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Restoration & Repair Tips Board

Re: freeing stuck diesel injector pumps

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Author  [Modern View]

10-06-2013 05:37:14

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I don't have any great faith in PB Blaster, but I've freed up many stuck in-line pump plungers. Depends on how bad and what made them get stuck to start with. Had a few Fords with SIMMs that got stuck from lack of oil. Pried loose with a screwdriver, filled the oil box and away they went.

If all depends on what part of the plunger is actually stuck. The CAV pneumatic pump is basically just a box holding a camshaft with pistons riding on it. Note that if things don't work out - all the new parts are available from a place in England. $130 for all new barrels and plungers. $40 for a new governor diaphram.

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Robert Major

10-06-2013 09:45:12

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 Re: freeing stuck diesel injector pumps in reply to jdemaris, 10-06-2013 05:37:14  
Hi Thank for the reply .the pumps have sat a few years like 20 I guess. As far as i can tell that's all is wrong. Ive had the simms like that to. some you get lucky others are boat anchors. these are just the element plungers I think the cam followers are all free. the ones where the elements move are anyway. Thats interesting about the parts. that pump rebuild would be 1500- 2000 with the parts round here. I wonder if it would be cheaper to send the whole pump back to the U.K ,even with shipping costs. Regards Robert

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10-06-2013 18:22:46

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 Re: freeing stuck diesel injector pumps in reply to Robert Major, 10-06-2013 09:45:12  
The plungers were leaking into the cambox in my CAV DES inline pump. It ran it that way for a few year and finally bought all new barrels, pistons, and delivery valves and fixed it right here in my shop. Cost me less then $200. Got the stuff from Peter Slater in England.

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Robert Major

10-06-2013 22:48:45

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 Re: freeing stuck diesel injector pumps in reply to jdemaris, 10-06-2013 18:22:46  
Ok thanks for that :) I have actually looked at his site online this year, seen his advert in a U.K tractor magazine I subscribe to here in Canada. will see what happens, and give him a shout if I need parts. Regards Robert

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