Jon_Tallis
Member
- Joined
- Jul 29, 2012
- Messages
- 142
- Country Flag
I've got a rear axle problem on the 80. Happened 3 times now. Pull away from parked, get maybe 50yds and I get a REALLY heavy knock from the rear axle - heavy enough to feel right through the vehicle. First time I was towing, thought I had a trailer brake problem, reversed about 20yds and hey presto, noise gone.
About 3 weeks and a good few hundred miles later, she does it again, this time with no trailer. Again, reversed 10 yds, no noise. Drove about 20miles, parked up, pulled away, same knock except REALLY heavy, feel like the left rear is driving over a few bits of timber! Reversed, no better, drove a bit at walking pace, no better, but noise got a little better as I turned left then disappeared when I turned sharp right. Drove home 10 miles, no noise.
Truck is a '97 80 series petrol auto. 240k miles. I've owned it 9 months and it has been really well looked after. Wheel bearings are all good, prop UJ' s are all tight and well greased. Diff is a bit noisy when towing but just rumbles, no knocks etc.
Had the rear disks off tonight and no smoking gun there.
Ran the truck on stands and there's a tiny knock from the rear diff, but hardly audible.
The noise, when it appears is so horrific in really worried there's something come adrift in the diff, but these things dont just fix themselves!
So, questions...
Has anyone experienced (and fixed) anything similar?
I'd there anything else I should check before I bite the bullet and rip the diff out?
Also, if I take the diff out, should I take it out in locked position or unlocked? Looks like I have to take the kick actuator off anyway so maybe that answers the question....
About 3 weeks and a good few hundred miles later, she does it again, this time with no trailer. Again, reversed 10 yds, no noise. Drove about 20miles, parked up, pulled away, same knock except REALLY heavy, feel like the left rear is driving over a few bits of timber! Reversed, no better, drove a bit at walking pace, no better, but noise got a little better as I turned left then disappeared when I turned sharp right. Drove home 10 miles, no noise.
Truck is a '97 80 series petrol auto. 240k miles. I've owned it 9 months and it has been really well looked after. Wheel bearings are all good, prop UJ' s are all tight and well greased. Diff is a bit noisy when towing but just rumbles, no knocks etc.
Had the rear disks off tonight and no smoking gun there.
Ran the truck on stands and there's a tiny knock from the rear diff, but hardly audible.
The noise, when it appears is so horrific in really worried there's something come adrift in the diff, but these things dont just fix themselves!
So, questions...
Has anyone experienced (and fixed) anything similar?
I'd there anything else I should check before I bite the bullet and rip the diff out?
Also, if I take the diff out, should I take it out in locked position or unlocked? Looks like I have to take the kick actuator off anyway so maybe that answers the question....