Powermaster Pump Motor

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Quigs

Trained monkey
Joined
Aug 3, 2004
Messages
106
I just finished rebuilding my master cylinder last night around 2:00 and now I was wondering if anyone has ever rebuild the motor and if so if they have any tips
 
The motor is not rebuildable. But if you do a search, one of the board members owns the original tooling and parts to supply members with a new motor. Last name is Terry. But before you consider a new motor, you should probably do a pressure check of the system.
 
pump motor is either jammed or shot. Because we even tried hard wiring it. But nothing worked it sounded like it wanted to go but didn't. Kind of a donk and that was it.
 
See if THIS LINK will help you out. Maybe you can answer this for me (since I haven't researched). By any chance, can that stinkin' motor be replaced without removing the master cylinder?
 
Yes the motor can be removed without removing the master cylinder but first you may want to remove the break lines from the master cylinder and I found it to be easier to remove the nuts from the bottom side of the car.

Thats alright. I don't belive I need one any more. Earlier today I took the motor off and was checking things over and I realised that the connections on the relay were all gunked up. After I cleaned the connections with some thin cardboard, then I hard wired the motor again and it ran. Ha they said it is not for do it yourselfers its not that hard.:cool:
 
Quigs...thanks for that input. At this point I'm suspecting a similar problem. Over a period of time, after mine sits for a week when I first turn on the ignition switch, motor runs for maybe 6-10 seconds, then (occasionally) it will "chatter", stop, start again very briefly and finally shut off. This week I turn the switch on and see the solid brake light and not a sound from the pump motor. Checked the fuse (good). Put another accumulator on just for fun. Nothing changed. After a couple checks with a test light (and the frustration level slowly rising :D ) I went to the high-tech "tapping the motor" procedure and the motor started right up, sounded a bit lazy for 1-2 seconds, ran for a normal amount of time and shut off. Zero problems during "cautious" test drive.
Here's the question...can you tell me more about your "connection-cleaning" and did you also check and/or clean the contacts on the relay, etc.? Obviously, I'd rather not remove the motor until I've exhausted other possibilities. TIA
 
Well I first took off the motor and took the little plastic cover off and then I took a thin piece of cardboard from a box of nails and rubbed it against the side of the relay over and over again with new pieces of cardboard until all the gunk was off.
 
Ok...so you were referring to the relay contacts all along. Thanks for that...I'm thinking my odds are pretty good. Appreciate...
 
:( things aren't going so well any more when I hooked my motor back up I did hear it run or at least it didn't run very well. So I started removing the line to the master cylinder from the motor. And turned the key to the on position. it only leaked out when it should have sprayed. Now I am just going to call around and find a motor. My cousin told me that the 86 87 caprice wagon has the same brake system.
 
Well I checked at autozone and they only wanted $347 for a motor but I might be able to find a motor in a junkyard. But it is ok because I am running out of time to drive it this summer because I started college today so that may get in the way of my Grand National time.
 
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