2P9613 AIR COMPRESSOR GROUP ENGINE SERIAL NO.8Z1 TO 8Z8856 AND 8Z8931 TO 8Z9930 INCLUSIVE 2P9614 AIR COMPRESSOR PARTS ARE SHOWN ON PAGE 54 12G

BASIC ENGINE

AIR COMPRESSOR GP

0. 2P-9613 AIR COMPRE
1. 2P-9614 AIR COMPRE
2. 7N-9912 AIR COMPRE
3. 1W-6473 AIR COMPRE
4. 7W-8399 AIR COMPRE
5. 7W-8399 AIR COMPRE
6. 2W-9270 AIR COMPRE
7. 2P-7797 LINES GP-A
8. 7N-9919 LINES GP-A
9. 7W-8411 LINES GP-A
0. INFORMATION

MOTOR GRADER 12G MOTOR GRADER 61M
12G MOTOR GRADER 61M07711-12026 (MACHINE) POWERED BY 3306 ENGINE SEBP1268 12G 61M (1973)

BASIC ENGINE

AIR COMPRESSOR GP

2P-9613 AIR COMPRESSOR GP

2P-9614 AIR COMPRESSOR GP

7N-9912 AIR COMPRESSOR GP

1W-6473 AIR COMPRESSOR GP

#SEBP12680140

2P-9613: AIR COMPRESSOR GP

AIR COMPRESSOR GP

2P9613 AIR COMPRESSOR GROUP
ENGINE SERIAL NO.8Z1 TO 8Z8856 AND 8Z8931 TO 8Z9930 INCLUSIVE
2P9614 AIR COMPRESSOR PARTS ARE SHOWN ON PAGE 54

c174484 SEBP1268

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Parts for your 12G MOTOR GRADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	2P-9614 CY	[1]	COMPRESSOR
			(Separate Illustration)
2.	2P-0220	[1]	GASKET
3.	1A-1135	[2]	BOLT 5.08 cm(2 in.)long
			-OR-
	0S-1589 C	[2]	BOLT 4.45 cm(1.75 in.) long
4.	0S-1591	[3]	BOLT 3.81 cm(1.5 in.) long
			-OR-
	3B-1915 C	[3]	BOLT 3.49 cm(1.375 in.) long
	C		INDICATES CHANGE
	Y		SEPARATE ILLUSTRATION

#SEBP12680141

2P-9614: AIR COMPRESSOR GP

AIR COMPRESSOR GP

2P9614 AIR COMPRESSOR GROUP
ENGINE SERIAL NO.8Z1 TO 8Z8856 AND 8Z8931 TO 8Z9930 INCLUSIVE
PART OF 2P9613 AIR COMPRESSOR GROUP SHOWN ON PAGE 53

c227968 SEBP1268

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Parts for your 12G MOTOR GRADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	2P-9615	[1]	GOVERNOR ASSEM.
2.	1B-4203	[4]	NUT
3.	7N-2833 C	[1]	HEAD ASSEM.
4.	8A-2252 L	[1]	PISTON AS
			-OR-
	105-9218 N	[1]	PISTON AS
5.	8A-2251	[1]	LINER
6.	8A-2248	[1]	ROD ASSEM.
7.	2P-7849	[1]	CRANKCASE
8.	9F-2247	[1]	PLUG
9.	2P-7850	[1]	CRANKSHAFT
10.	2F-5721	[1]	BEARING
11.	1P-5480	[1]	COVER ASSEM.
12.	2P-7848	[1]	BRACKET
13.	4N-5224	[1]	COVER
14.	4N-5225	[1]	GASKET
			THE FOLLOWING REPAIR KITS ARE AVAILABLE:
	8A-2250 L	[1]	KIT (Includes 5 Piston rings)
	105-9236 N	[1]	KIT-PISTON RING
	8A-2305 C	[1]	KIT (Governor-Major Repair)
			(Includes Diaphragms, Followers, Valve, Guide, Plunger, "O" Ring, Spring & Hardware)
	7N-2834 C	[1]	KIT (Compressor-Major Repair)
			(Includes Valves, Bearings, Gaskets, Retaining Rings, Strap, Springs, Shims, "O" Ring & Hardware)
	1P-6059	[1]	KIT (Unloader Valve)
			(Includes Cap, Clip, Washer, Spring, Plunger, & "O" Ring)
	4N-4027	[1]	KIT (Governor Lines)
			(Includes Elbow Assem., Pipe, Fitting, & Washer)
	C		INDICATES CHANGE
	L		KIT MARKED L SERVICES PART MARKED L
	N		KIT MARKED N SERVICES PART MARKED N

#SEBP12680142

7N-9912: AIR COMPRESSOR GP

AIR COMPRESSOR GP

7N9912 AIR COMPRESSOR GROUP
ENGINE SERIAL NO. 8Z8857-8Z8930 AND 8Z9331-8Z32189
1W6473 AIR COMPRESSOR PARTS ARE SHOWN ON PAGE 54B

c406267 SEBP1268

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Parts for your 12G MOTOR GRADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	1W-6473 YR	[1]	AIR COMPRESSOR GP
2.	5K-9243	[1]	ELBOW-FLARED
3.	3H-5932 C	[2]	BOLT
	1D-4716	[2]	NUT-FULL
4.	9M-1974 C	[3]	WASHER
5.	7N-9195	[1]	GOVERNOR AS
6.	2S-2923	[1]	COVER-GOVERNOR
7.	1D-4538 C	[2]	BOLT
8.	2W-1088 C	[1]	BRACKET
9.	5N-9111	[1]	TUBE AS
10.	5K-9241	[1]	ELBOW
11.	1A-1135	[2]	BOLT
	4D-3704	[2]	WASHER-HARD
12.	0S-1591	[3]	BOLT
	5M-2894	[3]	WASHER
13.	2P-0220	[1]	GASKET-PUMP
14.	9F-2247 C	[5]	PLUG
15.	7K-3377 C	[2]	PIPE
16.	3H-4656 C	[2]	SPACER
17.	5F-5434	[1]	VENT AS
18.	3B-8822 C	[1]	ELBOW
19.	9N-0869 C	[1]	WASHER
			THE FOLLOWING REPAIR
			KIT IS AVAILABLE:
	9M-0402	[1]	KIT-GOVERNOR OVERHAUL
			(CONSISTS OF GROMMETS,
			SPRING, FILTER, VALVE
			AND COVER)
	C		CHANGE FROM PREVIOUS TYPE
	R		REMFG PART MAY BE AVAILABLE
	Y		SEPARATE ILLUSTRATION

#SEBP12680143

1W-6473: AIR COMPRESSOR GP

AIR COMPRESSOR GP

1W6473 AIR COMPRESSOR GROUP
ENGINE SERIAL NO. 8Z8857-8Z8930 AND 8Z9331-8Z32189
PART OF 7N9912 AIR COMPRESSOR

c338670 SEBP1268

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Parts for your 12G MOTOR GRADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	8S-4583	[8]	BOLT-HEX HEAD
2.	8S-4365	[1]	FITTING
	1S-7107	[1]	GASKET
3.	8S-4581	[1]	CYLINDER HEAD AS
4.	8S-7599	[2]	SEAT-VALVE
5.	1A-2850	[2]	STUD
	1B-4202	[2]	NUT
6.	4L-7318	[8]	LOCKWASHER
7.	9M-0397	[1]	ADAPTER-INLET
	9M-0385	[1]	PLATE-STRAINER
	6L-1884	[2]	GASKET-STRAINER
8.	2B-2695	[2]	BOLT
9.	3J-5390	[2]	PLUG
10.	8S-1982	[1]	GASKET-HEAD
11.	8S-4582	[1]	CYLINDER BLOCK AS
12.	3K-5762	[1]	PLUG
13.	9M-0382	[2]	BUSHING
14.	9M-0381	[2]	SEAT-INLET VALVE
15.	5M-6213	[2]	PLUG
16.	2P-8670	[1]	CRANKSHAFT
17.	1W-2804 C	[2]	PISTON AS-COMPRESSOR (EACH INCLUDES)
	1W-2803	[2]	PLUG
18.	1S-9875	[1]	KIT-PISTON RINGS (8 RINGS)
19.	0L-1351	[6]	BOLT
	3B-4506	[6]	LOCKWASHER
20.	1F-0006	[1]	GASKET
21.	8S-1978	[1]	COVER AS
22.	1S-9867	[1]	BEARING-SLEEVE
23.	5M-6214	[1]	PLUG-PIPE
24.	4M-0061	[4]	BOLT
25.	5M-6509	[1]	SEAL-O-RING
26.	4M-5281	[6]	BOLT
	3B-4504	[6]	LOCKWASHER
27.	7W-6494 C	[1]	GASKET-COVER
28.	1W-6472	[1]	CRANKCASE
29.	9L-1518	[2]	WASHER-THRUST
30.	1S-9873	[2]	ROD AS-CONNECTION (EACH INCLUDES)
31.	9M-5181	[2]	BOLT
	2A-5328	[2]	LOCK
32.	4N-3982 J	[1]	BEARING
33.	4N-3983 J	[1]	BEARING
	4N-3984 J	[1]	BEARING
	4N-3985 J	[1]	BEARING

			THE FOLLOWING REPAIR
			KIT IS AVAILABLE:
	1S-9874	[1]	KIT-COMPRESSOR VALVES
			(INCL ELEMENT, GUIDES,
			PISTONS, PLUNGERS, ETC.)
			J-REQUIRED TO MAKE A
			COMPLETE BEARING
	C		CHANGE FROM PREVIOUS TYPE

#SEBP12680144

7W-8399: AIR COMPRESSOR GP

AIR COMPRESSOR GP

7W8399 COMPRESSOR GP
S/N 8Z3191-57234
2W9270-PAGE 54F

c345381 SEBP1268

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Parts for your 12G MOTOR GRADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	2W-9270 YR	[1]	AIR COMPRESSOR GP
2.	2P-0220	[1]	GASKET-PUMP
3.	0S-1589	[2]	BOLT
4.	3B-1915	[3]	BOLT
5.	9M-0397	[1]	ADAPTER-INLET
6.	2B-2695	[2]	BOLT
7.	9M-1974	[2]	WASHER
8.	4L-7318	[2]	LOCKWASHER
9.	7N-9195	[1]	GOVERNOR AS
	2S-2923	[1]	COVER-GOVERNOR
10.	5F-5434	[1]	VENT AS
11.	9F-2247	[5]	PLUG
12.	8M-7065	[1]	GASKET-AIR INLET
13.	6L-1883	[1]	GASKET-GOVERNOR
14.	1D-4540	[2]	BOLT

			THE FOLLOWING REPAIR
			KIT IS AVAILABLE:
	9M-0402	[1]	KIT-GOVERNOR OVERHAUL
			(INCL GROMMETS, FILTER,
			SPRING, VALVE, COVER
			AND RING)
	R		REMFG PART MAY BE AVAILABLE
	Y		SEPARATE ILLUSTRATION

#SEBP12680145

7W-8399: AIR COMPRESSOR GP

AIR COMPRESSOR GP

7W8399 AIR COMPRESSOR GP
S/N 8Z57235-UP
2W9270-PAGE 54F

c540270 SEBP1268

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Parts for your 12G MOTOR GRADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	7E-8541 YR	[1]	AIR COMPRESSOR GP
2.	2P-0220	[1]	GASKET-PUMP
3.	0S-1589	[2]	BOLT
4.	3B-1915	[3]	BOLT
5.	9M-0397	[1]	ADAPTER-INLET
6.	2B-2695	[2]	BOLT
7.	9M-1974	[4]	WASHER-HARD
8.	1D-4540	[2]	BOLT
9.	6I-1240 J	[1]	GOVERNOR AS
	2S-2923	[1]	COVER-GOVERNOR
10.	5F-5434	[1]	VENT AS
11.	8T-6757	[5]	PLUG-PIPE
12.	8M-7065	[1]	GASKET-AIR INLET
13.	6L-1883	[1]	GASKET-GOVERNOR

			THE FOLLOWING REPAIR
			KIT IS AVAILABLE:
	9M-0402 J	[1]	KIT-GOVERNOR OVERHAUL
			(INCL GROMMETS, FILTERS,
			SPRING, VALVE, COVER
			RING & GASKET)
	R		REMFG PART MAY BE AVAILABLE
	Y		SEPARATE ILLUSTRATION

#SEBP12680146

2W-9270: AIR COMPRESSOR GP

AIR COMPRESSOR GP

2W9270 COMPRESSOR GP-AIR
ENGINE S/N 8Z32188-UP
PART OF 7W8399 COMPRESSOR

c489432 SEBP1268

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Parts for your 12G MOTOR GRADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	7C-0561	[1]	CRANKCASE AS
2.	7C-0562	[1]	CRANKSHAFT-COMPRESSOR
3.	7C-0563	[1]	ROD & PISTON AS
4.	7C-0564	[1]	COVER AS-END
5.	7C-0565	[1]	SEAL-END COVER
6.	2B-2695	[4]	BOLT
7.	3B-4505	[8]	LOCKWASHER
8.	7C-0566	[2]	BEARING
9.	7C-0577	[1]	GASKET-CYLINDER HEAD
10.	7C-0576	[1]	CYLINDER HEAD AS
11.	1D-4540	[4]	BOLT
12.	7C-0567	[1]	COVER-BOTTOM
13.	0S-1617	[4]	BOLT
14.	9L-1518	[2]	WASHER-THRUST
15.	5M-6214	[1]	PLUG-PIPE
16.	7C-0568	[1]	GASKET-BOTTOM COVER










			THE FOLLOWING REPAIR
			KITS ARE AVAILABLE:
	7E-9918	[1]	KIT-AIR COMPRESSOR
			(INCL PISTON AS,
			STOP AS, SPRINGS,
			GASKETS, VALVES, SEATS
			AND STOP)
	7C-0570	[1]	KIT-PISTON RINGS
			(INCL RINGS)
	7C-0571	[1]	KIT-UNLOADER
			(INCL PISTON AS
			AND STOP AS)

#SEBP12680147

2P-7797: LINES GP-AIR COMPRESSOR

LINES GP-AIR COMPRESSOR

2P7797 AIR COMPRESSOR LINES GROUP
ENGINE SERIAL NO.8Z1 TO 8Z8856 AND 8Z8931 TO 8Z9330 INCLUSIVE

c317385 SEBP1268

2P7797 LINES GP-AIR COMPRESSOR Parts scheme

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Parts for your 12G MOTOR GRADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	5K-9248	[2]	CONNECTOR
2.	2P-6210	[1]	TUBE ASSEM.
3.	5K-9237	[2]	ELBOW
4.	3B-7255	[1]	BUSHING
5.	1P-0210	[1]	ELBOW
6.	2P-2698	[1]	TUBE ASSEM.
7.	6K-8079	[1]	CONNECTOR
8.	2P-2706	[1]	TUBE ASSEM.
9.	5K-9241 C	[1]	ELBOW
10.	6N-8534 C	[1]	TUBE ASSEM.
11.	5K-9243	[1]	ELBOW
	C		INDICATES CHANGE

#SEBP12680148

7N-9919: LINES GP-AIR COMPRESSOR

LINES GP-AIR COMPRESSOR

7N9919 LINES GROUP-AIR COMPRESSOR
ENGINE SERIAL NO. 8Z8857 TO 8Z8930 & 8Z9331 TO 8Z28327 INCLUSIVE

c182241 SEBP1268

7N9919 LINES GP-AIR COMPRESSOR Parts scheme

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Parts for your 12G MOTOR GRADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	5K-9237	[3]	ELBOW
2.	2P-6229	[1]	TUBE ASSEM.
3.	5K-9248	[1]	CONNECTOR
	3B-7255	[1]	BUSHING
4.	5K-9240	[2]	ELBOW
5.	2P-7761	[1]	TUBE ASSEM.
6.	2P-7762	[1]	TUBE ASSEM.
7.	5M-6213	[2]	PLUG
8.	9L-5116	[1]	HOSE ASSEM.
9.	8L-6557	[1]	CONNECTOR
10.	4S-6399	[1]	CONNECTOR
11.	7B-0192	[1]	CROSS
12.	3B-7764	[1]	BUSHING
	3B-7738	[1]	NIPPLE

#SEBP12680149

7W-8411: LINES GP-AIR COMPRESSOR

LINES GP-AIR COMPRESSOR

7W8411 LINES GP-AIR COMPRESSOR
S/N 8Z57237-UP
ALSO AN ATTACHMENT

c499937 SEBP1268

7W8411 LINES GP-AIR COMPRESSOR Parts scheme

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Parts for your 12G MOTOR GRADER:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	5K-9237	[4]	ELBOW
2.	032-1269 C	[1]	ELBOW-FLARED
3.	3B-7255	[3]	BUSHING
4.	7W-9553	[1]	TUBE AS-OUTLET
5.	4W-1309 I	[1]	HOSE AS
6.	7E-6796	[1]	TUBE AS
7.	6K-1972	[1]	ELBOW-FLARED
8.	9N-3040 I	[1]	HOSE AS-END
9.	2N-1287	[1]	ELBOW-FLARED
10.	9L-5254 C	[1]	ELBOW
11.	3B-7764 CB	[1]	BUSHING
	B		USE AS REQUIRED
	C		CHANGE FROM PREVIOUS TYPE
	I		SEE HOSE FABRICATION GUIDE