3632	[6]	ROLLER ASSEM.
27.	8D-3901	[6]	WASHER
28.	8K-0068	[1]	HUB ASSEM.
			(Includes)
29.	8K-0079 C	[1]	BUSHING
	C		INDICATES CHANGE
	Y		SEPARATE ILLUSTRATION

#SEBP10790474

1V-5667: BRAKE GP-SERVICE

BRAKE GP-SERVICE

1V5667 SERVICE BRAKE GROUP
Serial No. 50W1 to 50W5832 inclusive
Part of 1V5669 Final Drive and Brake Wheel Group shown on Pages 143, 143A & 143B

c210013 SEBP1079

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Parts for your 988B WHEEL LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	4H-8380	[3]	PIN
2.	2A-1531	[34]	BOLT
	2M-0849	[34]	WASHER
3.	5D-6295	[1]	SEAL
4.	5D-6294	[1]	SEAL
5.	1V-6683	[1]	SLEEVE
6.	1V-6685	[1]	HOUSING
7.	5J-5793	[8]	BOLT
8.	4D-1577	[1]	SEAL
9.	9S-8008	[6]	PLUG
	3D-2824	[6]	SEAL
10.	6M-8252	[6]	SPRING
	1V-7403	[6]	GUIDE
11.	0S-1588	[2]	BOLT
12.	6M-9155	[6]	PIN
13.	5D-6329	[7]	DISC
14.	7D-7504	[8]	PLATE
15.	1V-5439	[1]	HOUSING
16.	9M-5892	[2]	SEAL
17.	1V-6642	[1]	PISTON

#SEBP10790475

1V-4941: DEMOUNTABLE RIM GROUP

DEMOUNTABLE RIM GROUP

1V4941 DEMOUNTABLE RIM GROUP--35 x 33 Tubeless Tires
Serial No. 50W1 to 4727 and 50W4729 to 50W4736 inclusive

c221160 SEBP1079

1V4941 DEMOUNTABLE RIM GROUP Parts scheme

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Parts for your 988B WHEEL LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	1V-7505	[1]	RIM ASSEM.
			(Includes)
2.	4V-7507 C	[1]	CONNECTOR
3.	4D-2004 C	[1]	VALVE GROUP
			(Includes)
	2D-2507	[1]	SPUD
	2D-2508	[1]	GROMMET
4.	2D-2509	[1]	NUT
5.	4D-3398	[1]	STEM ASSEM.
			(Includes)
	6F-3930	[1]	CORE
6.	9K-7951 C	[1]	CAP
7.	1V-7503	[2]	FLANGE
8.	9S-4183	[1]	PLUG
	3D-2824	[1]	SEAL
9.	3J-1086	[1]	RING
10.	1J-4246	[1]	SEAL
11.	3J-1085	[1]	BAND
12.	3D-5623	[1]	DRIVER
13.	2J-3506	[40]	NUT
	2S-0115	[40]	WASHER
14.	3V-8154 C	[1]	GUARD
15.	0S-0509 C	[2]	BOLT
	5P-1075 C	[2]	WASHER
	C		INDICATES CHANGE

#SEBP10790476

1V-5667: BRAKE GP-SERVICE

BRAKE GP-SERVICE

1V5667 SERVICE BRAKE GROUP
Serial No. 50W5833-Up. Part of 1V5669 Final Drive and Brake Wheel Group shown
on Page 143A

c301327 SEBP1079

For full view, you need register

Parts for your 988B WHEEL LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	4H-8380	[3]	PIN
2.	2A-1531	[34]	BOLT
	2M-0849	[34]	WASHER
3.	5D-6295	[1]	SEAL
4.	5D-6294	[1]	SEAL
5.	1V-6683	[1]	SLEEVE
6.	4V-7726 C	[1]	HOUSING
7.	5J-5793	[8]	BOLT
8.	4D-1577	[1]	SEAL
9.	9S-8008	[6]	PLUG
	3D-2824	[6]	SEAL
10.	6M-8252	[6]	SPRING
	1V-7403	[6]	GUIDE
11.	0S-1588	[2]	BOLT
12.	6M-9155	[6]	PIN
13.	5D-6329	[7]	DISC
14.	7D-7504	[8]	PLATE
15.	8V-2433 C	[1]	HOUSING
16.	9M-5892	[2]	SEAL
17.	4V-7725 C	[1]	PISTON
	C		INDICATES CHANGE

#SEBP10790477

5V-4560: RIM GP-DEMOUNTABLE

RIM GP-DEMOUNTABLE

5V4560 DEMOUNTABLE RIM GROUP--35 x 33 Tubeless Tires
Serial No. 50W4728 and 50W4737-Up

c176726 SEBP1079

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Parts for your 988B WHEEL LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	5V-4559	[1]	RIM ASSEM.
2.	3D-2824	[2]	SEAL
3.	5V-8927	[1]	VALVE ASSEM.
			(Includes)
4.	6F-3930	[1]	CORE
5.	9K-7951	[1]	CAP
6.	3D-5623	[1]	DRIVER
7.	1V-7503	[2]	FLANGE
8.	9S-8008	[1]	PLUG
9.	3J-1086	[1]	RING
10.	1J-4246	[1]	SEAL
11.	3J-1085	[2]	BAND
12.	2J-3506	[40]	NUT
	5P-8248	[40]	WASHER

#SEBP10790478

5V-6025: CARCASS AR

CARCASS AR

5V6025 CARCASS ARRANGEMENT--Clipped Grouser Beadless Tires
CANNOT BE USED WITH LOGGING ARRANGEMENT UNLESS RIM
REINFORCEMENT IS PROVIDED. AN ATTACHMENT

SEBP10790478 SEBP1079

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Parts for your 988B WHEEL LOADER:

CATERPILLAR SIS

Part No	Qty	Parts name
1R-0589 Y	[4]	RIM & CARCASS ARRANGEMENT
		- OR -
1R-0615 Y	[4]	RIM & CARCASS ARRANGEMENT
2V-9157 Y	[2]	SHOE GROUP L.H.
2V-9158 Y	[2]	SHOE GROUP R.H.
2V-5265 Y	[1]	FRONT FENDER GROUP
2V-6765	[1]	FRAME ASSEMBLY
		- OR -
8V-2984	[1]	FRAME ASSEMBLY
5P-3479	[44]	STUD
5P-0496	[6]	STUD
4K-8479	[3]	STUD
	[160]	NUT
5P-6652	[160]	WASHER
3V-8087	[12]	GUARD ASSEMBLY
0S-1594	[36]	BOLT
5M-2894	[36]	WASHER
1V-8292	[4]	FILM CAUTION AIR INFLATION
1V-8293	[1]	FILM CAUTION BEADLESS TIRES
Y		SEPARATE ILLUSTRATION

#SEBP10790479

8V-1848: CARCASS AR-FRONT

CARCASS AR-FRONT

8V1848 FRONT CARCASS ARRANGEMENT--Beadless Tires
CANNOT BE USED WITH 3V6660 OR 7V5189 LOGGING ARRANGEMENTS
AN ATTACHMENT

SEBP10790479 SEBP1079

For full view, you need register

Parts for your 988B WHEEL LOADER:

CATERPILLAR SIS

Part No	Qty	Parts name
Y	[2]	RIM AND CARCASS ARRANGEMENT
		- OR -
1R-0615 Y	[2]	RIM AND CARCASS ARRANGEMENT
1V-6244 Y	[2]	TRACK SHOE GROUP
2V-5265 Y	[1]	FRONT FENDER GROUP
2V-6765	[1]	FRAME ASSEMBLY
		- OR -
8V-2984	[1]	FRAME ASSEMBLY
5P-3479	[44]	STUD
5P-0496	[6]	STUD
4K-8479	[3]	STUD
2J-3506	[80]	NUT
5P-6652	[80]	WASHER
3V-8087	[6]	GUARD ASSEMBLY
0S-1594	[18]	BOLT
5M-2894	[18]	WASHER
1V-8293	[1]	FILM
		TO BE PLACED ON PLATFORM OVER THE HYDRAULIC TANK TO THE LEFT OF THE LADDER
1V-8292	[2]	FILM
		TO BE PLACED ON THE FRONT RIMS BELOW THE AIR VALVE BETWEEN THE TWO ANGLES THAT PROTECT THE STEM
Y		SEPARATE ILLUSTRATION