Thread: Big end seal

It’s the rear main you’re talking about? The big end, is the end of the conrod that connects to the crank.
Best part of a day to pull the gearbox and replace the seal.
Get the PCV valve (Positive crankcase ventilation) checked they gum up and you get pressure build up in the sump that blows the seals. @gqhoon is on to it I’ve only done one patrol and it was years ago.