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Submitted By: v737d
Date: February 10, 2009, 09:28:40 AM
Views: 4574
Belt Replacement - Christopher D. Van Decar v737d
![]()
Photo 1
The bolts on my Air Pump and Power Steering Pump are either 9/16 or 15mm. The 9/16 did not quite fit and the 15mm seemed a little loose. I'm not sure if my 9/16 wrench was tweaked or my bolts were that bad. The 9/16 bolt on the alternator was a good fit.
You DO NOT need to remove any of the bolts in this procedure!
You will be much happier if you wait for the engine to cool down completely before starting this task to reduce the chance of inadvertent burns.
Before starting, open the hood and locate the power steering pump pulley. Just behind the pulley is the Power Steering Pump slide clamp bolt. If you are lucky the motor stopped with one of the large holes in the pulley wheel in front of the bolt. If it didn't, barely turn the motor over until they line up. An assistant would be a help here. (see photo 3)
CAUTION: KEEP ARMS, FINGERS, HAIR, CLOTHING etc CLEAR OF THE FAN AND BELTS WHILE YOU ARE DOING THIS!
Tools Needed:
Assistant or helper
Adult beverage of choice
Part Numbers: (Dayco Dynaflex, other brands should cross reference)
Air Conditioner / Alternator (two required on my truck): 15570
Air Pump: 15480
Power Steering Pump: 15445
NOTE PLEASE READ BEFORE BUYING YOUR BELTS!
Since the a/c alt pulleys require two belts they HAVE to be of equal length! Evidently belt companies used to sell matched sets but this is no longer the case. Call your auto supply store of choice and ask them if they have a belt-measuring device. This device allows you to quickly measure the circumference of the belt. If they have one, great, now ask how many of the belts they have in stock. It took me five different belts from two different stores to find two of equal length. Call before you hit the road. The other two belts will be o.k. as the slide adjustment will take care of any variations.
Remove your belts in this order; air pump, power steering and then a/c alt. Replace the belts in the opposite order.
1. Using your 9/16" (or 15mm) combo wrench loosen the Air Pump pivot bolt (see photo 2), do not remove!
![]()
Photo 2
2. Using the 9/16"(or 15mm) wrench or socket loosen the Air Pump slide clamp bolt just enough so you can push down on the pump body to slacken the belt. (see photo 2)
3. With the belt loose, thread the belt off of the pulley and around the fan to remove it. The best way to do this is to thread the belt over the fan blades one at a time. Do not discard the used belt.
4. Insert the 9/16" (or 15mm) socket through the Power Steering Pump Pulley and loosen (do not remove!) the Power Steering Pump clamp bolt. (see photo 3)
![]()
Photo 3
5. Crawl under your truck and find the Power Steering pivot bolt on the back of the pump housing (see photo 4) and using your 9/16" (or 15mm) loosen (do not remove!) the bolt.
![]()
Photo 4
6. Come out from underneath your truck and push down on the Power Steering Pump until the belt is slack enough to remove from the pulleys.
7. Using the same procedure in step 3, remove the belt. Do not discard the old belt.
8. Using your 9/16, loosen the Alternator pivot clamp bolt (do not remove!). (see photo 5)
![]()
Photo 5
9. Using your 1/2" wrench or socket, loosen (do not remove!) the Alternator slide clamp bolt. (see photo 5)
10. Push down on the Alternator to slacken the belts. Remove both belts as described in the step 3.
11. Take a moment now to inspect all of your pulleys for any damage, dirt etc. I found a small rock wedged into the pulley on my a/c compressor! If the pulleys are damaged you might be able to file down a small nick or gouge but if they are cracked they have to be replaced. This usually involves removing the component (alt, ps or a/c or water pump) and taking it to a machine shop or auto parts store to have a new pulley pressed onto the shaft.
12. Use the reverse of step 3 and thread the two Alternator drive belts over the fan and onto the pulleys (alternator, a/c, crank). Once the belts are on the pulleys sight down the belts and make sure they are straight and not on the wrong pulleys! The new belts are probably a bit shorter than the old ones (stretching, etc) so you may have to move the various components further down the adjustment slide in order to place the new belts onto the pulley.
13. Using one hand, grab underneath the alternator and pull up to take up the slack in the two belts. Using your other hand (with wrench!), tighten the alternator slide clamp bolt. Now use the T.L.A.R. method described in the intro to check the tightness of the belt. You may have to re-loosen the pivot bolt and pull up more. An extra set of hands works wonders when doing this!
14. Once the proper tightness of the belt is achieved, tighten the alternator pivot bolt and check the tightness of the clamp bolt.
15. Using the reverse procedure in step 3, thread the power steering belt onto the pulleys (Power steering pump, water pump, crank). Again sight down the belt to make sure it is straight and on the correct pulleys.
16. Insert the end of your 1/2" drive socket into the adjusting hole in the mounting bracket. Turn the socket driver handle the proper direction to take up the slack in the belt. Using your other hand (with wrench!) tighten the power steering pump slide clamp bolt. Use the T.L.A.R. method described in the intro to check the tightness of the belt. You may have to re-loosen the pivot bolt and pull up more. An extra set of hands works wonders when doing this!
17. Once the proper tightness of the belt is achieved, tighten the pivot bolt (from under the truck) and check the tightness of the clamp bolt.[/i]
18. Using the reverse procedure in step 3, thread the air pump belt onto the pulleys (air pump, water pump, crank). Sight along the belt to make sure it is straight and on the correct pulleys.
19. Insert the end of your 1/2" drive socket into the adjusting hole in the mounting bracket. Turn the socket driver handle the proper direction to take up the slack in the belt. Use your other hand (with a wrench in it!) to tighten the air pump slide clamp bolt. Now use the T.L.A.R. method described in the intro to check the tightness of the belt. You may have to re-loosen the pivot bolt and pull up more. An extra set of hands works wonders when doing this!
20. Once the proper tightness of the belt is achieved, tighten the pivot bolt (from under the truck) and check the tightness of the clamp bolt.
21. With all the belts installed, double check the entire engine bay to make sure you have removed all tools, rags, bottles, sunglasses etc. Start the engine and listen for any belt squeal (trust me you will know it when you hear it!). If there is no squeal, leave the engine running and FROM THE SIDE OF THE TRUCK look at the belts as they travel over the pulleys. Make sure they are traveling straight and are not "bouncing" or "vibrating" when traveling between the pulleys. If they are you will need to tighten the belt more.
One of my alternator / ac belts is just slightly longer than the other is, so it has the slightest "bounce" in it, but I can live with it.
22. Thump chest, bellow like Dag the Cro-Magnon and drink your adult beverage!
Date: February 10, 2009, 09:28:40 AM
Views: 4574
Belt Replacement - Christopher D. Van Decar v737d
Photo 1
The bolts on my Air Pump and Power Steering Pump are either 9/16 or 15mm. The 9/16 did not quite fit and the 15mm seemed a little loose. I'm not sure if my 9/16 wrench was tweaked or my bolts were that bad. The 9/16 bolt on the alternator was a good fit.
You DO NOT need to remove any of the bolts in this procedure!
You will be much happier if you wait for the engine to cool down completely before starting this task to reduce the chance of inadvertent burns.
Before starting, open the hood and locate the power steering pump pulley. Just behind the pulley is the Power Steering Pump slide clamp bolt. If you are lucky the motor stopped with one of the large holes in the pulley wheel in front of the bolt. If it didn't, barely turn the motor over until they line up. An assistant would be a help here. (see photo 3)
CAUTION: KEEP ARMS, FINGERS, HAIR, CLOTHING etc CLEAR OF THE FAN AND BELTS WHILE YOU ARE DOING THIS!
Tools Needed:
- 1/2" combo wrench
- 9/16" combo wrench
- 15mm combo wrench
- 1/2" socket and drive with small extension
- 9/16" socket
- 15mm socket
- 1/2" socket drive and extensions
Assistant or helper
Adult beverage of choice
Part Numbers: (Dayco Dynaflex, other brands should cross reference)
Air Conditioner / Alternator (two required on my truck): 15570
Air Pump: 15480
Power Steering Pump: 15445
NOTE PLEASE READ BEFORE BUYING YOUR BELTS!
Since the a/c alt pulleys require two belts they HAVE to be of equal length! Evidently belt companies used to sell matched sets but this is no longer the case. Call your auto supply store of choice and ask them if they have a belt-measuring device. This device allows you to quickly measure the circumference of the belt. If they have one, great, now ask how many of the belts they have in stock. It took me five different belts from two different stores to find two of equal length. Call before you hit the road. The other two belts will be o.k. as the slide adjustment will take care of any variations.
Remove your belts in this order; air pump, power steering and then a/c alt. Replace the belts in the opposite order.
1. Using your 9/16" (or 15mm) combo wrench loosen the Air Pump pivot bolt (see photo 2), do not remove!
Photo 2
2. Using the 9/16"(or 15mm) wrench or socket loosen the Air Pump slide clamp bolt just enough so you can push down on the pump body to slacken the belt. (see photo 2)
3. With the belt loose, thread the belt off of the pulley and around the fan to remove it. The best way to do this is to thread the belt over the fan blades one at a time. Do not discard the used belt.
4. Insert the 9/16" (or 15mm) socket through the Power Steering Pump Pulley and loosen (do not remove!) the Power Steering Pump clamp bolt. (see photo 3)
Photo 3
5. Crawl under your truck and find the Power Steering pivot bolt on the back of the pump housing (see photo 4) and using your 9/16" (or 15mm) loosen (do not remove!) the bolt.
Photo 4
6. Come out from underneath your truck and push down on the Power Steering Pump until the belt is slack enough to remove from the pulleys.
7. Using the same procedure in step 3, remove the belt. Do not discard the old belt.
8. Using your 9/16, loosen the Alternator pivot clamp bolt (do not remove!). (see photo 5)
Photo 5
9. Using your 1/2" wrench or socket, loosen (do not remove!) the Alternator slide clamp bolt. (see photo 5)
10. Push down on the Alternator to slacken the belts. Remove both belts as described in the step 3.
11. Take a moment now to inspect all of your pulleys for any damage, dirt etc. I found a small rock wedged into the pulley on my a/c compressor! If the pulleys are damaged you might be able to file down a small nick or gouge but if they are cracked they have to be replaced. This usually involves removing the component (alt, ps or a/c or water pump) and taking it to a machine shop or auto parts store to have a new pulley pressed onto the shaft.
12. Use the reverse of step 3 and thread the two Alternator drive belts over the fan and onto the pulleys (alternator, a/c, crank). Once the belts are on the pulleys sight down the belts and make sure they are straight and not on the wrong pulleys! The new belts are probably a bit shorter than the old ones (stretching, etc) so you may have to move the various components further down the adjustment slide in order to place the new belts onto the pulley.
13. Using one hand, grab underneath the alternator and pull up to take up the slack in the two belts. Using your other hand (with wrench!), tighten the alternator slide clamp bolt. Now use the T.L.A.R. method described in the intro to check the tightness of the belt. You may have to re-loosen the pivot bolt and pull up more. An extra set of hands works wonders when doing this!
14. Once the proper tightness of the belt is achieved, tighten the alternator pivot bolt and check the tightness of the clamp bolt.
15. Using the reverse procedure in step 3, thread the power steering belt onto the pulleys (Power steering pump, water pump, crank). Again sight down the belt to make sure it is straight and on the correct pulleys.
16. Insert the end of your 1/2" drive socket into the adjusting hole in the mounting bracket. Turn the socket driver handle the proper direction to take up the slack in the belt. Using your other hand (with wrench!) tighten the power steering pump slide clamp bolt. Use the T.L.A.R. method described in the intro to check the tightness of the belt. You may have to re-loosen the pivot bolt and pull up more. An extra set of hands works wonders when doing this!
17. Once the proper tightness of the belt is achieved, tighten the pivot bolt (from under the truck) and check the tightness of the clamp bolt.[/i]
18. Using the reverse procedure in step 3, thread the air pump belt onto the pulleys (air pump, water pump, crank). Sight along the belt to make sure it is straight and on the correct pulleys.
19. Insert the end of your 1/2" drive socket into the adjusting hole in the mounting bracket. Turn the socket driver handle the proper direction to take up the slack in the belt. Use your other hand (with a wrench in it!) to tighten the air pump slide clamp bolt. Now use the T.L.A.R. method described in the intro to check the tightness of the belt. You may have to re-loosen the pivot bolt and pull up more. An extra set of hands works wonders when doing this!
20. Once the proper tightness of the belt is achieved, tighten the pivot bolt (from under the truck) and check the tightness of the clamp bolt.
21. With all the belts installed, double check the entire engine bay to make sure you have removed all tools, rags, bottles, sunglasses etc. Start the engine and listen for any belt squeal (trust me you will know it when you hear it!). If there is no squeal, leave the engine running and FROM THE SIDE OF THE TRUCK look at the belts as they travel over the pulleys. Make sure they are traveling straight and are not "bouncing" or "vibrating" when traveling between the pulleys. If they are you will need to tighten the belt more.
One of my alternator / ac belts is just slightly longer than the other is, so it has the slightest "bounce" in it, but I can live with it.
22. Thump chest, bellow like Dag the Cro-Magnon and drink your adult beverage!
