2N7759 ALTERNATOR ASSEMBLY--12 Volt, 55 Ampere Part of 3N2708 and 3N2709 Alternator Groups shown on Pages 94 & 95 3306

ELECTRICAL AND STARTING SYSTEM

ALTERNATOR GP-CHARGING

0. 2N-7759 ALTERNATOR

STARTING MOTOR GP

1. 1L-5011 VALVE GP-S

BASIC ENGINE

CLUTCH GP

2. 6L-6468 CLUTCH GP-
3. 2N-7078 CLUTCH GP
4. 2N-7078 CLUTCH GP

DRIVE GP-AUXILIARY

5. 3N-2081 DRIVE GP-A

AIR COMPRESSOR GP

6. 9L-5762 AIR COMPRE
7. 2P-1830 AIR COMPRE
8. 2P-7799 AIR COMPRE

ENCLOSURES, GUARDS AND BASES

ENCLOSURE GP

9. 3N-4891 HOOD & DAS
0. INFORMATION

INDUSTRIAL ENGINE 3306 INDUSTRIAL ENGINE 23C
3306 ENGINE 23C00740-00841 UEG0686S 3306 23C (1968)

ELECTRICAL AND STARTING SYSTEM

ALTERNATOR GP-CHARGING

5S-9088 ALTERNATOR GP-CHARGING

2N-6397 ALTERNATOR AS

2N-7759 ALTERNATOR AS

#UEG0686S0210

2N-7759: ALTERNATOR AS

ALTERNATOR AS

2N7759 ALTERNATOR ASSEMBLY--12 Volt, 55 Ampere
Part of 3N2708 and 3N2709 Alternator Groups shown on Pages 94 & 95

c134507 UEG0686S

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Parts for your 3306 INDUSTRIAL ENGINE:

CATERPILLAR SIS

Pos.	Qty	Parts name
1.	[2]	BOLT
2.	[7]	NUT
3.	[7]	LOCKWASHER
4.	[3]	INSULATOR
5.	[10]	WASHER
6.	[2]	WASHER
7.	[1]	CABLE ASSEM.
8.	[4]	NUT & LOCK ASSEM.
9.	[4]	INSULATOR
10.	[1]	DIODE ASSEM. (3 Diodes-Negative)
11.	[1]	DIODE ASSEM. (3 Diodes-Positive)
12.	[1]	BOLT
13.	[1]	CABLE ASSEM.
14.	[4]	BOLT
15.	[1]	HOUSING (Rear)
16.	[1]	RETAINER
17.	[1]	INSULATOR
18.	[1]	BRUSH ASSEM.
19.	[1]	GASKET
20.	[2]	SCREW
21.	[2]	SCREW
22.	[1]	COVER
23.	[1]	ROTOR ASSEM.
24.	[1]	BEARING
25.	[1]	SCREW
	[1]	LOCKWASHER
	[1]	WASHER
26.	[1]	RING ASSEM.
27.	[1]	STATOR ASSEM.
28.	[1]	HOUSING (Front)
29.	[1]	RETAINER
30.	[3]	SCREW
	[3]	LOCKWASHER
31.	[1]	SEAL
32.	[1]	SPACER
33.	[1]	NUT
	[1]	LOCKWASHER
34.	[1]	SLEEVE
35.	[1]	KEY
36.	[1]	BEARING
37.	[1]	WASHER
38.	[1]	FAN

#UEG0686S0211

1L-5011: VALVE GP-STARTING AIR

VALVE GP-STARTING AIR

1L5011 REGULATING AND PRESSURE REDUCING VALVE GROUP
AN ATTACHMENT

c79655 UEG0686S

1L5011 VALVE GP-STARTING AIR Parts scheme

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Parts for your 3306 INDUSTRIAL ENGINE:

CATERPILLAR SIS

Part No	Qty	Parts name
1H-9568	[1]	SCREW
1L-9048	[1]	NUT
1L-9059	[1]	HOUSING
1H-9569	[1]	BUTTON
1L-9049	[1]	SPRING
1L-9062	[6]	BOLT
1L-9061	[6]	NUT
1L-9063	[1]	DIAPHRAGM
1H-9572	[1]	PLATE
1L-9060	[1]	BUTTON
1L-9064	[1]	PISTON ASSEM.
1L-9066	[1]	SCREEN
1L-9068	[1]	BODY
7L-8705	[1]	CYLINDER
1H-9580	[1]	GASKET
1L-9067	[1]	SPRING
1L-9069	[1]	PLUG ASSEM.

#UEG0686S0212

6L-6468: CLUTCH GP-FLYWHEEL

CLUTCH GP-FLYWHEEL

6L6468 FLYWHEEL CLUTCH GROUP

c117819 UEG0686S

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Parts for your 3306 INDUSTRIAL ENGINE:

CATERPILLAR SIS

Part No	Qty	Parts name
4F-8965	[12]	BOLT
1L-6716	[1]	BEARING
0S-1585	[8]	BOLT
2N-7078 Y	[1]	CLUTCH ASSEM.
		(SEPARATE ILLUSTRATION)
Y		SEPARATE ILLUSTRATION

#UEG0686S0213

2N-7078: CLUTCH GP

CLUTCH GP

2N7078 CLUTCH ASSEMBLY--Type 1
Specification No. 33590
Part of 6L6468 Flywheel Clutch Group shown on Page 102

c135172 UEG0686S

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Parts for your 3306 INDUSTRIAL ENGINE:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	4B-4810	[1]	LEVER ASSEM.
	0S-1587	[1]	BOLT
2.	6L-3972	[4]	PIN
	6L-3961	[4]	COTTER PIN
	1L-4863	[8]	WASHER
3.	1L-6931	[2]	SCREW ASSEM.
4.	6L-3967	[8]	PIN
	6L-3964	[8]	COTTER PIN
5.	4B-4721	[8]	LINK
6.	3B-8489	[2]	FITTING
	9S-1354	[1]	NUT
	6F-0253	[1]	LOCKWASHER
7.	2F-5375	[1]	GASKET
8.	5B-2410	[1]	HOSE ASSEM.
	5K-9243	[1]	ELBOW
9.	4B-4716	[1]	COLLAR ASSEM.
10.	0L-0639	[2]	BOLT
	2L-6267	[2]	NUT
	4B-4758	[2]	SHIM
11.	2L-6010	[1]	PLUG
12.	4B-4782	[1]	RETAINER
13.	3F-3729	[1]	RING
14.	6B-8575	[1]	KEY
15.	3B-8490	[1]	FITTING
16.	6L-1821	[1]	SHAFT
17.	2B-4602	[1]	PLUG
18.	1B-3922	[2]	CUP
	6B-3183	[2]	CONE
19.	7L-0116	[1]	LOCK
20.	1A-9136	[1]	BOLT
	3F-9556	[1]	LOCKWASHER
21.	4B-4792	[1]	YOKE ASSEM.
22.	0S-1591	[2]	BOLT
	3B-4506	[2]	LOCKWASHER
23.	8B-7121	[2]	FITTING
24.	6L-5151	[2]	KEY
25.	4B-4754	[1]	SHAFT
26.	1L-5517	[1]	SLEEVE
27.	3H-9572	[1]	RING
28.	3H-9575	[1]	PIN
29.	4B-4803	[1]	RING
30.	5F-0229	[1]	SPRING
31.	4B-4752	[1]	NUT
32.	4B-4772	[1]	LOCK
33.	5B-2417	[1]	KEY
34.	1L-5516	[1]	PLATE
35.	6L-4750	[1]	PLATE ASSEM.
36.	4H-0003	[1]	PLATE
37.	4H-0002	[4]	LEVER
38.	5L-9422	[1]	PLATE

#UEG0686S0214

2N-7078: CLUTCH GP

CLUTCH GP

2N7078 CLUTCH ASSEMBLY--Type 2
Specification No. 33590
Part of 6L6468 Flywheel Clutch Group shown on Page 102

c150901 UEG0686S

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Parts for your 3306 INDUSTRIAL ENGINE:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	4B-4810	[1]	LEVER ASSEM.
	0S-1587	[1]	BOLT
2.	6L-3972	[4]	PIN
	6L-3961	[4]	COTTER PIN
	1L-4863	[8]	WASHER
3.	1L-6931	[2]	SCREW ASSEM.
4.	6L-3967	[8]	PIN
	6L-3964	[8]	COTTER PIN
5.	4B-4721	[8]	LINK
6.	3B-8489	[2]	FITTING
	9S-1354	[1]	NUT
	6F-0253	[1]	LOCKWASHER
7.	3H-9572	[1]	RING
8.	5B-2410	[1]	HOSE ASSEM.
	5K-9243	[1]	ELBOW
9.	4B-4716	[1]	COLLAR ASSEM.
10.	0L-0639	[2]	BOLT
	2L-6267	[2]	NUT
	4B-4758	[2]	SHIM
11.	2L-6010	[1]	PLUG
12.	4B-4782	[1]	RETAINER
13.	3F-3729	[1]	RING
14.	6B-8575	[1]	KEY
15.	3B-8490	[1]	FITTING
16.	6L-1821	[1]	SHAFT
17.	2B-4602	[1]	PLUG
18.	1B-3922	[2]	CUP
	6B-3183	[2]	CONE
19.	7L-0116	[1]	LOCK
20.	1A-9136	[1]	BOLT
	3F-9556	[1]	LOCKWASHER
21.	4B-4792	[1]	YOKE ASSEM.
22.	0S-1591	[2]	BOLT
	3B-4506	[2]	LOCKWASHER
23.	8B-7121	[2]	FITTING
24.	6L-5151	[2]	KEY
25.	4B-4754	[1]	SHAFT
26.	1L-5517	[1]	SLEEVE
27.	3N-8125 C	[1]	PLATE ASSEM.
			(Includes)
28.	3N-8123	[1]	PIN
29.	3N-8124	[1]	SPRING
30.	4B-4803	[1]	RING
31.	4B-4752	[1]	NUT
32.	4B-4772	[1]	LOCK
33.	5B-2417	[1]	KEY
34.	1L-5516	[1]	PLATE
35.	6L-4750	[1]	PLATE ASSEM.
36.	4H-0002	[4]	LEVER
37.	5L-9422	[1]	PLATE
	C		INDICATES CHANGE

#UEG0686S0215

3N-2081: DRIVE GP-AUXILIARY

DRIVE GP-AUXILIARY

3N2081 AUXILIARY DRIVE GROUP--Lower
FOR USE WITH ATTACHMENTS NOT EXCEEDING 10 H.P.

c117838 UEG0686S

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Parts for your 3306 INDUSTRIAL ENGINE:

CATERPILLAR SIS

Pos.	Qty	Parts name
1.	[1]	NUT
	[1]	LOCK
2.	[1]	SHAFT
3.	[1]	GEAR (40 teeth)
4.	[1]	SEAL
5.	[1]	ADAPTER
6.	[1]	SEAL
7.	[2]	BEARING
8.	[2]	RING
9.	[6]	BOLT
10.	[1]	PULLEY
11.	[1]	SPACER

#UEG0686S0216

9L-5762: AIR COMPRESSOR GROUP

AIR COMPRESSOR GROUP

9L5762 AIR COMPRESSOR GROUP
FOR USE WITH ATTACHMENT WATER PUMP AND AIR LINES
CANNOT BE USED WITH SEA WATER PUMP

c117911 UEG0686S

9L5762 AIR COMPRESSOR GROUP Parts scheme

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Parts for your 3306 INDUSTRIAL ENGINE:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	2P-1830 Y	[1]	COMPRESSOR GROUP
			(Separate Illustration)
2.	2P-4262	[1]	BLOCK
	9M-0385	[1]	STRAINER
	6L-1884	[2]	GASKET
3.	2B-2694	[2]	BOLT
	9M-1974	[2]	WASHER
4.	1A-1135	[2]	BOLT
	4D-3704	[2]	WASHER
5.	0S-1591	[3]	BOLT
	5M-2894	[3]	WASHER
6.	2P-0220	[1]	GASKET
	Y		SEPARATE ILLUSTRATION

#UEG0686S0217

2P-1830: AIR COMPRESSOR GROUP

AIR COMPRESSOR GROUP

2P1830 AIR COMPRESSOR GROUP
Part of 9L5762 Air Compressor Group

c117229 UEG0686S

2P1830 AIR COMPRESSOR GROUP Parts scheme

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Parts for your 3306 INDUSTRIAL ENGINE:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	9L-5426	[1]	HEAD ASSEM.
2.	9M-0387	[2]	SEAT
3.	9M-0388	[2]	INSERT
4.	9M-0386	[2]	CAP
5.	3F-4987	[2]	SPRING
6.	3H-5181	[2]	VALVE
7.	9M-0394	[2]	SEAT
8.	3J-5389	[3]	PLUG
9.	3L-1850	[1]	PLUG
10.	9M-0379	[10]	BOLT
11.	2S-1218	[1]	GASKET
12.	9M-0410	[1]	BLOCK ASSEM.
13.	9M-0382	[2]	BUSHING
14.	9M-0381	[2]	SEAT
15.	5M-6213	[2]	PLUG
16.	0S-1594	[6]	BOLT
	3B-4506	[6]	LOCKWASHER
17.	3H-7311	[1]	GASKET
18.	4M-0061	[4]	BOLT
	4L-7318	[4]	LOCKWASHER
19.	9L-1517	[1]	WASHER
20.	5M-6214	[2]	PLUG
21.	9L-3520	[1]	COVER ASSEM.
22.	2S-4245	[1]	BEARING
23.	2H-3931	[1]	SEAL
24.	2S-3079	[1]	COVER
25.	4M-5281	[6]	BOLT
	3B-4504	[6]	LOCKWASHER
26.	3H-5175	[1]	GASKET
27.	2P-7863	[1]	CRANKCASE
28.	9L-1518	[1]	WASHER
29.	9F-2247	[1]	PLUG
30.	2P-7862	[1]	CRANKSHAFT
31.	8S-4646	[2]	ROD ASSEM.
32.	4N-3994	[1]	BEARING
33.	9M-5181	[2]	BOLT
	8S-4645	[2]	LOCK
34.	9M-0380	[2]	LOCK
35.	3S-0915	[2]	PISTON ASSEM.
36.	9L-2271	[2]	GUIDE
37.	9L-2270	[2]	PLUNGER
38.	9L-2276	[2]	GUIDE
	9L-2277	[2]	VALVE
39.	9L-2278	[2]	SPRING
40.	9L-2273	[1]	SPRING
	4M-6410	[1]	SEAT
41.	3J-5390	[4]	PLUG
42.	7M-7410	[1]	PLUG
43.	9L-2272	[1]	SADDLE
44.	9L-2269	[2]	PISTON ASSEM.
	4M-6412	[1]	RING
	3L-6768	[1]	SEAL
			THE FOLLOWING REPAIR KIT ARE AVAILABLE:
	9L-0947	[1]	KIT (Gasket)
	3S-0916	[1]	KIT (Piston Ring)
			(Rings for Two Cast Iron Pistons)

#UEG0686S0218

2P-7799: AIR COMPRESSOR LINES GROUP

AIR COMPRESSOR LINES GROUP

2P7799 AIR COMPRESSOR LINES GROUP
Only separate parts serviced

c117230 UEG0686S

2P7799 AIR COMPRESSOR LINES GROUP Parts scheme

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Parts for your 3306 INDUSTRIAL ENGINE:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	8B-2664	[1]	CONNECTOR
2.	7K-1517	[2]	ELBOW
3.	2P-4201	[1]	TUBE ASSEM.
4.	2P-2248	[1]	TUBE ASSEM.
5.	5K-9240	[2]	ELBOW
6.	2P-4243	[1]	TUBE ASSEM.
7.	5K-9244	[2]	ELBOW
8.	2P-4245	[1]	TUBE ASSEM.
9.	5K-9239	[1]	CONNECTOR
10.	5K-9243	[1]	ELBOW

#UEG0686S0219

3N-4891: HOOD & DASH GP

HOOD & DASH GP

3N4891 HOOD AND DASH GROUP
CANNOT BE USED WITH AIR STARTING MOTOR

c117649 UEG0686S

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Parts for your 3306 INDUSTRIAL ENGINE:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	4L-6390	[1]	HOOD ASSEM.
2.	4L-9348	[2]	STOP
3.	2P-1287	[6]	BOLT
4.	2N-3385	[37]	NUT
5.	2P-3200	[41]	BOLT
6.	4L-4214	[2]	COVER
7.	1P-1135	[12]	SCREW
8.	3N-4895	[12]	NUT ASSEM.
9.	3N-4887	[1]	SHELL
10.	1N-5317	[1]	PLATE
11.	0T-0318	[4]	BOLT
	1D-4718	[4]	NUT
	2S-0932	[4]	WASHER
12.	3N-4888	[1]	PLATE
13.	0S-1566	[4]	BOLT
	2S-0736	[4]	WASHER
	4D-5668	[4]	SPACER
14.	0S-1594	[4]	BOLT
15.	1D-4717	[6]	NUT
	5M-2894	[10]	WASHER
16.	6L-6155	[1]	ADAPTER
17.	3F-8431	[1]	PIPE
18.	9M-8729	[1]	"U" BOLT
19.	5L-3845	[1]	PLATE
20.	2N-1841	[2]	SUPPORT
21.	1N-5315	[1]	BRACKET
22.	2B-7410	[1]	PLUG
	3B-6489	[1]	COUPLING
23.	4L-9434	[1]	PLATE
24.	3N-4889	[1]	PLATE