'92 S-10 Blazer Heater Blower Motor Squeak

Old 01-26-07, 05:38 PM
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'92 S-10 Blazer Heater Blower Motor Squeak

When I suddenly had no heat (no blower) in my old rat snow plow, I checked the ground and made sure there was power going to the motor when switched on. Both were fine, so I removed the blower motor from a parts vehicle I have, and when it was installed, it started with that nasty screech that tells you it is also preparing to die in the near future. Here's my question, since the repair manual I have only describes removal/re-installation, but not repair:

Is there any way to lubricate the bushings at the end of the shaft to silence it? What would happen if I sprayed silicone lube into the mounting hole for the cooling tube in the motor?

Thanks guys-

Old 01-27-07, 09:53 AM
Join Date: May 2006
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I wouldn't do what you're describing Jim. You would have lube everywhere in there.

A lot of those blower bushings are oil impregnated and not really designed to be lubed later. However if it is a type that can be disassembled into three parts (center and end caps) that may get you to the bushings to lube them with a light paste grease.

Some aren't that easy, though. Since we're talking about just getting it to work better, you can do what I (being the cheap sort) have done a couple of times. Use a 1/16 bit or somewhat and start a hole about halfway through the end cap where the bushing would be. Drill from the upper half of the bashing case. Don't drill all the way through because you don't want filings in the bushing. Then punch the hole the rest of way with a center punch or nail. I would use a white lithium grease from a spray can to fill the bushing.

Then push as much paste grease into the hole as you can to seal it.

That will probably get you a few more winters out of it.

Hope this helps,


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