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04-12-2011, 08:26 AM
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#1
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Junior Member
Join Date: Jun 2009
Posts: 21
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Just picked up my new Tiffin Allegro 35QBA (f53,22,000 gvwr, 242" WB) at Ancira RV in Boerne, Tx. On the drive back to Dallas area I noticed a fairly loud whine in the driveline. Really begins to sing at 60-65 mph, louder on acceleration and quiets down when coasting. It has about a 1000 miles on it. Does anyone have any info on this condition?
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04-12-2011, 08:42 AM
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#2
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Senior Member
Fleetwood Owners Club Ford Super Duty Owner
Join Date: Aug 2009
Posts: 3,008
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Quote:
Originally Posted by GARYMC74
Just picked up my new Tiffin Allegro 35QBA (f53,22,000 gvwr, 242" WB) at Ancira RV in Boerne, Tx. On the drive back to Dallas area I noticed a fairly loud whine in the driveline. Really begins to sing at 60-65 mph, louder on acceleration and quiets down when coasting. It has about a 1000 miles on it. Does anyone have any info on this condition?
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It may not be the engine. On my Bounder, the front grill has about 12 hollow alum tubes with end caps and it produced the same noise at a certain speed. Fleetwood had the dealer fill the hollow tubes with pool sand and the noise disappeared.
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 2008 35e Bounder F53 V-10 Ford, 2009 HHR LT2 ,SMI stay-n-play duo, TST tpms.
Cliff,Tallulah and Buddy( 13 year old Shih-tzu )
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04-12-2011, 09:07 AM
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#3
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Senior Member
Join Date: Jan 2010
Posts: 345
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Quote:
Originally Posted by GARYMC74
Just picked up my new Tiffin Allegro 35QBA (f53,22,000 gvwr, 242" WB) at Ancira RV in Boerne, Tx. On the drive back to Dallas area I noticed a fairly loud whine in the driveline. Really begins to sing at 60-65 mph, louder on acceleration and quiets down when coasting. It has about a 1000 miles on it. Does anyone have any info on this condition?
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Sounds like differential gear noise. Suggest a Ford truck shop take a look.
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2008 Damon Daybreak 3575 on Ford 22,000lb chasis, 242" WB.
Toad: 2011 Lincoln MKT Ecoboost AWD
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04-13-2011, 06:53 AM
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#4
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Senior Member
Ford Super Duty Owner
Join Date: Dec 2009
Location: Easton, Ks
Posts: 482
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That type of sound most of the time comes from a loose pinion nut.
Do as jcthorne said above and have them check the torque on that nut. If it is loose it will also start to leak oil out of the pinion seal.
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Bill
1994 COACHMEN Santara 350FL on a 1994 Ford F53
subford@gmail.com
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06-29-2011, 07:50 PM
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#5
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Junior Member
Newmar Owners Club Ford Super Duty Owner
Join Date: Jun 2009
Posts: 9
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The noise only starts when the engine RPM encreases. I removed the engine cover and at idle the engine sounded great, when I encrease the RPM the noise starts. Would it be hard to change the clutch fan? I keep an eye on the temp and it appears to be normal, no encrease the last time I use the home.
Thanks guys for the input so fast.
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Winger01
2006 Scottsdale
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