Created on: 2017-10-03
How to repair, install, fix, change or replace a screeching, squeaking or worn engine idler pulley on 06 Chevy Silverado
15mm Socket
Ratchet
3/8 Inch Breaker Bar
Hi, I'm Mike from 1A Auto. We've been selling auto parts for over 30 years.
I'm using a 1/2" breaker bar with a 3/8 drive adapter. I'm going to put it in here, in the end of the auto belt tensioner. Pull it this way, pull the belt off, and let the tension go. Pull the belt off all the pulleys.
I'm going to remove this idler pulley with a 15 mm socket and ratchet.
When we reinstall our idler pulley, make sure all these components are here in the back, like this little bushing, because the bearing is going to ride on that. Make sure to thread that in by hand. It is going into aluminum, we don't want to cross thread it. We're just going to tighten it up. Once it feel like it's tight, I'll stop.
If you don't remember how the belt was routed on the engine, there should be a diagram under the hood. We're working on the V6, so we're going to use this diagram here. Put this this way, then up around the power steering pump, up and over the water pump, under the idler, over the crank pulley, up and over the alternator, then the A/C compressor, the power steering pump.
I need to flip this tensioner down. What I'm actually going to do is pop it off the alternator real quick and I can just hold it in place, grab the tensioner, pull it down, pop it back up onto the alternator. Make sure it's seated in the tensioner grooves. Let the tensioner out. The belt is seated in all the grooves. It's actually not lined up perfectly on the water pump pulley, so I want to just readjust it. So release some of the tension and I can slide it over. There, it's nice and straight and aligned now. Let the tension back out, and the belt is replaced.
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