Type of Grease used in window regulator motors?

[SJ]

Don,

I'm planning to do a future write up for the Qlist on regulator motor and
regulator reconditioning. Photos also.

This is what I recall on taking the motor apart.

The brushes dont wear out . . .unless you have small kids running  the
windows up and down for 5 years.

No bearings used. Sleeve bushings used.

Once the motor is removed from the regulator assembly, you will see that the
working end insides are enacapsulated in silicone rubber.

Slowly remove the rubber in one piece. Use exacto knife to free the two
wires.

Lube the wire so you can pull it thru the Silicone rubber.

Push the wires thru to seperate the connector/wires from the brush holder.
Small screwdrivers, long nose needle pliers . . .patience.

Remove the brush springs using tweezers and small screwdriver. Otherwise you
will lose them in the next step.

The brush holder assy is made of plastic. It just sits inside the motor
casing. Use a little WD-40 around the perimeter so it soaks in between the
casing and the plastic.
Using small screwdrivers - eyeglass type , you can work out he plastic brush
holder.
Note: on my next regulator rehab, I will drill holes on side of casing
adjacent to the plastic brush holder . . .and use these holes to work on the
plastic to ease it out.
Later at reassembly you can cover the holes with tape or silicone rubber to
seal.

With brush holder removed, you can now remove the rotor. It will stick to
the magnets inside. Sometimes, the rotor is frozen to magnets with rust.
Gentle tapping and soaking with penetrant will free it eventually.

After removing the rotor, clean the rotor laminations to remove all
rust(file it clean).
Remove any rust with fine sandpaper from the surface of magnets inside the
caseing.
Blow out dirt/dust with air gun.

Also lightly sand the inside of the motor casing to remove oxidation so you
can later slide the brush holder in easily. I also coat the surface lightly
with Sil-Glyde(napa #765-1351). You may also want to give a very light coat

on the magnets to prevent rust formation.

Test fit the rotor, it should spin with clearance . . . . you have to fight
the magnets. Remove the rotor.

Clean shaft bearing surface and internal case bushing with very fine
sandpaper(wet and dry).

Lightly sand commutator copper. Then using jewelers screwdriver, make a
couple passes in the commutator grooves to clean them out. Lightly sand
again to get rid of any bumps caused by screwdriver. Blow clean with air
gun.

Clean rotor lamination surfaces with alcholol.

Tape rotor commutator and shafts with masking tape.

Spray lightly the commutator laminations with shellac(readily available in
Home Depot or any paint store).  Use several light coats. This will seal the
steel and prevent rusting. I hope it will. Let dry overnight.

Lube the casing sleeve bearing surface and the rotor shafts with grease (I'm
still working on the type of grease to use - been using auto bearing
grease). Also put a bunch of grease under the casing bearing . . .the shaft
end sits on the casing in there. Might as well keep that lubed.

Reassemble.
rotor in
brush holder in
brush springs in
carefully work the wires thru the silicone
place silicone cover into place . . .you may have to do some trimming with
exacto blade.

Lube regulator bushing. Position motor in regulator.

connect battery to motor and test it both ways, forward and backwards.

I'm working on the type of grease to use inside the gearing of the regulator
and on the cables. White lithium with teflon seems a good bet. I'm looking
for sources right now. Try www.mscdirect.com. Search for grease. The local
auto parts stores do not seem to carry white lithium in a 1 pound can. I may
have to order some.

Let me know how you make out.

SJ
85 4k - - sold but still on the road
88 5kq
90 100q



> Date: Mon, 04 Nov 2002 21:07:47 -0500
> From: Donald Lamond <dlam119 at bellsouth.net>
> Reply-To: dlam119 at bellsouth.net
> To: SJ <syljay at optonline.net>
> Cc: quattro at audifans.com
> Subject: Re: Type of Grease used in window regulator motors?
>
> Hi SJ:
>  Do you have a source for the brushes and bearings inside the window
> regulator motors?
>
> What's you proceedure for taking the motor apart?
>
> I tried getting one apart and ended up busting everything.
>
> Any tricks?
>
> Thankyou,
> Donald
> 84 4Ks