Thread: 300 Tdi Viscous Bearing Replacement with pics

Viscous bearing replacement by Jboot51 and Rick79.(mission completed)


We used John Deere Part#JD9257. (approx. $35)
This Bearing has two shafts. An 18mm and a 16mm.
We need to use the 16mm shaft and trim it down.

The 18mm shaft needs to be cut as close as possible to the bearing face.
We ended up with about 5mm of the 18mm shaft protruding.


The 16mm shaft needs to be cut down to 26mm, measured from the bearing face. There is a bit of tolerance here, +/- 1.5mm would be ok.


These bearing shafts are quite hard and were cut using a 1mm cutting disc.
Very slowly a little at a time so as not to allow too much heat build up.


Because the new bearing is about 7mm longer in the main body, it will protrude into the timing chest. There is plenty of free space behind the cover so this should not cause any problems.

Bearings in photo show from top to bottom.
John Deere bearing cut down to suit. ( fresh out of the freezer to help installation)
Untouched John Deere Bearing.
Original LR Bearing.


To remove the Flange from the shaft, I made a puller from an old viscous coupling. As per other threads on this forum.
Dismantled an old viscous hub unit, drilled and tapped a m10x1.5 thread through the retaining nut.



Most important thing is to measure the distance of the front face of the flange to the front face of the cover.
I had two covers here and both measured in at 11.05mm


For the support and pushing pieces I used some sockets I had lying around.
These worked well and the dimensions are as shown


The press I used is my old faithfull SuperCheap Auto 6-tonne press with a 4 Tonne jack in it.
The cover fits nicely between the uprights.


Hope this helps someone in the future.
Cheers,
Tony

Well documented mate!

...all in all, this is definatly worth giving a crack fellas, and really wasnt that hard at all for those contempating the most cost effective way of doing the job.

I mean yeah you can buy the bearings from a couple of well known Land Rover workshops here in aus, but at over $100 ...it really was a peice if cake to just cut down the JD bearing, and put the save money elsewhere into your Landy