Forum:
Over here in little old New Zealand I have purchased a 94 Rocky. It's a 1.6 Petrol Manual one. Anywho, I have noticed that the transfer case has a little slop, or play in it. when I back off the throttle, clutch, or do anything to change the load from acceleration to deceleration or vise versa there is a definite audible clunk noise, although you can hardly feel it in the truck it can be heard outside.
I got under the truck and when you move the rear driveshaft a little you can make the clunk noise. It's definitely coming from the transfer case.
Can somebody tell me what this is? Is it meant to be there? i have no idea. Although you can't really feel any slack while driving, it is there, and pulling up at the supermarket and backing off with a clunk is most embarassing.
Cheers!
Try greasing the universal
Try greasing the universal joints at each end of the prop via the grease nipples, that should keep them quiet. If the problem persists youi might need new Universal propshaft joints.
1985 Fourtrak 2.8turbo, 8" Lift, on 33,12.5,15s
1985 Fourtrak 2.8turbo, Spring over axel, on 35,12.5,15s
clunk
I AGREE, GREASE THE UJ'S ON EACH END OF THE PROP. SHAFT. THE GREASE NIPPLES ARE DIFFICULT TO GET TO AND OFTEN COMPLETELY OVERLOOKED.
IT WOULD BE WORTH CHECKING THE UJ'S ON THE MAIN REAR PROP AT THE SAME TIME, THESE ARE A BIT EASIER TO SEE AND GET TO.
OLDMINIMAN
M J Young
Cheers, but no good...
Thanks for your help gus but it definitely is not the universals. There is absolutely no play in them and they are far from being dry. If you have any ideas on what this could be let me know, but thank you for helping, it's good to know someone is willing to help me.
CHEERS!
CLUNK
Well having eliminated the UJ's we are down to worn splines at the gear box end of the prop or a worn diff. You can adjust the diff slightly by removing the flange and prop and then atempting to take up any slack in the crown wheel bearing using the nut inthe centre of the diff flange. Normally that nut is very tight.
As a matter of interest does the diff whine on over run? check also the tightness of the bolts securing the prop flanges to the diff. and that sufficient oil is in the diff.
Any noise from slight movement will be exagerated because it will resonate in the hollow prop shaft. Beyond that you could be looking at halfshaft wear. As I say I am thinking as I write of possibilities aandlooking at the cheapest first
OLDMINIMAN
M J Young
Clunk clunk whoops!!
I would have said to start with its the uj's like everyone else but they go 'ting' rather than 'clunk', jack up the back and just check its not the rear diff all loose by putting it neutral and spin a wheel left and right vigerously, if no noise is heard, then im sorry but off comes your transfer box and whip on another one - easiest way, im sure youll find some spares somewhere close to you in a scrap yard or somewhere!! be warned, if the teeth are damaged on the gears in the box it could suddenly go at any time because it will be snatching - whoops!
Full of ideas but no time to do them!!
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Clunky Gearboxes
Usually this is the end nut on the main gearbox shaft coming loose, from the rear of the transfer case look for the aluminium cover plate which has two humps in it.
Remove the cover and you will expose the end of the gearbox shafts, using a 30mm spanner, tighten the top shaft nut as tightly as you can; ensure you peen the nut correctly into the groove to lock it.
This should stop the lateral movement in the shaft which usually causes this problem as it is slack in the shaft, and the main bearings which are moving