8D8790 PARKING BRAKE CONTROL GROUP Serial No. 87V4353-Up and 82V870-Up 5D4382 and 5D470 Valve parts are shown on Page 168 and 168A 120G

BRAKING SYSTEM

CONTROL GP

0. 8D-8790 CONTROL GP

POWER TRAIN

VALVE GP

1. 7D-8075 VALVE AS

HYDRAULIC SYSTEM

VALVE GP

2. 8D-6833 AIR CONTRO

BRAKING SYSTEM

VALVE GP

3. Serial No. 87V1138 to 87V1430 inclusive and 82V668 to 82V688 inclusive
Part of 8D8790 Brake Control Group shown on Page 166" class=""> 4F-6941 RELEASE VA
4. 5D-4382 VALVE AS-A
5. 5D-0470 VALVE GP-Q
6. 2G-5680 VALVE GP

SERVICE EQUIPMENT AND SUPPLIES

BOX GP-TOOL

7. 9D-2700 TOOL BOX G
8. 9D-2700 TOOL BOX G

FRAME AND BODY

STEP GP

9. 9D-1395 STEP GP
0. INFORMATION

MOTOR GRADER 120G MOTOR GRADER 82V
120G MOTOR GRADER 82V00668-UP (MACHINE) POWERED BY 3304 ENGINE SEBP1045 120G 82V (1974)

BRAKING SYSTEM

CONTROL GP

8D-8790 CONTROL GP-PARKING BRAKE

8D-3320 LEANING WHEEL CYLINDER AND MOUNTING GROUP

#SEBP10450490

8D-8790: CONTROL GP-PARKING BRAKE

CONTROL GP-PARKING BRAKE

8D8790 PARKING BRAKE CONTROL GROUP
Serial No. 87V4353-Up and 82V870-Up
5D4382 and 5D470 Valve parts are shown on Page 168 and 168A

c223852 SEBP1045

8D8790 CONTROL GP-PARKING BRAKE Parts scheme

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Parts for your 120G MOTOR GRADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	6G-2260 C	[1]	ACTUATOR GROUP
			(Includes)
	8K-8467	[1]	SPRING
2.	1B-4206 C	[2]	NUT
3.	3B-4510	[4]	LOCKWASHER
4.	5K-0292	[1]	ROD END
5.	9S-1354 C	[1]	NUT
6.	4K-1540	[1]	PIN
	3B-4617	[1]	COTTER PIN
7.	8D-2205	[1]	BRACKET
8.	0S-1625	[2]	BOLT
	1D-4720 C	[2]	NUT
9.	9M-8406	[1]	CLIP
10.	5K-2408	[1]	NIPPLE
11.	5D-0470 Y	[1]	VALVE ASSEM. (relief)
			(Separate Illustration)
12.	5M-6213	[1]	PLUG
13.	7D-9708	[2]	BOLT
	0T-0431	[4]	WASHER
14.	5F-8494	[1]	SPRING
15.	0T-0883	[2]	WASHER
16.	9D-0948	[1]	BRACKET ASSEM.
			(Includes)
17.	9F-2978	[1]	NUT
18.	2D-2285	[1]	BOLT
	9F-5644	[1]	LOCKWASHER
19.	9D-0945	[1]	LEVER ASSEM.
			(Includes)
20.	5H-1514	[1]	PIN
21.	4H-6147 H	[2]	UNION (straight)
22.	2D-7325	[1]	TEE
23.	6D-1432	[1]	VALVE (check)
24.	8H-7696	[1]	FITTING
25.	5D-4382 Y	[1]	VALVE ASSEM. (air)
			(Separate Illustration)
26.	2M-8908	[1]	KNOB
27.	2G-3765	[1]	SPRING
28.	9D-0951	[1]	PLATE
29.	4D-2560	[1]	UNION
30.	7D-3024	[1]	HOSE ASSEM. 320.4 cm(126 in.)
31.	4S-7528	[1]	HOSE ASSEM. 81.28 cm(32 in.)
32.	5H-4778 H	[1]	UNION (90 degrees)
33.	4J-3914	[1]	UNION
34.	7J-8611	[1]	ELBOW
			THE FOLLOWING REPAIR KIT IS AVAILABLE:
	6G-2527	[1]	KIT (seal)
	H		USE AS REQUIRED
	Y		SEPARATE ILLUSTRATION
	C		INDICATES CHANGE

#SEBP10450491

7D-8075: VALVE AS

VALVE AS

7D8075 VALVE ASSEMBLY
Part of 9D5700 Service Brake Control Group shown on Page 164

c207457 SEBP1045

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Parts for your 120G MOTOR GRADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	7D-8074	[1]	PISTON AS
2.	4D-2304	[1]	BOLT
3.	4D-2303	[1]	WASHER
4.	7D-8073	[1]	SEAT
5.	5D-0768	[1]	SPRING
6.	7F-8268	[1]	SEAL-O-RING
7.	4D-2634	[1]	SPRING
8.	4D-2289	[1]	VALVE AS
	4D-2295	[1]	VALVE
9.	1S-3612	[1]	RETAINER-VALVE
10.	4D-2298	[1]	SPRING
11.	4D-2291	[1]	SPRING
12.	4D-2297	[1]	SEAL
13.	5D-8412	[1]	SCREW-ROUND HEAD
14.	5D-9702	[1]	SEAT
15.	4D-2293	[1]	WASHER
16.	4D-2292	[1]	DIAPHRAGM
17.	5M-2057	[1]	SEAL-O-RING
18.	004-1683 C	[1]	RING-SNAP
19.	4D-2305	[1]	RETAINER
	C		CHANGE FROM PREVIOUS TYPE

#SEBP10450492

8D-6833: AIR CONTROL VALVE GROUP

AIR CONTROL VALVE GROUP

8D6833 AIR CONTROL VALVE GROUP
Part of 8D8850 Service Brake Control Group shown on Pages
156 and 159

c152181 SEBP1045

8D6833 AIR CONTROL VALVE GROUP Parts scheme

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Parts for your 120G MOTOR GRADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	2G-0941	[1]	PISTON ASSEM.
			(Includes)
2.	5D-0768	[1]	SPRING
3.	7D-8073	[1]	SEAT
4.	4D-2304	[1]	BOLT
5.	4D-2303	[1]	WASHER
			THE FOLLOWING REPAIR KIT IS AVAILABLE:
	2G-0935	[1]	KIT (maintenance)
			(Includes Valves, Springs, Diaphragm, Seals, Seat, Screw, Washer and Lubricant)

#SEBP10450493

4F-6941: RELEASE VALVE ASSEMBLY

RELEASE VALVE ASSEMBLY

4F6941 RELEASE VALVE ASSEMBLY--2"
Serial No. 87V1138 to 87V1430 inclusive and 82V668 to 82V688 inclusive
Part of 8D8790 Brake Control Group shown on Page 166

c100117 SEBP1045

4F6941 RELEASE VALVE ASSEMBLY Parts scheme

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Parts for your 120G MOTOR GRADER:

CATERPILLAR SIS

Part No	Qty	Parts name
5F-2018	[1]	COVER
5F-2021	[1]	SEAT
5F-2019	[1]	DIAPHRAGM
5F-2017	[1]	BODY
5F-2022	[1]	SPRING
5D-5716	[1]	SEAL

#SEBP10450494

5D-4382: VALVE AS-AIR

VALVE AS-AIR

5D4382 AIR VALVE ASSEMBLY
Part of 8D8790 Brake Control Group shown on Pages 166, 166A and 166B

c95718 SEBP1045

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Parts for your 120G MOTOR GRADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	5D-7778	[1]	BOOT
2.	6H-9691	[1]	SEAL
3.		[1]	BODY
4.	5D-7780	[1]	SPRING
5.	4D-1138	[1]	VALVE
6.	4J-8527	[1]	STEM
7.	1H-1023	[1]	SEAL

#SEBP10450495

5D-0470: VALVE GP-QUICK RELEASE

VALVE GP-QUICK RELEASE

5D470 QUICK RELEASE VALVE GROUP
Serial No. 87V1431-Up and 82V689-Up. Part of 8D8790 Parking Brake Control
Group shown on Pages 166A and 166B

c90528 SEBP1045

5D0470 VALVE GP-QUICK RELEASE Parts scheme

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Parts for your 120G MOTOR GRADER:

CATERPILLAR SIS

Part No	Qty	Parts name
4B-1321	[4]	SCREW
5D-0863	[1]	DIAPHRAGM
5D-5716	[1]	SEAL

#SEBP10450496

2G-5680: VALVE GP

VALVE GP

2G5680 AIR CONTROL VALVE GROUP
Serial No. 87V2262-Up and 82V740-Up
Part of 2G5780 Brake Control Group shown on Page 164F

c216137 SEBP1045

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Parts for your 120G MOTOR GRADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	2B-2694	[3]	BOLT
	3B-4505	[3]	LOCKWASHER
2.	2G-8772 C	[1]	BOOT
3.	2G-6284	[1]	PLUNGER
4.	2G-6291	[1]	SCREW
5.	5B-3254	[1]	NUT
6.	2G-6286	[1]	SPACER
7.	5D-0768	[1]	SPRING
8.	2G-6287	[1]	COVER
			THE FOLLOWING REPAIR KIT IS AVAILABLE:
	2G-6285	[1]	VALVE KIT (air control)
			(Includes Diaphragm, Filter, Inlet & Exhaust Valve, Locknut, O-Rings, and Springs)
	C		INDICATES CHANGE

#SEBP10450497

9D-2700: TOOL BOX GP

TOOL BOX GP

9D2700 TOOL BOX GROUP
Serial No. 87V1138 to 87V2766 inclusive and 82V668 to 82V774 inclusive

c119606 SEBP1045

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Parts for your 120G MOTOR GRADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	3B-3427	[1]	BOX ASSEM.
2.	0L-1351	[4]	BOLT
	3B-4506	[4]	LOCKWASHER
	4B-4278	[4]	WASHER

#SEBP10450498

9D-2700: TOOL BOX GP

TOOL BOX GP

9D2700 TOOL BOX GROUP
Serial No. 87V2767-Up and 82V775-Up

c308905 SEBP1045

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Parts for your 120G MOTOR GRADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	3B-3427	[1]	BOX ASSEM.
2.	4L-6454 CB	[4]	BOLT
3.	1D-4717 CB	[2]	NUT
4.	9L-9132 CB	[6]	WASHER (PLAIN)
	5P-1075 C	[4]	WASHER (CONICAL)
6.	5P-8502 C	[1]	PADLOCK GROUP
	5P-8500 A	[2]	KEY
	A		NOT PART OF 9D2700 TOOL BOX GR
	B		USE AS REQUIRED
	C		INDICATES CHANGE

#SEBP10450499

9D-1395: STEP GP

STEP GP

9D1395 STEP GROUP

c168429 SEBP1045

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Parts for your 120G MOTOR GRADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	0S-1585 C	[12]	BOLT
	3B-4508	[12]	LOCKWASHER
2.	2G-1640 C	[2]	STEP ASSEM.
3.	9D-1274	[2]	STEP ASSEM.
			(Each Includes)
4.	9D-1273	[1]	CABLE ASSEM.
5.	9D-1269	[1]	PLATE
	C		INDICATES CHANGE