pete3000 Posted October 29, 2011 Share Posted October 29, 2011 I posted a wanted a while back as my pump had stopped ticking, well I missed a few on the bay and didn't fancy the idea of £80-£150 for a new one. Being as the old one didn't work I thought I'd strip it. The coil was reading 180k ohms (open circuit or as good as), shold be 35 ohms So with a selection of spanners I started, stripped the two ends first, 17mm and 12mm on ally end recovering the fuel strainer. Then the other end 8mm recovering the washer spring and ball bearing (ball bearing in first) Couldn't see any more loose bits, so I noticed the case is rolled closed, holding it in the vise I started tapping the edge back gently with a centre punch and hammer which you can see in this shot. The whole lot looks like this when apart The most difficult bit is removing the coil which is pressed in loosely. I used a piece of wood and pushed the terminals in the vise again against the flared out pump body, wiggling the coil centre with a brass drift. be careful as it's plastic. Once it was out and the rubber shield was off I could see the copper wire had disintergrated by the terminals, green and salty mmmm nice. I unwound a turn from the post and resoldered, cleaning the flux off. measured 33-35 ohms now, nice. squeezed the top in the vise again to push the coil in and bits from inside, top into the body tapped the case all round until closed, put fitting back on. returned it to the van, and it works, no leaks and cheaper than £100+ Quote Link to comment Share on other sites More sharing options...
CwazyWabbit Posted October 29, 2011 Share Posted October 29, 2011 Now that's a nice fix I fixed an induction motor (off a bandsaw) the other day, that had a thermal fuse strapped to the windings which had blown. Does this have a thermal fuse as well? Quote Link to comment Share on other sites More sharing options...
pete3000 Posted October 29, 2011 Author Share Posted October 29, 2011 nope it's just an expensive solenoid, 12v or 24v coil. btw, just noticed from my 1st pic the greeny metal cap doesn't come out until you have uncrimped the body as per pic 3. as its held in under compression, and loosely push fitted into the coil. I only remembered to take photos once it was apart, otherwise it would have been a pointless post. pete Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted October 29, 2011 Share Posted October 29, 2011 Nice fix! Quote Link to comment Share on other sites More sharing options...
HPLP Posted October 29, 2011 Share Posted October 29, 2011 Thanks for sharing! H Quote Link to comment Share on other sites More sharing options...
reb78 Posted October 29, 2011 Share Posted October 29, 2011 Nice. Perhaps this should go in the tech archive? Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.