Differential locks not locking
My request for guidance refers to a SWB G500 (09/04):
In normal use I do not have occasion to lock the differentials often enough so every about 2 weeks I engage and disengage the locks in a no strain straight line gravel situation - just to confirm & keep things working.
Yesterday, while I was moving very slowly, I tried to lock the centre differential and it immediately obliged. I then tried to lock the back differential Although the yellow light came on immediately, the lock never engaged (the red light remained off). I drove like this VERY SLOWLY for about 1km. No red light.
Of course no question about locking the front differential: only the yellow light was turned on.
Am I doing something wrong?
Any ideas?
:oops:
Hi Lack of use and lots of dust..or mud...and heat can cause the system to malfuction..would suggest a thorough inspection and service of the system including on the diff housings and some repeated cycling of the difflocks will remedy the problem rgds
HELP: THE SAGA GOES ON:
I went to a (large) local authorised MB service centre to check the system. By their own admission (actually quite honest) their expertise in G-wagons did not allow them to proceed beyond the immediately obvious and, in that sense, they could not find why the system malfunctions.
In repeating the lock/unlock cycles daily, I have found some marginal improvement but not enough to pacify. I do not know how immediate should the reaction to the lock-requests be: it take about a kilomeyer of slow straight line driving to actvate all 3 locks. On the other hand they disegage almost instantly after a request.
The centre lock consistently engages instantly; its the other two locks that bother with their unpredictability. Another point I am unclear about: can a lock request be accomplished if the car is not moving (stuck with wheels spinning) or with stationary non-rotating wheels with gear stick at N and engine running?
HELP
The Vehicle must be in motion, the wheels needto have a differential speed to engage the diff locks, driving in a straight line does not necessarily give you that right condition.
Turn the Steering wheel lock to lock slowly, whilst on the move, this should allow the diff locks to engage.
Regards,
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Thank you for your advice.
Should I continue activating the locking mechanisms every now and then in order to maintain operability of the system? How often?
:roll: