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Datsun 1200 was fitted with Mitsubishi or Hitachi alternator,.which were a lightweight (8.4 pound) 35 AMP 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.
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Early
Hitachi Alternator LT-135 (35 AMP model) was used on all Datsun 1200s up into the 1980s. Mitsubishi was the second source.
Interchange
Strict interchange: Alternator (35 AMP model) B110 1970-1973 B120 1971-1985 B210 1974 standard duty USA 510 1968-early 1971 USA 521 1969-early 1971 USA 620 1973-1979 USA
Loose interchange: Many kinds of alternators. See main article: Alternator Upgrades
Late
Japan-market 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. Also used by Australia N10 E13 and other Nissan.
Lucas 15AC
Australian assembled 120Y have a Lucas alternator. Lucas 15-A.C.
See Main Article: Lucas alternator
Lucas AS123
Big-flange alternators were used in South Africa on the B140.
See Main Article: Lucas alternator
Bosch
Late model Datsun in Australia use a Bosch internally-regulated alternator.
See Main Article: Bosch alternator
Mounting
Also see Head Face - alternator mounting bosses
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 right-side position to make more room for accessories such as Air conditioning pump or Smog pump.
Details, Early
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 Bolts Fixing Adjusting Bar ** 08110-81610 BOLT, fixing adjusting bar ** 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)
BRACKET B10, B110, B120, E10 * 11710-H0100 BRACKET-alternator BOLTS FIXING BRACKET B110/B120 - using studs in engine block ** 08911-20810 NUT (2) ** 08915-43810 WASHER-plain (2) E10 - using bolts into engine block ** 08313-02210 BOLT, fixing bracket (2) ** 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 ** 08131-02210 BOLT (1) [fixing alternator rear] ** 08915-14010 WASHER-lock (2) ** 08130-83010 BOLT (fixing alternator front) (1) ** 08911-20810 NUT (1) ** 08915-13810 WASHER-spring lock (2) ** 08915-43810 WASHER-plain (1) E10 ** 08130-83510 BOLT (fixing alternator rear) (1) ** 08915-13810 WASHER-lock (2) ** 11713-M0100 NUT-stopper, alternator bracket
Details, Late
1974 and up 1200s アルタネータ マウンテング
Adjusting Bar 11715-H6200 BAR-ADJUSTING, ALTERNATOR [more curved, most vans] 11715-H7201 BAR-ADJUSTING, ALTERNATOR [less curved, sedan+coupe+(van.f/cold)] Bolts Fixing Adjusting Bar 08120-82062 BOLT [engine end] 23164-H0100 BOLT [alternator end]
H62 curved adjuster | H72 adjuster
Bracket * 11170-H6200 BRACKET-ALTERNATOR -7801 * 11170-H7401 BRACKET-ALTERNATOR 7802- > 11170-H7400 Bolts Fixing bracket to engine block * 08131-03510 BOLT [rear] * 08131-04210 BOLT [front] * 08915-14010 WASHER (2) Bolts 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) V-Belt * See Fan Belt
H62 low mount | H72 high mount
Moving Bracket
Got a late-model A-series engine? Bolt the alternator to the left side down low for a cleaner look. No factory bracket bolt bosses here, but a simple adapter plate can be fabricated from a flat plate. Bolt to the block with the three outside holes, then bolt the alt. bracket to the two close holes. Size up a new fan belt and you are done.
Adapter Plate bolts to engine left side, cast-iron bracket bolts to the plate
Upside down
Another method
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
Part Numbers
- 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 $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 23133-P0100 ASSY-BRUSH B210 0974 $12.19
Niehof WA560 $9.99 Fits thes USA models: * 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