Possible faulty waterpump in 4.5lt landcruiser 80s

Hi Fil,

I would check the idler pully, the bearings go in these.

I have a 1hz in a 1993 80 Series and have replaced this twice, I was able to knock the bearing out and get a replacement from bearing shop for about $3.50.
Toyota wanted about $65 for a new pulley.

hope this helps

David Will

Take the drive belts off one at a time and see when the noise disappears. It could be A/C compressor bearings, power steering pump etc.

When you have it narrowed down to one belt, spin each pulley that is driven by that belt and a "feel" will probably be all you need to confirm which one it is. The suspect pulley will give you a graunchy feel.

Then replace what ever is driven by that pulley.

Hi Bubbles.
The first step is to try and diagnose the problem, try and identify where exactly the noise is comming from.
To do this use a very long screwdriver as a stethescope, hold the handle to your ear and press the blade against the suspect parts.
As mentioned earlier it could be the water pump, idler pulley or alternator bearings.
If your 80 series hasn't already had a new water pump then it wouldn't hurt to replace it anyway (under $200 for genuine Toyota) Then while you have the belts off you can check the idler pulley and the alternator easilly.
While you are at it and while the coolant is out, for a few extra dollars you could fit a new thermostat and radiator cap.
All these parts are very easily replaced.

Regards Cruiser

Just grab the pully on the front of the pump and give it a wiggle. If is the pump you may have quite a bit of play.

All of the above,
but the air conditioner nose/pulley bearing is very common to fail, and more than likely chew out the housing meaning a new air con compressor.
slip of the air con belt and run it to test it.
if your going to change the water pump and pulley bearings and if the air con is ok but has a few klm on it change the nose bearing as it will save you heaps in the long run.

Rob.

why don,t you take the drive belt off and start it you will have plenty of time to find the noise before it gets hot
mechpete

Looks like it is the AC bearing. Did the water pump and fan clutch anyway while I was checking things out. Also both idler pulleys are a bit rough so I will change the bearings over on them when I get a chance to.

Anyone know the bearing number for the AC compressor?

Cheers

Fil


PS Aftermarket waterpump didn't come with the stubs so had go source them (Datsun 1600 exhaust studs!) and the fan clutch didn't centre on the waterpump so had to manually do it with a dial gauge...