Alternators

Alternators
11AC Type (External Regulator) Up To 1969
Reconditioning AC type alternators is becoming more difficult, due to the limited stocks of spare parts available. If you require a reconditioned unit, please contact us first to ensure we can help you. Replacing an external regulator AC alternator with a more serviceable and more powerful internal regulator ACR type is an option, but you should be confident of your electrical abilities if you intend to make the conversion. AC alternator fitted Minis are positive earth, and you will need to convert the system to negative earth to fit an ACR alternator. There is also a quantity of terminal conversion and rewiring to be carried out to connect an ACR alternator into the system.

Ill. No.	Part No.	Description	Qty. Rqd.	Remarks
1	GEU2201	ALTERNATOR, reconditioned, exchange	1	Not supplied with pulley and fan.
2	GGB501	BRUSH SET	1
3	27H8146	HEATSINK, with anode base diodes	1
4	17H8689	BEARING, rear	1
5	97H626	BEARING, front	1
6	37H6834	KIT, bearing retaining	1
7	27H3832	'O' RING	1
8	37H2884	ROTOR	1
9	37H3096	STATOR	1
10	17H8695	SUNDRY PARTS KIT	1
11	13H2177	FAN	1
12	12G1054	PULLEY	1
13	FNZ207	NUT, pulley and fan securing	1	Included in sundry parts kit.
14	LWZ207	WASHER, locking	1	Included in sundry parts kit.
15	GEU250	PLUG KIT	1	Use when modifying AC type system to accept ACR unit.
16	13H8783	CONNECTOR, plug, small	1	Included in GEU250 plug kit.
17	ALU1003	CONNECTOR, plug, large	2	Included in GEU250 plug kit.
18	ADU4669	HOUSING, plug	1	Included in GEU250 plug kit.
19	ADU4670	COVER, plug	1	Included in GEU250 plug kit.
20	GCB10838	DRIVE BELT, alternator, water pump and fan	1	Use with original 4 1/2" dia. water pump pulley.

11AC Alternator Circuit Components
Ill. No.	Part No.	Description	Qty. Rqd.	Remarks
21	GEU6609	REGULATOR BOX, Lucas 4TR	1
22	GHF425	SCREW, self tapping, regulator attaching	2
23	BMK1092	CONTROL UNIT, warning light	1
24	PMZ408	SCREW, control unit attaching	1
25	LWZ204	WASHER, locking	1
26	FNZ104	NUT	1
27	BMK685	FIELD RELAY, alternator	1
28	PTZ1003	SCREW, self tapping, field relay attaching	2

16ACR and 17ACR Types (Internal Regulator) 1969-80
Several different alternators were fitted in this period, of varying power rating (16 or 17ACR) and using two methods of sensing. Initially battery-sensed alternators were fitted; at unspecified times the designs changed to machine-sensed. The situation today as regards replacement alternators is that all ACR types (as far as Mini is concerned) supersede to a single, 17ACR, machine-sensed unit.

If you have an early 1970s Mini and you suspect the alternator hasn't been changed in the last 15 years or so, then you may well still have a battery-sensed alternator fitted. There should be no problem in exchanging it for a GXE2211 machine-sensed item.
Ill. No.	Part No.	Description	Qty. Rqd.	Remarks
29	GXE2211	ALTERNATOR, reconditioned, outright	1	17ACR, machine-sensed; now 65 amp.

The following are parts specific to original Mini equipment ACR alternators. The Lucas identifying number should still be visible on the casing, and will usually be required when ordering parts. Battery-sensed alternators were numbered 23748, 23750 or 23804; machine-sensed units were numbered 23640, 23725, 23774 or 23802.

Ill. No.	Part No.	Description	Qty. Rqd.	Remarks
30	NKC484A	COVER, rear	1
31	GGB504	BRUSH SET	1
32	607693A	BRUSH BOX	1
33	AAU8600	SURGE PROTECTOR	1	Not for 23640 alternator.
34	608074	CAPACITOR, suppression	1	For 23748, 23802 and 23804 alternators.
35	18G8620	BEARING KIT, rear	1
36	18G8619	BEARING KIT, front	1	For 23748, 23750, 23802 and 23804 alternators.
	518848	BEARING KIT, front	1	For 23640, 23725 and 23774 alternators.
37	AAU2053	ROTOR	1	For 23640, 23750 and 23804 alternators.
	607691	ROTOR	1	For 23725, 23748, 23774 and 23802 alternators.
38	37H2250	SLIP RING	1	For 23640, 23750 and 23804 alternators.
	608423	SLIP RING	1	For 23725, 23748, 23774 and 23802 alternators.
39	606828	STATOR	1	For 23640, 23750 and 23804 alternators.
	37H6023	STATOR	1	For 23725, 23748, 23774 and 23802 alternators.
40	37H6924	RECTIFIER	1	For 23640 alternator.
	90607688	RECTIFIER	1	For 23725, 23774 and 23802 alternators.
	RTC1004	RECTIFIER	1	For 23748, 23750 and 23804 alternators.
41	607687	REGULATOR, internal	1	For 23640, 23725, 23774 and 23802 alternators.
	RTC1003	REGULATOR, internal	1	For 23748, 23750 and 23804 alternators.
42	37H2258	SUNDRY PARTS KIT	1
43	C37222A	FAN	1	Use with 12G1054 pulley.
	AAU3956A	FAN	1	Use with BAU1461 pulley.
44	12G1054	PULLEY, 2 3/4" wide	1	Use with C37222A fan.
	BAU1461	PULLEY, 2 1/2" wide	1	Use with AAU3956A fan.
45	FNZ207	NUT, pulley and fan securing	1	Included in sundry parts kit.
46	LWZ207	WASHER, locking	1	Included in sundry parts kit.
47	GEU250	PLUG KIT	1
48	13H8783	CONNECTOR, plug, small	1	Included in GEU250 plug kit.
49	ALU1003	CONNECTOR, plug, large	2	Included in GEU250 plug kit.
50	ADU4669	HOUSING, plug	1	Included in GEU250 plug kit.
51	ADU4670	COVER, plug	1	Included in GEU250 plug kit.
52	GCB10813	DRIVE BELT, alternator, water pump and fan	1	Use when 3 7/8" dia. water pump pulley is fitted.
	GCB10838	DRIVE BELT, alternator, water pump and fan	1	Use when 4 1/2" dia. water pump pulley is fitted.

A115/45 Type 1980-85
Ill. No.	Part No.	Description	Qty. Rqd.	Remarks
53	GXE2257	ALTERNATOR, reconditioned, outright	1	Not supplied with pulley, fan or capacitor.
54	AEU1671	COVER, rear	1
55	GGB512	BRUSH SET	1
56	BAU2195A	BRUSH BOX	1
57	AEU1528A	SURGE PROTECTOR	1
58	AEU1616	CAPACITOR, suppression	1
59	AEU1532A	BEARING KIT, rear	1
60	18G8619	BEARING KIT, front	1
61	BAU2193A	SLIP RING	1
62	BAU1825A	RECTIFIER	1
63	AEU1526A	REGULATOR	1
64	AEU1710A	SUNDRY PARTS KIT	1
65	ADU4354	FAN	1
66	AAU5455A	PULLEY	1
67	FNZ207	NUT, pulley and fan securing	1	Included in sundry parts kit.
68	LWZ207	WASHER, locking	1	Included in sundry parts kit.
69	GCB10813	DRIVE BELT, alternator, water pump and fan	1	Use when 3 7/8" dia. water pump pulley is fitted.
	GCB10838	DRIVE BELT, alternator, water pump and fan	1	Use when 4 1/2" dia. water pump pulley is fitted.

A127/45 and A127/55 Types 1985-96
Whether your Mini is currently fitted with an A127/45 or A127/55 (45 or 55 amp) alternator, when you ask for a reconditioned unit you will receive a 55 amp rated alternator.
Ill. No.	Part No.	Description	Qty. Rqd.	Remarks
70	GXE2297	ALTERNATOR, reconditioned, outright	1	With pulley, fan and capacitor; not air conditioned models.
	GNU2518	ALTERNATOR, new	1	Not supplied with pulley, fan or capacitor; air conditioned models.
71	BAU5265	REGULATOR AND BRUSH BOX ASSY.	1	Includes brushes.
72	BAU5813	RECTIFIER	1
73	BAU4923	BEARING, rear	1
74	BAU4921	END COVER, front, with bearing	1
75	BAU4927	SUNDRY PARTS KIT	1	Includes nut and washer for pulley and fan.
76	BAU4926	THROUGH BOLT KIT	1
77	BAU4928	TERMINAL NUT AND WASHER KIT	1
78	BAU4924	CAPACITOR, suppression	1
79	AUU1097	FAN	1
	ADU7781	FAN	1	Alternative.
80	ADU7778	PULLEY	1
81	JZV1143	WASHER, fan support	1
82	ADU9192	SPACER, pulley	1
83	GCB10825	DRIVE BELT, alternator and water pump	1	Use when 4 3/4" dia. water pump pulley is fitted.
	GCB10813	DRIVE BELT, alternator and water pump	1	Use when 3 7/8" dia. water pump pulley is fitted.
	PQS100920	DRIVE BELT, alternator	1	For air conditioned models.
	PQS100990	DRIVE BELT, compressor and water pump	1	For air conditioned models.

A127/65 Type 1997 On
Ill. No.	Part No.	Description	Qty. Rqd.	Remarks
84	GNU2521	ALTERNATOR, new	1	Supplied complete with pulley.
85	GMB50920	DRIVE BELT, alternator and water pump	1	Not air conditioned models.
	GMB51005	DRIVE BELT, compressor, alternator and water pump	1	Air conditioned models.

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