8K2629 PUMP LINES GROUP--Part 4 of 4 Serial No. 83X431--Up 8J7390 and 9J1212 Filter and 8J8578 Valve parts are shown on Pages 156, 157 and 165 235

HYDRAULIC SYSTEM

LINES GP-PUMP

0. 8K-2629 LINES GP-P

VALVE GP-RELIEF

1. 8J-2057 VALVE GP-P
2. 9J-3024 VALVE GP-R

VALVE GP-COMBINATION

3. 9J-0782 VALVE GP-C

VALVE GP-PRESSURE REDUCING

4. 9J-0785 VALVE GP-R
5. 8J-8578 VALVE GP-R

PUMP GP

6. 8J-1905 PUMP GP-PI
7. 8J-1905 PUMP GP-PI

OPERATOR STATION

CONTROL GP-HYDRAULIC

8. 8J-6899 HEAD GP-PU

HYDRAULIC SYSTEM

VALVE GP-SERVO

9. 3G-3926 VALVE GP-S
0. INFORMATION

EXCAVATOR 235 EXCAVATOR 83X
235 EXCAVATOR 83X00001-00443 (MACHINE) POWERED BY 3306 ENGINE HEBP1217 235 83X (1979)

HYDRAULIC SYSTEM

LINES GP-PUMP

8K-2629 LINES GP-PUMP

#HEBP12170300

8K-2629: LINES GP-PUMP

LINES GP-PUMP

8K2629 PUMP LINES GROUP--Part 4 of 4
Serial No. 83X431--Up
8J7390 and 9J1212 Filter and 8J8578 Valve parts are shown on
Pages 156, 157 and 165

c231497 HEBP1217

For full view, you need register

Parts for your 235 EXCAVATOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	0S-1594	[6]	BOLT
2.	3B-4506	[14]	LOCKWASHER
3.	5M-2894	[6]	WASHER
4.	0S-1588	[4]	BOLT
	1D-4717	[4]	NUT
5.	9K-9853	[1]	BRACKET
6.	030-7935	[2]	CONNECTOR
7.	7M-8485	[2]	SEAL
8.	9K-9857	[1]	TUBE ASSEM.
9.	4B-4278	[2]	WASHER
10.	9S-1350	[2]	CLIP
11.	8J-7390 Y	[1]	FILTER GROUP
12.	8S-9089 C	[4]	BOLT
	2H-3788	[4]	NUT
13.	9S-8896	[1]	CAP
14.	8K-3702	[1]	TUBE ASSEM.
15.	8J-8578 Y	[1]	VALVE GROUP
16.	0S-1619	[2]	BOLT
17.	030-7947	[1]	ELBOW
18.	3J-1907	[6]	SEAL
19.	8K-3717	[1]	TUBE ASSEM.
20.	1V-1727	[1]	BRACKET
21.	2V-0533	[1]	MANIFOLD
22.	0L-1351	[2]	BOLT
23.	2R-6806	[2]	CONNECTOR
24.	1V-1774	[1]	HOSE ASSEM. 71.1 cm(28 in.)
25.	8B-2377	[2]	BOLT
	7H-8909	[2]	NUT
	4B-4276	[2]	WASHER
26.	9K-9859	[1]	TUBE ASSEM.
27.	2R-6276	[3]	CONNECTOR
28.	3D-2824	[3]	SEAL
29.	9K-9861	[1]	SPACER
30.	1P-5767	[4]	FLANGE
	1P-3704	[2]	SEAL
31.	2H-6488	[2]	BOLT
32.	3B-4508	[4]	LOCKWASHER
33.	9S-4191	[1]	PLUG
34.	6K-5291	[1]	CLIP
35.	030-7947	[2]	ELBOW
36.	9J-1212 Y	[1]	FILTER GROUP
37.	0S-1587	[2]	BOLT
38.	3V-5223	[1]	TUBE ASSEM.
39.	9J-4799	[1]	VALVE ASSEM.
	3J-7354	[1]	SEAL
40.	6K-5290	[1]	BRACKET
41.	7D-0978	[1]	TEE
	C		INDICATES CHANGE
	Y		SEPARATE ILLUSTRATION

#HEBP12170301

8J-2057: VALVE GP-PITCH RELIEF

VALVE GP-PITCH RELIEF

8J2057 RELIEF VALVE GROUP
Part of 8K2629 Pump Lines Group shown on Page 159

c163386 HEBP1217

8J2057 VALVE GP-PITCH RELIEF Parts scheme

For full view, you need register

Parts for your 235 EXCAVATOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	0T-0768	[1]	BOLT
2.	3B-4507	[3]	LOCKWASHER
3.	4J-8996	[2]	SEAL
4.	4J-5267	[2]	SEAL
5.	5H-6005	[1]	SEAL
6.	7L-8695 C	[1]	SPRING
7.	3J-7354 C	[1]	SEAL
8.	8J-8838 C	[1]	VALVE GROUP
9.	5P-1893 C	[2]	BOLT
10.	4F-7115	[1]	SPRING
11.	0S-1588	[2]	BOLT
	3B-4506	[2]	LOCKWASHER
12.	3J-7473	[4]	SHIM .127 mm(.005 in.) thick
	3J-7470 C	[5]	SHIM 1.2192 mm(.048 in)thick
13.	3H-6249	[1]	RETAINER
14.	8J-2056	[1]	VALVE GROUP
15.	9S-8002 C	[1]	PLUG
	C		INDICATES CHANGE

#HEBP12170302

9J-3024: VALVE GP-RELIEF

VALVE GP-RELIEF

9J3024 RELIEF VALVE GROUP
Part of 9J782 Combination Valve Group shown on Page 164

c226698 HEBP1217

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Parts for your 235 EXCAVATOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	9S-8001	[1]	PLUG
	4J-7533	[1]	SEAL
2.	9S-8002	[5]	PLUG
	3J-7354	[5]	SEAL
3.	8J-6152	[2]	STOP
4.	5J-2722	[2]	SHIM 1.22 cm (.048 in.) thick
	5J-2721	[19]	SHIM .014 cm (.005 in.) thick
5.	8J-2304	[1]	VALVE GROUP
6.	0L-1352	[4]	BOLT 8.25cm(3.25 in.)long
	3B-4506	[4]	LOCKWASHER
			- OR -
	0S-1619 C	[4]	BOLT 7.62 cm(3 in.)long
7.	9S-8005	[2]	PLUG
8.	3K-0360	[3]	SEAL
9.	2H-6488	[2]	BOLT 12.7 cm(5 in.)long
	3B-4508	[2]	LOCKWASHER
			- OR -
	2B-2006 C	[2]	BOLT 12.06 cm(4.75 in.)long
10.	8J-2300	[1]	VALVE GROUP
11.	3H-7675	[1]	SPRING
12.	9S-8004	[1]	PLUG
	3J-1907	[1]	SEAL
13.	5J-4571	[2]	SPRING
14.	4J-0519	[2]	SEAL
15.	5J-0901	[2]	VALVE
16.	4J-5309	[1]	SEAL
17.	9S-4187	[1]	PLUG
18.	8J-2307	[1]	VALVE
19.	4J-0523	[1]	SEAL
20.	2J-0075	[1]	SPRING
21.	4J-5573	[1]	SEAL
22.	4J-0522	[1]	SEAL
23.	3J-3435	[1]	BODY GROUP
24.	8F-9206	[1]	SEAL
	C		INDICATES CHANGE

#HEBP12170303

9J-0782: VALVE GP-COMBINATION

VALVE GP-COMBINATION

9J782 COMBINATION VALVE GROUP
Part of 8K2629 Pump Lines Group shown on Page 159
9J3024 and 9J785 Valve parts are shown on Pages 163 and 164

c118680 HEBP1217

9J0782 VALVE GP-COMBINATION Parts scheme

For full view, you need register

Parts for your 235 EXCAVATOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	9J-0785 Y	[1]	VALVE GROUP
			(Separate Illustration)
2.	9J-0775	[1]	VALVE GROUP
3.	1J-8960	[2]	SPRING
4.	2S-4078	[2]	SEAL
5.	9S-8010	[2]	PLUG
6.	9J-3024 Y	[1]	VALVE GROUP
			(Separate Illustration)
7.	9S-8005	[1]	PLUG
	3K-0360	[1]	SEAL
8.	9S-8001	[1]	PLUG
	4J-7533	[1]	SEAL
	Y		SEPARATE ILLUSTRATION

#HEBP12170304

9J-0785: VALVE GP-REDUCING

VALVE GP-REDUCING

9J785 REDUCING VALVE GROUP
Part of 9J782 Combination Valve Group

c231686 HEBP1217

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Parts for your 235 EXCAVATOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	8F-6419	[4]	BOLT
2.	9J-0786	[1]	VALVE GROUP
3.	9J-0781	[1]	COVER
4.	9J-0789	[4]	PISTON
5.	4J-5309	[6]	SEAL
6.	9J-0788	[1]	SLUG
7.	8F-6711	[2]	SEAL
8.	9S-4191	[1]	PLUG
	3J-1907	[1]	SEAL

#HEBP12170305

8J-8578: VALVE GP-REDUCING

VALVE GP-REDUCING

8J8578 REDUCING VALVE GROUP
Part of 8K2629 Pump Lines Group shown on Page 161

c231706 HEBP1217

For full view, you need register

Parts for your 235 EXCAVATOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	3G-6903 C	[1]	SLUG
2.	3J-1907	[1]	SEAL
3.	0S-1618	[2]	BOLT
4.	8J-2055	[1]	COVER
5.	2H-3932	[1]	SEAL
6.	9S-8004	[1]	PLUG
7.	9J-7210 C	[1]	PLUNGER
8.	8J-8575	[1]	RETAINER
9.	9J-7211 C	[1]	PLUG
10.	3S-4506 C	[1]	LOCK
11.	1B-4203 C	[1]	NUT
12.	6J-3134 C	[1]	SEAL
13.	9S-8001	[5]	PLUG
	4J-7533	[5]	SEAL
14.	8J-8574	[1]	SPRING
15.	4F-7952	[1]	SEAL
16.	4B-4158 C	[1]	SCREW
17.	9S-8005	[1]	PLUG
18.	3K-0360	[2]	SEAL
19.	1A-2029	[2]	BOLT
20.	3G-5748 C	[1]	VALVE GROUP
21.	2H-5001	[1]	SEAL
22.	8J-8577	[1]	VALVE GROUP
	C		INDICATES CHANGE

#HEBP12170306

8J-1905: PUMP GP-PISTON

PUMP GP-PISTON

8J1905 SLIPPER PISTON PUMP GROUP--2 Required--Part 1 of 2
8J6899 Pump Control Head parts are shown on Page 168

c231498 HEBP1217

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Parts for your 235 EXCAVATOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	2P-9703	[1]	PLATE
2.	4B-4158	[4]	SCREW
3.	3P-1210	[1]	CONE
4.	2H-6488	[4]	BOLT
5.	3B-4508	[10]	LOCKWASHER
6.	8J-6899 Y	[1]	HEAD GROUP
			(Separate Illustration)
7.	9J-3526 R	[1]	PLATE
8.	8J-0240	[1]	GASKET
9.	0S-1573	[4]	BOLT
10.	034-4160	[8]	BOLT
11.	3G-5750 C	[2]	BEARING
12.	8J-0218	[6]	SHIM .13 mm(.005 in.) thick
	8J-0217	[4]	SHIM .06 mm(.002 in.) thick
13.	3G-4779 C	[1]	PLATE
14.	1D-4572	[2]	BOLT
15.	5B-5821	[2]	DOWEL
16.	9M-1974	[1]	WASHER
17.	3G-3150	[1]	PLATE
18.	8J-6897	[9]	PISTON ASSEM.
19.	8J-2043	[1]	SPRING
20.	9J-8667 R	[1]	BARREL ASSEM.
21.	8J-0237	[2]	SPACER
22.	1K-6985	[1]	RING
	R		REMFG PART MAY BE AVAILABLE
	Y		SEPARATE ILLUSTRATION
	C		INDICATES CHANGE

#HEBP12170307

8J-1905: PUMP GP-PISTON

PUMP GP-PISTON

8J1905 SLIPPER PISTON PUMP GROUP--2 Required--Part 2 of 2

c231499 HEBP1217

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Parts for your 235 EXCAVATOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	8J-7336	[2]	LINK
2.	2J-0157	[2]	SEAL
3.	6F-8205 C	[3]	WASHER .559 mm(.022 in.) thick
	6H-0199 C	[1]	WASHER 2.77 mm(.109 in.) thick
	5J-9101 C	[1]	WASHER .254 mm(.010 in.) thick
4.	8J-1603	[1]	BOLT
5.	8J-0219	[1]	BOLT
			- OR -
	3G-6019 C	[1]	BOLT
	1D-5121 C	[1]	NUT
6.	8J-7333	[2]	INSERT
7.	8J-6276	[2]	RETAINER
8.	1S-8517	[2]	RING
9.	9S-8008	[3]	PLUG
	3D-2824	[3]	SEAL
10.	9M-2092	[2]	SEAL
11.	8J-0123	[2]	COVER
12.	6S-2827	[2]	CONE
13.	0S-1588	[14]	BOLT
	3B-4506	[14]	LOCKWASHER
14.	8J-0220	[4]	SHIM .127 mm(.005 in.) thick
	8J-0221	[4]	SHIM .05 mm(.002 in.) thick
15.	1U-1655 C	[2]	SEAL
16.	7H-2444	[2]	SEAL
17.	8J-6802	[1]	SHAFT
18.	7J-8893	[1]	CONE
19.	9J-6403	[1]	RETAINER
	6D-7889	[2]	SEAL
20.	6S-2826	[2]	CUP
21.	5B-5821	[1]	DOWEL
22.	9J-5416	[1]	SWASHPLATE
23.	1T-0284	[3]	BOLT
24.	8J-0137	[1]	BODY
25.	7J-8894	[1]	CUP
26.	1A-2223	[2]	DOWEL
			THE FOLLOWING REPAIR KIT IS AVAILABLE.
	8J-8652	[1]	KIT (seal)
			(Includes gasket, ring, and seals)
	C		INDICATES CHANGE

#HEBP12170308

8J-6899: HEAD GP-PUMP CONTROL

HEAD GP-PUMP CONTROL

8J6899 PUMP CONTROL HEAD GROUP
Part of 8J1905 Slipper Piston Pump Group shown on Page 166
3G3926 Valve parts are shown on Page 168

c218447 HEBP1217

8J6899 HEAD GP-PUMP CONTROL Parts scheme

For full view, you need register

Parts for your 235 EXCAVATOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	9S-8002	[5]	PLUG
	3J-7354	[5]	SEAL
2.	8J-0436	[1]	HEAD
3.	8J-0442	[1]	COVER
4.	5K-5959	[2]	SEAL
5.	8J-3800	[1]	CARTRIDGE
6.	8J-1898	[5]	SHIM
7.	8J-6305	[1]	SPRING (outer)
8.	8J-3819	[1]	SPRING (inner)
9.	0S-1585	[2]	BOLT
	3B-4508	[2]	LOCKWASHER
10.	8J-2029	[1]	SPACER
11.	8J-0444	[1]	COVER
12.	8J-2028	[1]	SPACER
13.	5P-1480	[6]	SEAL
	8J-3817	[6]	RING
14.	3G-3926 YC	[1]	VALVE GROUP
			(Separate Illustration)
15.	8J-7334	[1]	PISTON
16.	8J-3816	[1]	PISTON
17.	8J-0412	[1]	CUP
	C		INDICATES CHANGE
	Y		SEPARATE ILLUSTRATION

#HEBP12170309

3G-3926: VALVE GP-SERVO

VALVE GP-SERVO

3G3926 SERVO VALVE GROUP
Part of 8J6899 Pump Control Head Group. Note: for Field Replacement of
3G3925
Sleeve and 3G3924 Spool order 3G3928 Follower Valve Group shown on Page 169

c231687 HEBP1217

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Parts for your 235 EXCAVATOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	8S-3159 C	[1]	SETSCREW-SOCKET
2.	8J-2027	[1]	SPACER
3.	3D-8317	[1]	RING-RETAINING
4.	3G-3917	[1]	STOP
5.	3G-3916	[1]	RING-RETAINING
6.	8J-3820	[1]	PISTON
7.	8J-7335	[1]	PISTON AS
8.	8J-2040	[1]	INSERT
9.	2L-6726	[1]	RING-RETAINING
10.	8J-3801	[1]	CARTRIDGE-SERVO
11.	3G-3925	[1]	SLEEVE-FOLLOW UPPER
12.	3G-3924	[1]	SPOOL-SERVO
	C		CHANGE FROM PREVIOUS TYPE