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The starter on my hunter has been acting up for a while so I decided to refurb it  It's now back together but there's still dead patches where it won't start  if I turn the shaft slightly it starts fine  Am I missing something obvious?? The page below has some useful fault finding info  easyautodiagnostics.com/misc-index/starter-motor-on-car-tests-1Pics will follow soon for the benefit of folk wanted to know what's inside a pre_engaed starter but have more sense than to take one apart  |
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Dead segments in the comm at a guess? I think you may be able to repair it.
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Jul 10, 2016 17:55:58 GMT
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^ Thanks for the suggestion  I ended up taking 2 starters apart, both have burn sections on the comm  The brushes are paired opposite each other so if one fails the opposite one should still work. On mine, I have dirty contacts directly opposite each other so both fail I tried cleaning them gently but they soon burn again. Speedy spares list new brushes at under a fiver a set so that will be the next "fix-it" attempt . Pics for info / as promised / "why not?" etc. Inertia starter motor.
The teeth shoot along the shaft when it spins to engage with the flywheel.  Close-up of the burnt section .  Pre-engaged starter motor. Very similar to above but the piggy-back solenoid pulls the gear to mesh with the flywheel  Exploded view of the solenoid & lever system .  Never a dull day! |
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hohocc
Part of things
Posts: 36 
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Jul 10, 2016 19:49:17 GMT
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Is that pre-engaged starter for a hunter? If so do you have any part numbers/where it was used type info?
Thanks!
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93fxdl
Posted a lot
Enter your message here...
Posts: 2,010
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Jul 10, 2016 23:10:05 GMT
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If a particular pair of segments keep burning, it sounds like they are lower than the adjoining segments, to refresh the motor properly you will need to skim the contact surface on a lathe, then slightly undercut the insulation between segments and finish with the new brushes, making sure they move freely in their holders.
Ttfn Glenn
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Last Edit: Jul 10, 2016 23:15:39 GMT by 93fxdl
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Jul 11, 2016 18:39:46 GMT
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^ Thanks Glenn. It's good to know the correct way - even though I'm trying to refurb it without a lathe. I can't see any difference on the problem segment so I'm hoping new brushes will be enough to fix it. Is that pre-engaged starter for a hunter? If so do you have any part numbers/where it was used type info? Hi, My workshop manual list a few different Lucas starter motors, shame that the starter on mine has a 5-pointed Chrysler logo cast in it so something different Look for a part number stamped into the body of the motor to identify Lucas units.     My Chrysler unit  More info in the Hunter album s252.photobucket.com/user/Nomad_Geordie/slideshow/1972%20Hillman%20Hunter%20Estate |
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hohocc
Part of things
Posts: 36
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Thanks for the info, I've got a factory workshop manual but the electrical section is missing so those page shots are very helpful!
I've got a 1972 Hunter saloon down here in New Zealand, needs some work but I'm the second owner (Mum was the first). Very keen to get a better starter on it than the old inertia engaged type.
Cheers!
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Jul 17, 2016 20:10:10 GMT
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Another public service announcement for Hunter owners! Useful dimensions for anyone looking to replace a Hunter starter  New brushed fitted - note length compared to the worn originals. For best results, use a gas powered soldering iron or plumbers blowtorch  Shame the problem was the rotating commutator so the new brushes didn't help Nice - NEW! - motor  (not cheap tho' )  |
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Jul 17, 2016 21:42:43 GMT
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Bit late but if you know anybody handy with a lathe you could probably skim that old comm up and make it useable again
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Jul 17, 2016 23:37:12 GMT
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^ I tried that after I found the new brushes didn't fix it. The local auto-electrician had a look and said it couldn't be skimmed again Not sure if that means it had been skimmed before and was now past it, or if my attempts had been the final straw  It hurts but sometimes I've just got to admit defeat Thanks to everyone for the suggestions! |
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if I turn the shaft slightly it starts fine 
(not cheap tho' 