1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Daihatsu Hijet Repair Manual Help

Discussion in 'General Truck Info' started by Bugalydosh, Jan 14, 2021.

  1. Bugalydosh

    Bugalydosh New Member

    Can anyone share their pdf repair manual for a Daihatsu Hijet?
     
  2. Jigs-n-fixtures

    Jigs-n-fixtures Well-Known Member

    Please go to the blue field near the top of the page, and follow the link to add the information on your truck to your signature line, so we know what model and options you have. It makes a difference when we try to help with problems.

    And, welcome aboard.
     
  3. Bugalydosh

    Bugalydosh New Member

    Thank you Jig's
    Not looking for one for my truck, just 660 Hijet's in general, trying to diagnose why the 4WD isn't working in one of them (not the lines or the under seat solenoid)
    A repair manual would really help.
     
  4. Koffer

    Koffer Active Member

    What’s not working ? Is the green light not coming on but you hear the clicking from the relays ?
     
  5. Limestone

    Limestone Well-Known Member

    Bug,
    Over a period of time, these connections get a white film or corrosion on them. Clean all your connections and apply some Di-Electric Grease to them! Good Luck!
    Limestone
     
  6. Jigs-n-fixtures

    Jigs-n-fixtures Well-Known Member

    Well on mine there is a vacuum canister mounted on the left side under the left hand seat. It connects to the manifold through a one way valve, and then has three lines out. Each line goes to a pair of electrically operated vacuum switches, one set for the front axle, one for the transfer case, and one for the rear axle. The vacuum switches control diaphragms which either engage or disengage the respective unit. You can check the vacuum diaphragms with a hand vacuum pump, to be sure they are good. You should be able test the vacuum switch sets by applying voltage. But, I’m not sure they aren’t ground switched.

    Electrically I have the 4wd switch on the center of the dash. And, a rear axle switch on the dash, right of the steering wheel.

    The axle lock, and the 4wd, are both only available in 1st and 2nd gear in high range, so there has to be some kind of switch in the shifter system. Not sure where that is, but would guess it is at the shifter, under the cover. But it could be back at the transmission. I haven’t needed to track mine down yet.

    I have a pick/tip so I can raise the bed and have direct access to the rear vacuum switches, and can then play with the switches in the cab and test wires at the switch connecting plugs, and figure out what wires are doing what. The wiring diagrams I have don’t really show locations of the vacuum switches, and the
     
  7. ttc

    ttc Active Member

    There is also a set of vacuum switchs by the air box.
     
  8. ttc

    ttc Active Member

    I have a manual for the 4x4 system it isn't exactly as on my 95 but close. I think the 2 sets of vacuum switchs are wired through each other. But it's been a few years since I worked on mine.
     
  9. Jigs-n-fixtures

    Jigs-n-fixtures Well-Known Member

    I think the vacuum switches by the air box, are fitted on the trucks with A/C to increase the idle speed when the A/C is on.
     
  10. Nautydog1

    Nautydog1 Member

    vacuum leaks are 85% of carb and idling problems, use a vacuum gauge or carb cleaner, carb cleaner will send the engine to high idle if you have a vacuum leak, make sure the vacuum port in the air cleaner canister is working properly, also check that your vacuum advance hose isn’t cracked coming off the distributor to the vacuum manifold tree. The vacuum manifold tree is brass on the bottom to go in to the block and plastic on top. Plastic wears out with time and will break or leak, which causes a vacuum leak. Some manifold vacuum trees are 3 or 4 port, make sure to replace it with a new one. When I buy parts I buy 3 at a time that way I have them on hand or in case they can’t get them any more. The vacuum manifold tree is located behind the carb. If you looking at the carb from the right side of the bed, it will be to your 1 O’clock tucked down inside. Remember to use a marker or different colored tape to mark the vacuum lines so you know where everything goes back too! Good luck!’:cool:
     

Share This Page