Ferret erratic knocking from left hand side front.

[Richard Farrant]

Originally Posted by Malcolm Towrie

Robin,
Why would a plugged breather cause such a catastrophic failure?

Malcolm

Malcolm,
Failures are often due to lack of oil or low levels. With a blocked breather the pressure build up could force oil out of the bevelbox / inner tracta via the cork seal around the inner tracta housing, also it could well pass the seals in the challis and overfill the outer tracta and hub, seen this quite often. It pays to check the levels frequently.