8D9420 EMERGENCY AND PARKING BRAKE CONTROL GROUP-Field Installation-Part 1 of 3 8J8761 Valve parts are shown on Page 89 12F

BRAKING SYSTEM

CONTROL GP

0. 8D-9420 EMERGENCY
1. 8D-9420 EMERGENCY
2. 8D-9420 EMERGENCY

ACCUMULATOR GP

3. 8J-8761 ACCUMULATO
4. 7D-3476 ACCUMULATO

VALVE GP

5. 8D-8370 VALVE GROU

COOLING SYSTEM

RADIATOR GP

6. 6D-8930 RADIATOR S

POWER TRAIN

WHEEL GP

7. 5D-4610 FRONT WHEE
8. 5D-9790 FRONT WHEE

CAP GP-HUB

9. 3D-2329 HUB CAP
0. INFORMATION

MOTOR GRADER 12F MOTOR GRADER 89H
NO. 12F MTR. GRADER 89H01538-UP (MACHINE) UEG0756S 12F 89H (1968)

BRAKING SYSTEM

CONTROL GP

8D-2490 BRAKE CONTROL GROUP

8D-9420 EMERGENCY AND PARKING BRAKE CONTROL GROUP

6D-8200 CLUTCH AND BRAKE CONTROL

#UEG0756S0110

8D-9420: EMERGENCY AND PARKING BRAKE CONTROL GROUP

EMERGENCY AND PARKING BRAKE CONTROL GROUP

8D9420 EMERGENCY AND PARKING BRAKE CONTROL GROUP-Field Installation-Part 1 of 3
8J8761 Valve parts are shown on Page 89

c141659 UEG0756S

8D9420 EMERGENCY AND PARKING BRAKE CONTROL GROUP Parts scheme

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Parts for your 12F MOTOR GRADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	7D-5957 H	[1]	HOSE ASSEM.
	9S-0247		HOSE 59.6"
2.	8S-6389	[1]	COUPLING ASSEM. (90 degrees)
3.	3S-7166	[2]	SLEEVE
4.	4S-7485	[1]	STEM ASSEM. (90 degrees)
5.	4B-9302	[2]	CLIP
6.	8D-2217	[1]	PLATE
7.	0S-1591	[2]	BOLT
8.	3B-4506	[5]	LOCKWASHER
9.	8S-9089	[3]	BOLT
	3B-4508	[3]	LOCKWASHER
	3H-7654	[3]	WASHER
10.	0S-1588	[2]	BOLT
11.	6D-0988	[1]	FLANGE
	5F-7054	[1]	SEAL
12.	0L-1143	[1]	BOLT
	6B-2882	[1]	SPACER (.312" Thick)
	3S-8712	[1]	SPACER (1.19" Thick)
13.	6M-8604	[1]	CLAMP
14.	4D-0622	[1]	PLATE
15.	4S-6399	[1]	CONNECTOR
16.	3L-6521	[1]	TEE
17.	7D-5958	[1]	HOSE ASSEM.
	9S-0247 H		HOSE 127.5"
18.	3S-9432	[1]	STEM ASSEM. (90 degrees)
19.	3S-7166	[1]	SLEEVE
20.	5S-5287	[1]	STEM ASSEM. (45 degrees)
21.	5F-1678	[2]	SEAL
22.	4F-7391	[1]	SEAL
23.	8J-8761 Y	[1]	VALVE GROUP
			(Separate Illustration)
24.	030-7946	[1]	ELBOW
25.	7D-5961	[1]	HOSE ASSEM. (62 in. long)
26.	8D-9364	[1]	HOSE ASSEM.
	9S-0247 H		HOSE 55.6 in.
	3S-7165	[1]	STEM ASSEM. (Straight)
27.	3S-7166	[2]	SLEEVE
28.	4S-7485	[1]	STEM ASSEM. (90 degrees)
29.	030-7957	[1]	TEE
30.	3J-7354	[2]	SEAL
	H		ORDER BY THE INCH
	Y		SEPARATE ILLUSTRATION

#UEG0756S0111

8D-9420: EMERGENCY AND PARKING BRAKE CONTROL GROUP

EMERGENCY AND PARKING BRAKE CONTROL GROUP

8D9420 EMERGENCY AND PARKING BRAKE CONTROL GROUP-Field Installation-Part 2 of 3
7D3476 and 8D8370 Valve parts are shown on Page 90

c141660 UEG0756S

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Parts for your 12F MOTOR GRADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	7D-8615	[1]	HOSE ASSEM. (52" long overall)
2.	032-1268	[1]	ELBOW
	6B-5072	[1]	BUSHING
3.	7D-5363	[2]	ADAPTER
4.	6K-9194	[2]	ELBOW
5.	053-0700	[1]	TEE
6.	5D-9522	[1]	UNION
7.	052-0572	[1]	TEE
8.	8D-8370 Y	[1]	VALVE GROUP
			(Separate Illustration)
9.	7D-3476 Y	[1]	ACCUMULATOR GROUP
			(Separate Illustration)
10.	6D-5967	[6]	SHIM
	6D-5968	[6]	SHIM
11.	9D-0657	[1]	HOSE ASSEM. (67.00 in. long)
12.	001-9440	[1]	CONNECTOR
13.	7D-1782	[1]	TUBE ASSEM.
14.	7D-1774	[2]	CLAMP
15.	2K-6061	[2]	SCREW
	1D-4717	[2]	NUT
16.	3B-4506	[4]	LOCKWASHER
17.	7D-8543	[1]	BOX ASSEM.
	5D-8412	[4]	SCREW
18.	7K-0899	[1]	GROMMET
19.	7D-8769	[1]	SWITCH
20.	6L-9781	[1]	CONNECTOR
21.	8D-6992	[1]	HOSE ASSEM. (76" long overall)
22.	3S-2093	[10]	STRAP
23.	2B-3243	[1]	CLIP
24.	7D-9769	[1]	HOSE ASSEM. (32" long overall)
25.	4D-6988	[1]	CLIP
26.	7D-9771	[1]	HOSE ASSEM. (84" long overall)
27.	5B-8978	[1]	TEE
28.	7D-8793	[1]	ELBOW
29.	7B-3235	[4]	BOLT
	3B-4508	[4]	LOCKWASHER
30.	1P-9962	[1]	PLATE
31.	4B-4158	[4]	SCREW
32.	7D-7248	[1]	BRACKET ASSEM.
33.	2A-4639	[2]	BOLT
34.	030-7946	[1]	ELBOW
	3J-7354	[1]	SEAL
35.	7D-9766	[2]	BOLT
	7D-9751	[2]	SPACER
36.	8D-2413	[1]	CYLINDER ASSEM.
37.	7D-7291	[1]	RETAINER ASSEM.
38.	7D-2148	[1]	BOOT
39.	5B-1909	[1]	ROD
40.	9M-6020	[1]	PIN
	3B-4618	[1]	COTTER PIN
41.	7D-9392	[1]	LEVER
42.	7D-7173	[1]	SUPPORT
43.	2R-6806	[1]	CONNECTOR
	3J-1907	[1]	SEAL
44.	7D-9844	[1]	HOSE ASSEM. (33" long overall)
45.	5F-1678	[1]	SEAL (.984 in. I.D.)
	4F-7391	[1]	SEAL (1.296 in. I.D.)
			THE FOLLOWING REPAIR KIT IS AVAILABLE:
	8D-3213	[1]	KIT (Seal)
			(For 8D2413 Cylinder)
	Y		SEPARATE ILLUSTRATION

#UEG0756S0112

8D-9420: EMERGENCY AND PARKING BRAKE CONTROL GROUP

EMERGENCY AND PARKING BRAKE CONTROL GROUP

8D9420 EMERGENCY AND PARKING BRAKE CONTROL GROUP-Field Installation-Part 3 of 3

c141661 UEG0756S

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Parts for your 12F MOTOR GRADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	7F-8092	[1]	KNOB
2.	8D-2226	[1]	LEVER ASSEM.
3.	5H-6188	[1]	BUSHING
4.	7D-9374	[3]	SPACER
5.	8D-2222	[1]	PIN
6.	9S-1303	[4]	PIN
	3B-4609	[4]	COTTER PIN
7.	8D-2223	[1]	YOKE
8.	0L-2070	[1]	BOLT
	9L-9132	[1]	WASHER
9.	7M-8426	[1]	SPRING
10.	1D-4717	[5]	NUT
	3B-4506	[5]	LOCKWASHER
11.	3D-6649	[2]	CLAMP
12.	6D-6768	[1]	BLOCK
13.	8D-2225	[1]	PIN ASSEM.
	5H-6188	[1]	BUSHING
14.	4F-3597	[1]	SCREW
	4B-2043	[1]	NUT
15.	6D-7464	[1]	PLATE
16.	5D-0019	[1]	BULB
17.	4D-9981	[1]	LENS
18.	7D-7388	[1]	SOCKET AND WIRE ASSEM.
19.	4S-1988	[1]	TERMINAL
20.	4D-9982	[1]	SPRING
21.	5D-9247	[1]	BRACKET ASSEM.
22.	7D-7411	[1]	WIRE ASSEM.
	3D-4467	[1]	TERMINAL
23.	7F-9224	[1]	TERMINAL
24.	7D-2514	[1]	CONDUIT
25.	1S-9886	[2]	CLIP
26.	7D-8703	[1]	WIRE ASSEM.
27.	4S-1988	[1]	TERMINAL
28.	4L-3916	[1]	TERMINAL
29.	8D-2333	[1]	COVER ASSEM.
30.	8M-2772	[2]	CLIP
31.	9D-0403	[1]	HARNESS ASSEM.
	4S-1988	[1]	TERMINAL
32.	4L-3916	[3]	TERMINAL
33.	7F-9224	[1]	TERMINAL
34.	2B-2694	[2]	BOLT
	1D-4716	[2]	NUT
	3B-4505	[2]	LOCKWASHER
35.	3D-5878	[2]	YOKE
	1A-8285	[3]	NUT
36.	5K-2400	[1]	SPRING (Inner)
37.	3S-3018	[1]	SPRING (Outer)
38.	8D-2331	[1]	RETAINER
39.	0S-1590	[2]	BOLT
40.	8D-2356	[1]	PLATE ASSEM.
41.	8D-2342	[1]	RETAINER
42.	0S-1595	[2]	BOLT
	1D-4719	[2]	NUT
	3B-4508	[2]	LOCKWASHER
43.	8D-5903	[1]	BLOCK
44.	9D-0174	[1]	HARNESS ASSEM.
	4S-1988	[1]	TERMINAL
	4L-3916	[1]	TERMINAL
45.	7F-9224	[2]	TERMINAL
46.	8D-2328	[1]	CABLE ASSEM.
47.	8D-2218	[1]	PLATE
48.	3B-1915	[2]	BOLT
49.	8D-2239	[1]	LEVER ASSEM.
	8D-3211	[1]	ROD
	5H-6188	[1]	BUSHING
50.	8D-3652	[1]	WIRE ASSEM.
	6D-9404	[1]	TERMINAL
	4S-1988	[1]	TERMINAL
51.	8D-3653	[1]	WIRE ASSEM.
	6D-9404	[1]	TERMINAL
	4L-3916	[1]	TERMINAL (Female)

#UEG0756S0113

8J-8761: ACCUMULATOR CHARGING VALVE

ACCUMULATOR CHARGING VALVE

8J8761 ACCUMULATOR CHARGING VALVE GROUP
Part of 8D2490 and 8D9420 Parking and Emergency Brake Control Groups shown on Pages 79, 82 and 86

c962847 UEG0756S

8J8761 ACCUMULATOR CHARGING VALVE Parts scheme

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Parts for your 12F MOTOR GRADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name	Comments

#UEG0756S0114

7D-3476: ACCUMULATOR GROUP

ACCUMULATOR GROUP

7D3476 ACCUMULATOR GROUP
Part of 8D9420 Emergency and Parking Brake Control Groups shown on Page 87

c139163 UEG0756S

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Parts for your 12F MOTOR GRADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	7D-7319	[1]	VALVE ASSEM.
	5L-4758	[1]	SEAL
2.	2H-6184	[1]	SEAL
3.	2H-3933	[2]	SEAL
4.	4D-0993	[2]	RING
5.	7D-7321	[1]	COVER

#UEG0756S0115

8D-8370: VALVE GROUP

VALVE GROUP

8D8370 VALVE GROUP
Part of 8D2490 and 8D9420 Parking and Emergency Brake Control
Groups shown on Pages 80, 83 and 87

c138689 UEG0756S

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Parts for your 12F MOTOR GRADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	7D-9295	[1]	ADAPTER
2.	3B-4506	[1]	LOCKWASHER
3.	8D-8256	[2]	RING
4.	8D-8255	[2]	SEAL

#UEG0756S0116

6D-8930: RADIATOR SUPPORT

RADIATOR SUPPORT

6D8930 RADIATOR SUPPORT

c104333 UEG0756S

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Parts for your 12F MOTOR GRADER:

CATERPILLAR SIS

Part No	Qty	Parts name
1A-2029	[2]	BOLT
3B-4506	[2]	LOCKWASHER
4B-4278	[2]	WASHER
2D-6412	[2]	WASHER
1F-4910	[1]	GRAB IRON
		(PART OF GUARD ASSEM. 6D8923)
4D-7978	[4]	BLOCK
2B-0947	[8]	BOLT
3B-4508	[8]	LOCKWASHER
0S-0509	[12]	BOLT
3B-4506	[12]	LOCKWASHER
0S-0509	[4]	BOLT
3B-4506	[4]	LOCKWASHER
4B-4278	[4]	WASHER
6D-8923	[1]	GUARD ASSEM.
		(RIGHT HAND SIDE OF MACHINE)
9F-2978	[7]	NUT (WELD)
		(PART OF GUARD ASSEM. 6D8923)
6H-1717	[12]	BOLT
3B-4508	[12]	LOCKWASHER
	[2]	BOLT
3B-4508	[2]	LOCKWASHER
4B-4280	[4]	WASHER
0S-0509	[5]	BOLT
3B-4506	[5]	LOCKWASHER
6D-8653	[1]	SHELL
0S-1585	[8]	BOLT
3B-4508	[8]	LOCKWASHER
6D-9254	[2]	BRACKET
6D-8953	[1]	BRACE
0S-1595	[2]	BOLT
3B-4508	[2]	LOCKWASHER
4B-4280	[2]	WASHER
1F-4910	[1]	GRAB IRON
		(PART OF GUARD ASSEM. 6D8924)
6D-8918	[1]	GUARD
4D-7979	[2]	STRIP
6D-8924	[1]	GUARD ASSEM.
		(LEFT HAND SIDE OF MACHINE)
0S-0509	[9]	BOLT
3B-4506	[9]	LOCKWASHER
9F-2978	[4]	NUT (WELD)
		(PART OF COVER ASSEM. 6D8984)
3H-0019	[2]	CLIP
9F-2978	[7]	NUT (WELD)
		(PART OF GUARD ASSEM. 6D8924)
6D-8925	[1]	TUBE
6D-8984	[1]	COVER ASSEM.
0S-1622	[8]	BOLT
3B-4508	[8]	LOCKWASHER

#UEG0756S0117

5D-4610: FRONT WHEELS AND TIRES

FRONT WHEELS AND TIRES

FRONT WHEELS AND TIRES (5D4610 N/S)-13.00 x 24 Tubeless Tires
Note: Quantities shown are those required for R.H. and L.H. sides

c78386 UEG0756S

5D4610 FRONT WHEELS AND TIRES Parts scheme

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Parts for your 12F MOTOR GRADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	2D-2567	[2]	FLANGE
2.	2D-2566	[2]	RING
3.	2D-2565	[2]	SEAL
4.	2D-8114	[16]	CLAMP
5.	4D-6171	[16]	NUT
6.	3B-8489	[2]	FITTING
7.	6D-0337	[2]	VALVE ASSEM.
	6D-0443	[2]	HOUSING ASSEM.
8.	2D-2633	[2]	CAP
	2D-2628	[2]	CORE
			(1 each in 6D443 Housing Assem.)
9.	2D-2631	[2]	NUT
	2D-2630	[2]	WASHER
10.	2D-2629	[2]	GROMMET
			(1 each in 6D337 Valve Assem.)
11.	5D-4593	[2]	WHEEL ASSEM.
12.	3D-3716	[2]	CUP
13.	5D-4582	[2]	SLEEVE
14.	1B-3925	[2]	CUP
			(1 each in 5D4593 Wheel Assem.)
15.	2D-5238	[16]	STUD
			(8 in each 5D4593 Wheel Assem.)
16.	2D-2568	[2]	BASE