GOVERNOR VALVE D25C ARTICULATED TRUCK

BASIC ENGINE

AIR COMPRESSOR GP

0. GOVERNOR V

BRAKING SYSTEM

VALVE GP

1. QUICK RELE

AIR DRYER GP

2. AIR DRYER

VALVE GP

3. HAND CONTR
4. 6U-7706 PARK BRAKE

CONTROL GP

5. FOOT BRAKE
6. TREADLE GR

VALVE GP

7. RELAY VALV

ACTUATOR GP

8. SPRING BRA

LINES GP

9. HYDRAULIC
0. INFORMATION

ARTICULATED TRUCK D25C ARTICULATED TRUCK 9YC
D25C ARTICULATED DUMP TRUCK 9YC00001-01011 (MACHINE) POWERED BY 3306 ENGINE SEBP8428 D25C 9YC (1985)

BASIC ENGINE

AIR COMPRESSOR GP

7N-5642 AIR COMPRESSOR GP

1W-7146 AIR COMPRESSOR GP

6C-1049 LINES GP-AIR COMPRESSOR

GOVERNOR VALVE

#SEBP84280270

GOVERNOR VALVE

c922784 SEBP8428

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Parts for your D25C ARTICULATED TRUCK:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
	6U-5704	[1]	GOVERNOR VALVE COMPLETE, COMPRISING:
		[1]	BODY ASSEMBLY, COMPRISING:
1.		[1]	BODY
2.	H	[2]	FILTER
3.	H	[1]	COVER
4.	H	[1]	CIRCLIP
		[1]	ADJUSTING SCREW AND SPRING ASSEMBLY COMPRISING:
5.	1B-4427	[1]	JAM NUT
6.		[1]	ADJUSTING SCREW
7.		[1]	UPPER SPRING SEAT
8.		[1]	SPRING
9.		[2]	LOWER SPRING SEAT
10.		[1]	SPRING GUIDE
11.		[1]	EXHAUST STEM
12.	H	[1]	EXHAUST STEM SPRING
		[1]	PISTON ASSEMBLY, COMPRISING:
13.	H	[1]	''O'' RING
14.			WASHER
15.		[1]	PISTON
16.	H	[2]	''O'' RING
17.	H	[1]	VALVE SPRING
18.	H	[1]	INLET/EXHAUST VALVE
			ATTACHING PARTS:-
	1D-4541 CF	[2]	BOLT
	2U-2644 CF	[2]	NUT
	2U-5102 CF	[2]	WASHER
	C		INDICATES CHANGE
	H		ITEMS INCLUDED IN SERVICE KIT
	F		NOT SHOWN

#SEBP84280271

QUICK RELEASE VALVE GUARD

QUICK RELEASE VALVE GUARD
9YC332 - UP EXCLUDING 9YC342 TO 9YC351 (AND FIELD INSTALLED)

c922785 SEBP8428

None QUICK RELEASE VALVE GUARD Parts scheme

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Parts for your D25C ARTICULATED TRUCK:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	6U-8471	[1]	BRACKET ASSEMBLY
2.	6U-8474	[1]	GUARD
3.	1B-7182	[2]	BOLT
4.	3B-4505	[2]	LOCKWASHER
5.	1D-4716	[2]	NUT
6.	1A-0458	[2]	BOLT
7.	3B-4512	[2]	LOCKWASHER
8.	1B-4331	[2]	NUT
9.	1A-8063	[2]	BOLT 3/4" UNC X 2 1/2"
10.	3B-4512	[2]	LOCKWASHER 3/4"
			OR
11.	1D-4625	[2]	BOLT 7/8" UNC X 2 1/2"
12.	3B-4514	[2]	LOCKWASHER 7/8"

#SEBP84280272

AIR DRYER

c922786 SEBP8428

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Parts for your D25C ARTICULATED TRUCK:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
	5U-8222	[1]	AIR DRYER COMPLETE, INCLUDING:-
1.	J	[1]	CARTRIDGE
2.	K	[2]	JAMNUT
3.	KJ	[1]	BALL
4.	KJ	[1]	O-RING
5.	KJ	[1]	O-RING
6.	K	[2]	PLATE
7.	K	[1]	DESSICANT
8.	K	[1]	FILTER
9.	KJ	[1]	O-RING
10.	L	[1]	BALL
11.	L	[1]	O-RING
12.	L	[1]	SPRING
13.	L	[1]	SEALING WASHER
14.	2U-4296	[1]	END COVER ASSEMBLY, INCLUDING:-
15.	M	[1]	O-RING
16.	M	[1]	O-RING
17.	M	[1]	SPRING
18.	M	[1]	O-RING
19.	M	[1]	PURGE VALVE
20.		[1]	HEATING COIL
21.		[1]	SILENCER
22.	2U-3908 C	[1]	PLUG
23.	5U-9851	[1]	ELECTRICAL PLUG CONNECTION
24.	5U-3834	[1]	SAFETY VALVE
25.	3B-6773	[1]	ELBOW
			ATTACHING PARTS:-
	0S-1594 CF	[4]	BOLT
	2U-2560 F	[4]	NUT
	2U-2587 F	[4]	WASHER
			THE FOLLOWING SERVICE KITS ARE AVAILABLE:- 2G7182 CARTRIDGE KIT 2G7183 REFILL KIT 2G7181 CHECK VALVE KIT 2G7184 PURGE VALVE KIT
	J		ITEMS INCLUDED IN 2G7182 CARTR
	K		ITEMS INCLUDED IN 2G7183 REFIL
	L		ITEMS INCLUDED IN 2G7181 CHECK
	M		ITEMS INCLUDED IN 2G7184 PURGE
	C		INDICATES CHANGE
	F		NOT SHOWN

#SEBP84280273

HAND CONTROL VALVE

HAND CONTROL VALVE
TO SERIAL NO. 9YC283

c922787 SEBP8428

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Parts for your D25C ARTICULATED TRUCK:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
	5U-8316		HAND CONTROL VALVE, COMPRISING:-
1.	H	[1]	HANDLE CAP
2.	H	[2]	SNAP RING
3.		[1]	SPACER
4.	H	[1]	HANDLE
5.	H	[1]	LOCKING SLEEVE
6.		[1]	HANDLE SPRING
7.		[1]	STEM
8.		[1]	VALVE COVER
9.		[2]	SCREW
10.		[1]	TORSION SPRING
11.		[1]	PIN
12.		[1]	MOUNTING BRACKET
13.		[1]	GAGE GUIDE
14.		[1]	CAM FOLLOWER
15.	J	[1]	PLUNGER SPRING
16.	J	[2]	O-RING
17.		[1]	INLET VALVE SEAT
		[1]	PISTON ASSEMBLY, COMPRISING:-
18.	J	[1]	UPPER PISTON HALF
19.		[1]	INLET/EXHAUST VALVE
20.		[1]	LOWER PISTON HALF
21.	J	[1]	VALVE SPRING
22.		[1]	ADJUSTER SCREW
23.		[1]	GRADUATING SPRING
24.	J	[1]	O-RING
25.	J	[1]	O-RING
26.		[1]	TAB WASHER
27.		[1]	BODY
28.	J	[1]	PLUNGER
29.	J	[1]	O-RING
30.		[1]	CAM
31.	2U-4365	[1]	RUBBER COVER
	2U-5248 F	[4]	SCREW (ATTACHING PART)
	H		ITEMS INCLUDED IN SERVICE KIT
	J		ITEMS INCLUDED IN SERVICE KIT
	F		NOT SHOWN

#SEBP84280274

6U-7706: PARK BRAKE VALVE ASSEM.

PARK BRAKE VALVE ASSEM.

6U7706 PARK BRAKE VALVE ASSEM.
9YC284-UP

c922788 SEBP8428

6U7706 PARK BRAKE VALVE ASSEM. Parts scheme

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Parts for your D25C ARTICULATED TRUCK:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
	6U-1416		HAND CONTROL VALVE, COMPRISING:-
	2U-4367	[1]	TOP COVER AND LEVER ASSEMBLY, COMPRISING:
1.		[1]	TOP COVER
2.	2U-4369	[1]	CAM
3.	2U-4370	[1]	PIVOT SHAFT
4.	2U-4371	[1]	LEVER HANDLE
5.	2U-4372	[1]	ROLL PIN
6.	2U-4373	[1]	LOCKING SLEEVE
7.	2U-4374	[9]	RETURN SPRING
8.	2U-4375	[1]	SPRING RETAINER
9.	2U-4376	[1]	JAM NUT
11.	2U-4377	[3]	SCREW
12.	2U-4378	[3]	WASHER
13.	2U-4379	[3]	SLEEVE
		[1]	BASIC VALVE ASSEMBLY, COMPRISING:
14.		[1]	BODY
15.		[2]	ROLLER
16.		[2]	ROLLER PIN
17.		[2]	LEVER ARM
18.		[1]	LEVER ARM
19.		[1]	PIVOT ARM
20.		[1]	CENTRE PLUNGER
21.		[1]	RETURN SPRING
22.		[2]	LOCKING WASHER
23.		[2]	RETAINING SCREW
24.		[2]	ADJUSTING SCREW
25.		[2]	RETURN SPRING
26.		[2]	VALVE CARRIER
27.	H	[4]	O-RING
28.		[2]	PLUNGER
29.	H	[2]	PLUNGER O-RING
30.	H	[2]	SNAP RING
31.		[2]	PLUNGER GUIDE
32.	H	[2]	O-RING
33.		[2]	PLUNGER SNAP RING
34.	H	[2]	RETURN SPRING
35.	H	[2]	INLET/EXHAUST VALVE
36.		[4]	SPRING/SHIM/SEAT
37.	H	[2]	SPRING
38.	H	[2]	O-RING
39.	6U-7680	[1]	KNOB
			ATTACHING PARTS:-
	0S-1616 CF	[4]	SCREW
	2U-2541 CF	[4]	NUT
	8T-4205 CF	[4]	WASHER
	C		INDICATES CHANGE
	H		ITEMS INCLUDED IN SERVICE KIT
	F		NOT SHOWN

#SEBP84280275

FOOT BRAKE VALVE

c922789 SEBP8428

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Parts for your D25C ARTICULATED TRUCK:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
	5U-3837	[1]	DUAL BRAKE VALVE COMPLETE, COMPRISING:-
1.	2U-4250 Y	[1]	TREADLE GP (SEE PAGE 138)
		[1]	UPPER BODY ASSEMBLY, COMPRISING:-
2.	H	[1]	LOCKNUT
3.		[1]	SPRING GUIDE
4.	H	[1]	STEM SPRING
5.	H	[1]	SPRING SEAT NUT
6.	H	[1]	SPRING SEAT
7.		[1]	STEM
8.	H	[1]	RUBBER SPRING
9.	H	[1]	RETAINER
10.	H	[1]	VENT FILTER
11.		[1]	PRIMARY PISTON
12.	H	[1]	O-RING
13.	H	[1]	PISTON GUIDE
14.	H	[1]	PISTON RETURN SPRING
15.	H	[1]	RETAINING RING
16.	H	[1]	INLET/EXHAUST VALVE ASSEMBLY
17.		[1]	RELAY PISTON
18.	H	[1]	SPRING
19.	H	[1]	O-RING
20.	H	[1]	O-RING
21.		[1]	UPPER BODY
		[1]	LOWER BODY ASSEMBLY, COMPRISING:-
22.		[1]	LOWER BODY
23.		[4]	SCREW
24.		[4]	LOCKWASHER
25.		[1]	EXHAUST COVER
26.		[1]	SCREW
27.		[1]	WASHER
28.		[1]	DIAPHRAGM
29.	H	[1]	INLET/EXHAUST VALVE ASSEMBLY
30.		[1]	IDENTITY LABEL
31.	H	[1]	O-RING
32.	3B-4504	[4]	LOCKWASHER
33.	0S-1615	[4]	BOLT
	H		ITEMS INCLUDED IN SERVICE KIT
	Y		SEPARATE ILLUSTRATION

#SEBP84280276

TREADLE GROUP - FOOTBRAKE VALVE

c922790 SEBP8428

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Parts for your D25C ARTICULATED TRUCK:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
	2U-4250	[1]	TREADLE GROUP COMPLETE, COMPRISING:
1.		[1]	TREADLE COVER
2.		[1]	ROLLER
3.		[1]	PIN
4.		[1]	COTTER PIN
5.		[1]	TREADLE
6.		[1]	MOUNTING PLATE
7.	2U-4251	[1]	FULCRUM PIN
8.	2U-4252	[1]	PLUNGER
9.	2L-3605	[1]	TENSION PIN
10.	2U-4253	[1]	BOOT
11.	2U-4254	[1]	STOP BUTTON
12.	2B-2695	[3]	BOLT
13.	3B-4505	[3]	LOCKWASHER
14.	C	[3]	BOLT (EARLY MACHINES ONLY)
15.	2U-2541 C	[3]	NUT SELF LOCKING
16.	8T-4205 C	[3]	WASHER
	C		INDICATES CHANGE

#SEBP84280277

RELAY VALVE

c922791 SEBP8428

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Parts for your D25C ARTICULATED TRUCK:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
	2U-3013		RELAY VALVE COMPLETE, EACH COMPRISING:
1.	1B-1293	[4]	SCREW
2.	3B-4505	[4]	LOCKWASHER
3.		[1]	COVER
4.	H	[1]	SEAL
5.	2U-3326	[1]	PISTON SUB-ASSEMBLY, COMPRISING:
6.		[1]	RELAY PISTON
7.		[1]	EXHAUST VALVE SEAT
8.	2U-3329	[1]	SPRING
9.	H	[1]	SEAL
10.		[1]	BODY
11.	2U-3332	[2]	PLUG
12.	2U-3333	[1]	VALVE SUB-ASSEMBLY, COMPRISING:
13.		[1]	INLET-EXHAUST VALVE ASSY.
14.	H	[1]	VALVE RETAINER
15.	H	[1]	O-RING
16.	H	[1]	VALVE SPRING
17.		[1]	VALVE GUIDE
18.	H	[1]	O-RING
19.	H	[1]	RETAINING RING
20.	2U-3341	[1]	EXHAUST COVER
21.	2U-3342	[1]	EXHAUST CHECK
22.	3B-4502	[2]	LOCKWASHER
23.	2U-3343	[2]	SCREW
	2U-3344 F	[1]	LABEL
24.	0S-1618 C	[2]	BOLT
25.	2U-2644 C	[2]	NUT SELF LOCKING
26.	2U-5102 C	[2]	WASHER
	F		NOT SHOWN
	H		ITEMS INCLUDED IN SERVICE KIT
	C		INDICATES CHANGE

#SEBP84280278

SPRING BRAKE ACTUATOR

c922792 SEBP8428

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Parts for your D25C ARTICULATED TRUCK:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
	5U-6341		SPRING BRAKE ACTUATOR COMPLETE, EACH COMPRISING:-
1.	2U-4333	[1]	NON-PRESSURE PLATE ASSEMBLY, COMPRISING:-
2.		[1]	NON-PRESSURE PLATE
3.		[1]	STIFFENER PLATE
4.	3B-4510	[2]	LOCKWASHER
5.	6B-6683	[2]	NUT
6.	2U-4314	[1]	CLAMPING COMPRISING:-
7.		[2]	CLAMP RING
8.		[2]	BOLT
9.		[2]	NUT
10.		[2]	PACKING PIECE
13.	2U-4316	[1]	RETURN SPRING
14.	2U-4315	[1]	PUSH ROD
15.	H	[1]	DIAPHRAGM
16.	2U-4328	[1]	SPRING BRAKE ASSEMBLY, COMPRISING:
17.		[1]	PRESSURE PLATE ASSEMBLY, COMPRISING:
18.	2U-3514	[1]	SCREW
19.	2U-4329	[1]	PRESSURE PLATE
20.		[1]	CYLINDER CASE
21.	H	[1]	PUSH ROD SEAL
22.	2U-4330	[1]	PUSH ROD
24.		[1]	PUSH ROD COLLAR ASSEMBLY, COMPRISING:
25.	H	[1]	O-RING
26.	H	[1]	COLLAR
27.	H	[1]	O-RING
28.	H	[1]	SNAP RING
29.	H	[1]	PISTON SEAL
30.	H	[1]	PISTON WIPER
31.	H	[1]	ANTI-EXPLOSION WASHER, COMPRISING:
32.	2U-4334	[1]	PISTON
33.	2U-3510	[2]	THRUST WASHER
34.	H	[1]	SPRING
35.	2U-4331	[1]	HEAD
36.	H	[1]	SNAP RING
37.	J	[1]	O-RING
38.	4S-9191	[1]	WASHER
39.	2U-4332	[1]	RELEASE BOLT
40.	J	[1]	EXTERNAL BREATHER KIT
	H		ITEMS INCLUDED IN SERVICE KIT
	J		ITEMS INCLUDED IN SERVICE KIT

#SEBP84280279

HYDRAULIC BRAKE LINES - TRAILER

HYDRAULIC BRAKE LINES - TRAILER
9YC284 - UP

c922793 SEBP8428

None HYDRAULIC BRAKE LINES - TRAILER Parts scheme

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Parts for your D25C ARTICULATED TRUCK:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	7L-7262 C	[1]	ELBOW
2.	5U-9142	[1]	HOSE ASSEMBLY
3.	8M-0755 C	[1]	ADAPTOR
4.	005-4173 C	[1]	ELBOW, INCLUDING:
	2M-9780 C	[1]	O-RING
5.	5U-8590	[1]	HOSE ASSEMBLY
6.	2P-2204 C	[1]	BULKHEAD ELBOW
7.	6U-8403	[1]	HOSE ASSEMBLY
8.	5U-3936	[1]	HOSE ASSEMBLY
9.	4S-6399	[2]	ADAPTOR
10.	3B-7722	[1]	REDUCER
11.	6U-6752	[1]	HOSE ASSEMBLY
12.	8M-0506	[2]	ADAPTOR
13.	2U-0837	[1]	ELBOW
	C		INDICATES CHANGE