Removed prop shaft today, firstly to make the pinion bearing adjustment but also as a general alignment check.

First problem, my deep impact socket didn't have the depth to overcome output spigot so..opted to swap diff for original, if only to eliminate the whine.

Filled with fresh oil and re-fitted, set off for a test drive..you guessed it..whinnnnneeee....still there.

Whilst disappointing there is some upside, namely all that effort that went into changing the wheel bearings was valid as the diff is okay, smooth as silk.

So I have a spare tested diff which can be sold with some assurance, secondly by the process of elimination there's not much else to replace, lol

The viscous fan was removed a while back as not really necessarily here in UK, so that leaves four, possibly five whirring things:

Alternator

Water pump

Power steering pump

TC rubbing against inside of bell housing




..ladies and gentlemen place your bets please..

__________________
David


1996 Mercedes S124 E300TD - 129k - rolling restoration project -

1998 Mercedes W210 300TD - 118k (assimilated into above vehicle)