8K1916 ETHER STARTING AID GROUP--Type 3 NOTE: 7N296 Ether Cylinder Assembly is used and must be purchased separately from your Caterpillar Dealer AN ATTACHMENT 225

ELECTRICAL AND STARTING SYSTEM

STARTING AID GP

0. 8K-1916 ETHER STAR

ALTERNATOR GP-CHARGING

1. 3P-0079 CHARGING A
2. 5S-9088 ALTERNATOR
3. 5S-9088 ALTERNATOR
4. 2P-1204 ALTERNATOR

BATTERY GP

5. 8K-0152 BATTERY AN

WIRING GP

6. WIRING DIA

HARNESS GP

7. 8K-1407 WIRING HAR

SWITCH GP

8. 3K-1650 SWITCH AS-
9. 7H-7290 SWITCH AS-
0. INFORMATION

EXCAVATOR 225 EXCAVATOR 51U
225 EXCAVATOR 51U00001-00589 (MACHINE) UEG0663S 225 51U (1972)

ELECTRICAL AND STARTING SYSTEM

STARTING AID GP

8K-1916 ETHER STARTING AID GROUP

#UEG0663S0080

8K-1916: ETHER STARTING AID GROUP

ETHER STARTING AID GROUP

8K1916 ETHER STARTING AID GROUP--Type 3
NOTE: 7N296 Ether Cylinder Assembly is used and must be purchased separately from your Caterpillar Dealer
AN ATTACHMENT

c169942 UEG0663S

8K1916 ETHER STARTING AID GROUP Parts scheme

For full view, you need register

Parts for your 225 EXCAVATOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	0S-1615	[2]	BOLT
	1B-4330	[2]	NUT
	3B-4504	[2]	LOCKWASHER
2.	7J-6596	[1]	FITTING ASSEM.
3.	7J-5609	[1]	VALVE AND BRACKET ASSEM.
4.	8K-2524	[1]	PLATE
5.	0S-1587	[2]	BOLT
	3B-4508	[2]	LOCKWASHER
	8F-0492	[2]	SPACER
6.	7N-2059 C	[1]	CLAMP ASSEM.
7.	6N-6365	[1]	STOP
8.	9B-9172	[1]	SCREW
9.	8K-2525	[1]	CABLE ASSEM.
10.	5P-5630 H		TUBE 4.60 m(181.10 in.)
11.	3S-2093	[8]	STRAP
12.	7J-5606	[1]	FITTING
13.	2H-3755 C	[2]	BOLT
	1D-4716 C	[2]	NUT
	C		INDICATES CHANGE
	H		ORDER BY THE METER

#UEG0663S0081

3P-0079: CHARGING ALTERNATOR GROUP

CHARGING ALTERNATOR GROUP

3P79 CHARGING ALTERNATOR GROUP--24 Volt, 50 Ampere
Also part of 3P159 Refrigerant Compressor Arrangement listed on Page 170B
5S9088 Alternator parts are shown on Pages 54B and 54C. AN ATTACHMENT

c143452 UEG0663S

3P0079 CHARGING ALTERNATOR GROUP Parts scheme

For full view, you need register

Parts for your 225 EXCAVATOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	5S-9088 RY	[1]	ALTERNATOR ASSEM.
			(Separate Illustration)
2.	3B-1163	[1]	WASHER
3.	2P-7832	[1]	STRAP
4.	9S-6759	[1]	PULLEY
5.	4N-5352	[1]	VEE BELT SET
6.	9S-0173	[1]	CIRCUIT BREAKER
7.	8M-7892	[1]	AMMETER
8.	5H-4822	[1]	WIRE ASSEM.
	4S-8773 H		WIRE 15.25 in.
	9F-9353	[1]	TERMINAL
	9F-5320	[1]	TERMINAL
	R		REMFG PART MAY BE AVAILABLE
	Y		SEPARATE ILLUSTRATION
	H		INDICATES CHANGE

#UEG0663S0082

5S-9088: ALTERNATOR GP-CHARGING

ALTERNATOR GP-CHARGING

5S9088 ALTERNATOR ASSEMBLY--Part 1 of 2
Part of 3P79 Charging Alternator Group shown on Page 54A
AN ATTACHMENT

c202886 UEG0663S

5S9088 ALTERNATOR GP-CHARGING Parts scheme

For full view, you need register

Parts for your 225 EXCAVATOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	9S-2260	[1]	PLATE
2.	9S-2544	[4]	SCREW
3.	8H-0878	[6]	LOCKWASHER
4.	9S-2438	[2]	SCREW
5.	7H-2079	[7]	LOCKWASHER
6.	9S-2255	[1]	COVER
7.	9S-2262	[1]	GASKET
8.	9S-2246	[1]	LEAD ASSEM.
9.	9S-9830	[1]	SCREW
10.	8F-1326	[3]	WASHER
11.	9B-7233	[3]	LOCKWASHER (Shake Proof)
12.	9S-9829	[1]	SCREW ASSEM.
13.	4B-2043	[4]	NUT
14.	9S-2259	[1]	REGULATOR
15.	9S-2250	[1]	GROMMET
16.	9S-2011	[1]	SCREW
17.	1L-4789	[1]	LOCKWASHER
18.	9S-2389	[1]	STUD ASSEM.
19.	9S-2398	[1]	HOUSING ASSEM.
20.	9S-2393	[3]	DIODE
21.	9S-2397	[1]	COVER
22.	9F-2247	[1]	PLUG
23.	9S-2395	[1]	BEARING
24.	9S-2394	[1]	SEAL
25.	9S-2396	[1]	BUSHING
26.	9S-2007	[3]	SCREW
27.	9S-2301	[1]	INSULATION
28.	9S-2292	[1]	HEAT SINK ASSEM.
29.	9S-2300	[4]	INSULATOR
30.	9S-9830 C	[4]	SCREW
	9S-2247	[4]	WASHER (Spring)
	4B-4863	[4]	WASHER (Plain)
31.	9S-2542	[1]	SCREW
32.	9S-2437	[5]	SCREW
	9S-2013 H	[1]	KIT (Terminal Relay)
			(Consists of Bushing, "O" Ring & Hardware)
	9S-2012 H	[1]	KIT (Terminal Output)
			(Consists of Gaskets, Terminal & Hardware)
	9S-2290 H	[1]	KIT (Heat Sink)
			(Diode Junction Hardware)
	9S-2291 H	[1]	KIT (Heat Sink)
			(Positive Diode Hardware)
	C		INDICATES CHANGE
	H		NOT PART OF 5S9088 ALTERNATOR

#UEG0663S0083

5S-9088: ALTERNATOR GP-CHARGING

ALTERNATOR GP-CHARGING

5S9088 ALTERNATOR ASSEMBLY--Part 2 of 2
Part of 3P79 Charging Alternator Group shown on Page 54A
AN ATTACHMENT

c113560 UEG0663S

For full view, you need register

Parts for your 225 EXCAVATOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	9S-2242	[1]	RACE
2.	9S-2248	[1]	FIELD COIL AND SUPPORT ASSEM.
3.	9S-2004	[1]	STATOR ASSEM.
4.	9S-2006	[1]	INSULATOR
5.	9S-2005	[1]	GROMMET
6.	9S-2014	[3]	CLIP
7.	9S-2302	[1]	ROTOR ASSEM.
8.	9S-2390	[1]	RETAINER ASSEM.
9.	9S-2391	[1]	SEAL
10.	9S-2256	[1]	GASKET
11.	9S-2261	[1]	COLLAR
12.	2F-5721	[1]	BEARING
13.	2P-5616	[1]	FRAME
14.	3B-4502	[4]	LOCKWASHER
15.	9S-2009	[4]	BOLT
16.	9S-2391	[1]	SEAL
17.	9S-2254	[1]	COLLAR
18.	9S-2252	[1]	SLINGER
19.	9S-2008	[4]	SCREW
20.	9S-2258	[1]	FAN AND BAFFLE ASSEM.
21.	7F-7621	[1]	WASHER
22.	2K-4821	[1]	LOCKNUT

#UEG0663S0084

2P-1204: ALTERNATOR GP

ALTERNATOR GP

2P1204 ALTERNATOR ASSEMBLY--24 Volt, 19 Ampere
Part of 1P2669 Alternator Group shown on Page 54

c207038 UEG0663S

For full view, you need register

Parts for your 225 EXCAVATOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	031-0243	[3]	SCREW
2.	6N-3821 CS	[1]	REGULATOR ASSEM.
	3K-6234	[1]	SCREW
	4B-4863	[1]	WASHER
3.	009-8708	[2]	BOOT
4.	2L-8076	[1]	TERMINAL
5.	2L-8077	[1]	TERMINAL
6.	1P-1091 T		KIT-(Reg. Mounting Plate and Gasket)
7.	1P-1145	[1]	HOLDER ASSEM.
	1P-1137	[2]	HOLDER
8.	4B-2049	[4]	NUT
	3B-4502	[4]	LOCKWASHER
9.	1P-1138	[1]	FIELD TERMINAL AND PLATE ASSEM.
10.	5S-4245	[2]	SCREW
	6B-4542	[2]	LOCKWASHER
11.	4B-4274	[1]	WASHER
12.	1P-1130 T	[1]	KIT (2 Brushes)
13.	032-4000	[4]	SCREW
14.	2P-1714 T	[1]	KIT (4 Gaskets)
15.	1P-1080 T	[1]	KIT (Retainer and Seals)
16.	6N-6717 CT	[1]	KIT (insulator)
			(Terminal Stud)
17.	2P-1709	[1]	RECTIFIER AND STATOR ASSEM.
18.	2P-1719	[1]	PLATE AND RECTIFIER ASSEM.
			(Positive)
	2P-1720	[1]	PLATE AND RECTIFIER ASSEM.
			(Negative)
19.	6N-1226 C	[1]	ROTOR ASSEM.
20.	1B-8705	[1]	KEY
21.	3B-4502	[10]	LOCKWASHER
22.	6N-5255 C	[1]	HEAD ASSEM.
23.	6D-9953	[2]	PIN
24.	1B-5387 C	[1]	BEARING
25.	2P-1713 T	[1]	KIT (Retainer and Seal)
			(Retainer, Seal, Spacer, Washer)
26.	017-2311	[3]	SCREW
27.	9M-5520	[1]	SCREW
28.	3B-4511	[1]	LOCKWASHER
29.	1P-1131 T	[1]	KIT (Shaft Parts-Nut and Lockwasher)
30.	2L-0611	[1]	BEARING
31.	1P-1134	[1]	RACE
32.	6N-5257 CT	[1]	KIT (frame screw-12 bolts)
33.	6N-5254 C	[1]	HEAD ASSEM.
34.	3B-4507	[2]	LOCKWASHER 11mm(.437 in.)I.D.
	3B-4504	[2]	LOCKWASHER 6.35mm(.25in.)I.D.
35.	1D-4718	[2]	NUT 11mm(.437 in.) I.D.
	9M-1311	[2]	NUT 6.35mm(.25 in.)I.D.
36.	2H-6139	[4]	LOCKWASHER
37.	1P-1088 T	[1]	KIT (2 Brush Springs)
38.	2P-6261 C	[2]	INSULATOR
	C		INDICATES CHANGE
	S		2P1698 ALTERNATOR ASSEM. CONSI
	T		REPAIR KITS ARE AVAILABLE MARK

#UEG0663S0085

8K-0152: BATTERY AND WIRING GROUP

BATTERY AND WIRING GROUP

8K152 BATTERY AND WIRING GROUP--24 Volt
8K1407 Harness, 3K1650 and 7H7290 Switches and 1M3385 Lamp parts are shown on Pages 58, 59 and 60

c166285 UEG0663S

8K0152 BATTERY AND WIRING GROUP Parts scheme

For full view, you need register

Parts for your 225 EXCAVATOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	3K-1717	[1]	CABLE ASSEM.
2.	5M-9206	[1]	TERMINAL ASSEM. (Pos)
3.	5M-9205	[1]	TERMINAL ASSEM. (Neg)
4.	2D-8788	[6]	BOLT
	2D-8787	[6]	NUT
			(1 in each Terminal Assem.)
5.	7K-1859	[1]	MAT
6.	4H-3283	[4]	BOLT
	3B-4506	[4]	LOCKWASHER
	4B-4278	[4]	WASHER
7.	3R-2204	[2]	CABLE ASSEM.
8.	5M-9204	[1]	TERMINAL ASSEM. (Pos)
9.	5M-9205	[1]	TERMINAL ASSEM. (Neg)
10.	5S-7219	[4]	BATTERY
	5S-8405	[3]	PLUG
11.	6K-8515	[1]	FRAME ASSEM.
12.	4K-9409	[1]	CABLE ASSEM.
13.	3D-2098 C	[1]	TERMINAL ASSEM.
14.	2M-0913	[1]	TERMINAL (Switch)
15.	7D-8176	[1]	CABLE ASSEM.
16.	3D-2098	[1]	TERMINAL ASSEM.
17.	1S-7251	[1]	TERMINAL
18.	7K-1181	[2]	STRAP
19.	3S-2093	[11]	STRAP
20.	7H-7290 Y	[1]	SWITCH ASSEM.
			(Separate Illustration)
21.	3K-1650 Y	[1]	SWITCH ASSEM.
			(Separate Illustration)
22.	4K-5122	[6]	HOLDER
	8M-8948	[1]	FUSE (15 Amp)
23.	1F-7307	[1]	AMMETER
24.	2P-4749	[1]	SWITCH ASSEM.
	8F-3437	[1]	LEVER
	5L-7200	[1]	SCREW
	3B-4501	[1]	LOCKWASHER
25.	8K-1407 Y	[1]	HARNESS ASSEM.
			(Separate Illustration)
26.	1M-3385 Y	[1]	LAMP ASSEM.
			(Separate Illustration)
27.	5M-2555	[1]	CIRCUIT BREAKER
28.	5M-6668	[2]	SCREW
	3B-4501	[2]	LOCKWASHER
29.	4M-3136	[1]	CABLE ASSEM.
	1S-7252	[2]	TERMINAL
30.	8K-1412	[1]	HARNESS ASSEM.
31.	6D-7912	[1]	CABLE ASSEM.
32.	1S-7251	[1]	TERMINAL (Stg Motor)
33.	2M-0913	[1]	TERMINAL (Switch)
34.	8K-2537	[1]	HARNESS ASSEM.
	C		INDICATES CHANGE
	Y		SEPARATE ILLUSTRATION

#UEG0663S0086

WIRING DIAGRAM

WIRING DIAGRAM--24 Volt System

UEG0663S0086 UEG0663S

For full view, you need register

Parts for your 225 EXCAVATOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name	Comments

#UEG0663S0087

8K-1407: WIRING HARNESS ASSEMBLY

WIRING HARNESS ASSEMBLY

8K1407 WIRING HARNESS ASSEMBLY--24 Volt
Part of Battery and Wiring shown on Page 56

c116791 UEG0663S

8K1407 WIRING HARNESS ASSEMBLY Parts scheme

For full view, you need register

Parts for your 225 EXCAVATOR:

CATERPILLAR SIS

Pos.	Qty	Parts name
1.	[4]	TERMINAL
2.	[2]	TERMINAL
3.	[2]	INSULATOR
4.	[2]	TERMINAL
5.	[2]	INSULATOR
6.	[6]	TERMINAL
7.	[2]	TERMINAL
	[2]	INSULATOR
8.	[5]	TERMINAL
9.	[4]	TERMINAL
10.	[1]	TERMINAL
11.	[3]	TERMINAL
12.	[1]	TERMINAL

#UEG0663S0088

3K-1650: SWITCH AS-LIGHT

SWITCH AS-LIGHT

3K1650 SWITCH ASSEMBLY--24 Volt
Part of Battery and Wiring shown on Page 56

c224356 UEG0663S

For full view, you need register

Parts for your 225 EXCAVATOR:

CATERPILLAR SIS

Pos.	Part No	Qty	Parts name
1.	7S-5432	[1]	KNOB-SWITCH
	5L-7200	[1]	SCREW
	3B-4501	[1]	LOCKWASHER
2.	8F-3436	[1]	NUT-HEX
	9B-0453	[1]	LOCKWASHER
	8F-3434	[1]	WASHER
3.	2F-2860 C	[4]	SCREW-MACHINE
	3B-4501	[4]	LOCKWASHER
	C		CHANGE FROM PREVIOUS TYPE