Driveshaft Donuts/bearing Replacement?

[Graham]

Hi everyone,

Has anyone changed their flexible couplings and driveshaft bearings?

My driveshaft is still balanced (no rumble) but I can hear bearing noise when I let off the accelerator or if the car is coasting. When I got under the car to inspect, I see cracks in the flexible couplings from age and use. As for the reason I got under there, I figure the supporting bearing assy is factory with 250k miles (probably needs replacing). This car has already had all the common gremlins fixed and this car passes Mass(same as CA) emissions and safety.

This is a 94 Sc400 with 250k miles. I've worked on cars for a while and can do advanced DIY (like rear axle bearings on normal cars), so I appreciate any advice! :)

[grnsc40095]

Graham, The links lists below should answer your questions.

http://www.clublexus.com/forums/suspension...ing-issues.html

Page 2179 gives steps on the removal flexible couplings.

http://www.zshare.net/download/5185463529a5bf95/

[osucool]

Mine sounded that way too so I changed the intermediate bearing, no change. Its pricey too.

I swapped the driveshaft for a better one I picked up with an ebay engine ....less slop in the interchange portion and much better rubber, but little change.

The simple answer.

Transmission mount was the issue.

Changed it for a new one and its all smoothed out no noises on decelleration.