1P6590 PRESSURE CONTROL GROUP Serial No. 10K11381, 11382, 11384, 11386 to 11388, 11390, 11392 to 11396 and 10K11398-Up Test No. 37636-Up Part of 8M6350 Transmission Hydraulic Control Group shown on Page 66A D6C

OPERATOR STATION

CONTROL GP-TRANSMISSION

0. 1P-6590 PRESSURE C
1. 1P-9674 PRESSURE C
2. 1P-9674 PRESSURE C
3. 8M-6640 TRANSMISSI

POWER TRAIN

VALVE GP-RELIEF

4. 8M-8551 VALVE GP-R

SCREEN GP

5. 9M-8669 SCREEN GP-

FILTER GP

6. 3S-1741 FILTER GP

VALVE GP

7. 2S-8373 CHECK VALV

STEERING AND BRAKING SYSTEM

CLUTCH GP-STEERING

8. 7S-1600 TRANSMISSI
9. 7S-1600 TRANSMISSI
0. INFORMATION

TRACK-TYPE TRACTOR D6C TRACK-TYPE TRACTOR 10K
D6C TRACTOR 10K07953-11939 (MACHINE) UEG0729S D6C 10K (1967)

OPERATOR STATION

CONTROL GP-TRANSMISSION

8M-6349 PRESSURE CONTROL GROUP

1P-6590 PRESSURE CONTROL GROUP

1P-9674 PRESSURE CONTROL GROUP

8M-6640 TRANSMISSION CONTROL LINKAGE GROUP

#UEG0729S0100

1P-6590: PRESSURE CONTROL GROUP

PRESSURE CONTROL GROUP

1P6590 PRESSURE CONTROL GROUP
Serial No. 10K11381, 11382, 11384, 11386 to 11388, 11390, 11392 to 11396 and 10K11398-Up
Test No. 37636-Up
Part of 8M6350 Transmission Hydraulic Control Group shown on Page 66A

c157623 UEG0729S

1P6590 PRESSURE CONTROL GROUP Parts scheme

For full view, you need register

Parts for your D6C TRACK-TYPE TRACTOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	2M-7041	[ 1]	SLUG
2.	1P-8612	[ 1]	STOP
3.	9M-2025	[ 1]	SPOOL
4.	2P-5744	[ 1]	SPRING
5.	8S-9198	[ 1]	PISTON
6.	5M-7915	[ 4]	SPACER 0.77 mm(.030 in.) thick
	5M-7914	[ 3]	SPACER 0.26 mm(.010 in.) thick
7.	8M-5248	[ 3]	SEAL
8.	9S-2753	[ 1]	COVER
9.	8S-9197	[ 1]	VALVE
10.	1P-9665	[ 1]	RETAINER
11.	6D-3036	[ 2]	DOWEL
12.	8M-8132	[ 1]	SPRING
13.	6P-4711	[ 1]	SPOOL ASSEM
			(Includes)
14.	6P-8848	[ 1]	PLUNGER
15.	9H-2367	[ 1]	SPRING
16.	6P-4717	[ 1]	SLEEVE
17.	2M-8191 C	[ 1]	RING
18.	1P-8573	[ 1]	COVER
19.	0S-1594	[ 7]	BOLT
20.	5M-6214	[ 2]	PLUG
			INDICATES CHANGE

#UEG0729S0101

1P-9674: PRESSURE CONTROL GROUP

PRESSURE CONTROL GROUP

1P9674 PRESSURE CONTROL GROUP--Type 1
Provides Field Replacement for 8M6349 and 1P6590 Pressure Control Groups shown on Pages 68 and 68A

c150522 UEG0729S

1P9674 PRESSURE CONTROL GROUP Parts scheme

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Parts for your D6C TRACK-TYPE TRACTOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	0S-1594	[9]	BOLT
2.	5M-2894	[2]	WASHER
3.	8M-4433	[1]	SEAL
4.	1P-9666	[1]	COVER
5.	9M-2025	[1]	SPOOL
6.	2P-5744	[1]	SPRING
7.	8S-9198	[1]	PISTON
8.	8M-5248	[3]	SEAL
9.	5M-7914	[3]	SPACER (.010 in. thick)
	5M-7915	[4]	SPACER (.036 in. thick)
10.	9S-2753	[1]	COVER
11.	8S-9197	[1]	VALVE
12.	6D-3036	[2]	DOWEL
13.	1P-9665	[1]	RETAINER
14.	8M-8132	[1]	SPRING
15.	1P-6593	[1]	SPOOL ASSEM.
			(Includes)
16.	1S-2121	[1]	PLUNGER
17.	4M-2381	[1]	SPRING
18.	8S-0508	[1]	RETAINER
19.	2M-8191	[1]	RING
20.	1P-8573	[1]	COVER
21.	2M-7041	[1]	SLUG
22.	1P-8612	[1]	STOP
	5M-6214 H	[2]	PLUG
	4B-9880 H	[2]	BALL
	H		NOT SHOWN

#UEG0729S0102

1P-9674: PRESSURE CONTROL GROUP

PRESSURE CONTROL GROUP

1P9674 PRESSURE CONTROL GROUP--Type 2
Provides Field Replacement for 8M6349 and 1P6590 Pressure Control Groups shown on Pages 68 and 68A

c152757 UEG0729S

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Parts for your D6C TRACK-TYPE TRACTOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	0S-1594	[9]	BOLT
2.	5M-2894	[2]	WASHER
3.	8M-4433	[1]	SEAL
4.	1P-9666	[1]	COVER
5.	9M-2025	[1]	SPOOL
6.	2P-5744	[1]	SPRING
7.	8S-9198	[1]	PISTON
8.	8M-5248	[3]	SEAL
9.	5M-7914	[3]	SPACER (.010 in. thick)
	5M-7915	[4]	SPACER (.036 in. thick)
10.	9S-2753	[1]	COVER
11.	8S-9197	[1]	VALVE
12.	6D-3036	[2]	DOWEL
13.	1P-9665	[1]	RETAINER
14.	8M-8132	[1]	SPRING
15.	6P-4711 C	[1]	SPOOL ASSEM.
			(Includes)
16.	6P-8848	[1]	PLUNGER
17.	9H-2367	[1]	SPRING
18.	6P-4717	[1]	SLEEVE
19.	2M-8191	[1]	RING
20.	1P-8573	[1]	COVER
21.	2M-7041	[1]	SLUG
22.	1P-8612	[1]	STOP
	5M-6214 H	[2]	PLUG
	4B-9880 H	[2]	BALL
	C		INDICATES CHANGE
	H		NOT SHOWN

#UEG0729S0103

8M-6640: TRANSMISSION CONTROL LINKAGE GROUP

TRANSMISSION CONTROL LINKAGE GROUP

8M6640 TRANSMISSION CONTROL LINKAGE GROUP

c208190 UEG0729S

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Parts for your D6C TRACK-TYPE TRACTOR:

CATERPILLAR SIS

Part No	Qty	Parts name
4M-0444	[1]	BRACKET
4B-1290	[1]	SCREW
1B-2578	[1]	NUT
3B-4506	[1]	LOCKWASHER
2M-8908	[1]	KNOB
9M-1384	[1]	GUARD ASSEM.
8B-4037	[1]	WASHER
0S-1591 C	[1]	BOLT
1D-4717	[1]	NUT
3B-4506	[1]	LOCKWASHER
4M-0496	[1]	BOLT
4M-0497	[1]	NUT (375"THICK)
1D-4717	[1]	NUT (328"THICK)
3B-4506	[1]	LOCKWASHER
4D-4064	[2]	END
5B-9079	[2]	NUT
9M-3526	[1]	LEVER
9M-1926	[1]	ROD
9M-1340	[1]	SHAFT ASSEM
6D-5974	[2]	BEARING
9S-9365	[1]	BRACKET
8B-4037	[1]	WASHER
8B-2278	[1]	LOCK
1A-1460	[1]	BOLT
2M-7167	[1]	SPACER
5H-3895	[1]	BUSHING
7M-0706	[1]	KNOB
4M-8799	[1]	SPRING
4M-0459	[1]	LEVER ASSEM
0T-0924	[1]	BOLT
1B-4203	[1]	NUT
0S-1585	[3]	BOLT
3B-4508	[3]	LOCKWASHER
9S-0552	[1]	GUARD ASSEM
9M-3528	[2]	SCREW
1B-2578	[2]	NUT
3B-4506	[2]	LOCKWASHER
9S-0597	[1]	GUIDE
4B-1280	[4]	SCREW
9F-6445	[4]	NUT (WELD)
9S-0555	[1]	LUG
5D-2643	[1]	LUG
		(PARTS OF 9M1384 ASSEM.)
0L-1351	[3]	BOLT
3B-4506	[3]	LOCKWASHER
0S-1594 C	[4]	BOLT
3B-4506	[4]	LOCKWASHER
4D-4064	[2]	END
1B-2578	[2]	NUT
4M-0496	[1]	BOLT
4M-0497	[1]	NUT
3B-4506	[1]	LOCKWASHER
9M-1924	[1]	ROD
9M-1385	[1]	LEVER
1B-8706	[1]	KEY
0T-0924	[1]	BOLT
1B-4203	[1]	NUT
9M-1386	[1]	LEVER
1B-8706	[1]	KEY
0T-0924	[1]	BOLT
1B-4203	[1]	NUT
8B-4037	[1]	WASHER
4M-0496	[1]	BOLT
4M-0497	[1]	NUT
3B-4506	[1]	LOCKWASHER
9M-1380	[1]	LEVER
1B-8706	[1]	KEY
C		INDICATES CHANGE

#UEG0729S0104

8M-8551: VALVE GP-RELIEF

VALVE GP-RELIEF

8M8551 RELIEF VALVE GROUP
Part of 8S590 Range Transmission Arrangement shown on Page 62

c90458 UEG0729S

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Parts for your D6C TRACK-TYPE TRACTOR:

CATERPILLAR SIS

Part No	Qty	Parts name
5M-7908	[1]	PLUG ASSEM.
3J-1907	[1]	"O" RING
		(PART OF PLUG ASSEM.5M7908)
8M-8597	[1]	SPRING
0S-1594	[2]	BOLT
3B-4506	[2]	LOCKWASHER
4M-8815	[1]	COVER
8M-5254	[1]	SEAL
8M-8598	[1]	SPOOL
8M-8599	[1]	BODY

#UEG0729S0105

9M-8669: SCREEN GP-MAGNETIC

SCREEN GP-MAGNETIC

9M8669 MAGNETIC SCREEN GROUP
Part of Transmission & Steering Clutch
Lubrication System shown on Page 72

c113539 UEG0729S

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Parts for your D6C TRACK-TYPE TRACTOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	3D-2871	[4]	STUD
2.	1D-4717	[4]	NUT
3.	3S-3439	[1]	COVER
4.	3S-3440	[1]	SPRING WASHER
5.	5F-0149	[2]	SEAL
6.	3S-3875	[1]	SCREEN
7.	2S-1641	[1]	TUBE ASSEM.
8.	8M-7160	[4]	MAGNET
9.	1J-8668	[4]	STUD (2" long)
			-OR-
	8M-1047	[4]	STUD (1.70" long)
			-OR-
	2M-4779	[4]	STUD (1.80" long)
	1D-4717	[4]	NUT
	3B-4506	[4]	LOCKWASHER
10.	8M-7166	[1]	HOUSING

#UEG0729S0106

3S-1741: FILTER GP

FILTER GP

3S1741 TRANSMISSION AND STEERING CLUTCH FILTER GROUP
Part of 7S1600 Transmission and Steering Clutch Lubrication
System Group shown on Page 73

c230332 UEG0729S

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Parts for your D6C TRACK-TYPE TRACTOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	9S-7227	[1]	COVER AS
2.	2S-9694	[1]	PIN
3.	9S-4191	[1]	PLUG-O-RING
	3J-1907	[1]	SEAL
4.	0S-1595	[4]	BOLT
5.	3F-7514	[1]	PIN
6.	4S-8975	[1]	TUBE
7.	9S-4205	[1]	PLUG-O-RING
8.	7M-8485	[1]	SEAL-O-RING
9.	9M-4685	[1]	SPRING
10.	3S-1748	[1]	RETAINER AS
	3S-1751	[1]	SEAL
11.	5S-0788	[1]	HOUSING AS
12.	3D-2871	[4]	STUD
13.	4J-6064	[1]	ELEMENT-FILTER (DISPOSABLE)
			-OR-
	1U-2094 AC	[1]	ELEMENT-FILTER
			(FIRE RESISTANT FLUID)
14.	4S-7648	[1]	WASHER
15.	4H-1790	[1]	SPRING
16.	4S-7647	[1]	VALVE
17.	2H-9247	[1]	SEAL-O-RING
	A		NOT PART OF THIS GROUP
	C		CHANGE FROM PREVIOUS TYPE

#UEG0729S0107

2S-8373: CHECK VALVE GROUP

CHECK VALVE GROUP

2S8373 CHECK VALVE GROUP
Part of 7S1600 Transmission and Steering Clutch Lubrication
System Group shown on Page 72

c144060 UEG0729S

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Parts for your D6C TRACK-TYPE TRACTOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	2S-8578	[ 1]	HOUSING
2.	5M-6214	[ 1]	PLUG
3.	3S-8236	[ 1]	VALVE
4.	0L-1142	[ 1]	SPRING
5.	9M-0135	[ 1]	PLUG
6.	8M-4988	[ 1]	SEAL (Oil)
7.	7B-0472	[ 1]	PIN

#UEG0729S0108

7S-1600: TRANSMISSION AND STEERING CLUTCH LUBRICATION SYSTEM

TRANSMISSION AND STEERING CLUTCH LUBRICATION SYSTEM

TRANSMISSION AND STEERING CLUTCH LUBRICATION SYSTEM (7S1600 N/S)--Part 1 of 2
Serial No. 10K7953 to 10K10134 inclusive
9M8669 Screen and 2S8373 Valve parts are shown on Pages 70 and 71

c144080 UEG0729S

7S1600 TRANSMISSION AND STEERING CLUTCH LUBRICATION SYSTEM Parts scheme

For full view, you need register

Parts for your D6C TRACK-TYPE TRACTOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	0L-1143	[ 1]	BOLT
2.	3B-4506	[ 24]	LOCKWASHER
3.	0S-1594	[ 2]	BOLT
4.	8M-7998	[ 1]	GUIDE ASSEM.
5.	8M-7994	[ 1]	PLUNGER ASSEM.
6.	0S-1588	[ 14]	BOLT
7.	8M-4987	[ 3]	SEAL
8.	1A-2029	[ 16]	BOLT
9.	5S-0763	[ 1]	HOSE ASSEM. (29.38" Long Overall)
10.	9M-9037	[ 1]	FLANGE
	1S-0004	[ 1]	SEAL
11.	9S-9420	[ 4]	CLAMP
12.	5S-0786	[ 1]	HOSE ASSEM. (10 30" Long Overall)
13.	1P-4577	[ 2]	FLANGE
14.	1P-4576	[ 4]	FLANGE
	8M-4988	[ 2]	SEAL
15.	9S-9447	[ 1]	TUBE ASSEM
16.	9S-9449	[ 1]	TUBE ASSEM.
17.	4B-4278	[ 3]	WASHER
18.	9M-8669 Y	[ 1]	SCREEN GROUP
19.	9M-2968	[ 1]	TUBE ASSEM.
20.	9M-2740	[ 1]	TUBE ASSEM.
21.	1F-3133	[ 1]	GASKET
22.	8M-4436	[ 1]	SEAL
23.	8M-4390	[ 1]	SEAL
24.	2S-8373 C Y	[ 1]	VALVE GROUP
25.	0T-0102	[ 2]	BOLT
26.	2P-9546	[ 1]	TUBE
27.	7M-1588	[ 1]	GASKET
28.	3S-2053	[ 1]	TUBE ASSEM.
29.	5B-9603	[ 1]	BOLT
30.	8M-4448	[ 1]	SEAL
31.	8M-4445	[ 1]	SEAL
32.	7B-1597	[ 1]	CLIP
33.	8B-6127	[ 1]	CLIP
34.	2S-6683		HOSE (Use as Required)-16 in.
35.	4S-8457		TUBE 13.13 in.
			SEPARATE ILLUSTRATION
			INDICATES CHANGE

#UEG0729S0109

7S-1600: TRANSMISSION AND STEERING CLUTCH LUBRICATION SYSTEM

TRANSMISSION AND STEERING CLUTCH LUBRICATION SYSTEM

TRANSMISSION AND STEERING CLUTCH LUBRICATION SYSTEM (7S1600 N/S)--Part 2 of 2
Serial No. 10K7953 to 10K10134 inclusive
3S1741 and 9S9384 Pump parts are shown on Pages 71 and 74

c144081 UEG0729S

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Parts for your D6C TRACK-TYPE TRACTOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	8M-4987	[6]	SEAL
2.	1A-2029	[7]	BOLT
3.	3B-4506	[18]	LOCKWASHER
4.	9M-5962	[1]	ELBOW
5.	0S-1571	[1]	BOLT
6.	0S-1588	[14]	BOLT
7.	9S-9393	[1]	TUBE ASSEM.
8.	8M-4436	[1]	SEAL
9.	9S-9384 Y	[1]	PUMP GROUP
			(Separate Illustration)
10.	1P-1556	[1]	HOSE ASSEM.
11.	1P-4577	[6]	FLANGE
12.	4B-4278	[2]	WASHER
13.	7S-1636	[1]	PLATE
14.	1D-4717	[6]	NUT
15.	3S-1741 Y	[1]	FILTER GROUP
			(Separate Illustration)
16.	8S-2957	[1]	BRACKET
17.	0S-1619	[2]	BOLT
18.	9S-9407	[1]	TUBE ASSEM.
19.	8F-8882	[1]	SEAL
20.	9M-3832	[1]	PLATE
21.	5S-0803	[1]	HOSE ASSEM.
22.	0L-2070	[2]	BOLT
	Y		SEPARATE ILLUSTRATION