Water Pump Blades Bent Down

Post by **precopster** » 10 Feb 2017, 05:06

Turf it!! Find an open window for that before it ruins the head which it will eventually do. Get a good Aisin WP800 from IPD. To quote IPD "We sell a lot of these pumps and we've had zero warranty failures"

This problem looks like 20 valves on their way to the machine shop to be turfed (along with the crappy WP)

Post by **mecheng** » 10 Feb 2017, 13:27

Looks like its made from Chinesium, also known as pot metal. Either that or you are using some seriously bad coolant mixture. Do a flush and use distilled water and Volvo coolant.

Post by **rspi** » 10 Feb 2017, 13:37

dlrigopoulos wrote:bearing is solid no play, car is in so-cal no freezing

What does this statement mean?

Are you putting it back on the car?

Cars in SoCal do not use coolant?

Post by **precopster** » 10 Feb 2017, 16:30

Coolant contains slippery stuff which is good for water pumps and bearings. The water pumps were designed to be run with coolant.

Correction: the Aisin pump model is WPV800.

dlrigopoulos · Post by **dlrigopoulos** » 03 Mar 2017, 01:43

rspi wrote:
dlrigopoulos wrote:bearing is solid no play, car is in so-cal no freezing
What does this statement mean?

Are you putting it back on the car?

Cars in SoCal do not use coolant?

This was the old one, The new replacement pump the blades are parallel to the hosing. The center of the blades on the old one is the same as the new pump.
The bearing on the old one was fine felt as solid and smooth as the new one.

The car has coolant what I meant was it is not subjected to freezing temperatures in my Lo-cal in SoCal

as400jockey · Post by **as400jockey** » 30 Mar 2017, 08:20

I have the same situation. My 2001 V70 T5 had been sitting a couple months, after which several screaming bearings... One was the idler on the timing belt - totally locked up and then would finally start spinning, and screaming.

Also the water pump.

I removed the pump and saw the same thing - bent blades, blades digging into the housing. The housing was marked "volvo" so it was either the original, or a reman. I bought the car in 2005 with 85k, now 2017 with 160k. Had the timing belt done in 2010 and he did the tensioner, but not the water pump nor the idler previously mentioned...

I'm not feeling any play in the bearing, and it wasn't leaking... but the blades are definitely mashed downwards compared the the Rein replacement I just put in.

I would vote for too-diluted coolant and cold temps (I'm in Boston)?

But still a head-scratcher...

The impeller blades on the new one were parallel to the housing, square and flat. These look like somebody smashed them with a hammer - look at the curvature in the blades...

Post by **precopster** » 02 Apr 2017, 05:50

A pic below and above of a brand new Aisin WPV-803 from an S80; essentially the same pump with a deeper pulley as your XC70 water pump. Do those "bent" blades look familiar? This is how good water pumps that last 2 to timing belt changes look. Forget the rest. They will only bend valves.

I have a GMB water pump for an S80 in stock and they're also of the "bent" design. Perhaps GMB are not the best water pump but at least they tried to copy the OEM design the best they could.

Your pump has severe bearing issues and that is all. It happens to all pumps eventually.

Water Pump Blades Bent Down

Re: Water Pump Blades Bent Down