Pampera/TXT endfloat
 

A couple of months ago the crankshaft nut came loose on my 2002 MK3 Pampera, wedged against the primary cover and stopped the engine. Loctite and 40Nm sorted that out. Now after about 400 miles the engine vibrates at low revs and knocks on idle. The cause seems to be excessive end float on the crankshaft, I've not measured it but it seems considerably more than the 0.02-0.03mm recommended.
My main concern is WHERE did this end float come from? There's no apparent radial play in the main bearings or thrust washers to wear and the big end seems OK so I'm a bit reluctant to split the cases at the moment.

The basic engine is the same as a TXT 250 Edition I believe.

Anyone got any ideas?

Colin