Mike
Ride height is set by height, not by air pressure. But 90 lbs is
about average for the correct height.
There is an oblong hole cut into the frame behind the rear wheels.
The correct height is 11 11/16 inches (+/- 1/4 in) from level ground
to the top of that hole. Page 109 in my 78 manual.
If you use lifters - pressure is about 55-60#
Mike F
- -----Original Message-----
From: owner-gmcmotorhome
[mailto
wner-gmcmotorhome]On Behalf Of Magnuson, Mike
Sent: Wednesday, September 22, 1999 9:06 AM
To: gmcmotorhome
Subject: GMC: Air suspension pressure.
Don't want to ask a dumb question or one that has been visited before but
what is the recommended or preferred operating pressure for the suspension.
Mine appears to operate between 85 - 90 psi. is this correct? Also in the
manual it states something about being able to raise the suspension with the
knobs in the raise position to temporarily travel over rough or high
obstacles. When I place mine in the raise position nothing happens. Is
this feature supposed to work? I'm assuming the pressure is adjusted with
the pop off valve (wherever it is) just as in a well or typical air
compressor. Where does the secondary raise option shut off at?
Thanks,
Mike
'74 Sequoia
Ride height is set by height, not by air pressure. But 90 lbs is
about average for the correct height.
There is an oblong hole cut into the frame behind the rear wheels.
The correct height is 11 11/16 inches (+/- 1/4 in) from level ground
to the top of that hole. Page 109 in my 78 manual.
If you use lifters - pressure is about 55-60#
Mike F
- -----Original Message-----
From: owner-gmcmotorhome
[mailto
wner-gmcmotorhome]On Behalf Of Magnuson, MikeSent: Wednesday, September 22, 1999 9:06 AM
To: gmcmotorhome
Subject: GMC: Air suspension pressure.
Don't want to ask a dumb question or one that has been visited before but
what is the recommended or preferred operating pressure for the suspension.
Mine appears to operate between 85 - 90 psi. is this correct? Also in the
manual it states something about being able to raise the suspension with the
knobs in the raise position to temporarily travel over rough or high
obstacles. When I place mine in the raise position nothing happens. Is
this feature supposed to work? I'm assuming the pressure is adjusted with
the pop off valve (wherever it is) just as in a well or typical air
compressor. Where does the secondary raise option shut off at?
Thanks,
Mike
'74 Sequoia
