ARB compressor relay getting too hot
Submitted: Thursday, Jul 07, 2011 at 15:34
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We’ve got an ARB CKMA12 compressor fitted in our 2006 Landcruiser and from the time we bought it in 2007 it hasn’t been the best. Whenever we use it to inflate the tyres it will stop after a bit of constant use – it will stop before four tyres are topped up from 28lb to 38lb pressure.
At first ARB thought it was a dodgy solenoid and we replaced that a couple of times. Then we were told it might be due to low voltage so we only use it now with the engine running. Last weekend I used it to inflate two of our caravan tyres and it stopped half way through the second one.
After it stopped I accidently touched the 40A relay that came with the compressor and it was red hot. You couldn’t hold it for more than a second. The wires coming to the relay were pretty warm as
well.
The compressor is mounted in the back of the Cruiser and is fed directly from the batteries with a 6B&S cable. The only other wire in the system is the stuff that came with the compressor and that goes through a 40A maxi fuse.
So now I’m thinking that maybe the relay or the supplied wiring is stopping the compressor.
Has anyone else had this problem?
Regards
John
Reply By: Robin Miller - Thursday, Jul 07, 2011 at 16:02
Thursday, Jul 07, 2011 at 16:02
A common problem is bad connection causing heat
John - same as the first thing to do if your battery doesn't turn the starter is to feel the battery terminal posts.
If hot bad connection caused by high resistance.
Clean can help , but it may be internal contact in your relay.
Try new relay , or if you don't mind playing with wires a bit , bypass the connection to
test.
AnswerID:
459367
Reply By: Wayne's 60 - Friday, Jul 08, 2011 at 02:29
Friday, Jul 08, 2011 at 02:29
Greetings
John,
In short ................... no, we do not have that type of problem with our ARB CKMA12 compressor.
It would appear, from the
information in your post, that the purchased product does not meet the basic criteria under which it was sold.
With respect, I would suggest that you ask ARB for a replacement unit, for comparison with your current unit, so that this matter can be finalised.
Please let us know the final outcome.
Cheers,
Wayne & Sally.
AnswerID:
459403