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Question on Cummins water pump

Posted By: KillerBee

Question on Cummins water pump - 03/10/13 01:53 AM

My 04 diesel Ram developed an intermitted squeal recently that has progressively turned into to a constant noise.

I removed the serpentine belt and did some investigating today.

About 4 months ago I noticed my waterpump had a slight leak so with winter coming I decided to replaced the water pump, the pulley on the tensioner, the top idler pulley, the serpentine belt and coolant.

Everything ran and sounded good until recently.

When I pulled the belt today all the pulleys were tight and spun great....alternator, power steering, fan bearing, and AC compressor.
I pulled the tensioner and everything also looked and felt great.
The belt looked great and showed no signs of abnormal wear.
I'm fairly confident there isn't a problem with any of these items.

The water pump turned but had a slight resistance and made a very faint squeking noise, nothing grinding or wobbly, kinda sounded like a tight rubber O ring.
When spun the pump didn't spin continuously, maybe 1/8 turn.
The rest of the pulleys would spin multiple revolutions.

I cleaned up the belt and put everything together and took it for a 5 mile run and everything stayed quiet.

So for the Cunmmins diesel experts how free and how long should the water pump turn when spun?

The truck runs cool and has no cooling issues.
The pumps are easy to replace but I would rather not mess with it if the resistance and lack of spinning is normal.

Thanks.
Posted By: NITROUSN

Re: Question on Cummins water pump - 03/10/13 03:37 AM

Thats normal for a water pump.
Posted By: Lugnutz

Re: Question on Cummins water pump - 03/10/13 06:30 PM

Had the same issue with trying to find that annoying squeak that got worse. Changed my water pump assuming it was going out only to find it was the air conditioning compressor. Mine is a second gen, don't know if that matters.
Posted By: pinkduster

Re: Question on Cummins water pump - 03/10/13 06:37 PM

Quote:

The pumps are easy to replace




By far, the easiest water pump replacement I've ever done on any of my vehicles.
Posted By: KillerBee

Re: Question on Cummins water pump - 03/10/13 07:40 PM

Quote:

Quote:

The pumps are easy to replace




By far, the easiest water pump replacement I've ever done on any of my vehicles.





The water pumps are a piece of cake.

The only issue I had the last time was the plastic drain valve in the radiator.
They are known to be problematic and even though I'm VERY careful with it the last time it was difficult to get it to catch when trying to screw it in.

Drove the truck today with no issues or squealing.

I know the the belt sometimes can get a glaze build up on it.
The new belt I put on was a green Gates HD and it did look a little slick with some buildup on the backside.

I put the old factory belt back on for now to see if the noise comes back or not.
I'll clean and degrease the Gates and put it back on later as I have a feeling that is the cause of my noise.

Attached picture 7620619-vbelt.JPG
Posted By: J_BODY

Re: Question on Cummins water pump - 03/16/13 12:19 AM

hit the belt with a wire brush while running.....just be carefull!
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