MG-Cars.net

Welcome to our resource for MG Car Information.

Recommendations

Parts

MG parts spares and accessories are available for MG T Series (TA, MG TB, MG TC, MG TD, MG TF), Magnette, MGA, Twin cam, MGB, MGBGT, MGC, MGC GT, MG Midget, Sprite and other MG models from British car spares company LBCarCo.

MG MGF Technical - whining wiper motor

The title pretty much sums it up.

Does a whining wiper motor mean it's on the way out...?

Tim
tim woolcott

Tim, probably. Some cars seem prone to ingress of water which causes corrosion and general gumming up of the works. Ours went that way too. New motor is # GNU7843 and is around 100. Easy to fit yourself with average capability....
David

Yes. Noise indicates that a failure is pretty likely. You could remove the end of the motor and empty the water (which will almost certainly be there!).

Try one of the breakers! I bought a new motor from Midland MGF at an appreciable saving (they had several)

You can also get a Mk2 motor, which I'm led to believe (I can hope!) has better seals - however, you'll need to cut the plug off both new and old motors and join the old plug to the new motor if you have a Mk1 car.

A bit fiddly to fit, probably about an hour (I didn't look at the clock!). You take the whole wiper mechanism out and the then unbolt/change the motor. You can also "separate" the mechanism at the ball joints to ease removal.

Neil.
Neil

Neil.

Nice bit of advice.

Re: Midland MGF - already sent an email off. How much did up pay....?

Tim
tim woolcott

Hi Tim,

Below is my contribution to aprevious thread. Note the part about removing the motor casing and drilling a hole in it.

"I had problems with my wiper motor. Took all the motor assembly with linkage out as per the book, except I had to loosen the clutch master cylinder from the bulkhead and push it out of the way. No need to remove pipes.

I found that the motor was full of water and the corrosion was pretty bad. The motor casing comes off easily and could be done in situ without removing the linkage etc. The corrosion had also attacked the wiring inside. I mended the broken wire with a soldering iron and cleaned out the crud from inside the casing using a piece of plasticine to pick up all the rust stuck to the magnets.

Then drilled a small hole in the bottom of the casing ie the lowest point of the casing when mounted in the car, so that any more water that gets in can drain out again. To top that I then filled in the aperture in the body work just above the wiper motor so that no rain falls on the motor anyway!"

cheers

Bruce
Bruce Caldwell

Bruce,

Great tip.

Does this mean that your didn't have to replace the wiper motor...?

Tim
tim woolcott

Tim, I cleaned mine in Bruce-style, and it still made such a racket I replaced it anyway...
David

Tim,

No, I didn't replace mine but it wasn't making a noise. It had just stopped all together. It was full of water though.

Bruce
Bruce Caldwell

Hi,
I had the whining wiper motor as well... after an idiot in a workshop forgot to put back the black plastic cowl in the bonnet. The car stood then in the rain for three weeks.

Mine as well didn't get silent after the mentioned 'Bruce operation'. I think the water and rust went already up into the gear bearing.
http://www.mgfcar.de/wiper/index.htm

@ David,
>GNU7843
please can you confirm it's the old design part number ?
There are two different. The change was for MY2000, IMO (different connector design)

Cheers
Dieter
Dieter K.

Dieter yes GNU7843 is the early one - remember they had finished Amaranth by MY2000 :-)
David

Dieter,

is it possible to replace the old style wiper motor MK1 with the new style MK2 without replacing any of the other linkages....?

Tim
tim woolcott

??
http://www.mgfcar.de/wiper/index.htm
says IMO all. Mechanical linkage is the same.

Electric 'linkage' is different. Did that job, got no T-shirt, but a working silent wiper :)
Dieter K.

Yes, you can replace a Mk1 with a Mk2 - you just cut the plugs off both and put the Mk1 plug on to the Mk2 you're fitting. Mechnically, they're the same.

(I've done it! At the moment, I've got no high speed, so that lead must've come undone - I used snapblocks, which I suspect was a mistake: should have used crimp on spades!)

I too tried the drill a hole and dry out fix, and it didn't work for me either...

Midland: its better to phone them - I don't think they look their email terribly often; even better is to go up there (though you may end up buying things you hadn't realised you wanted :-) ). I think I paid 20 something pounds (25?) for the motor, but there was a bit of haggling with other things...

Neil.
Neil

Once you've got the new motor back in (and I found it really tricky) wrap it in a small black bin-liner. Keeps it dry and you can't see it from outside unless you look really closely.

I'm on my 3rd wiper motor.....

Hugh
Hugh

This thread was discussed between 02/10/2002 and 10/10/2002

MG MGF Technical index

This thread is from the archive. The Live MG MGF Technical BBS is active now.