VALVE (1P8974 N/S) Serial No. 91P116 to 91P498, 500, 502 and 91P506 inclusive Part of Transmission Hydraulic Control shown on Pages 69A and 69C. 5S1002 Selector Control and 1P8975 Pressure Control parts are shown on Pages 70, 71 and 71A 815

POWER TRAIN

VALVE GP

0. 1P-8974 VALVE
1. 1P-8974 VALVE

VALVE GP-RELIEF

2. 3S-6860 VALVE GP-R

VALVE GP-SELECTOR & PRESS CONT

3. 5S-1002 CONTROL GP

TRANSMISSION GP

4. 5S-1003 PRESSURE C
5. 5S-1003 PRESSURE C

VALVE GP-SELECTOR & PRESS CONT

6. 1P-8975 PRESSURE C
7. 1P-8975 PRESSURE C

TRANSMISSION GP

8. 3P-4489 PRESSURE C

SHAFT GP

9. DRIVE SHAF
0. INFORMATION

SOIL COMPACTOR 815 SOIL COMPACTOR 91P
815 COMPACTOR 91P00001-00527 (MACHINE) UEG0266S 815 91P (1970)

POWER TRAIN

VALVE GP

1P-8974 VALVE

#UEG0266S0170

1P-8974: VALVE

VALVE

VALVE (1P8974 N/S)
Serial No. 91P116 to 91P498, 500, 502 and 91P506 inclusive
Part of Transmission Hydraulic Control shown on Pages 69A and 69C. 5S1002
Selector Control and 1P8975 Pressure Control parts are shown on Pages 70, 71 and 71A

c111561 UEG0266S

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Parts for your 815 SOIL COMPACTOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	5S-7828	[1]	MANIFOLD ASSEM.
2.	8H-9208	[1]	DOWEL
			(Part of 5S7828 Assem.)
3.	1P-8975 Y	[1]	VALVE GROUP
			(See Separate Illustration)
4.	1S-9810	[24]	BOLT
	9M-1974	[24]	WASHER
5.	5S-1002 Y	[1]	CONTROL GROUP
			(See Separate Illustration)
6.	9S-8421	[1]	MANIFOLD
	Y		SEPARATE ILLUSTRATION

#UEG0266S0171

1P-8974: VALVE

VALVE

VALVE (1P8974 N/S)
Serial No. 91P499, 501, 503 to 505 and 91P507-Up
Part of Transmission Hydraulic Control shown on Page 69C. 3P4489 Pressure
Control and 5S1002 Selector Control parts are shown on Pages 70 and 71B

c143455 UEG0266S

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Parts for your 815 SOIL COMPACTOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	5S-7828	[1]	MANIFOLD ASSEM.
2.	8H-9208	[1]	DOWEL
3.	3P-4489 YC	[1]	VALVE GROUP
			(See Separate Illustration)
4.	1S-9810	[24]	BOLT
	9M-1974	[24]	WASHER
5.	5S-1002 Y	[1]	CONTROL GROUP
			(See Separate Illustration)
6.	9S-8421	[1]	MANIFOLD
	C		INDICATES CHANGE
	Y		SEPARATE ILLUSTRATION

#UEG0266S0172

3S-6860: VALVE GP-RELIEF

VALVE GP-RELIEF

3S6860 RELIEF VALVE GROUP
Part of Transmission shown on Page 62

c79975 UEG0266S

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Parts for your 815 SOIL COMPACTOR:

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
	[1]	BODY

#UEG0266S0173

5S-1002: CONTROL GP-SELECTOR

CONTROL GP-SELECTOR

5S1002 SELECTOR CONTROL GROUP
Part of Transmission Hydraulic Control and Valve shown
on Pages 69 and 69F

c101586 UEG0266S

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Parts for your 815 SOIL COMPACTOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	5S-0968	[1]	SPOOL (Speed)
2.	2S-5717	[2]	NUT
3.	5S-0909	[2]	LINE
4.	5S-0967	[1]	SPOOL (Directional)

#UEG0266S0174

5S-1003: PRESSURE CONTROL GROUP

PRESSURE CONTROL GROUP

5S1003 PRESSURE CONTROL GROUP
Serial No. 91P1 to 91P76 & 91P81 to 91P83 inclusive
Part of Transmission Hydraulic Control shown on Page 69

c102805 UEG0266S

5S1003 PRESSURE CONTROL GROUP Parts scheme

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Parts for your 815 SOIL COMPACTOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	7S-4609	[1]	SPOOL ASSEM.
2.	3D-8317	[1]	RING
3.	8M-1013	[1]	RETAINER
4.	4M-2381	[1]	SPRING
5.	1S-2121	[1]	PLUNGER
6.	5M-8009	[1]	PIN
			(Parts of 7S4609 Spool Assem.)
7.	7M-1396	[1]	SPACER (.062" Thick)
	7M-1397	[2]	SPACER (.036" Thick)
	7S-4584	[3]	SPACER (.010" Thick)
8.	7S-4596	[1]	SPRING (Outer)
9.	7S-4595	[1]	SPRING (Inner)
10.	5S-4317	[1]	BODY
11.	7S-4594	[1]	PISTON
12.	8M-4987	[2]	SEAL
13.	5S-4308	[1]	COVER
14.	5S-4310	[1]	STOP
15.	3S-9950	[1]	SPRING
16.	1T-0414	[9]	BOLT
	9M-1974	[9]	WASHER
17.	8M-4988	[1]	SEAL
18.	3S-9951	[1]	WASHER
19.	3S-9949	[1]	SPRING
20.	5S-1014	[1]	SPOOL
21.	8S-3354	[1]	SPOOL
22.	5M-6214	[3]	PLUG
23.	7B-9411	[1]	SPRING
24.	7S-6874	[1]	STOP
25.	7S-4590	[1]	COVER
26.	5S-7906	[1]	STOP
27.	8S-3388	[1]	SPOOL
28.	5M-2504	[1]	SLUG
29.	8H-5244	[1]	DOWEL
30.	7S-6873	[1]	STOP
31.	2M-7041	[1]	SLUG

#UEG0266S0175

5S-1003: PRESSURE CONTROL GROUP

PRESSURE CONTROL GROUP

5S1003 PRESSURE CONTROL GROUP
Serial No. 91P77 to 91P80 and 91P84 to 91P115 inclusive
Part of Transmission Hydraulic Control shown on Page 69

c133205 UEG0266S

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Parts for your 815 SOIL COMPACTOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	9S-5287	[1]	SPOOL ASSEM.
2.	3D-8317	[1]	RING
3.	8M-1013	[1]	RETAINER
4.	4M-2381	[1]	SPRING
5.	1S-2121	[1]	PLUNGER
6.	5M-8009	[1]	PIN
			(Parts of 9S5287 Assem.)
7.	7M-1396	[1]	SPACER (.062" Thick)
	7M-1397	[2]	SPACER (.036" Thick)
	5M-3492	[3]	SPACER (.010" Thick)
8.	7S-4596	[1]	SPRING (Outer)
9.	7S-4595	[1]	SPRING (Inner)
10.	5S-4317	[1]	BODY
11.	7S-4594	[1]	PISTON
12.	1S-9799	[2]	SEAL
13.	1P-4128	[1]	COVER
14.	5S-4310	[1]	STOP
15.	3S-9950	[1]	SPRING
16.	1T-0414	[9]	BOLT
	9M-1974	[9]	WASHER
17.	8M-4988	[1]	SEAL
18.	3S-9951	[1]	WASHER
19.	3S-9949	[1]	SPRING
20.	5S-1014	[1]	SPOOL
21.	1P-0561	[1]	SPOOL
22.	5M-6214	[3]	PLUG
23.	1P-9602	[1]	SPRING
24.	7S-6874	[1]	STOP
25.	7S-4590	[1]	COVER
26.	5S-7906	[1]	STOP
27.	8S-3388	[1]	SPOOL
28.	5M-2504	[1]	SLUG
29.	8H-5244	[1]	DOWEL
30.	9S-4416	[1]	STOP
31.	2M-7041	[1]	SLUG

#UEG0266S0176

1P-8975: PRESSURE CONTROL VALVE GROUP

PRESSURE CONTROL VALVE GROUP

1P8975 PRESSURE CONTROL VALVE GROUP
Serial No. 91P116 to 91P278, 91P284 to 91P286 inclusive
Part of Valve shown on Page 69F

c111562 UEG0266S

1P8975 PRESSURE CONTROL VALVE GROUP Parts scheme

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Parts for your 815 SOIL COMPACTOR:

CATERPILLAR SIS

Pos.	Qty	Parts name
1.	[1]	SPOOL ASSEM.
2.	[1]	RING
3.	[1]	RETAINER
4.	[1]	SPRING
5.	[1]	PLUNGER
6.	[1]	PIN
7.	[1]	SPACER (.062" Thick)
	[2]	SPACER (.036" Thick)
	[3]	SPACER (.010" Thick)
8.	[1]	SPRING (Outer)
9.	[1]	SPRING (Inner)
10.	[1]	BODY ASSEM.
11.	[1]	DOWEL
12.	[2]	SEAL
13.	[1]	COVER
14.	[1]	STOP
15.	[1]	SPRING
16.	[9]	BOLT
	[9]	WASHER
17.	[1]	PISTON
18.	[1]	WASHER
19.	[1]	SPRING
20.	[1]	PLATE
21.	[1]	SPOOL
22.	[3]	PLUG
23.	[1]	SPOOL
24.	[1]	STOP
25.	[1]	COVER
26.	[1]	STOP
27.	[1]	SCREW
28.	[1]	SLUG
29.	[1]	DOWEL
30.	[1]	SLUG

#UEG0266S0177

1P-8975: PRESSURE CONTROL VALVE GROUP

PRESSURE CONTROL VALVE GROUP

1P8975 PRESSURE CONTROL VALVE GROUP
Serial No. 91P279 to 283, 287 to 498, 500, 502 and 91P506 inclusive
Part of Valve shown on Page 69F

c138042 UEG0266S

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Parts for your 815 SOIL COMPACTOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	9S-5287	[1]	SPOOL ASSEM.
2.	3D-8317	[1]	RING
3.	8M-1013	[1]	RETAINER
4.	4M-2381	[1]	SPRING
5.	1S-2121	[1]	PLUNGER
6.	5M-8009	[1]	PIN
7.	7M-1396	[1]	SPACER (.062" Thick)
	7M-1397	[2]	SPACER (.036" Thick)
	5M-3492	[3]	SPACER (.010" Thick)
8.	7S-4596	[1]	SPRING (Outer)
9.	7S-4595	[1]	SPRING (Inner)
10.	1P-2558	[1]	BODY ASSEM.
11.	7M-1201	[1]	DOWEL
12.	1S-9799	[2]	SEAL
13.	1P-4128	[1]	COVER
14.	5S-4310	[1]	STOP
15.	3S-9950	[1]	SPRING
16.	1T-0414 C	[7]	BOLT
	9M-1974	[7]	WASHER
17.	7S-4594	[1]	PISTON
18.	3S-9951	[1]	WASHER
19.	3S-9949	[1]	SPRING
20.	1P-8976	[1]	PLATE
21.	1P-0561	[1]	SPOOL
22.	5M-6214	[3]	PLUG
23.	8S-3388	[1]	SPOOL
24.	2P-1951 C	[1]	STOP
25.	2P-1950 C	[1]	COVER
26.	5S-7906	[1]	STOP
27.	7B-3028	[1]	SCREW
28.	5M-2504	[1]	SLUG
29.	8H-5244	[1]	DOWEL
30.	2M-7041	[1]	SLUG
31.	1P-9620 C	[1]	RING
	C		INDICATES CHANGE

#UEG0266S0178

3P-4489: PRESSURE CONTROL GROUP

PRESSURE CONTROL GROUP

3P4489 PRESSURE CONTROL GROUP
Serial No. 91P499, 501, 503 to 505 and 91P507-Up
Part of 1P8974 Valve Group shown on Page 69F

c211351 UEG0266S

3P4489 PRESSURE CONTROL GROUP Parts scheme

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Parts for your 815 SOIL COMPACTOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	9S-5287	[1]	SPOOL ASSEM.
2.	3D-8317	[1]	RING
3.	8M-1013	[1]	RETAINER
4.	4M-2381	[1]	SPRING
5.	1S-2121	[1]	PLUNGER
6.	5M-8009	[1]	PIN
7.	7M-1396	[1]	SPACER 15.74 mm(.062 in.) thick
	7M-1397	[2]	SPACER 0.92 mm(.036 in.) thick
	5M-3492	[3]	SPACER 0.26 mm(.010 in.) thick
8.	7S-4596	[1]	SPRING (Outer)
9.	7S-4595	[1]	SPRING (Inner)
10.	1P-2558	[1]	BODY ASSEM.
11.	7M-1201	[1]	DOWEL
12.	5F-9657 C	[2]	SEAL
13.	1P-4128	[1]	COVER
14.	5S-4310	[1]	STOP
15.	3S-9950	[1]	SPRING
16.	1T-0414	[7]	BOLT
	9M-1974	[7]	WASHER
17.	7S-4594	[1]	PISTON
18.	3S-9951	[1]	WASHER
19.	3S-9949	[1]	SPRING
20.	3P-4491	[1]	PLATE
21.	1P-0561	[1]	SPOOL
22.	5M-6214	[3]	PLUG
23.	8S-3406	[1]	SPOOL
24.	2P-1951	[1]	STOP
25.	2P-1950	[1]	COVER
26.	5S-7906	[1]	STOP
27.	7B-3028	[1]	SCREW
28.	8M-8128	[1]	SLUG
29.	8H-5244	[1]	DOWEL
30.	2M-7041	[1]	SLUG
31.	1P-9620	[1]	RING
	C		INDICATES CHANGE

#UEG0266S0179

DRIVE SHAFT

c146217 UEG0266S

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Parts for your 815 SOIL COMPACTOR:

CATERPILLAR SIS

Part No	Qty	Parts name
4K-7426	[1]	COVER
5K-2595	[1]	SEAL
3K-0196	[1]	GUARD
		(Part of Yoke Assem. 7K449)
2H-3088	[1]	SEAL
4K-7295	[1]	WASHER
0S-1595	[3]	BOLT
4K-7294	[1]	LOCK
7K-0449	[1]	YOKE ASSEM.
5K-4301	[12]	BOLT
4S-8743		LOCKWIRE 5 Feet
5K-4298	[1]	SHAFT ASSEM.
6H-2577	[2]	SPIDER AND BEARING ASSEM.
4H-3947	[2]	FITTING
6H-2578	[8]	SEAL ASSEM.
		(1/2 of each in each Spider and Bearing Assem. 6H2577)
0S-1579	[8]	BOLT
5K-4299	[1]	YOKE
6K-4599	[1]	YOKE ASSEM.
3K-0986	[1]	PLUG
		(Part of Yoke Assem. 6K4599)
3K-0196	[1]	GUARD
7K-7613 Y	[1]	JOINT ASSEM.
		(Separate Illustration)
0S-0484	[8]	BOLT (2.25 in. long)
3B-4508	[8]	LOCKWASHER
3B-8486	[1]	FITTING
1A-5822	[4]	BOLT
1D-4719	[4]	NUT
3B-4508	[4]	LOCKWASHER
8B-2540	[2]	CORK
4K-7420	[1]	RETAINER
5F-3144	[1]	SEAL
8F-3170	[1]	BEARING
5K-2595	[1]	SEAL
0S-1591	[2]	BOLT
3B-4506	[2]	LOCKWASHER
3K-0196	[1]	GUARD
5K-0737	[1]	TUBE
3B-9054	[2]	FITTING
8F-8996	[2]	NUT
		(1 in each Fitting 3B9054)
8K-5453	[1]	SHAFT ASSEM.
3B-8486	[2]	FITTING
1V-3639 C	[1]	SPIDER AND BEARING ASSEM.
4H-3947	[2]	FITTING
		(Part of 1V3639 Assem.)
7K-0548	[4]	BOLT
4S-8743		LOCKWIRE 2 Feet
3K-0196	[1]	GUARD
7K-0450	[1]	YOKE ASSEM.
3K-0986	[1]	PLUG
		(Part of Yoke Assem. 7K4501)
C		INDICATES CHANGE
Y		SEPARATE ILLUSTRATION