Thread: Ex ADF LT95A gearboxes

Thanks for the heads up, Brian.
valuable information!

Originally Posted by Bearman

In the last month I have dismantled and recoed 3 gearboxes that have come from the AFM auctions. All 3 have had at least a couple of serious problems that probably necessitated the changeout. 1......All 3 have had the input shaft bearing lock tabs bent indicating that they have been installed incorrectly I.E. pulled together with the bellhousing bolts instead of manually making sure they are fully seated in the spigot bush BEFORE tightening the bolts. This results in excessive shaft endfloat when you power on or back off throttle and thrusts the input shaft into the 3/4 gear synchro hub resulting in failure/excessive wear of the thrust bearings/washers on 3rd gear. 2.....Transfer case input gear (the one on the end of the mainshaft that drives the transfer case gears and the winch pto) NOT loctited in place resulting in excessive gear and mainshaft spline wear. 3......Reverse gear idler incorrectly adjusted resulting in tooth damage and ultimately failure of the idler and layshft and 1/2 synchro hub. 4......Some still have the earlier type intermediate shaft assembly bits which are more prone to jumping out of gear if not set up correctly and and all 3 have had a finger tight intermediate shaft bolt torque setting. I.E finger tight instead of torqued to 125 ft/lb. I would urge anyone who has a perentie to check these. Easy enough to check. If your gear lever moves back/forward when you accelerate/decelerate in 3rd or 4th gear it indicates movement in the spigot shaft which is most likely the lock tabs bent on assembly. Check the transfer case for sloppiness, it could be the centre diff thrust washers/gears or the input shaft gear/splines - if your pull the rear cover or the 3rd axle drive off (6X6 only)you can see if it's the gear/splines by rotating the shaft and watching the play or sloppiness. Check the torque setting on the intermediate shaft bolt. It WILL result in jumping out of gear and eventual failure of the complete shaft if not torqued correctly.

Thanks Bearman - I often wonder why my perentie is on it's third LT95 at 120k....

watching with interest.
The gearbox in mine is as far as I can tell, the original one with 150k on it.
It's a bit sick. I've pulled teeth out of the filter the first two oil changes, plus a large glob on the magnet plug. The synchro on 2nd is dying, so sooner rather than later I'm going to have to drop $$$$ on new gearbox and clutch.

It would be nice to know the correct installation procedure so it doesn't get ruined before you even start the motor!

Thanks Brian,

Just checked how my front bearing was seated and moves back and forward a few mm with the input shaft.
Glad i realized before i got it in

cheers

My 6x6 is jumping out of first gear in low range would the above be causing this or is it something else .

Other workshops I know have also found problems with the ex ADF gearboxes.

It looks as if you'll have as much part time work on these as you want Brian .

Originally Posted by camel58

My 6x6 is jumping out of first gear in low range would the above be causing this or is it something else .

First gear or low range. Unusual to jump out of gear in low and not hi range.
Could be that there is excessive wear/endfloat on the mainshaft causing it. Any other symptoms, grating 1st gear etc.

Originally Posted by 87County

Other workshops I know have also found problems with the ex ADF gearboxes.

It looks as if you'll have as much part time work on these as you want Brian .

Possibly too much!!!
I am trying to retire