| Re: [GMCnet] Good luck or Bad Luck??? (long) [message #92682] |
Tue, 20 July 2010 12:16  |
Bruce
Messages: 18
Registered: February 2004
Karma:
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Junior Member |
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Well... for the past few months I have been chasing a "Rumble" in my coach.
It sounds like the tire rumble when you get on a rougher surface ... like
when it changes from concrete to asphalt. I only hear it when I am sitting
straight up in the driver's seat ... I can tilt my head left or right or
forward or backward and it goes away. Don't hear it at all from the Passenger
seat at all.
I replaced the front bearings ... nothing. Replaced the RH front
driveshaft intermediate bearing and it got much better. Pretty much forgot about
it. Came back slowly so I replaced the entire CV joint / driveshaft assembly
with one from Jim K. Still a slight rumble but not bad. I for got to
mention this happens around 55 mph so I drive 65 and it gets quieter. Posted
here and got a recommendation to check the rear wheel bearings... which I did
... by jacking up and giving them the old "Wobble" test.
We headed North last weekend ... on my birthday ... to compete in a Dog
Agility Show at Quail Lodge in Monterey ... beautiful place. After climbing
the Questa Grade and descending the back side I find I have no brakes and the
Light is on. A couple of pumps gets me enough to stop in a short while
later. I get out and walk around the coach looking for brake fluid or anything
else wrong and notice I am missing all eight Alcoa lug covers from the
middle passenger side wheel. I head inside to use the Men's room telling my
wife the covers are gone. She is leashing up the dogs for a potty break as
well when "BAMMMM" and the coach tilts to the right. She yells "We are on
fire...Get out here!" while I am finishing up in the restroom.
I go out to find the RH middle tire completely blown out and the wheel
hotter than you can believe! What appears to be Fire is brake fluid vaporizing
on the backside of the wheel making all kinds of smoke. Well... problem
found... the wheel bearing is toast. We cool things down and put the spare on
to limp down the road a couple hundred yards to a Tire store I had seen
before. Kept the air out of that bag... I have 4-bag... and made it easy. A
quick call to Jim K's shop for some part number's and we were on the way to
recovery. Inner bearing cone was GONE but spindle was fine. Wheel cylinder
had blown out from the heat as well as the brake springs all lost their
temper and were soft. The tire blew from the excessive pressure built up from
the heat of the brake shoes rubbing on the drum. Guess the lug nut covers
melted off...
The tire store had the bearings and seal in stock as well as some springs
that would work. We got a brake cylinder from Paso Robles just a few miles
away and within a couple of hours we were back on the road.
My wife says jokingly "Happy Birthday" and I think... it really was... We
could have been going down the steep part of the grade or stuck out in the
boondocks somewhere and nobody got hurt.. and I finally figured out what the
rumble was. We both noticed how much quieter the coach is so it has been
coming on for a long time.
Went on to win 3 events at the Agility Show!
Thanks again to the guy's at Jim K's shop for helping out...
Bruce in Sb
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