3G7636 VANE PUMP GROUP Serial No. 55U503-Up Part of 9K1811 Vane Pump Group shown on Page 193B 518 WHEEL SKIDDER

HYDRAULIC SYSTEM

PUMP GP

0. 3G-7636 PUMP GP-VA
1. 3G-7654 CARTRIDGE

WORK TOOLS

WINCH GP

2. 1V-4777 WINCH CONT
3. 1V-4777 WINCH CONT
4. 1V-4777 WINCH CONT
5. 4V-9545 BOOSTER GP
6. 3V-1153 WINCH CONT
7. 3V-1153 WINCH CONT
8. 3K-9869 BOOSTER AS
9. 1V-4775 BOOSTER CO
0. INFORMATION

WHEEL SKIDDER 518 WHEEL SKIDDER 50S
518 SKIDDER 50S01289-03229 (MACHINE) POWERED BY 3304 ENGINE SEBP1049 518 50S (1971)

HYDRAULIC SYSTEM

PUMP GP

3G-2199 CARTRIDGE GROUP

9K-1811 PUMP GP-VANE

3G-7636 PUMP GP-VANE

3G-7654 CARTRIDGE GP

#SEBP10490600

3G-7636: PUMP GP-VANE

PUMP GP-VANE

3G7636 VANE PUMP GROUP
Serial No. 55U503-Up
Part of 9K1811 Vane Pump Group shown on Page 193B

c178364 SEBP1049

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Parts for your 518 WHEEL SKIDDER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	1D-4569	[4]	BOLT
2.	4M-7652	[1]	RING (outer)
3.	1L-8497	[1]	RING (inner)
4.	6B-1124	[1]	BEARING
5.	4M-7648	[1]	WASHER
6.	5P-0903	[1]	SEAL
7.	9J-5096	[1]	SHAFT
8.	3G-9193	[1]	SEAL
9.	3G-7242	[1]	PLUG
10.	9J-5126	[1]	BODY
11.	3G-7654 RY	[1 64 L/MIN.(17 GPM)]	CARTRIDGE GROUP
			(Separate Illustration)
12.	4J-0975	[1]	COVER
			THE FOLLOWING REPAIR KIT IS AVAILABLE:
	1U-0379	[1]	KIT (Flex Plate)
	R		REMFG PART MAY BE AVAILABLE
	Y		SEPARATE ILLUSTRATION

#SEBP10490601

3G-7654: CARTRIDGE GP

CARTRIDGE GP

3G7654 CARTRIDGE GROUP--64 L/min (17 gpm)
Serial No. 55U392-Up
Part of 3G7636 Vane Pump Group shown on Page 193B-2
Also provides Field Replacement for 3G2199

c178365 SEBP1049

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Parts for your 518 WHEEL SKIDDER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	8J-4351	[1]	SEAL
2.	3G-9055	[4]	SEAL
3.	6V-1197	[1]	SEAL
4.	3G-2193	[1]	RING
5.	6V-1556	[1]	RING

#SEBP10490602

1V-4777: WINCH CONTROL BOOSTER GROUP

WINCH CONTROL BOOSTER GROUP

1V4777 WINCH CONTROL BOOSTER GROUP--Type 1
Serial No. 50S1289 to 50S2378 inclusive & 94U287 to 94U525 inclusive
Part of 1V4775 Booster Control Winch Arrangement listed on Page 196
3K9869 Booster parts are shown on Page 195. AN ATTACHMENT

c148421 SEBP1049

1V4777 WINCH CONTROL BOOSTER GROUP Parts scheme

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Parts for your 518 WHEEL SKIDDER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	9K-6434	[1]	TUBE ASSEM.
2.	3K-0846	[1]	NUT
3.	3K-0836	[1]	SEAL
4.	3K-1266	[1]	TUBE
5.	1F-1480	[1]	FITTING
			(Includes)
	8F-8997	[1]	NUT
6.	9K-6371	[1]	TUBE ASSEM.
7.	9S-7706 C	[1]	ELBOW
8.	4H-6143	[2]	BOLT
	4H-6145	[2]	GASKET .60 in.(15.24 mm) I.D.
	5H-3703	[2]	GASKET .51 in.(12.96 mm) I.D.
9.	0S-0509 C	[4]	BOLT
10.	3B-4506 C	[4]	LOCKWASHER
11.	7M-7410 C	[1]	PLUG
12.	1V-5680 C	[1]	TUBE ASSEM.
13.	5K-9244 C	[1]	ELBOW
14.	1V-5703 C	[1]	TUBE ASSEM.
15.	003-8470 C	[1]	TEE
16.	5M-8429 C	[1]	CLIP
17.	9K-6370	[1]	TUBE ASSEM.
18.	8L-6557	[2]	CONNECTOR
19.	9K-6255	[2]	FITTING
20.	1B-4202	[3]	BOLT
	3B-4505	[3]	LOCKWASHER
21.	9K-6197	[1]	BRACKET ASSEM.
			(Includes)
22.	9F-2978	[2]	NUT
23.	2M-0287 C	[1]	CLIP
24.	3B-7741 C	[2]	NIPPLE
25.	3K-9869 Y	[1]	BOOSTER ASSEM.
			(Separate Illustration)
26.	9K-6177	[1]	BRACKET ASSEM.
			(Includes)
27.	9F-2978	[1]	NUT
	C		INDICATES CHANGE
	Y		SEPARATE ILLUSTRATION

#SEBP10490603

1V-4777: WINCH CONTROL BOOSTER GROUP

WINCH CONTROL BOOSTER GROUP

1V4777 WINCH CONTROL BOOSTER GROUP--Type 2
Serial No. 50S1289 to 50S2378 inclusive and 94U287 to 94U525 inclusive
Part of 1V4775 Booster Control Winch Arrangement listed on Page 196
3K9869 Booster parts are shown on Page 195. AN ATTACHMENT

c158650 SEBP1049

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Parts for your 518 WHEEL SKIDDER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	9K-6434	[1]	TUBE ASSEM.
2.	3K-0846	[1]	NUT
3.	3K-0836	[1]	SEAL
4.	3K-1266	[1]	TUBE
5.	1F-1480	[1]	FITTING
			(Includes)
	8F-8997	[1]	NUT
6.	9K-6371	[1]	TUBE ASSEM.
7.	3B-7741 C	[1]	NIPPLE
8.	4H-6143	[2]	BOLT
	4H-6145	[2]	GASKET 15.24 mm(.60 in.)I.D.
	5H-3703	[2]	GASKET 12.96 mm(.51 in.)I.D.
9.	9K-6370	[1]	TUBE ASSEM.
10.	8L-6557	[2]	CONNECTOR
11.	9K-6255	[2]	FITTING
12.	1B-4202	[3]	NUT
	5P-4116 C	[3]	WASHER
13.	9K-6197	[1]	BRACKET ASSEM.
			(Includes)
14.	9F-2978	[2]	NUT
15.	0S-0509 C	[3]	BOLT
	5P-1075 C	[3]	WASHER
16.	3K-9869 Y	[1]	BOOSTER ASSEM.
			(Separate Assem.)
17.	9K-6177	[1]	BRACKET ASSEM.
			(Includes)
18.	9F-2978	[1]	NUT
	C		INDICATES CHANGE
	Y		SEPARATE ILLUSTRATION

#SEBP10490604

1V-4777: WINCH CONTROL BOOSTER GROUP

WINCH CONTROL BOOSTER GROUP

1V4777 WINCH CONTROL BOOSTER GROUP--Type 3
Serial No. 50S1289 to 50S2378 inclusive & 94U287 to 94U525 inclusive
Part of 1V4775 Booster Control Winch Arrangement listed on Page 196
3K9869 Booster parts are shown on Page 195. AN ATTACHMENT

c213305 SEBP1049

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Parts for your 518 WHEEL SKIDDER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	9K-6434	[1]	TUBE ASSEM.
2.	3K-0846	[1]	NUT
3.	3K-0836	[1]	SEAL
4.	3K-1266	[1]	TUBE
5.	1F-1480	[1]	FITTING
			(Includes)
	8F-8997	[1]	NUT
6.	3V-8961 C	[1]	TUBE ASSEM.
7.	8L-6005 C	[1]	TEE
8.	4H-6143	[2]	BOLT
	4H-6145	[2]	GASKET 15.24 mm(.60 in.)I.D.
9.	5H-3703	[2]	GASKET 12.96 mm(.51 in.)I.D.
10.	3V-8960 C	[1]	TUBE ASSEM.
11.	5K-3713 C	[2]	CONNECTOR
12.	1B-4202	[3]	NUT
	5P-4116	[3]	WASHER
13.	9K-6197	[1]	BRACKET ASSEM.
			(Includes)
14.	9F-2978	[2]	NUT
15.	0S-0509	[3]	BOLT
	5P-1075	[3]	WASHER
16.	3K-9869 Y	[1]	BOOSTER ASSEM.
			(Separate Assem.)
17.	9K-6177	[1]	BRACKET ASSEM.
			(Includes)
18.	9F-2978	[1]	NUT
	C		INDICATES CHANGE
	Y		SEPARATE ILLUSTRATION

#SEBP10490605

4V-9545: BOOSTER GP-WINCH CONTROL

BOOSTER GP-WINCH CONTROL

4V9545 WINCH CONTROL BOOSTER GROUP
Serial No. 50S2379-Up and 94U526-Up
3K9869 Booster parts are shown on Page 195

c221875 SEBP1049

4V9545 BOOSTER GP-WINCH CONTROL Parts scheme

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Parts for your 518 WHEEL SKIDDER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	9K-6434	[1]	TUBE ASSEM.
2.	3K-0846	[1]	NUT
3.	3K-0836	[1]	SEAL
4.	3K-1266	[1]	TUBE
5.	1F-1480	[1]	FITTING
			(Includes)
	8F-8997	[1]	NUT
6.	1B-4202	[3]	NUT
	5P-4116	[3]	WASHER
7.	9K-6197	[1]	BRACKET ASSEM.
			(includes)
8.	9F-2978	[2]	NUT
9.	0S-0509	[3]	BOLT
	5P-1075	[3]	WASHER
10.	3K-9869 Y	[1]	BOOSTER ASSEM.
			(Separate Assem.)
11.	9K-6177	[1]	BRACKET ASSEM.
			(Includes)
12.	9F-2978	[1]	NUT
	Y		SEPARATE ILLUSTRATION

#SEBP10490606

3V-1153: WINCH CONTROL BOOSTER GROUP

WINCH CONTROL BOOSTER GROUP

3V1153 WINCH CONTROL BOOSTER GROUP--Field Installation--Type 1
Serial No. 50S1289-Up and 94U287-Up. Reduces clutch or reel-in operating control effort
3K9869 Booster and 9K7655 Valve parts are shown on Pages 195 and 196

c158640 SEBP1049

3V1153 WINCH CONTROL BOOSTER GROUP Parts scheme

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Parts for your 518 WHEEL SKIDDER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	9K-7655 Y	[1]	VALVE GROUP
			(Separate Illustration)
2.	9K-6434	[1]	TUBE ASSEM.
3.	3K-0846	[1]	NUT
4.	3K-0836	[1]	SEAL
5.	3K-1266	[1]	TUBE
6.	1F-1480	[1]	FITTING
			(Includes)
	8F-8997	[1]	NUT
7.	9K-6371	[1]	TUBE ASSEM.
8.	8L-6005	[1]	TEE
9.	4H-6143	[2]	BOLT
	4H-6145	[2]	GASKET 15.24 mm(.60 in.) I.D.
	5H-3703	[2]	GASKET 12.96 mm(.51 in.) I.D.
10.	9K-6370	[1]	TUBE ASSEM.
11.	8L-6557	[2]	CONNECTOR
12.	9K-6255	[2]	FITTING
13.	1B-4202	[3]	NUT
	5P-4116	[3]	WASHER
14.	9K-6197	[1]	BRACKET ASSEM.
			(Includes)
15.	9F-2978	[2]	NUT
16.	0S-0509	[3]	BOLT
	5P-1075	[3]	WASHER
17.	3K-9869 Y	[1]	BOOSTER ASSEM.
			(Separate Illustration)
18.	9K-6177	[1]	BRACKET ASSEM.
			(Includes)
19.	9F-2978	[1]	NUT
	Y		SEPARATE ILLUSTRATION

#SEBP10490607

3V-1153: WINCH CONTROL BOOSTER GROUP

WINCH CONTROL BOOSTER GROUP

3V1153 WINCH CONTROL BOOSTER GROUP--Field Installation--Type 2
Serial No. 50S1289-Up and 94U287-Up
Reduces clutch or reel-in operating control effort
3K9869 Booster and 9K7655 Valve parts are shown on Pages 195 and 196

c213304 SEBP1049

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Parts for your 518 WHEEL SKIDDER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	9K-7655 Y	[1]	VALVE GROUP
			(Separate Illustration)
2.	9K-6434	[1]	TUBE ASSEM.
3.	3K-0846	[1]	NUT
4.	3K-0836	[1]	SEAL
5.	3K-1266	[1]	TUBE
6.	1F-1480	[1]	FITTING
			(Includes)
	8F-8997	[1]	NUT
7.	3V-8961 C	[1]	TUBE ASSEM.
8.	8L-6005	[1]	TEE
9.	4H-6143	[2]	BOLT
	4H-6145	[2]	GASKET 15.24 mm(.60 in.) I.D.
10.	5H-3703	[2]	GASKET 12.96 mm(.51 in.) I.D.
11.	3V-8960 C	[1]	TUBE ASSEM.
12.	5K-3713 C	[2]	CONNECTOR
13.	1B-4202	[3]	NUT
	5P-4116	[3]	WASHER
14.	9K-6197	[1]	BRACKET ASSEM.
			(Includes)
15.	9F-2978	[2]	NUT
16.	0S-0509	[3]	BOLT
	5P-1075	[3]	WASHER
17.	3K-9869 Y	[1]	BOOSTER ASSEM.
			(Separate Illustration)
18.	9K-6177	[1]	BRACKET ASSEM.
			(Includes)
19.	9F-2978	[1]	NUT
	C		INDICATES CHANGE
	Y		SEPARATE ILLUSTRATION

#SEBP10490608

3K-9869: BOOSTER AS-BRAKE

BOOSTER AS-BRAKE

3K9869 BRAKE BOOSTER ASSEMBLY
Serial No. 50S1289-Up and 94U287-Up
Part of 1V4777 & 4V9545 Winch Control Booster Groups shown on Pages 194, 194A, 194A-1 & 194A-2

c234162 SEBP1049

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Parts for your 518 WHEEL SKIDDER:

CATERPILLAR SIS

Part No	Qty	Parts name
3K-0847	[1]	RING
	[1]	WICK
3K-9846	[1]	PLATE
3K-9849	[1]	PLATE
3K-0774	[1]	CYLINDER ASSEM
3K-9737	[1]	PLATE ASSEM
3K-0764	[1]	SPRING
3K-0715	[1]	SEAL
3K-0722	[1]	SLEEVE
3K-0710	[1]	CUP
3K-0842	[1]	WASHER
3K-9850	[1]	ROD ASSEM
3K-0791	[1]	SPRING
3K-0811	[1]	PACKING
3K-9847	[1]	RETAINER
051-6173 C	[1]	NUT
3K-1927	[1]	PISTON
4K-0315	[1]	PACKING (REAR)
4K-0314	[1]	PACKING (FRONT)
1B-4202	[6]	NUT
3B-4505	[6]	LOCKWASHER
3K-0700	[4]	BOLT (175" LONG)
4B-9883	[2]	BOLT (875" LONG)
3K-0760	[1]	RETAINER
9F-3958	[1]	SEAL
3K-0719	[1]	SEAL
		(PARTS OF PLATE ASSEM. 3K9737)
3K-0708	[1]	SEAL
0S-1615	[6]	BOLT
3B-4504	[6]	LOCKWASHER
8H-1037	[1]	RING
3K-0713	[1]	DIAPHRAGM ASSEM
3K-0723	[1]	VALVE BODY ASSEM
2B-7457	[1]	PLUG (PIPE)
3K-0835	[1]	NUT
3K-0809	[1]	SPRING
3K-0707	[1]	ADAPTER
3K-0844	[1]	PLATE
4K-3032	[1]	SPRING
3K-0718	[1]	SEAL
3K-0837	[2]	SCREW
3K-0704	[1]	DIAPHRAGM
3K-0843	[1]	WASHER
3K-1926	[1]	FITTING
3K-0812	[1]	PLUG
3K-0785	[1]	RING
3K-0806	[1]	SPRING
3K-0763	[1]	WASHER
3K-0775	[1]	VALVE ASSEM
3K-0709	[1]	NUT
3K-0721	[1]	GASKET
3K-0833	[1]	TUBE
3K-0825	[1]	PACKING
3K-0765	[1]	RING
3K-0838	[1]	RETAINER
3K-0711	[1]	SPRING
3D-2891	[1]	BALL
		(PARTS OF PISTON ASSEM 3K788)
3K-0717	[1]	SEAL
3K-0788	[1]	PISTON ASSEM
3K-0783	[1]	PIN
3K-0802	[1]	SEAL
3K-0784	[1]	RING
3K-0720	[1]	WASHER
C		INDICATES CHANGE

#SEBP10490609

1V-4775: BOOSTER CONTROL WINCH ARRANGEMENT

BOOSTER CONTROL WINCH ARRANGEMENT

1V4775 BOOSTER CONTROL WINCH ARRANGEMENT
Serial No. 50S1289 to 50S2378 inclusive and 94U287 to 94U525 inclusive
AN ATTACHMENT

SEBP10490609 SEBP1049

For full view, you need register

Parts for your 518 WHEEL SKIDDER:

CATERPILLAR SIS

Part No	Qty	Parts name
8K-6917 Y	[1]	ADAPTER AND WINCH GROUP
		- OR -
4V-5569 Y	[1]	ADAPTER AND WINCH GROUP
9K-7655 Y	[1]	WINCH CONTROL VALVE GROUP
1V-4777 Y	[1]	WINCH CONTROL BOOSTER GROUP
Y		SEPARATE ILLUSTRATION