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Open Roads Forum  >  Class A Motorhomes  >  Maintenance Issues & Tips

 > Squeaking From Motor

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BigDaddy1951

Leesburg, FL

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Posted: 05/15/21 07:13am Link  |  Quote  |  Print  |  Notify Moderator

I have a 2007 Winnebago Voyage on the W22 Workhorse frame with the 8.1 engine. For over a year now when I first crank up, I get a squeaking sound from the motor. I am sure it has to do with the belt system. It is worse when it is damp, as it is most days in Florida. Usually after a few miles it stops. Because of the tight space, and old age, I need advice on where to look first. I don’t want to be left by the road. By the way, the belt looks and feels good, so I am concerned it is a bearing. Thx in advance!

ArchHoagland

Clovis, CA, USA

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Posted: 05/15/21 08:05am Link  |  Quote  |  Print  |  Notify Moderator

Probably the idler bearing for your fan belt.

I've had two replaced in the past 95,000 miles.


2004 Monaco La Palma 36DBD
Workhorse W22 8.1 Gas Allison 1000, 7.1 mpg

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rgatijnet1

Florida

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Posted: 05/15/21 08:16am Link  |  Quote  |  Print  |  Notify Moderator

The serpentine belts will get "glazed" and tend to squeak from time to time. When the bearings go it is usually a noise that is continuous. You will use the longer of the TWO belts listed for the W22 chassis with the 8.1L engine. Since you will need to replace the belt, it is not a bad idea to replace both the idler pulley AND the tensionor pulley. This is not a really difficult job to do but it does need to be done from the top for the idler pulley and from the bottom for the tensionor and belt change. I've change the belt at the side of the road. Takes about 15 minutes to do. I would get a Gates belt instead of the cheaper Dayco belt. It will last longer.

opnspaces

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Posted: 05/15/21 09:05am Link  |  Quote  |  Print  |  Notify Moderator

Try with the engine off and cold dump a bunch of water over the belts. Then start the engine and see if the squeak is different or gone. If no change then look at the bearings.


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BigDaddy1951

Leesburg, FL

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Posted: 05/15/21 09:19am Link  |  Quote  |  Print  |  Notify Moderator

I looked at Advance online and they listed an Idler/Tensioner Pulley. Are there two? And if so are they different? The game is afoot as Sherlock says! Thx.

mfinnerty

Wentzville, Mo.

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Posted: 05/15/21 10:14am Link  |  Quote  |  Print  |  Notify Moderator

Two different parts.


Mike & Linda Finnerty with Finn & Rosco (Golden mix brothers)


rgatijnet1

Florida

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Posted: 05/15/21 12:10pm Link  |  Quote  |  Print  |  Notify Moderator

The idler is a fixed pulley at the top. The tensionor pullet is on a spring loaded bracket that you have to release to change the belt. As the name indicates, it keeps the tension on the belt. You use a 3/8" breaker bar in the tensionor bracket to release tension on the belt.

Horsedoc

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Posted: 05/15/21 01:20pm Link  |  Quote  |  Print  |  Notify Moderator

Just a personal observation. I have always considered belts as squealing. A squeal lasting more that a squeak (which is more of an instant)
Have had springs squeak, motor mounts squeak. Brakes and belts squeal.
The word squeak seems like something that happens very quickly

BigDaddy1951

Leesburg, FL

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Posted: 05/15/21 04:26pm Link  |  Quote  |  Print  |  Notify Moderator

I agree. The sound is more like a chirp, chirp. Doesn’t squeal like a slipping belt.

rgatijnet1

Florida

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Posted: 05/15/21 05:22pm Link  |  Quote  |  Print  |  Notify Moderator

The chirping sound occurs when your alternator kicks on and off, which causes additional drag on the belt. Alternators are not charging at their full capacity unless needed. When they start charging, the drag increases, which can cause a chirping sound. When you initially start your engine, it takes a lot from the batteries and they need to be topped off, hence the alternator kicks in. If you want to dig around underneath and on top of your engine, you can buy a can of belt dressing and thoroughly spray the belt all over and let it dry. Then start your engine and see if the noise goes away. Belt dressing is not a fix, but in some cases it does quiet a slipping belt for a short time.

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