The clunking could be spud shaft, center diff lash, a drive flange or diff lash
it could also be a mount or an exhaust bracket.
I would hope they go ok with a synthetic oil as the OEM oil is a synth.
Printable View
Hi Dave,
Drive flange, ah ha, I haven't checked them yet, this is very interesting, sometimes when accelerating I get this subtle thud, feels like a wind up thud if you know what I mean, very short duration, on the drivers side, feels like it is under my right foot, doesn't do it all the time. I thought it had something to do with the brakes however I've checked them couldn't find anything loose.The clunk in all honesty feels to be coming from the centre to the back of the vehicle, checked the exhaust mounts and had to replace one, they are all good now.
"Spudshaft" got me with this one........... where is that?
Thanks for the pointers.
Cheers Marty
My money is on the shims in the CDL being worn out,they provide the gold sheen to the oil;););););)
If you can afford it,and intend keeping the vehicle,look into an Ashcroft ATB CDL.Those who have them swear by them.
Andrew
Deep socket was the answer. Jack under the back right corner of transfer case and a helper ready to lower jack while I balanced the TC on the Jack and down it came.
No need to touch the left side transmission mount but does help to drop the assembly down as far as left side mount will let it come before working TC back on guide studs. My studs are a bit short so I might have to change them before I reinstall. Also would help to remove studs projecting backwards on the back part of the TC as I was able to juuuuuust slide it down past the end of the output shaft in the transmission.
The output shaft on the transmission has some "wobble" up down left and right. If I wobble it upwards it causes transmission fluid to dribble out the rear seal of the transmission. My guess is I should change out the transmission rear seal but is there an issue with the output shaft having movement? Should it be rock solid along its axis and not have wobble I can do by hand?
I suspect that this would be ok. On a Falcodore, when the tail shaft is removed there is a fair amount of sideways play in the tranny output shaft and this is normal, as the tailshaft by design supports the output shaft.
I can't say for sure, but I suspect the same would apply to a ZF, with the difference being your TC input gear being the rear support for the ZF output shaft..
Donor TC is in no problems. Clearly not all slack in drive train sorted as still some jumpiness to gear changes up and down. Not having played with diff before is there some acceptable amount of freeplay rotation for them which I could use to start diagnose where issue might be?