72cutlass408

The water pump is not leaking. But I am replacing all the hoses and the radiator should I replace the water pump ?

72cutlass408

72cutlass408

Should I replace it with like new or quit messing around and get a new one.

Fun71

I wouldn't mess with it.

droldsmorland

Grab the fan and pull up and down. See any deflection, replace it. Tight, leave it alone.
Careful to not misdiagnose a loose clutch fan for a loose water pump shaft... if you have a clutch fan.

I have witnessed several times where a pump doesn't leak because the system pressure was low due to a bad cap not maintaining pressure. After servicing the hoses like you are and replacing the cap the pumps leaked. You could also do a coolant system pressure test and find the weak link that way as well. Save you some time and frustration.

Do a good flush on the system before removing the old hoses.
Flush the heater core by its self with the hoses disconnected from the engine...LOW garden hose pressure! Gently blow or suck (shop vac(not full suction on the heater core)) all raw water out o the entire system.
Use the premixed coolant or distilled H20 on the straight stuff. Never use raw city water.

Retighten hoses/belts after a couple 100 miles.

geowindow6768

....and then, after everything is back together, the heater core leaks.

72cutlass408

Does anyone have the water pump torque specs?

Vintage Chief

Water pump to front cover bolts...13 ft lbs. Water outlet to manifold bolts...20 ft lbs.

Vintage Chief

For your reference>>>>3

oldcutlass

If your going to do the water pump, your just a few bolts away from the timing chain. You maw change it if it has never been changed.