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Thread: diff lock light

  1. #11
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    Well the light comes on when I pull the knob ,and with the switch removed I can see the arm move forward , BUT if I jack up the front of the truck with the knob in and no light I cannot turn the front wheel while it is in gear . Iam new to this 4 wheel drive stuff ,but I would have thought that with the knob in I would have had the rear diff connected to the motor but the front free to spin . am I missing something or is the truck in 4 wheel drive all the time ,meaning something is wrong with the disconnect When I was fitting the new diaphragm the sliding gear was Forward which I thought would mean it was out of 4 wheel drive???. s
    Quote Originally Posted by thomson View Post
    With the switch removed I can see the arm move when you pull the knob , do you know where the power comes from ? I hope I do not need it now I have the circuit board coming but I have found a replacement for the light assy part number AMR2628 if you go onto paddock spares site and type in that number you will see it .Your suggestion of takeing the lamp out and checking for power/ earth is a good one and would have save me a lot of time and a better understanding of the system

  2. #12
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    Well the light works with the knob pulled ,and with the switch removed I can see the arm move forward , BUT with the front wheels in the air and the knob in I cannot turn the front wheels. Iam new to this 4 wheel drive stuff but I would have thought with the disconnect in the motor would be connected to the rear wheels but the front free to spin Am I missing something or is something wrong with the disconnect . when I was fitting the new diaphragm the sliding gear was forward

  3. #13
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    Quote Originally Posted by thomson View Post
    Well the light works with the knob pulled ,and with the switch removed I can see the arm move forward , BUT with the front wheels in the air and the knob in I cannot turn the front wheels. Iam new to this 4 wheel drive stuff but I would have thought with the disconnect in the motor would be connected to the rear wheels but the front free to spin Am I missing something or is something wrong with the disconnect . when I was fitting the new diaphragm the sliding gear was forward
    These are a full time 4wd system and power goes to both front and rear axles all the time via a centre differential in the transfer case to compensate for "wind up" between the front and rear drive shafts when you turn corners etc. When you pull the knob it moves a sliding collar which is on the centre diff onto the front drive shaft so both front and rear diffs turn at the same speed and you have proper 4wd. You say the light now comes on when you pull the knob as it should. If you have both front wheels off the ground and a normal "open" front diff when you turn one front wheel the other one should turn in the opposite direction. If you have a locker in the front diff that won't happen and you will have to put the transfer lever into the neutral position for the front wheels to both turn in the same direction.
    Have you fitted a new vacuum actuator recently? If so did you locate the yoke into the sliding collar properly when you fitted it - forward on the "sliding gear" is the engaged position.
    Cheers......Brian
    1985 110 V8 County
    1998 110 Perentie GS Cargo 6X6 ARN 202516 (Brutus)

  4. #14
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    When I pulled the diaphragm it looked to me that the slider was in the forward position ,if this is so you are telling me the unit failed in 4 wheel drive ??. I did try to be careful in the refitting of the new unit to make sure the fork went into the slider , but mistakes do happen . So how do I test to see if it is in 4 or 2 wheel drive .So am I correct in thinking that with 4 wheels in the air ,with the light out the front wheels would seem to be turning slower than the rear .With the light on all 4 would seem to be doing the same speed ???.

  5. #15
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    Quote Originally Posted by thomson View Post
    When I pulled the diaphragm it looked to me that the slider was in the forward position ,if this is so you are telling me the unit failed in 4 wheel drive ??. I did try to be careful in the refitting of the new unit to make sure the fork went into the slider , but mistakes do happen . So how do I test to see if it is in 4 or 2 wheel drive .
    The forward position is "locked". I have described in my previous post how to check if it is locking/unlocking.
    Cheers......Brian
    1985 110 V8 County
    1998 110 Perentie GS Cargo 6X6 ARN 202516 (Brutus)

  6. #16
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    Well after fitting a new diaphragm and a new light module ,I have found that my car has been in locked 4 wheel mode . How long I do not know as I only bought the truck a short time ago . I hope no damage has been done to it in this time .The steering loads have decreased quite a lot , I had thought the steering was heavy but reading threads about people fitting power steering , I thought it must have been normal. Anyway the camping set up is finished in the back , and hope to head off to the cape in late April

  7. #17
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    Good to hear you've got it sorted, and thanks for reporting back with the outcome.

    Steve
    1985 County - Isuzu 4bd1 with HX30W turbo, LT95, 255/85-16 KM2's
    1988 120 with rust and potential
    1999 300tdi 130 single cab - "stock as bro"
    2003 D2a Td5 - the boss's daily drive

  8. #18
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    Don't drive it on bitumen with the diff lock on.

    You will break things... expensive things.

  9. #19
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    Quote Originally Posted by dranoweb View Post
    Don't drive it on bitumen with the diff lock on.

    You will break things... expensive things.
    A bit late for that!

  10. #20
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    It would seem so...

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