Don"t touch that bolt

[J Franklin]

Originally Posted by Dick Steinkamp

I'm scratching my head on this one. Can you explain further?

I can't see of a way the pump would go over pressure and need relief. It basically pumps oil under very low pressure to the valve chamber. From there, the oil flows out the "window" on to the timing gears and/or out the oil drain back pipe back to the pan. There is no restriction that I can see that would build pressure. Under what circumstances is too much pressure obtained?

If it does for some reason go over pressure and the pump drops and depresses the spring, where does the oil then go?

Thirty wt oil in the early morning is quite viscous The pump tries to pump lots of oil and sometimes needs a relief. the oil spills back into the pan. This is why most oil pumps incorporate a spring loaded relief valve. Something would have to already be seriously wrong to press hard enough to uncouple the pump.

When I place the pump I use a piece of paper to shim the pump to block and it holds the pump up while replacing the pan.