oil pump need help!

[dt8068]

I dropped the lower oil pan today to check the oil pump bolts, and 1 bolt that holds the pump to the block was sitting in the pan and 2 bolts that hold the oil pump together were also in the pan.

well my question is after replacing the bolts there is a lot of play (more than a half inch) in the pump chain and I need to know how to adjust it. I need help asap.

[PhilipJCaputo]

wish I could advise... but I'm planning on checking my bolts tonight.


it could be that your chain is stretched out.... it happens on motorcycles...

[Bill R.]

stand but you get the idea. Adjust to the tolerance listed

[DaCan23]

Are you also suppose to drop the upper pan too? Is there "other" bolts to check there?

[dt8068]

I cant seem to find where the chain adjustment socket is in that diagram.
Is it accessible from only removing the lower oil pan?

[yaofeng]

I cant seem to find where the chain adjustment socket is in that diagram.
Is it accessible from only removing the lower oil pan?

See picture. The hex nut is at the base of the pump below the bolt (or above it with the engine right side up).
http://i21.photobucket.com/albums/b274/yaofengchen/BMW_95_540/Re-exposureofDSC_2671.jpg
http://i21.photobucket.com/albums/b274/yaofengchen/BMW_95_540/DSC_2667.jpg
http://i21.photobucket.com/albums/b274/yaofengchen/BMW_95_540/DSC_2656.jpg
http://i21.photobucket.com/albums/b274/yaofengchen/BMW_95_540/DSC_2608.jpg

[dt8068]

Thank you for the diagram and pictures, I finally was able tighten the pump chain and I went for a drive afterwards and everything seemed fine.

The oil pump bolts should definitely be checked especially the ones on the pump body as all of mine were pretty loose.

[PhilipJCaputo]

doing mine now (oil pan sitting under car on drive way)

one bolt from the pump had fallen out into the pan.... I'll probably take all the oil pump bolts out that I can and loctite them back in.


haven't been able to check to see if the pump bolts are loose yet.


dt8068.. did you take the pump chain off? or just tighten around it?

[PhilipJCaputo]

oh yeah... I'm clearly missing the chain cover thing.... and I've got the newer style gasket, so I'll bet someone has done this before

[dt8068]

I was missing my chain cover also and I left the chain on for tightening all the bolts and adjusting the chain tension. Also locktited all the bolts.

[632 Regal]

dammit! I planned this project for tomorrow and forgot to get brake cleaner...:(
nothings open now and dont want to work on a hot engine.

[PhilipJCaputo]

dammit! I planned this project for tomorrow and forgot to get brake cleaner...:(
nothings open now and dont want to work on a hot engine.


I picked up carb cleaner on accident.... it got the bolts clean :D

[PhilipJCaputo]

I was missing my chain cover also and I left the chain on for tightening all the bolts and adjusting the chain tension. Also locktited all the bolts.
I loctited a few of them... not sure what good it was going to do becuase the threads on the bolts came out soaked in oil....


I tried to remove the sprocket, but I think I just ended up cranking the entire engine, because everything started to move and the nut didn't get any looser.


how tight did you set the chain? I left it with a slight bit of play (like 3-4 from a push in one direction to a full push in the other)


now to look up (again) exactly how to reset the oil lights....

[632 Regal]

10 mm of side play, look at Bills picture post.

[yaofeng]

I was missing my chain cover also and I left the chain on for tightening all the bolts and adjusting the chain tension. Also locktited all the bolts.

Not every pump has a cover. Neither of mine do (the 144k engine and the 66k one). There are more than one versions of pump.

[Bill R.]

states to remove the cover and throw it away. On certain serial numbers the cover could break and cause engine damage





Not every pump has a cover. Neither of mine do (the 144k engine and the 66k one). There are more than one versions of pump.