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Diff change low to high

Discussion in 'Daihatsu Hi jet' started by johns, Feb 14, 2008.

  1. johns

    johns Guest

    Hi new to mini trucks and to the board. I was the winning bidder on some 1995? hijet trucks that came from a plant. They are in low and I need to find out how to change to high. A guy that used one at the plant said they could be changed and the company ordered them in low side. They also have a governor that is set at 25 MPH that I need to figure out how to disconnect. I also need to find a good place to get parts? thanks for any help you can give Johns
  2. scesnick

    scesnick Member


    Do you mean they are in "4wd Low" right now? and you want to get them into "2wd High" ? I'm sure it is a simple process but i am not familiar with the Hijets.
    As far as parts go, I would suggest visiting some of this boards sponsors sites. You can find the banner at the top of the page.
  3. greg0187

    greg0187 Moderator Staff Member

    If they are left hand drive. I believe they are electronically governed or by the transmission. Is it a 3 speed?
  4. johns

    johns Guest

    They are 2 wheel drive and left hand steer. thanks johns
  5. johns

    johns Guest

    And they are 4 speeds. thanks Again johns
  6. greg0187

    greg0187 Moderator Staff Member

    When you get to the 25MPH mark do they cut off or are they wound out?
  7. johns

    johns Guest

    Yes they just hit 25 and start surging, I unpluged the wires that plug in to module that is on the side of the tranny with the speedometer cable to it. Then it dies plug the wires back in and it starts back up. They are also real low gear no need to start out in first you can use 2nd or 3rd. thanks johns
  8. greg0187

    greg0187 Moderator Staff Member

    Sounds like you may have found something. Maybe its just a dry contact thats normally closed. Use an OHM meter to see if it has continuity. If its near zero try twisting the two wires together.

  9. johns

    johns Guest

    FYI: Just recived e-mail from the plant the secret is

    Take Oil out of Tranfer Case
    Take Off Drive Shaft
    Remove back plate from transfer case
    Remove Snape Ring from Shift Rail
    Then put everything back together
    Pull lever on floor to high

    thanks still working on govenor problems thanks L.J.
  10. matt419

    matt419 New Member

    John, there is an access panel on the left side of the transfer case. It has 4 bolts holding it on. You can shift it into high there. It is atight squeeze but that is how I was told to do it. I have 1 just like it and it is in low range.
  11. greg0187

    greg0187 Moderator Staff Member

    Good Info. Thats crazy its 2WD but has a transfer case?
  12. Gawdzuki

    Gawdzuki New Member

    2wd Suzuki Samurai's have a transfer case...;).
  13. Dan

    Dan Member

    I had a kid on the crew in the early 90's that figured out the governor and i was constantly removing a paperclip from the pigtail on the daihatsu's transmission.
  14. golfcartguy

    golfcartguy New Member

    Ok, Somebody please tell me how to remove the governor for my non - US mini.
  15. Dan

    Dan Member

    all of your other posts say that you have a lefty american cushman "White truck"???

    They are the most complex governors ever created if you have anything powered by mitsubishi that was americanized for US specs. Transmissions were internally blocked from using all of the gears. ignitor boxes (ECU's) will limit the rpm's and cut off the fuel. fuel relays shut down the pump and close fuel solenoids. speed sensors built in to the instrument cluster shut it down too. all of these things are tied together and will not operate at all if you interfere with any of them

    I worked on figuring it out for a while and gave up. I'm sure there is a way but, i quit trying and i gutted the ignition system, bypassed the fuel relays, modified the distributor, flipped the rotor, advanced the ignition wires one terminal , installed a new "MSD" ignition system from a speed shop. i took apart the transmission and rebuilt it without some of the plugs and blocking collars that i found to be in the way of the shift rails.

    Search the threads and you'll find most of your questions have been asked and answered many times over.
  16. Don't give up, Don!!

    I'm relying on you to figure this crap out :eek:

    Only reason why I'm considering getting another LHD Mitz :D
  17. Dan

    Dan Member

    i didn't give up on beating the limiters. i just quit trying to use the existing system. Replacing the ignitor with the new "MSD street fire" ignition fixed all of my problems. I either abandoned or bypassed the things that it was controlling. rpm and speed sensors were abandoned along with the coil wires. fuel relays were bypassed. distributor slightly altered to be able to set correct timing. I'm going to work on the traction and suspension issues now that it has nothing to hold it back.
  18. golfcartguy

    golfcartguy New Member

    Thanks again Dan

  19. That's cool

    I have a leftover MSD 6AL unit with timing control from my 70 T/A :cool:

    The timing control box allows up to 15* advance/retard


    I know you said the stocker had 30* of timing built in, but would the 15* on the MSD timing control be enough so that you wouldn't have to alter the distributor?

  20. Dan

    Dan Member

    That might just do it. I couldn't retard it enough because of physical restrictions so i moved the wires around by one tower and advanced it to the correct timing. Its bolt is about 1/2" outside of the mounting slot in the distributor. I used a "6a" for the first experiment and then found the cheaper "street fire" unit for the second one. the old plugwires didn't handle the extra voltage well so i changed them also. only after being shocked a few times like i was hit with a stun gun.
  21. Great :)

    The timing control knob came in handy when I used to drive my T/A daily with 13.5:1 CR :rolleyes:

    Anything less than race gas meant I had to pull timing waaaay back or risk sounding like a diesel truck :eek:

    Yikes, I can only imagine what 116 octane is going for nowadays :eek:
  22. Longmtnman

    Longmtnman New Member

    Has anyone been able to remove the snap ring through the access cover on the transfer case? I took the cover off and can see the ring with a mirror but don't think I have enough hands/coordination to manipulate the light, mirror and long needle nose pliers. I might make an attempt but it is a risky job. If I can get the ring off the shaft and drop it, I'll have to possibly take the transfer case apart to retrieve it. It may cause me to say a bad word.
  23. gumballf355

    gumballf355 Member

    It was very hard to do... I had to stick a strong magnet in there to catch the clip from falling into the gear case oil. Speed limiter was a breeze tho.
    Last edited: Jul 17, 2008
  24. Longmtnman

    Longmtnman New Member

    Once the clip is gone and the fork moves to high, what keeps the fork in place? Is there an indentation on the shaft for the spring loaded ball bearing to settle into?? My Hijet is 100% off road and I'm not trying to get more top speed, just fewer revs when I'm on the straight and level.
  25. gumballf355

    gumballf355 Member

    The fork is on a slide shaft... all you have to do is remove the clip and make sure you don't drop it.
  26. Radar

    Radar Member

    this is real good detailed info but I wonder if I can get my 4wd van xfer case into a low gear. Anyone tried that with the same method but in reverse?
  27. gumballf355

    gumballf355 Member

    Same thing, just pull the clip.
  28. havman

    havman New Member

    1991 daihatsu 2 wheel drive

    My mini is a 2 wheel drive. Left hand steer. Same problem? About 25 mph it just shuts down. Slow it down a little and you can go again. What is the speed control switch under the dash on right side against fire wall. When I switch it it, it does not seem to affect anything including the speed. Any help would be appreciated.
  29. gdelony

    gdelony Member

    I have a 1989 that had the same issue, mine now hits 57MPH in high gear. If your engine is like mine; I removed the C-Clip in the tranny as mentioned in a previous posting and removed the high and low cut off solenoids from the carburetor. I then plugged the solenoid orifaces of the carb with short metric bolts ensuring no fuel leaks and ensuring the bolts did not interfere with the fuel stream. Once this was done, the trick was to resize the internal fuel bowl oriface(where the solenoid plunger once was internally limiting fuel to the jets at high rpm) to the proper size to avoid flooding. If this sounds as helpful I can elaborate. I made no other modifications and the speed was there.

    This modification has proven 100% reliable, my computer module does not even know the difference, full power to redline.
  30. gumballf355

    gumballf355 Member

    There is actually a much easier way to fix the speed limiter problem... no need for the removal of any solenoids and plugging up orifaces in the carbs. Good troubleshooting though.

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