Hello Everyone,

I have just painstakingly replaced my original '88 740GLE 4 cylinder engine with a used one. The original engine seized because the oil pump (which was replaced) broke. It broke at the key where it mates with the gear (driven by auxilliary shaft) which in turns drives the oil pump.

I have since reassembled everything. I want to make sure that the pump is operating as intended. I do not want to have to do this again =)

Is there a quick method of checking that the pump is operating without having to pull anything apart? Possibly pressure check?

I would appreciate any help 8)

Many Thanks,

nic

Nic, To check for pressure remove the timing belt put a socket on the intermeadit shaft sprocket nut and turn it clockwise this will test the oil pump if you can use a drill motor to turn the socket the would work better. Good luck

IPD sells a very nice reinforcing ring for $8.95 that is supposed to prevent exactly what happened to your original engine. If the engine is not installed, buy a reinforcing ring and install it for peace of mind. To test oil pressure, connect a guage where the oil galley has a plug just forward of the oil pressure sending unit. The plug is 6mm internal hex, and the threads are 1/4 inch NPT. Simply unscrew the plug and connect a gauge. I just had one of the the oil supply tube seals fail, and that is exactly where I tested the oil pressure. The gauge is still connected and under the hood.