Mud-club

Vehicle & Technical => Discovery => Topic started by: mm3107 on January 08, 2007, 14:17:16

Title: Driveline backlash and vibration
Post by: mm3107 on January 08, 2007, 14:17:16

Hi folks. Some advice needed, I have just got a 93 Disco 200 tdi and although it's pretty decent there are a couple of issues.
1. Rather concerning vibration/shudder above 55-60mph. It appears to come from the front.
After looking thru various past posts I have checked prop uj's and there appears to virtually no play front or back. No play in the plined sections either. No excessive wear in suspension bushes either.
2. But while doing these checks there does seem to be a fair bit of free play in the centre diff. Now from looking at posts this could either be the transfer box or gearbox, how do you tell the difference??
The gearbox does feel nice and tight, with the notchy 2nd gear very rarley rearing it's ugly head.
If I can get these things sorted that would be great because it's a really clean model with good power and economy.

Any advice would be greatly welcomed.

Cheers
Mark  :D

Title: Driveline backlash and vibration
Post by: hobbit on January 08, 2007, 15:10:37

when was the oil last changed on the gear/transfer box, worth dropping and doing if not sure :wink:

Title: Driveline backlash and vibration
Post by: ben_haynes on January 08, 2007, 18:14:14

Check your front wheel bearings and and your steering damper

Title: Driveline backlash and vibration
Post by: Skibum346 on January 08, 2007, 21:34:57

Quote from: "ben_haynes"

Check your front wheel bearings and and your steering damper

And your track rod ends...

Title: Driveline backlash and vibration
Post by: Range Rover Blues on January 08, 2007, 22:19:21

Vibration, well typically at 30-35 MPH and again at 70-75MPH would be the propshaft, you may not notice it at 30 for a start, so 60 -65 could be the prop, or the wheels.

Backlash, they do that, stop worrying.

Title: Driveline backlash and vibration
Post by: mm3107 on January 10, 2007, 00:04:46

Thanks for the advice folks. Will try all of the above and let you know how I get on.

Cheers
Mark

Title: Driveline backlash and vibration
Post by: Tyke on January 10, 2007, 02:13:21

Quote

30-35 MPH and again at 70-75MPH would be the propshaft, you may not notice it at 30

Secondary vibrations and harmonics here RRB  :wink:


Day before xmas eve I went out to get a few late pressies for he grandkids . . . . that vibration I'd had for a week or so previously suddenly turned into a 'somethings gonna break' type vibration.


Ended up sorting the front prop uj's for the afternoon.


Truth known, I've done enough uj's to recognise the warning signs so I was aware what was coming . . . . . but the tiiming of it was a bit of a [!Expletive Deleted!].


Either way I'd been under the motor a few days before and giving the prop/uj's a good shake about . . . . . even though there was little evidence of free play in the bearings they failed a couple of day later . . . .  :?



But hey . . . . it's a Land Rover . . . . . [!Expletive Deleted!] happens  :lol:








Christmas was saved and thanks to Simon, (Simon Services, at Warmfield), for letting me shove the truck on his ramps at such short notice . . . . I was back on the road within the hour  :wink:

Title: Driveline backlash and vibration
Post by: Lord Shagg-Pyle on January 10, 2007, 02:40:33

Check the panhard rod bushes and bolts. Wear in those could cause similar problems.