Craig Bower
Member
I am in the process of freshening up a fairly low mileage m90 and have run into a conundrum. The only information that I have been able to locate about shimming the oil pump seems to refer to new a new chain and sprocket and says to shim the pump up until the drive chain deflects slightly under light pressure. Seems a subjective for engine machine work. My chain and sprocket look to be in great shape but I really don’t have a good reference dimension to measure the chain against for stretch. I did find one reference stating that reused chains and sprockets should have additional clearance than new but no mention of what it should be. It seems that new chains are readily available but the pump sprockets are no longer available.
Thoughts or suggestions?
Thoughts or suggestions?