Author Topic: Fried battery (and possibly much more besides)...  (Read 1339 times)

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midvillesb

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Fried battery (and possibly much more besides)...
« on: June 26, 2011, 11:55:44 PM »
I've been an idiot and think I may have fried my battery and starter motor/switch.

Finally got a bit of time this afternoon to do an oil change, clean out the centrifugal filter, replace the perished engine mount rubbers and spring and replace the alternator belt.  So far so good.

Anyway, I then try to start it, no noise or movement from the starter but lights out etc. when starter lever pulled.  Odd as the battery should be fully charged and the headlights etc. working fine.

Give it another couple of pulls, starter lever goes a bit slack.  I get out and while I'm still pondering matters I hear grease sizzling on the battery terminals.  Whip off the earth but not before there's a pretty nasty burning smell coming from the engine.

The starter lever had obviously got jammed and the starter was drawing some hefty current even though it wasn't turning. 

A quick check of the engine earth strap revealed at least one of the starting issues - I hadn't put a washer behind (as well as on top of) the eye of the strap when I bolted it back on to the rear crossmember and it had got well chewed up as I'd tightened the nut, so a poor earth was probably the reason why it wouldn't start in the first place.

Question now is what damage has been done by the sticking starter switch.  Dare I give it another go (assuming that I can resurrect the battery with a charger)?  The starter lever has freed off again...

1982 aircooled by the way...

Cheers,

Mike

midvillesb

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Re: Fried battery (and possibly much more besides)...
« Reply #1 on: June 27, 2011, 11:11:22 PM »
Well, the battery charged overnight and seems fine but the starter circuit is completely dead - I reckon the burning smell was probably the switch as the cable seems OK but it was too late to have a good look underneath this evening. On the plus side, the rest of the electrics are fine and with a push from my long suffering wife, it fired up straight away and drives much tighter with the new rear engine mount rubbers and spring fitted. Just a shame I don't live on a hill...

There's a complete refurb starter motor and switch assembly on eBay at the moment for about 85 quid so may just bite the bullet and buy that.

ronb1967

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Re: Fried battery (and possibly much more besides)...
« Reply #2 on: June 27, 2011, 11:44:21 PM »
try putting a test light on the starter motor switch side if it lights up on cranking position u know lever switch ok and starter not/ also very brieflly try with a short piece if cable by touching the perminent live (thicker cable) on the starter to the thinner switched  live cable on the starter