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Joined: Jul 2010
Posts: 58
Shade Tree Mechanic
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OP
Shade Tree Mechanic
Joined: Jul 2010
Posts: 58 |
Hi All, I am rebuilding my vane style oil pump from my '27 Capitol, but after a few attempts still can't get it to pump. It seems ok when I put it back together, but when I give it a trial run with a bucket of oil, I use a drill and the oil doesn't flow into or out of the pump at all! Could this pump just tooo wore out to work? Please help!!
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Joined: Dec 2001
Posts: 10,379 Likes: 1
Technical Advisor ChatMaster - 10,000
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Technical Advisor ChatMaster - 10,000
Joined: Dec 2001
Posts: 10,379 Likes: 1 |
Are you immersing the pump into the oil up to about 1/2 way so it can be primed?  
RAY Chevradioman http://www.vccacolumbiariverregion.org/1925 Superior K Roadster 1928 Convertible, Sport, Cabriolet 1933 Eagle, Coupe 1941 Master Deluxe 5-Passenger Coupe 1950 Styleline Deluxe 4-Door Sedan 1950 Styleline Deluxe Convertible 2002 Pontiac, Montana, Passenger Van 2014 Impala, 4-Door Sedan, White Diamond, LTZ 2017 Silverado, Double Cab, Z71, 4X4, White, Standard Bed, LTZ If you need a shoulder to cry on, pull off to the side of the road. Death is the number 1 killer in the world.
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Joined: Jul 2010
Posts: 58
Shade Tree Mechanic
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OP
Shade Tree Mechanic
Joined: Jul 2010
Posts: 58 |
Thanks Ray!! That's what it took...one more question though, the picture of the same oil pump from the flip book, 28 Engine Rebuild, page 73, shows a washer that goes with the pump. Where does that washer go? When I initially took off my pump, there was no washer! Thanks again for all of your help!
Its guys like you that keep guys like me afloat...er..rollin'
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Joined: Dec 2001
Posts: 10,379 Likes: 1
Technical Advisor ChatMaster - 10,000
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Technical Advisor ChatMaster - 10,000
Joined: Dec 2001
Posts: 10,379 Likes: 1 |
Thanks for the comments. The washer/bearing goes on top of the oil pump shaft where it engages the distributor. Anyone working on a 4-cylinder engine or components, should spend some time checking out the "School is in Session" Flip Book.
RAY Chevradioman http://www.vccacolumbiariverregion.org/1925 Superior K Roadster 1928 Convertible, Sport, Cabriolet 1933 Eagle, Coupe 1941 Master Deluxe 5-Passenger Coupe 1950 Styleline Deluxe 4-Door Sedan 1950 Styleline Deluxe Convertible 2002 Pontiac, Montana, Passenger Van 2014 Impala, 4-Door Sedan, White Diamond, LTZ 2017 Silverado, Double Cab, Z71, 4X4, White, Standard Bed, LTZ If you need a shoulder to cry on, pull off to the side of the road. Death is the number 1 killer in the world.
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Joined: Nov 2001
Posts: 19,758 Likes: 64
ChatMaster - 15,000
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ChatMaster - 15,000
Joined: Nov 2001
Posts: 19,758 Likes: 64 |
In the future, or for others putting these pumps back together: liberally oiling the internal parts when putting the pump back together will often provide enough of a seal to prime the pump. Other times squirting oil down the outlet several times and then waiting a short time between squirts can prime the pump.
How Sweet the roar of a Chevy four!
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Joined: Jul 2010
Posts: 58
Shade Tree Mechanic
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OP
Shade Tree Mechanic
Joined: Jul 2010
Posts: 58 |
After rebuilding, testing, installing and priming pump, still no oil pressure to the gauge. All of the lines are clear! Can't even get oil to the filter!! My next step is going to be to try and get the oil distributor out and have a look see. Anybody know of an easy way to get that out?? I can't seem to break the brass coupler away from the distributor!! WD-40? Other penetrating oils?
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Joined: May 2002
Posts: 1,213 Likes: 1
ChatMaster - 1,000
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ChatMaster - 1,000
Joined: May 2002
Posts: 1,213 Likes: 1 |
If you remove the oil pipe nuts on the gauge line & the line to the filter,remove the large steel nut that retains the oil pressure relief valve in the oil distributor body,and see if it's there.It could be either missing or the spring is broken/rusted.If the valve is missing or damaged,the oil will just go straight into the distributor that supplies the troughs for the big ends,and you'll get very little,or no reading on the gauge.
CJP'S 29
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Joined: Dec 2001
Posts: 10,379 Likes: 1
Technical Advisor ChatMaster - 10,000
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Technical Advisor ChatMaster - 10,000
Joined: Dec 2001
Posts: 10,379 Likes: 1 |
Hi MickeyC, If you will click on the information below it will take you to a very interesting flip book. Once you are there use the index to find the answer to your question. In most cases there will be pictures to assist you with your problem. Give it a try. "School is in Session"
RAY Chevradioman http://www.vccacolumbiariverregion.org/1925 Superior K Roadster 1928 Convertible, Sport, Cabriolet 1933 Eagle, Coupe 1941 Master Deluxe 5-Passenger Coupe 1950 Styleline Deluxe 4-Door Sedan 1950 Styleline Deluxe Convertible 2002 Pontiac, Montana, Passenger Van 2014 Impala, 4-Door Sedan, White Diamond, LTZ 2017 Silverado, Double Cab, Z71, 4X4, White, Standard Bed, LTZ If you need a shoulder to cry on, pull off to the side of the road. Death is the number 1 killer in the world.
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Joined: Feb 2011
Posts: 277
Backyard Mechanic
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Backyard Mechanic
Joined: Feb 2011
Posts: 277 |
I had a few pumps on the bench and decided to clean them up and bench test them as instructed above.
My method, correct or not, I placed a sheet of 220 wet/dry carbide paper on a flat metal surface and tried to resurface the cap to get rid of minor rust pits and wear marks then I did the main body. Put the vanes back in, submerged it in oil and still nothing. The original factory gasket was .017" thick. I got some .010 and .005" and still no good flow, some but not too good. I ordered some .004 and .002" thick Kapton sheets (2 sheets, 12"x 12" , one of each was about $17) , I used the .002 and it doubled the flow. The .002 is almost as thin as the clear cover on a cigarette pack.
Kapton is heat resistant...no gasket was too tight, would't turn so something has to be in there, better than spending the $300 for a gear pump.
just an FYI
ron
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