The rear difflock on my truck has never locked since I've owned the truck, I did an oil change on the engine & axles this weekend & as I had the tools out decided to investigate why the locker isn't working.
Now when you switch the rear locker on & off you can hear the motor in the actuator whirring round but the light on the dash never goes solid & the rear wheel (when jacked up) always spins, so I've confirmed it's definitely not locking & not just the indicator switch.
First I pulled the breather hose out & sprayed WD40 down there as suggested by Rob (I think) previously. Tried spinning the rear wheel while my daughter cycled the switch. This didn't work.
Next I took the cover plate off so you could see the shift fork & actuator rod.
I managed to lock & unlock the rear diff manualy by levering the shift fork across backwards & forwards & what seems to be happening is that the fork is sliding on the rod.
Is the shift fork supposed to be fixed on the actuator rod? i.e locked in place by the bolt? As it doesn't appear that the rod is moving at all.
Oh yes, when you do cycle the selector switch the rear actuator is very noisy compared to the front diff.
Now when you switch the rear locker on & off you can hear the motor in the actuator whirring round but the light on the dash never goes solid & the rear wheel (when jacked up) always spins, so I've confirmed it's definitely not locking & not just the indicator switch.
First I pulled the breather hose out & sprayed WD40 down there as suggested by Rob (I think) previously. Tried spinning the rear wheel while my daughter cycled the switch. This didn't work.
Next I took the cover plate off so you could see the shift fork & actuator rod.
I managed to lock & unlock the rear diff manualy by levering the shift fork across backwards & forwards & what seems to be happening is that the fork is sliding on the rod.
Is the shift fork supposed to be fixed on the actuator rod? i.e locked in place by the bolt? As it doesn't appear that the rod is moving at all.
Oh yes, when you do cycle the selector switch the rear actuator is very noisy compared to the front diff.