gearbox

[Mrbolly]

Clutch pack burnt out, very common as the gearbox was never designed to carry that weight or tow, just a car gearbox with a different back end bolted on. Some add after market turbos to the diesel engine, maybe 100,000 kms at best and the tranny goes up in smoke but then it's 3rd gear that dies.

I'd be tempted to get a temporary permit to drive it, in most states you can get one for a week and do the drive to get it nice and warn using the gear selector to manually change the gears and see if it frees up, if it does, service the trans and adjust the bands, if it doesn't free up, all you have lost is the cost of the permit.

Cheers, Alan

[BruceS]

I think I'm correct in saying it has been parked for 12 months because of the gearbox fault. Trying it again probably won't achieve much?

[Mrbolly]

I think I'm correct in saying it has been parked for 12 months because of the gearbox fault. Trying it again probably won't achieve much?

Ahhh that was something I didn't appreciate, it was parked because of the fault not the fault arising from the time it was parked.

[T1 Terry]

Sadly, the only real fix is to change it to a manual transmission or an auto out of the V8 Holden or Ford, the Navara auto was never built to handle heavy work. I believe there are Kevlar clutch plates now available for some transmission but they are generally the type used for drag race cars and the Navara auto doesn't actually fit into that class Some engineering guru might be able to machine up parts to add extra clutch plates to improve the second gear clutch pack but unknown if that would be enough. The death of the clutch pack is caused by the change back from 3rd to 2nd under full power with the load exceeding the weight of an empty Navara, as soon as the first bit of slip occurs the facings start to burn and then there is even less friction, the death spiral is very fast from that point onwards.

T1 Terry