So im attempting changing the water pump on my GMC5.3 and i got this info from Chiltons online,

"Install or connect the following:

Water pump. Install the water pump bolts. Tighten the water pump bolts first pass to 11 ft. lbs. (15 Nm); tighten the bolts final pass to 22 ft. lbs. (30 Nm).

Water pump drive belt pulley and bolts (if applicable). Tighten the pulley bolts first pass to 89 inch lbs. (10 Nm); tighten the bolts final pass to 18 ft. lbs. (25 Nm). "



My question is, what tool do i need to get to measure the ft . lbs. mentioned, or is that completely necessary. Thanks for any help, hopefully the question wont be to embarrassing

 

They don't have to be torqued just tighten them up really good by hand with a 10mm socket and ratchet. I've never torqued water pump bolts lol

 

Laugh if you must, i just wanna make sure i get this done right, anything special go on the threads when i install the new one?

 

dry should be fine you could put some med grade lock tite... not the red permanent....

 

You would use a torque wrench.



They're very useful tools, one that should be in every ones tool boxes. Is is absolutely necessary for this job? No, and I haven't used one when changing a water pump ever. But I have used one for many other things in an engine. They can be had for as cheap as $20, and functions very similarly to a regular ratcheting wrench.

 

Thanks for taking me by the hand lol, do i have to replace the fan clutch also? Truck has about 150,000 on it

 

Torque wrench is what you need...I have never used one on waterpumps, but you can get a $20 walmart cheapo or a $400 snap-on that nearly does your laundry....I prefer the German torque wrench version, goodentight.

 

Your fan clutch is probably fine. As long as you're not having problems with it, I would leave it as is.