Supercool_Bill
New member
Hey guys. I have the engine out of my bike replacing all of the gaskets (engine leaks)
When I tried to take apart the oil pump on my R75/5 to clean and inspect it i had a difficult time sliding out the outer ring (sorry don't know the name of it) It kept getting jammed on the way out. I thought this odd until I got it out and discovered that the outer surface of that ring had lines machined into it. Then I looked at the motor and the cavity that it set in had matching lines machined into it. I thought maybe this was how it was built so i looked up used ones on Ebay and found that they are supposed to be smooth. Bummer. I am guessing that at some point a piece of debris got stuck in there and did some machining.
My question- Do I need to do anything about this or will the oil pump still work fine the way it is? I asked two BMW buddies of mine. One said that I need to replace the ring part and take the engine block to a machine shop to have them press a metal ring into the cavity. The other buddy said it should be fine the way it is, just clean the surfaces up some with some emery cloth.
What do you guys think? I already put the oil pump cover back on with a new gasket but I have not put my flywheel back on yet so if I am going to do anything I need to do it now. I have limited funds so the idea of paying a machine shop to fabricate a ring ant installing it scares me. Also what if they do something wrong and screw things up even more?
Looking for advice from more "experts" on this sort of thing.
When I tried to take apart the oil pump on my R75/5 to clean and inspect it i had a difficult time sliding out the outer ring (sorry don't know the name of it) It kept getting jammed on the way out. I thought this odd until I got it out and discovered that the outer surface of that ring had lines machined into it. Then I looked at the motor and the cavity that it set in had matching lines machined into it. I thought maybe this was how it was built so i looked up used ones on Ebay and found that they are supposed to be smooth. Bummer. I am guessing that at some point a piece of debris got stuck in there and did some machining.
My question- Do I need to do anything about this or will the oil pump still work fine the way it is? I asked two BMW buddies of mine. One said that I need to replace the ring part and take the engine block to a machine shop to have them press a metal ring into the cavity. The other buddy said it should be fine the way it is, just clean the surfaces up some with some emery cloth.
What do you guys think? I already put the oil pump cover back on with a new gasket but I have not put my flywheel back on yet so if I am going to do anything I need to do it now. I have limited funds so the idea of paying a machine shop to fabricate a ring ant installing it scares me. Also what if they do something wrong and screw things up even more?
Looking for advice from more "experts" on this sort of thing.