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trying to find out why my coach sags on the drivers side
#1

hi all,

my coach drops on the drivers side overnight. i have played with different things and today i used my ultrasonic leak detector but didnt hear anything anywhere.

richard gave me the idea to create a test/isolation setup. it has a pressure gauge and a ball valve. i took off the line on the back of the rear 6 pack manifold and put this setup in between the six pack and the line going to the rear drivers side ping tank for the airbags when.

i measured all 4 corners and noted the air pressure and will check in the morning. last nite it dropped 2 inches on the drivers side overnite.

i have already changed all the rear airbags and checked everything over and over.

here are the pictures of the setup

tom


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2002 45'8" Newell Coach 608  Series 60 DDEC4/Allison World 6 Speed HD4000MH

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#2

Is it dropping with the leveling on auto?

Forest & Cindy Olivier
1987 log cabin
2011 Roadtrek C210P
PO 1999 Foretravel 36'
1998 Newell 45' #486 

1993 Newell 39' #337 
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#3

Were you able to check the 4 valves for the tag that are mounted to the inside of the frame.

can you determine if it is the drive, tag or both?

Gordon
1991 41.5' #266
8V92 DDEC II
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#4

dont know.

i have been keeping track of each corner and both front and back drop on the drivers side. rear passenger side stays steady as a rock.

what i dont know is if the rear is so heavy it takes the front down too

when it was up on a lift we checked for leaks and didnt see any. i have replaced all 6 rear bags.

i am trying to eliminate one thing at a time.

tom

2002 45'8" Newell Coach 608  Series 60 DDEC4/Allison World 6 Speed HD4000MH

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#5

Could it be the o-rings on the solenoids leaking?

Forest & Cindy Olivier
1987 log cabin
2011 Roadtrek C210P
PO 1999 Foretravel 36'
1998 Newell 45' #486 

1993 Newell 39' #337 
Reply
#6

i replaced them all

2002 45'8" Newell Coach 608  Series 60 DDEC4/Allison World 6 Speed HD4000MH

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#7

I just don't see a leaking rear will drag down the front, unless on a severe angle down toward the front. If level, or close, weight transfers diagonally.
Think we need to wait till AM to read the gauge.

Gordon
1991 41.5' #266
8V92 DDEC II
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#8

yea. it is puzzling.

tom

2002 45'8" Newell Coach 608  Series 60 DDEC4/Allison World 6 Speed HD4000MH

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#9

yea slides seem to make it worse

tom

2002 45'8" Newell Coach 608  Series 60 DDEC4/Allison World 6 Speed HD4000MH

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#10

Tom,

What kind of Height Control Valves do you have on your coach?

Tuga & Karen Gaidry

2005 Honda Pilot
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