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Old 10-06-2022, 08:14 PM   #1
Join Date: Jan 2018
Location: El Dorado Hills, California
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2022 Dutch Star Freightliner Belt Problem

After getting home from picking up our 2022 DSDP 3736 (2,812 miles), I noticed a loud "chirping" noise coming from the engine compartment, much louder when cold. I took it to Sacramento Truck Center where they replaced the fan drive belt, and the noise went away. At 4,548 miles the chirping was back and I took it in again. This time they replaced the idler pully, checked alignment and installed a new belt. Now at 7,500 miles the chirp is back and I took it back in. Service Center says they contacted Freightliner, and they are trying to figure out how to fix it, but at this time it is okay to drive it and there should be no failure.

So, after 3 visits no fix. The noise is loud enough that you can hear it in the drivers seat at idle with the door open.

Anyone else have a similar problem? Fix?
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Old 10-06-2022, 08:51 PM   #2
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2022 Dutch Star Freightliner Belt Problem

If you can easily and safely access the belt with it running (side radiator) I would first try spraying a mixture of slightly soapy water on it while its running. (AC off) This may clean it enough to quiet it down for a while. There are also many brands of belt dressings out there.
Until Freightliner comes up with a fix, I would definitely carry a new spare or the old belt with me, and be familiar with how to change it. There has to be either an alignment or tension issue causing this.
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Old 10-07-2022, 07:07 AM   #3
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We have had a couple of coaches with residue on the fan shaft from installation and they had to clean that area to eliminate the noise. That is a freightliner issue and can only performed by them. I would contact you local freightliner dealer for service.
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Old 10-07-2022, 07:37 AM   #4
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I have noticed the same chirping noise and was wondering about this also.
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Old 10-08-2022, 05:36 PM   #5
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I had same issue with my 21DS. I lost the belt at 4000 miles. Got into FL and they replaced the tensioner pulley and belt. It is starting to chirp again when cold but now have 20,000 miles on the rig. I carry an extra belt now and will wait until a failure before I take back to FL. Last time I was at FL they charged me over $800 for diagnosis on issues they said were normal or they could not duplicate. I have fixed a couple of the issues for less than the diagnosis time they charged me-horrible customer service. Rig almost must be towed in there before they will honor their warranty.
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Old 10-09-2022, 05:29 AM   #6
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Called Freightliner (Gaffney) about this chirp. The said they had never heard of it..... (surprise). Asked about drivability - the rep said as long as it is not overheating - I'd be fine. Local Freightliner dealer has a first come first serve evaluation service. Going to run over there tomorrow early and get in line. Se what they say.

Have a trip scheduled that drives by Gaffney in a couple of weeks, planning on stopping to see if someone can look at it also.

Not a bad idea to carry a spare belt. What kind of an ordeal is it to change the belt?
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Old 10-09-2022, 09:06 AM   #7
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Super easy to change the fan belt. Just use a 1/2 breaker bar to relieve tension on the tensioner pulley. Take a picture now so you know the routing for future reference. Literally takes 2-3 minutes to install new belt.
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Old 10-09-2022, 09:23 AM   #8
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When I had the belt chirping problem, bought a new belt, and while bending the old belt to inspect between the rib's, I felt some thing sharp, further bending and looking discovered the belt had wire in it like car tire's and the wire on the pully's is what was making the noise.......

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Old 10-11-2022, 05:20 PM   #9
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Have the same noise and progressively getting worse/louder. Hard to pinpoint exactly where the noise is coming from but seems to be loudest around the fan driveshaft. Appt next week with Freightliner.
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Old 10-18-2022, 08:39 PM   #10
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I have the same exact problem. Found that squirting WD40 on the running belt after my morning startup on travel days fixes the noise immediately...and it does not come back the rest of the day. I also tried belt dressing but only "kinda" works...noise does not always abate like it does with the WD40. This problem start on current trip about 30 days and 2000 miles ago. Plan on taking to FL in Austin once we return next week.
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