Gearbox Solenoid Repair - Page 2

FrenchMike · 8th February 2015, 18:28

Yes ,the insulation test has to be done unless in that case one end is the earth.

SD1too · 8th February 2015, 18:32

Quote:

Originally Posted by klarzy

What resistance should I see if I where to put a MEGOHMETER across the coil and test it...

The DC resistance of the solenoids is posted regularly Pete, and I seem to recall that it's in kilohms, so if you use a megohm range the readings will be smaller by three decimal places.

Quote:

... it puts a high voltage low ampage pulse through the coil and if the coil is broken the reading will deviate from the expected range...

If the coil is broken it will be open circuit and the reading will be infinite. All you need for that is a standard multimeter costing £5 from e-bay.

Simon

pm77 · 8th February 2015, 19:33

Quote:

Originally Posted by FrenchMike

Yes ,the insulation test has to be done unless in that case one end is the earth.

Unless the insulation had broken down to earth, but a thorough test should still show this. Core to core, core to earth (and depends on how many cores and how many tests your willing to do). Hmm 64 star quad cable, that's me for 2 days

Anon3 · 8th February 2015, 20:25

The DC resistance is 14 to 18 ohms.
Or 0.000014 to 0.000018 Mohms.

SD1too · 8th February 2015, 21:52

Quote:

Originally Posted by Anon3

The DC resistance is 14 to 18 ohms.
Or 0.000014 to 0.000018 Mohms.

Thanks Steve!

Simon

RN3212 · 8th February 2015, 22:35

I might have a go at the solenoid that came out of my gearbox and if it's repairable I'll have a spare

Sonic ZS · 3rd October 2015, 13:48

Just a quick update on this one. Unfortunately, my repair didn't last long (not covered 500 miles since) and I've just had to replace the repaired solenoid due to the same fault reoccuring. Bought the new unit from JPAT near Bristol - excellent service & price, thanks guys.

With the benefit of hindsight, I'd say it's probably a safer bet to replace with new, rather than spend time & effort on removing and repairing the old solenoid. However, it was a Sunday and at least I now know what goes on inside !!

The new one was £43 inc VAT, so not worth all the bother of having to strip it all down a second time, JPAT keep them in stock - apparently it's a very popular part...

2015-10-03 11.00.26.jpg

8th February 2015, 18:28	#11
FrenchMike This is my second home Rover 75 Saloon Join Date: Aug 2007 Location: Avignon Posts: 4,466 Thanks: 94 Thanked 661 Times in 554 Posts	Yes ,the insulation test has to be done unless in that case one end is the earth. Last edited by FrenchMike; 8th February 2015 at 18:32..

8th February 2015, 20:25	#14
Anon3 Posted a thing or two Rover 75 Join Date: Mar 2014 Location: Birmingham Posts: 1,392 Thanks: 199 Thanked 219 Times in 187 Posts	The DC resistance is 14 to 18 ohms. Or 0.000014 to 0.000018 Mohms. __________________ [SIGPIC][/SIGPIC] Villa, Stella, Balti. It's Brummie latin that means, er...... Vis tester available to local V6 owners Last edited by Anon3; 8th February 2015 at 20:28..

8th February 2015, 22:35	#16
RN3212 Gets stuck in Rover 75 Classic SE 2.0V6 Auto Moonstone Green Join Date: Sep 2008 Location: Roscommon Posts: 839 Thanks: 315 Thanked 46 Times in 34 Posts	I might have a go at the solenoid that came out of my gearbox and if it's repairable I'll have a spare __________________ [SIGPIC][/SIGPIC]

3rd October 2015, 13:48	#17
Sonic ZS Posted a thing or two 75 Conn CDT Tourer, 75 Conn SE V6, 75 Conn V6, 75 Conn CDTi Tourer, ZS 180 Join Date: Jan 2014 Location: Devon Posts: 1,986 Thanks: 1,287 Thanked 963 Times in 534 Posts	Just a quick update on this one. Unfortunately, my repair didn't last long (not covered 500 miles since) and I've just had to replace the repaired solenoid due to the same fault reoccuring. Bought the new unit from JPAT near Bristol - excellent service & price, thanks guys. With the benefit of hindsight, I'd say it's probably a safer bet to replace with new, rather than spend time & effort on removing and repairing the old solenoid. However, it was a Sunday and at least I now know what goes on inside !! The new one was £43 inc VAT, so not worth all the bother of having to strip it all down a second time, JPAT keep them in stock - apparently it's a very popular part... 2015-10-03 11.00.26.jpg __________________