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01-05-2015, 03:47 PM
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#1
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Member
Join Date: Jan 2015
Location: Shreveport LA
Posts: 99
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vibration and stabilization
I just picked up a 2009 Allegro 35QBA. It has 27k on the clock.
Since I am new to this, I have a question about the vibration level. I am an auto/aviation mechanic, so I have a pretty good knowledge base on some mechanical stuff. Seems that this unit picks up a "rumble" from about 25mph through cruising speed. It does not change with engine speed or load, just forward speed. It seems to get a little less obvious the faster I go, but it is still there.
Second thing, is there any aftermarket fix for controlling body roll??
Thanks
Milton
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01-05-2015, 03:50 PM
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#2
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Senior Member
Join Date: Dec 2014
Location: East Tennessee
Posts: 980
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I'm thinking flat sided tires from sitting too long. As the tires heat up(warmer weather) it may go away as the tires round out. Can you report on the "born on date" of the tires?
__________________
2016 R-Pod 176T
2002 Avalanche Z71 Tow Veh
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01-05-2015, 03:57 PM
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#3
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Senior Member
Join Date: Dec 2014
Posts: 3,281
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Quote:
Originally Posted by Steeler34
I just picked up a 2009 Allegro 35QBA. It has 27k on the clock.
Since I am new to this, I have a question about the vibration level. I am an auto/aviation mechanic, so I have a pretty good knowledge base on some mechanical stuff. Seems that this unit picks up a "rumble" from about 25mph through cruising speed. It does not change with engine speed or load, just forward speed. It seems to get a little less obvious the faster I go, but it is still there.
Second thing, is there any aftermarket fix for controlling body roll??
Thanks
Milton
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sumo springs...
http://www.irv2.com/forums/f23/putti...ml#post2370984
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01-05-2015, 03:57 PM
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#4
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Member
Join Date: Jan 2015
Location: Shreveport LA
Posts: 99
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I would bet late 2008 or early 2009.
I drove it 250 miles home and there was no change, good or bad.
Milton
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01-05-2015, 03:58 PM
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#5
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Senior Member
Join Date: Dec 2014
Posts: 3,281
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01-05-2015, 04:01 PM
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#6
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Senior Member
Join Date: Dec 2014
Posts: 3,281
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01-05-2015, 04:04 PM
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#7
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Senior Member
Join Date: Dec 2014
Posts: 3,281
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01-05-2015, 05:52 PM
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#8
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Senior Member
Join Date: Oct 2011
Location: Central, SC
Posts: 759
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Quote:
Originally Posted by Steeler34
I just picked up a 2009 Allegro 35QBA. It has 27k on the clock.
Since I am new to this, I have a question about the vibration level. I am an auto/aviation mechanic, so I have a pretty good knowledge base on some mechanical stuff. Seems that this unit picks up a "rumble" from about 25mph through cruising speed. It does not change with engine speed or load, just forward speed. It seems to get a little less obvious the faster I go, but it is still there.
Second thing, is there any aftermarket fix for controlling body roll??
Thanks
Milton
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Could be a universal joint/ carrier bearing on the drive shaft.
1997 Tiffen Allegro Bus 37', Cat 3126
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01-05-2015, 06:22 PM
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#9
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Senior Member
National RV Owners Club Ford Super Duty Owner
Join Date: Sep 2014
Location: Georgia
Posts: 588
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My vote is U-joint or wheel bearing.
__________________
Jerry and Barbara,
2005 Nat Sea Breeze 1321
2010 Honda CR-V toad
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01-05-2015, 06:29 PM
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#10
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Senior Member
Join Date: Aug 2013
Posts: 192
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Try applying the brakes while on the gas to see if the noise changes. If it does it could be a sticking caliper or wheel bearing.
2003 Georgie Boy Cruisemaster-F53 Chassis towing 1998 Tracker
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01-05-2015, 06:32 PM
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#11
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Senior Member
Join Date: Jul 2014
Posts: 35,402
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Could have been towed and drive shaft replaced out of phase. Ujoints need to line up.
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01-05-2015, 07:11 PM
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#12
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Member
Join Date: Jan 2015
Location: Shreveport LA
Posts: 99
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Hey, Thanks!
Looks like the easy thing to do is look at the U joint alignment and if it is like my first car (64 Impala) should be able to shake the hangars.
Next, jack the 2 front corners and spin the wheels. Then, off to tire balancers.
Thanks again.
Milton
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01-06-2015, 12:00 PM
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#13
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Member
Join Date: Jan 2015
Location: Shreveport LA
Posts: 99
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vibration
Think I found it.
Got under the coach and found the first hangar bearing looks like it got whacked.
Thanks all.
Milton
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