7V367 PILOT LINES GROUP--Part 2 of 2--Type 2 Serial No. 50W5036-Up 988B WHEEL LOADER

HYDRAULIC SYSTEM

LINES GP-PILOT

0. 7V-0367 LINES GP-P

LINES GP-HYDRAULIC

1. 1V-4968 LINES GP-P
2. 1V-4968 LINES GP-P
3. 1V-4968 LINES GP-P
4. 1V-4968 LINES GP-P

VALVE GP-RELIEF

5. 8J-7405 VALVE GP-R

FILTER GP

6. 6P-4603 FILTER GP-

LINES GP-CYLINDER

7. 1V-4965 LINES GP-T
8. 1V-4965 LINES GP-T
9. 1V-4965 LINES GP-C
0. INFORMATION

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

HYDRAULIC SYSTEM

LINES GP-PILOT

1V-4967 PILOT LINES GROUP

7V-0367 LINES GP-PILOT

#SEBP10790760

7V-0367: LINES GP-PILOT

LINES GP-PILOT

7V367 PILOT LINES GROUP--Part 2 of 2--Type 2
Serial No. 50W5036-Up

c234489 SEBP1079

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Parts for your 988B WHEEL LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	9M-5711	[2]	PLUG
2.	7V-0542	[2]	HOSE ASSEM.
			(Each Includes)
	2P-5943 H		HOSE 76.4 in. (194 cm)
	8S-6417	[1]	COUPLING ASSEM. (straight)
3.	1P-9919	[1]	COUPLING ASSEM. (45 degrees)
4.	4S-5414	[2]	SLEEVE
5.	7V-0345	[1]	CLAMP
6.	0S-1595	[2]	BOLT
	1D-4719	[2]	NUT
	5P-1076	[2]	WASHER
7.	7K-1181	[2]	STRAP
8.	2V-5276	[5]	HOSE ASSEM.
			(Each Includes)
	2P-5943 H		HOSE 67.73 in.(171 cm)
9.	1P-9919	[2]	COUPLING ASSEM. (45 degrees)
10.	4S-5414	[2]	SLEEVE
11.	5V-8986	[1]	TUBE ASSEM.
12.	3K-0360	[4]	SEAL
13.	8J-8796	[1]	VALVE GROUP
			(Includes)
	3K-0360	[1]	SEAL
14.	5V-8987	[1]	TUBE ASSEM.
15.	8M-0505	[1]	CONNECTOR
16.	5V-8969	[1]	MANIFOLD
17.	7D-9984	[2]	ELBOW
18.	0S-1620	[4]	BOLT
	5P-8245	[4]	WASHER
19.	7V-0491	[1]	BRACKET
20.	7V-0581	[1]	HOSE ASSEM.
			(Includes)
	2P-5943		HOSE 69.3 in.(176 cm)
	1P-9919	[1]	COUPLING ASSEM. (45 degrees)
21.	4S-5414	[2]	SLEEVE
22.	2P-1462	[1]	COUPLING ASSEM. (90 degrees)
	H		ORDER BY THE INCH

#SEBP10790761

1V-4968: LINES GP-PUMP-HYDRAULIC

LINES GP-PUMP-HYDRAULIC

1V4968 HYDRAULIC PUMP LINES GROUP--Part 1 of 2
Serial No. 50W1 to 50W2314 inclusive

c222631 SEBP1079

1V4968 LINES GP-PUMP-HYDRAULIC Parts scheme

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Parts for your 988B WHEEL LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	1V-6442	[1]	TUBE ASSEM.
2.	3V-5766	[1]	HOSE ASSEM.
			(Includes)
	5P-0183 H		HOSE 88 cm(34.65 in.)
	3S-9329	[1]	STEM ASSEM. (45 degrees)
3.	3S-8330 C	[2]	SLEEVE
4.	3S-9327	[1]	STEM ASSEM. (22.5 degrees)
5.	4J-0524	[4]	SEAL
6.	3V-5723	[1]	TUBE ASSEM.
	1P-3707	[1]	SEAL
7.	0S-1621 C	[5]	BOLT
8.	2V-2118	[1]	HOSE ASSEM.
			(Includes)
	5P-0183 H		HOSE 135.5 cm(53.35 in.)
	3S-9328	[1]	STEM ASSEM. (30 degrees)
9.	3S-9326	[1]	STEM ASSEM. (straight)
10.	3S-8330	[2]	SLEEVE
11.	5P-5987 J		GUARD 1.25 m(49.25 in.)
12.	1P-4579	[8]	FLANGE
13.	0S-1585 C	[17]	BOLT
14.	4B-4280 C	[16]	WASHER
15.	2V-6351	[1]	CLIP
	2V-6353	[1]	CLIP
16.	3B-4508 C	[2]	LOCKWASHER
17.	1V-3876	[2]	STRIP ASSEM.
	1V-3878	[2]	CLAMP
18.	0S-1589	[4]	BOLT
	3B-4510	[4]	LOCKWASHER
19.	2H-3935	[1]	SEAL
20.	2V-6354	[1]	TUBE ASSEM.
21.	5P-1269 CH		HOSE 12.7 cm(5 in.)
22.	5P-1717	[4]	CLAMP
23.	1V-6441	[1]	TUBE
24.	5P-1269 CH		HOSE 12.7 cm(5 in.)
25.	2M-0849 C	[2]	WASHER
26.	3V-7868 C	[1]	BRACKET
27.	3V-3306 C	[3]	WASHER
28.	1D-4719 C	[1]	NUT
29.	8J-3738 C	[1]	VALVE
	3D-2824 C	[1]	SEAL
	H		ORDER BY THE CENTIMETER
	J		ORDER BY THE METER
	C		INDICATES CHANGE

#SEBP10790762

1V-4968: LINES GP-PUMP-HYDRAULIC

LINES GP-PUMP-HYDRAULIC

1V4968 HYDRAULIC PUMP LINES GROUP--Part 2 of 2
Serial No. 50W1 to 50W2314 inclusive
3G839 Oil Filter parts are shown on Page 166D

c221158 SEBP1079

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Parts for your 988B WHEEL LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	0S-1573	[2]	BOLT
2.	3B-4508	[11]	LOCKWASHER
3.	1V-9741	[1]	TUBE ASSEM.
	5H-8848	[1]	SEAL
4.	2V-6352	[1]	CLIP
	2V-6350 C	[1]	CLIP (tab)
5.	0S-1587 C	[15]	BOLT
6.	1D-4719	[4]	NUT
7.	2M-0849	[7]	WASHER
8.	3G-0839 Y	[1]	FILTER GROUP
			(Separate Illustration)
9.	7B-3235	[2]	BOLT
10.	7D-8368	[1]	HOSE
11.	5P-0598 C	[2]	CLAMP
12.	9K-5567	[1]	TUBE ASSEM.
	2H-6338	[2]	SEAL
13.	0S-1589	[3]	BOLT
14.	4J-2677 C	[8]	WASHER
15.	1D-4593	[1]	BOLT
16.	8S-9092	[4]	BOLT
17.	4B-4280	[8]	WASHER
18.	3V-7850 C	[1]	TUBE ASSEM.
19.	1P-3708 C	[2]	SEAL
20.	6H-1717	[2]	BOLT
21.	0S-1595	[5]	BOLT
22.	2V-6583	[1]	BRACKET
23.	3V-7849 C	[1]	TUBE ASSEM.
24.	0S-1581	[2]	BOLT
	5P-1075	[2]	WASHER
25.	2V-0600	[2]	CLAMP
26.	1V-9692	[1]	BRACKET ASSEM.
	C		INDICATES CHANGE
	Y		SEPARATE ILLUSTRATION

#SEBP10790763

1V-4968: LINES GP-PUMP-HYDRAULIC

LINES GP-PUMP-HYDRAULIC

1V4968 HYDRAULIC PUMP LINES GROUP--Part 1 of 2
Serial No. 50W2315-Up

c234501 SEBP1079

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Parts for your 988B WHEEL LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	1V-6442	[1]	TUBE ASSEM.
2.	3V-5766	[1]	HOSE ASSEM.
			(Includes)
	8S-8220 CH		HOSE 34.65 in.(88 cm)
	3S-9329	[1]	STEM ASSEM. (45 degrees)
3.	3S-8330	[4]	SLEEVE
4.	3S-9327	[1]	STEM ASSEM. (22.5 degrees)
5.	4J-0524	[4]	SEAL
6.	4V-5412 C	[1]	TUBE ASSEM.
	1P-3707	[1]	SEAL
7.	0S-1621	[5]	BOLT
8.	4V-5404 C	[1]	HOSE ASSEM.
			(Includes)
	8S-8220 H		HOSE 51.37 in.(130 cm)
	3S-9328	[1]	STEM ASSEM. (30 degrees)
9.	3S-9326	[1]	STEM ASSEM. (straight)
10.	3S-8330	[2]	SLEEVE
11.	5P-7536 J		GUARD 120 cm(47.28 in.)
12.	1P-4579	[8]	FLANGE
13.	0S-1585	[16]	BOLT
14.	5P-8245 C	[16]	WASHER
15.	2V-6351	[1]	CLIP
	2V-6353	[1]	CLIP
16.	3B-4508	[2]	LOCKWASHER
17.	1V-3876	[2]	STRIP ASSEM.
	1V-3878	[2]	CLAMP
18.	0S-1589	[4]	BOLT
	3B-4510	[4]	LOCKWASHER
19.	2H-3935	[1]	SEAL
20.	2V-6354	[1]	TUBE ASSEM.
21.	8V-3070 C	[2]	HOSE
22.	5P-1717	[4]	CLAMP
23.	1V-6441	[1]	TUBE
24.	2B-0947	[1]	BOLT
25.	2M-0849	[2]	WASHER
26.	3V-7868	[1]	BRACKET
27.	3V-3306	[3]	WASHER
28.	1D-4719	[1]	NUT
29.	8J-3738	[1]	VALVE
	3D-2824	[1]	SEAL
	H		ORDER BY THE INCH
	J		ORDER BY THE CENTIMETER
	C		INDICATES CHANGE

#SEBP10790764

1V-4968: LINES GP-PUMP-HYDRAULIC

LINES GP-PUMP-HYDRAULIC

1V4968 HYDRAULIC PUMP LINES GROUP--Part 2 of 2
Serial No. 50W2315-Up
3G839 Filter parts are shown on Page 167

c234502 SEBP1079

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Parts for your 988B WHEEL LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	0S-1573	[2]	BOLT
2.	3B-4508	[11]	LOCKWASHER
3.	1V-9741	[1]	TUBE ASSEM.
	5H-8848	[1]	SEAL
4.	2V-6352	[1]	CLIP
	2V-6350 C	[1]	CLIP (tab)
5.	0S-1587 C	[13]	BOLT 4.44 cm(1.75 in.)
6.	1D-4719 C	[1]	NUT
7.	2M-0849	[7]	WASHER
8.	3G-0839 Y	[1]	FILTER GROUP
			(Separate Illustration)
9.	8M-2530 C	[2]	BOLT
10.	7D-8368	[1]	HOSE
11.	5P-0598	[2]	CLAMP
12.	9K-5567	[1]	TUBE ASSEM.
	2H-6338	[2]	SEAL
13.	8S-2332 C	[3]	BOLT
14.	4J-2677	[8]	WASHER
15.	1D-4593	[1]	BOLT
16.	6M-9149 C	[4]	BOLT
17.	4B-4280	[8]	WASHER
18.	3V-7850	[1]	TUBE ASSEM.
19.	1P-3708	[2]	SEAL
20.	6H-1717	[2]	BOLT
21.	0S-1595	[5]	BOLT
22.	2V-6583	[1]	BRACKET
23.	3V-7849	[1]	TUBE ASSEM.
24.	0S-1591 C	[2]	BOLT
	5M-2894 C	[2]	WASHER
25.	2V-0600	[2]	CLAMP
26.	1V-9692	[1]	BRACKET ASSEM.
27.	2B-0947 C	[2]	BOLT 5.74 cm (2.25 in.)
	C		INDICATES CHANGE
	Y		SEPARATE ILLUSTRATION

#SEBP10790765

8J-7405: VALVE GP-RELIEF

VALVE GP-RELIEF

8J7405 RELIEF VALVE GROUP
Part of 1V4967 Pilot Lines Group shown on Pages 222 and 224

c210758 SEBP1079

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Parts for your 988B WHEEL LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	0T-0768	[1]	BOLT
2.	3B-4507	[3]	LOCKWASHER
3.	3H-0107	[2]	SEAL
4.	4J-5267	[2]	SEAL
5.	5H-6005	[1]	SEAL
6.	7L-8695	[1]	SPRING
7.	8J-8838	[1]	VALVE GROUP
8.	9S-8002	[1]	PLUG
9.	5P-1893 C	[2]	BOLT
10.	4F-7115	[1]	SPRING
11.	0S-1588	[2]	BOLT
	3B-4506	[2]	LOCKWASHER
12.	3J-7470	[5]	SHIM 1.22 mm(.048 in.) thick
	3J-7473	[4]	SHIM 0.13 mm(.005 in.) thick
13.	3H-6249	[1]	RETAINER
14.	8J-7403	[1]	VALVE GROUP
15.	3J-7354	[1]	SEAL
	C		INDICATES CHANGE

#SEBP10790766

6P-4603: FILTER GP-TRANSMISSION

FILTER GP-TRANSMISSION

6P4603 FILTER GROUP--2 Required
Note: One Required for Transmission and one required for the pilot valve in the
Hydraulic System

c233925 SEBP1079

6P4603 FILTER GP-TRANSMISSION Parts scheme

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Parts for your 988B WHEEL LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	3D-2824	[1]	SEAL
2.	3T-0688 C	[1]	SPOOL
3.	9M-1986 C	[1]	SPRING
4.	9S-4191	[2]	PLUG
	3J-1907	[2]	SEAL
5.	6P-4227	[1]	BASE
6.	9M-9740	[1]	ELEMENT ASSEM.
			-OR-
	1U-2093 CH	[1]	ELEMENT
			(For use with fire resistant hyd. systems)
7.	3S-8652	[1]	SPRING
8.	7S-6745	[1]	RETAINER
9.	2J-6356	[1]	RING
10.	3P-0887	[1]	HOUSING ASSEM.
11.	2S-8439	[1]	SEAL
	C		INDICATES CHANGE
	H		NOT PART OF 6P4603 FILTER GROU

#SEBP10790767

1V-4965: LINES GP-TILT CYLINDER

LINES GP-TILT CYLINDER

1V4965 TILT CYLINDER LINES GROUP--Part 1 of 2
Serial No. 50W1 to 50W453 inclusive

c166154 SEBP1079

1V4965 LINES GP-TILT CYLINDER Parts scheme

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Parts for your 988B WHEEL LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	1D-4719	[4]	NUT
	4B-4280	[4]	WASHER
2.	3B-4508	[16]	LOCKWASHER
3.	2V-6574	[2]	BRACKET ASSEM.
4.	0S-1621	[4]	BOLT
5.	1V-8109	[2]	BLOCK
6.	1V-2610	[1]	TUBE ASSEM. (R.H.)
			(Includes)
7.	9S-4191	[2]	PLUG
	7M-8485	[2]	SEAL
8.	1V-2611	[1]	TUBE ASSEM. (L.H.)
			(Includes)
9.	9S-4191	[2]	PLUG
	7M-8485	[2]	SEAL
10.	0T-0318	[2]	BOLT
11.	3B-4507	[10]	LOCKWASHER
12.	4B-4279	[18]	WASHER
13.	1V-2568	[1]	ANGLE (R.H.)
14.	1D-4639	[4]	BOLT
	5F-6562	[4]	WASHER
15.	1P-4578	[8]	FLANGE
16.	0T-0772	[16]	BOLT
17.	1P-3704 C	[2]	SEAL
18.	1D-4556	[8]	BOLT
19.	1V-6908	[1]	MANIFOLD
20.	1P-3706	[2]	SEAL
21.	0S-1585	[8]	BOLT
22.	1V-6909	[1]	MANIFOLD
	C		INDICATES CHANGE

#SEBP10790768

1V-4965: LINES GP-TILT CYLINDER

LINES GP-TILT CYLINDER

1V4965 TILT CYLINDER LINES GROUP--Part 2 of 2
Serial No. 50W1 to 50W453 inclusive

c210016 SEBP1079

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Parts for your 988B WHEEL LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	1P-4577	[24]	FLANGE
2.	3B-1915	[48]	BOLT
	4B-4278	[48]	WASHER
3.	9S-4191	[2]	PLUG
	3J-1907	[2]	SEAL
4.	1V-2567	[1]	ANGLE
5.	1V-8107	[2]	HOSE ASSEM.
			(Each Includes)
	5P-0181 H		HOSE 131.50 cm(51.77 in.)
	3S-8496	[1]	STEM ASSEM. (straight)
6.	3S-7252	[2]	SLEEVE
7.	5P-5976 J		GUARD 1.23 m(48.23 in.)
8.	7S-0575	[1]	STEM ASSEM. (90 degrees)
9.	1V-8104	[2]	HOSE ASSEM.
			(Each Includes)
	5P-0181 H		HOSE 126 cm(49.61 in.)
	3S-8496	[1]	STEM ASSEM. (straight)
10.	3S-7252	[2]	SLEEVE
11.	5P-5976 J		GUARD 1.17 m(46.06 in.)
12.	7S-0575	[1]	STEM ASSEM.
13.	1V-8106	[2]	HOSE ASSEM.
			(Each Includes)
	5P-0181		HOSE 64 cm(25.20 in.)
	3S-8496	[1]	STEM ASSEM.
14.	3S-8499	[1]	STEM ASSEM.
15.	3S-7252	[2]	SLEEVE
16.	1V-8105	[2]	HOSE ASSEM.
			(Each Includes)
	5P-0181		HOSE 70 cm(27.56 in.)
17.	3S-8501	[1]	STEM ASSEM. (60 degrees)
18.	3S-7252	[2]	SLEEVE
19.	3S-8496	[1]	STEM ASSEM. (straight)
20.	4J-0520	[12]	SEAL
21.	4J-0522	[4]	SEAL
	H		ORDER BY THE CENTIMETRE
	J		ORDER BY THE METRE

#SEBP10790769

1V-4965: LINES GP-CYLINDER

LINES GP-CYLINDER

1V4965 TILT CYLINDER LINES GROUP--Part 1 of 2
Serial No. 50W454 to 50W3433 inclusive

c166155 SEBP1079

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Parts for your 988B WHEEL LOADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	1D-4719	[4]	NUT
	4B-4280	[4]	WASHER
2.	3B-4508	[16]	LOCKWASHER
3.	2V-6574	[2]	BRACKET ASSEM.
4.	0S-1621	[4]	BOLT
5.	1V-8109	[2]	BLOCK
6.	3V-7830 C	[1]	TUBE ASSEM. (R.H.)
			(Includes)
7.	9S-4181	[2]	PLUG
	7M-8485	[2]	SEAL
8.	3V-7831 C	[1]	TUBE ASSEM. (L.H.)
			(Includes)
9.	9S-4181	[2]	PLUG
	7M-8485	[2]	SEAL
10.	0T-0318	[2]	BOLT
11.	3B-4507	[10]	LOCKWASHER
12.	4B-4279	[18]	WASHER
13.	3V-7844 C	[1]	BRACKET (R.H.)
	3V-7845 C	[1]	BRACKET (L.H.)
14.	1D-4641 C	[4]	BOLT
	5F-6562	[4]	WASHER
15.	1P-4573	[8]	FLANGE
16.	0T-0772	[16]	BOLT
17.	1P-3704 C	[2]	SEAL
18.	1D-4556	[8]	BOLT
19.	1V-6908	[1]	MANIFOLD
20.	1P-3706	[2]	SEAL
21.	0S-1585	[8]	BOLT
22.	1V-6909	[1]	MANIFOLD
23.	3K-5234 C	[4]	WASHER
	C		INDICATES CHANGE