[cowboyteddy]

I searched and read many posts but still didn't quite understand how to do this.

I have a '03 with 75000 miles and I am planing to change the P/S pump belt and the serpentine belt. I know for the P/S pump belt I have to re-tighten it after I put the new belt on, but how do I know how "tight" is good enough?

thanks in advance for your help.

-Ted

 

[William Wiles]

Apply a force of 22 lbf. deflection used belt .51-.65 inches, new beld .33-.43 inches. If new belt run engine for five minutes and then readjust to used belt specs.

 

[cowboyteddy]

Apply a force of 22 lbf. deflection used belt .51-.65 inches, new beld .33-.43 inches. If new belt run engine for five minutes and then readjust to used belt specs.

thanks for the quick reply. So it seems I need some sort of tool to exactly apply that 22 lbf of force? Also, when I adjust the tension by turning the adjustment nut (the one right behind the pulley), which way is to loose it? counter-clock-wise?

thanks1

 

[RolHammer]

If you have the service manual, check p17-12. After you've loosened the mounting nut and mounting bolt on the PS pump pulley, you have your choice of two methods:

1. Belt Tension Gauge Method
This requires either of the following special tools:
-belt tension gauge set 07JGG-001000A
-belt tension gauge 07JGG-001010A

Tension using this method is 390-540 N (40-55 kgf, 88-120 lbf) for a used belt or 740-880 N (75-90 kgf, 170-200 lbf) for a new belt.

2. Deflection Method
Apply a force of 98 N and measure the deflection between the powersteering pump and crankshaft pulleys. Deflection for a used belt is 13-16.5 mm (0.51-0.65 in) and 8.5-11 mm (0.33-0.43 in) for a new belt

The manual mentions Willam's advice of simply running the engine for 5 minutes and using the used belt specs though, which makes me wonder why bother even talking about new belt specs at all. But I digress...

The manual advises 'turn the adjusting nut to get the proper belt tension' but doesn't offer any information as to which direction tightens.

Which ever method above that you choose, the mounting nut and the mounting bolt will need to be retightened when you're done. Each has the same torque specs: 24 N.m (2.4 Kgf.m, 17 lbf.ft)

HTH

 

[cowboyteddy]

Thanks for the info. I have the manual but wasn't sure if there's any simple way to measure the required adjustment without a dedicated tool. But I found this tension gauge for about $20 Gates Belt Tension Tester so I'll order it.