Parts - Crankshaft

Spigot bearing removing

Either fill the cavity with heavy grease (rubber gerase is good) then centre a tight fitting spigot in bearing and strike heavy blow dead square with club hammer - should loosen and shift it out. Or drive down the side with a small sharp chisel, pick out with a scriber or other strong but fine tipped tool.

Spigot bearing fitting

Dave Friday:' Morning all, anyone know how far the bearing should be tapped into the crankshaft?

HarryMann: About flush with the inner step, so that the full length of the outer race is supported... past comment has suggested it's not too critical, so don't leave it hanging out the end or distort it by whacking it in too hard up against any inner shoulder...

Dave Friday: I checked the depth of the old old before oiking it out[4mm] and had tapped the new one in a bit further before checking [4.67mm],there is a lip in the crank bore and its probably touching this [my daughter said the lip is to stop it going any further in]. Mine seems a little further in than yours, but the crank end looks slightly different to mine[just the depth of the inner chamfered edge].

PS Bentley says 1.5mm, Just kampers 15mm !!!

HarryMann: That's an ADG/AAZ crankshaft, so the detail is slightly different.

Crankshaft rear oil-seal journal

If wear grooves can be felt with a finger nail, its not a bad idea to try to remove any edges by polishing, to prevent the oil-seal lip being damaged during installation. Ensure roundness is not compromised. Brasso or a very fine (500 ~ 800 grit) wet and dry used carefully.

Alternatively, when installing the seal in is housing, it can sometimes be fitted in a slighly different position such that the lip sits on a fresh part of the journal. Lube well prior to installing the housing.