Hi, new to here and hoping someone can help diagnose my transmission issue.
Series 3, 88" 1982
Problem is in 2WD the landy feels rough and there is a vibration in all gears, gets worse with speed and load
If I put in gear and roll downhill, forward or backwards, with the clutch depressed there is a clunk, clunk, clunk in all gears, high or low range, but not in neutral, sounds to come from the gearbox area but difficult to tell.
The landy has recently been put back together, all mountings tight, all oil fresh, new u/Js
If I jack up the rear wheels and run in gear can hear more of a graunching sound than a clunk which sounds to come from the handbrake area but with a screwdriver sound more like the rear diff bearings.
Wheel brakes are free
Handbrake is free
Rear Wheel bearings are fine
Taken inspection plate of back of gearbox, tiny amount of play between shaft and gear but very little.
If I remove the rear propshaft noise goes away
If I drive in front wheel drive, with rwer prop removed she is fine
Taken out rear diff, looks and feels fine, no play smooth to turn
No significant wear in half shafts / flanges
Rear propshaft looks and feels fine
Gearbox rotated by hand in and out of gear is smooth but there is some backlash and if I rock the rear output shaft backwards and forwards I can simulate the clunking when rolling
Was planning to swap front and rear diffs, but having removed the rear and not finding anything thought I would check for other ideas here before going further.
Any ideas, I'm stumped!
Thanks
Dave
Series 3, 88" 1982
Problem is in 2WD the landy feels rough and there is a vibration in all gears, gets worse with speed and load
If I put in gear and roll downhill, forward or backwards, with the clutch depressed there is a clunk, clunk, clunk in all gears, high or low range, but not in neutral, sounds to come from the gearbox area but difficult to tell.
The landy has recently been put back together, all mountings tight, all oil fresh, new u/Js
If I jack up the rear wheels and run in gear can hear more of a graunching sound than a clunk which sounds to come from the handbrake area but with a screwdriver sound more like the rear diff bearings.
Wheel brakes are free
Handbrake is free
Rear Wheel bearings are fine
Taken inspection plate of back of gearbox, tiny amount of play between shaft and gear but very little.
If I remove the rear propshaft noise goes away
If I drive in front wheel drive, with rwer prop removed she is fine
Taken out rear diff, looks and feels fine, no play smooth to turn
No significant wear in half shafts / flanges
Rear propshaft looks and feels fine
Gearbox rotated by hand in and out of gear is smooth but there is some backlash and if I rock the rear output shaft backwards and forwards I can simulate the clunking when rolling
Was planning to swap front and rear diffs, but having removed the rear and not finding anything thought I would check for other ideas here before going further.
Any ideas, I'm stumped!
Thanks
Dave