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RHD Datsun 1200 was fitted with Mitsubishi or Hitachi alternator. North American models were equipped with a lightweight (8.4 pound) 35 AMP Hitachi alternator. These alternators will usually last 10-15 years or more than 100,000 miles before maintenance is required. The only normal maintenance is to replace the brushes when the dashboard alternator light starts flickering. The alternator uses an external Voltage regulator.

1 Interchange
2 Internally Regulated
3 Mounting
- 3.1 Details
- 3.2 Details, Late
4 Wiring
5 Testing
6 Disassembly & Maintenance
7 Part Numbers
8 Regulator
9 Upgrades

Interchange

Strict interchange:

Alternator (35 AMP model)
- 510 1968-early 1971 USA
- 521 1969-early 1971 USA
- 620 1973-1979 USA

Loose interchange: Many kinds of alternators. See Upgrade section below.

45A - looks very similar to B110 unit
240Z

Internally Regulated

Datsun 1200s from October 1981 came with a 35A alternator with integral regulator. It is a DIRECT BOLT-ON for the stock 1200 35A alternator, and requires a one-wire connection. You can unplug or discard any external voltage regulator.

See main article: LR135

Late 120Y Australian assembled have a Lucas single wire internally regulated alternator. Earlier 120Y have had an externally regulated alternator.

Lucas have one IND Plug and two + terminals.

Lucas 15AC

Mounting

Early A-series engines (1966-1973) mount the alternator down low on the left side of the engine, under the intake manifold as shown in this photo:

1974-up engines mount it high on the right side of the engine. For the A Engine Redesign, the alternator was moved to this position to make room for an Air conditioning pump or Smog pump.

Details

Early A-series mount details

Adjusting Bar
B10, E10, B110, B120 early (A10 & A12)
* 11715-18001 BAR-adjusting, alternator B10
* 11715-H2300 BAR-adjusting, alternator B110 (to '70-Aug.) [thin]
* 11715-M0100 BAR-adjusting, alternator (from '70-Sept.) [thick]
* 11715-M0110 BAR-adjusting, alternator (op.) E10 1974

Fixing Adjusting Bar
** 81-10816-1/08110-81610 BOLT, fixing adjusting bar
** 89-15138-1/08915-13810 WASHER-lock, fixing adjusting bar

V-Belt
* 11720-18002 BELT-fan (L=838) B10
* 11720-27720 BELT-fan B10 (op.) Rally
* 11720-18002 BELT-fan (L=838) B110
* 11720-25604 BELT-fan (L=856) E10
* 11720-18002 BELT-fan (L=838) E10 (from '72)

 B10, B110, B120, E10
* 11710-H0100 BRACKET-alternator

B110/B120 - using studs in engine block
** 89-11208-1/08911-20810 NUT (2)
** 89-15438-1/08915-43810 WASHER-plain (2)

E10 - using bolts into engine block
** 81-31022-1/08313-02210 BOLT, fixing bracket (2)
** 89-15140-1/08915-14010 WASHER-lock, fixing bracket (2)

B10 EARLY & OPTION
* 11710-18000 BRACKET-alternator B10 (replaced by 11710-H0100)
* 11710-27720 BRACKET-alternator (506W alternator) (op.) B10 Rally
B10 used these to fix bracket to engine block:
** 89-11210-1 NUT, fixing alternator bracket (2)
** 89-15140-1 WASHER-lock, fixing alternator bracket (2)
or
** 81-31022-1 NUT (2)
** 89-14140-1 WASHER-lock (2)

Fixing alternator to bracket
B10 early
** 11711-18000 BOLT, fixing alternator to bracket
** 89-15140-1 WASHER-lock, fixing alternator to bracket

B10 late
** 81-30830-1 BOLT (2)
** 89-11208-1 NUT (1)
** 89-15138-1 WASHER-spring lock (2)
** 89-15438-1 WASHER-plain (1)

B110
** 81-31022-1/08131-02210 BOLT (1)  [fixing alternator rear]
** 89-15140-1/08915-14010 WASHER-lock (2)
** 81-30830-1/08130-83010 BOLT (fixing alternator front) (1)
** 89-11208-1/08911-20810 NUT (1)
** 89-15138-1/08915-13810 WASHER-spring lock (2)
** 89-15438-1/08915-43810 WASHER-plain (1)
E10
** 81-30385-1/08130-83510 BOLT (fixing alternator rear) (1)
** 89-15138-1/08915-13810 WASHER-lock (2)
** 11713-M0100 NUT-stopper, alternator bracket

Details, Late

アルタネータ　マウンテング

1974 and up 1200s

Adjusting Bar
11715-H6200 BAR-ADJUSTING, ALTERNATOR

Fixing Adjusting Bar
08120-82062 BOLT [engine end]
23164-H0100 BOLT [alternator end]

Bracket 
11170-H6200 BRACKET-ALTERNATOR -7801
11170-H7401 BRACKET-ALTERNATOR 8110-
* superseded 11170-H7400 BRACKET-ALTERNATOR 7802-8109

Fixing alternator to bracket
08915-43810 WASHER [plain] (2)
08915-13810 WASHER [lock] (2)
23100B
11915-U0105 BOLT (2)
23100F 
11713-21000 SHIM T=0.3 (As Required)
11713-21001 SHIM T=0.2 (As Required)

Fixing bracket to engine block
08131-03510 BOLT [rear]
08131-04210 BOLT [front]
08915-14010 WASHER (2)

V-Belt
See Fan Belt

Wiring

See: Alternator Wiring article.

Testing

The alternator should output 13.5v to 15v at 1200 RPM. A voltmeter is the only tool needed for testing.

The charge lamp on the instrument panel should come on before the engine starts, and go off while the engine is running. If the CHG light does not come on with the key (before the engine starts), then the alternator will not charge -- so replace a burned-out bulb right away.

If your charging system is not working correctly, see Alternator diagnoses

Disassembly & Maintenance

See Alternator Maintenance

Part Numbers

http://www.rockauto.com

23100-U0100 Stock 35 amp Hitachi LT-135-13
- 23100-U0102 Hitachi LT-135-35B
- 23100-U0103 Hitachi LT-135-35C
- OE+ AL208 $18.04 USD
- BECK/ARNLEY 1860077 $35.79
- BOSCH AL231X,AL232X $50.79

B210 A13 engine 50 amp Hitachi LT-150

23100-P0101 ASSY-ALTERNATOR OP -0973
23100-H6203 ASSY-ALTERNATOR OP 1073-0874
- replaces 23100-P0101, 23100-H6200, 23100-H6201, 23100-H6202

B210 A14 engine 50 amp Hitachi LT-150
NOTE: Does Not fit A12 engine.

Looks like stock 35A
23100-H7200 0974-0375
23100-H7201 0475-0975
23100-H7202 0575-0177
23100-H7203 0277-0777
23100-H7204 replaces H7200/01/02/03
Bosch AL237X ['http://www.rockauto.com/catalog/x,carcode,1210813,parttype,2412,EPIsubcategory[97],Alternator,partGroup,18' $75.79 RockAuto.com]

Mid-model

オルタネータ

23100-U0113 8102-8109 Mitsubishi 12V-35A
23100-U0112 7804-8101 Mitsubishi 12V-35A
* 23100-U0110 -7511 Mitsubishi 35A AG203
* 23100-U0111 7512-7803 Mitsubishi 35A AH203

Late Model

See main article: LR135

Brushes

Hitachi LT

Nissan 1970-1978
Subaru 1977-1978
Isuzu (Chevrolet) 1975-1987

B110

23133-H0300 ASSY-HOLDER,BRUSH $5.95

Brush Assembly with cover

23133-U0101 ASSY-BRUSH B210 -0874 $10.97
- replaces 23133-U0100
23133-P0100 ASSY-BRUSH B210 0974 $12.19

Niehof WA560 $9.99 Partsamerica.com

Fits

Mazda 1986 323
Mazda 1986-1987 B2000
Mazda 1981-1986 626
Mazda 1981-1985 GLC
Mazda 1981-1984 B2000
Datsun 1970-1973 240Z
Datsun 1974 260Z
Datsun 1973-1976 610
Datsun 1974-1977 710
Datsun 1980-1981 810
Datsun 1975-1977 B210
Datsun 1975-1977 620
Datsun 1976-1977 F10
Datsun 1973-1974 620 PICKUP

Brush Assembly

23135-H0300- F B110, B210 A13 $5.95
23135-H0301- E B110, B210 A13

Brushes, requires soldering

STANDARD MOTOR PRODUCTS Part # JX107 $2.79

Regulator

B110 uses an external voltage regulator. It uses a connector with spade terminals, and so is different from B210 which uses round pins. It controls the alternator output to between 13.5-15.0 volts.

See main article: Voltage regulator

Upgrades

If you are running high-power headlights, off-road lighting systems, or high-power stereo gear, using a high output alternator is called for. Or, if you need to replace the 1200 alternator and have free or inexpensive access to different alternators, you might consider a swap. Lastly you might have a bad Voltage regulator, and by swapping to an internally-regulated alternator reliability increases since these use a solid-state (no moving parts) regulator.

See main article: Alternator Upgrades

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Alternator

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