B10 Alternator
Datsun 1000 uses the early Datsun alternator, A Mitsubishi or Hitachi unit with a four-spade rectangular connector. It was available in 25A or 30A versions. This is the same alternator as used by Datsun 411 and early Datsun 510. It is the same diameter as the more modern Datsun 1200 and 510 35A alternator.
Overview
Hitachi LT125-02 AC300/12WR 250W output @ 12V
Uses Voltage Regulator TL1Z-10A (Tirrill leaf-spring type with 3-point constant voltage relay and pilot lamp relay)
Part Numbers
B10 Datsun 1000 Hitachi 23100-18001 LT125-D2 * same as 520 J13 engine certain version 23100-18005 LT125-D2 (ISO) 23100-H0100 LT125-06 from 1969 23100-H0300 LT125-06 from 1969 Coupe 23100-A4600 LT130-65 (op.) Van, T * same as 510 certain version 23100-A4601 LT130-65 (op.) Coupe
B10 Datsun 1000 Mitsubishi single-lug 23100-18010 214-886 23100-18015 214-886 (ISO)
B10 Datsun 1000 Mitsubishi two-lug 23100-H0110 AF2025A 23100-H0110 AF2030A5 (op.) (exc. Coupe) 23100-H0110 AF2030A6 (op.) Coupe
BRACKET-alternator 11710-18000 <x> 11710-H0100 11710-H0100 11710-27720 506W alternator (op.) Rally
Wiring
See Basic_Alternator_Wiring#1960s_Alternator
Also see wiring diagram on Datsun100.com
Early 510
https://i297.photobucket.com/albums/mm219/ddgonzal/sightings/forum/510_4-wire.jpg
BW GR RL GB
Datsun 510 JDM (3-lug mounting) 1967-1970 23100-21000 LT130-41 Hitachi 23100-21005 LT130-41 Hitachi (ISO) 23100-21600 LT140-66 Hitachi (op.) 23100-21605 LT140-66 Hitachi (op.) (ISO) 23100-A4800 LT140-53 Hitachi PP, PY 23100-21005 LT130-41K Hitachi P510 23100-A4600 LT130-65 Hitachi * SAME AS LATE DATSUN 1000 23100-A4601 LT130-72 Hitachi 23100-21010 12V-30A Mitsubishi 23100-21015 12V-30A Mitsubishi (ISO) 23100-A4610 12V-30A, AG2030A Mitsubishi 23100-A4611 12V-30A, AG2030A Mitsubishi 23100-21615 214-028, 40A Mitsubishi PP,PY 23100-A4810 AG2040A Mitsubishi PP,PY
410
NOTE: Positive Ground, so will not work on the 411
Datsun 410 JDM (3-lug mounting) 23100-61200 12V-300W Mitsubishi * 23230-12210 ASS'Y-DIODE SET 23100-10600 12V-300W Hitachi * 23230-61200 ASS'Y-DIODE SET 23100-10601 12V-300W Hitachi
411
2-ear, NEGATIVE GROUND
23100-16512 from E# 23488 23100-16510
W W WB B
Roadster
SR (U20 engine) seems to have single-lug mounting 22177-25502 SR 23100-20111 12V-30A
SP (R16 engine) has three-ear mounting 22177-10810 SP 23100-14602 SP 1968 23100-12200 SP early 22177-10400 SP early
520
520 JDM J13 23168-10600 BRACKET 23100-14802 25A HITACHI 1965 11711-13201 BRACKET 23100-18000 HITACHI (from '66,4) 23100-16700 HITACHI (from C # 520-095001) 23100-18010 MITSUBISHI AS2025A1 (from '66,4) 23100-16710 MITSUBISHI 30A (from C # 520-095001)
Variations
The alternators themselves appear to have no part numbers on them, but possibly they have faded with time.
Mitsubishi 4-wire 3-ear alternator
https://i297.photobucket.com/albums/mm219/ddgonzal/sightings/forum/20110907141027DSC05211.jpg https://i297.photobucket.com/albums/mm219/ddgonzal/sightings/forum/20110907141038DSC05212.jpg https://i297.photobucket.com/albums/mm219/ddgonzal/sightings/forum/20110907141052DSC05213.jpg
Mitsubishi-Prestolite, 82mm between ears
https://i297.photobucket.com/albums/mm219/ddgonzal/sightings/forum/20120523025117DSC07555.jpg
Datsun Roadster Hitachi 4-wire, 3-ear alternator, 98mm between ears
https://i297.photobucket.com/albums/mm219/ddgonzal/sightings/forum/20120523025255DSC07564.jpg https://i297.photobucket.com/albums/mm219/ddgonzal/sightings/forum/20120523025234DSC07562.jpg https://i297.photobucket.com/albums/mm219/ddgonzal/sightings/forum/20120523025245DSC07563.jpg
Mounting
1000 alternator has one-lug lower boss (early 1000) 1000 alternator has two lower ears (later 1000) 1200 alternator has two lower ears
Early (1000) alternator versus Datsun 1200 alternator.
Same front mounting face Same diameter fan pully early 1000 Bottom mounting lugs differ later 1000 same mounting lugs
Other Mounting
With some units, using a longer bolt and a spacer is needed as on this R16 engine:
http://images.ttyr2.com/albums/1964%20Datsun%201500%20Roadster/alternator_side.jpg
Or this bracket, for 3-ear alternator being used with 2-ear alternator (note the triangle plate on the timing cover):
1966 roadster (1600?)
https://i297.photobucket.com/albums/mm219/ddgonzal/sightings/forum/1996_roaster_alternator.jpg
Positive Ground
1964 & 1965 Datsuns used positive earth alternators
- All Datsun 1500 Roadsters (SPL310) used positive ground. Alternators were used 1964-1965 (1962-1963 used a generator).
- Datsun 410 had positive ground alternators (1964 & 1965). The Datsun 411 (1966-1967) went to the modern negative ground.
¤