How do you attach an alternator to a pulley?

How do you attach an alternator to a pulley?

You will also notice a rubber belt attached to the pulley and alternator. Take an appropriate size wrench or socket and loosen the tension on the belt. Then remove the alternator belt from the pulley and alternator. Locate the bolts or nut that hold the pulley in place and attach it to the alternator.

When do alternator decoupler pulleys need to be replaced?

Many vehicles today are equipped with an Alternator Decoupler Pulley to keep the serpentine belt running smoothly. They are a relatively maintenance free item but do, occasionally, need replacement especially when the alternator is replaced.

How to change or replace the over-running alternator?

We’ve seen many who have their accessory belt and tensioner replaced — thinking the VW belt has a broken cord or that the VW tenisoner spring was weak. But actually the VW over-running alternator was beginning to fail and was the cause of their VW’s accessory belt system problem. Loading…

What happens if you watch an alternator pulley video?

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What kind of alternator does a 2004 Chevy Silverado have?

I am trying to order an engine belt, tension pulley & idler pulley from RockAuto.com for my 2004 Silverado, extended cab Z71 offroad with 5300 engine. It has two listings for the parts, one for a 105 Amp alternator & different parts for a 145 Amp.

Do you need to remove serpentine belt to change alternator?

As you loosen the bolts, the alternator will slide in the bracket under the tension of the belt. You may not need to remove the serpentine or accessory belt if it’s not damaged.

What can I use to relieve tension on alternator belt?

Relieve tension on the belt with the auto-tensioner (if equipped). Some vehicles use the alternator itself to apply tension to the serpentine or accessory belt, but others use an auto tensioner pulley.

How do you replace a / C belt tensioner on a Chevy Silverado?

Rotate the tensioner clockwise against the spring, and hold it. Then slip the belt off the tensioner pulley. Release the tensioner slowly back to the spring stop. Slip the belt off the crank pulley and let it hang. Figure 4. Accessory drive belt removal. Examine the belt for cracked ribs or fraying, and consider replacing it.

What happens when you loosen the tensioner pulley?

Loosening the tensioner pulley is accomplished by pulling it in a direction that gives slack to the serpentine belt. This action enables the belt to be removed and for replacement or repair of motor parts.

How do you loosen a belt tensioner on a car?

Also, some vehicles require a star-shaped Torx bit to loosen the belt tensioner. While the pulley is being pulled forward, slide the serpentine belt off of any pulley it is connected to. Release the pressure from the belt tensioner pulley by removing the tool. Inspect the pulley and belt while they are apart.

What kind of Ratchet do you need for a tensioner pulley?

Most tensioner pulleys require a standard ratchet for loosening. Find the serpentine belt information sticker on the vehicle. This sticker will show the routing path and size of the serpentine belt. Sometimes these stickers also indicate what size socket or ratchet end is required to loosen the belt tensioner pulley.

Can a manual tensioner be used to replace an alternator?

The belt tensioner will only travel (swing) so far which can make installing the belt difficult. Never pry or force the belt onto the pulley. Vehicles with a manual tensioner or the belt tightens with the alternator, there should about ½ inch of deflection in the belt between the pulleys with the greatest distance between them. 7

When do you need to loosen a tensioner pulley?

Sometimes, maintenance or repair will require tightening or loosening a tensioner pulley. Replacing a drive belt or timing belt, for example, would require you to loosen a tensioner pulley to make room for the new belt, as the new belt is smaller than the worn drive belt.

What should be the deflection between the drive belt and alternator?

Vehicles with a manual tensioner or the belt tightens with the alternator, there should about ½ inch of deflection in the belt between the pulleys with the greatest distance between them. Once the alternator, drive belt, and electrical connections are reinstalled, scan the work area and make sure nothing has been overlooked.

What should be the deflection between the belt and the pulley?

Never pry or force the belt onto the pulley. Vehicles with a manual tensioner or the belt tightens with the alternator, there should about ½ inch of deflection in the belt between the pulleys with the greatest distance between them.