Maine Bearings


Well-known member
Apr 18, 2007
Hi All:
Sometimes an engine will fight with you from the start. That is what is happening.

I got new main bearings for my '96 Disco 1 (4.0 Litre).
That middle bearing ( which is a "thimble" type) was way too tight. When I got it seated, the shaft would not turn. It seems like the bearing was too wide and bound the crankshaft. When I finally got the shaft loose the bearing was broken (see below).

The Shaft was polished but not resized.

Any ideas what is wrong?

broken bearing.jpg