Oil pump removal.

[Dharn55]

Had the engine out for lifters, AOS and water pump. As part of this I tried to get the oil pump off. Took out all the bolts, but the pump would not come off. Tried to lever/pry it off, loosened up a little, gaskets moved, but the pump would not come off. Ended up cutting the metal gasket that combines the water pump and the oil pump and retorqing the oil pump. Now I have a little leak from the oil pump at the bottom where the coolant flows through the pump.

Anyone have experience with taking off the oil pump? Any help would be appreciated.

[txhokie4life]

Had the engine out for lifters, AOS and water pump. As part of this I tried to get the oil pump off. Took out all the bolts, but the pump would not come off. Tried to lever/pry it off, loosened up a little, gaskets moved, but the pump would not come off. Ended up cutting the metal gasket that combines the water pump and the oil pump and retorqing the oil pump. Now I have a little leak from the oil pump at the bottom where the coolant flows through the pump.

Anyone have experience with taking off the oil pump? Any help would be appreciated.

What might be making it difficult is the hex shaft from the ims that feeds into the oil pump.

When I have done it in the past, I pulled the oil pump apart, pulled the hex shaft out

with quite a bit of effort, then wiggled, twisted and ever so gently pried, the

oil pump housing away from the block. It took quite a bit of effort and some patience.

I think the gasket has some ridges in it that when you clamp it down once fills the space, but

since you undid it, you can never get it to seal quite right again. I don't remember the

gasket for that piece -- but a similar gasket at the lower right hand where the coolant hose connects

drove me bonkers due to this.

good luck with it.

Mike

[Dharn55]

Thaks for the advice. Tried taking apart the pumps itself, but that did not help. Still would not come off. Ended up taking out the engine carrier studs, and one other stud that pass through the pump housing. This alowed me to use a rubber mallet to slightly rotate the housing back and forth. This with a little levering got it off. It turned out that there was a little corrosion where the housing of the oil pump fits into the crankcase. Not anywhere near the orings, but enough to make it hard to get it out. Amazing what 10 years of midwest winters and salt will do to a car.