GMC MOTORHOME 1978 User Manual

mph
(60 km/h) for distances up to 50 miles
(80 kilometres), provided the final drive, axle,
transmission and steering
system
are normally
operable . However, if the front of the vehicle
must be raised before it can be towed, it is im-
portant that you follow this precautionary
procedure :
NOTICE : If the front of the vehicle is raised for
towing, vehicle speed should be limited to 5-15
mph
(10-20 km/h), depending on road surface .
This should
be done to avoid damage to
the
vehicle .
If the front of the vehicle must be raised for
towing, raising
the
front
wheels
four inches off
the ground will leave about five inches ground
clearance at rear (assuming the vehicle started
at design ride height and with proper loading) .
For any towing, the steering must
be
un-
locked, transmission in NEUTRAL, and the
parking
brake released .
Also,
be
sure the igni-
tion key is in the "OFF" position (not "ACCES-
SORY" or "LOCK") .
Connect towing equipment to engine front
crossmember as shown in illustration . Do NOT
attach to bumpers or brackets . Remember
also
that power brakes and power steering will not
work when engine is off .
If
the
vehicle is to be towed by a wrecker,
use
only
equipment
designed for this purpose,
following the instructions of the wrecker manu-
facturer . A safety chain system must be used
.
IT IS NOT RECOMMENDED THAT VE-
HICLE BE TOWED WITH THE REAR
LIFTED, AS THIS COULD RESULT IN
FRONT SUSPENSION OR CROSSMEMBER
DAMAGE .
FREEING VEHICLE FROM SAND, ETC .
If your Motorhome gets stuck in sand, mud,
or snow, move the transmission shift lever from
"D" to "R" in a repeat pattern while applying
moderate pressure to the accelerator . Do not
race engine . For best traction, avoid spinning
wheels .
CAUTION
Do
not spin wheels
faster
than 35 mph
(60 km/h) or for more than 3
minutes
at a time . Personal injury and damage
may result from excessive wheel spin-
ning, including transmission overheat-
ing, tire disintegration and/or differ-
ential failure .
7 7
Location for
Adding Air-Type I Rear
Suspension
REAR
SUSPENSION FAILURE
EMERGENCY OPERATION
In the event of total air
loss for any reason,
the vehicle
may be driven at a speed of 5-15
MPH (10-20 km/h) depending on road surface,
with the rear of the vehicle
in the fully "DOWN"
position . Care should
be exercised since ground
clarance at the rear will
be at a minimum . If
total air loss has occurred, vehicle
should be
taken to nearest
Motorhome dealer . (For further
information
on
the
rear suspension system,
refer
to
the
SERVICE AND MAINTENANCE section
of
this manual .)
Depending upon the type of rear suspension
failure, it may be possible to add air to the rear
suspension air bellows . This should be done
inside the Motorhome in vehicles with both
Type I and Type II suspension systems . (To
determine which type of rear suspension
system
you have, refer
to "Rear Suspension" in the
SERVICE AND MAINTENANCE section of
this manual .)
In vehicles with mechanical height control
valves
(Type
I suspension), air should be added
to
the rear
suspension wet tank at the shop air
fill valve
(see illustration)
.
Wet tank is located
with the control
components in the closet of the
Motorhome .
In
vehicles with electronic height control
sensors and two air compressors (Type II sus-
pension), air should be added to the air valve
fitting (see illustration) on the output side of
each compressor . Compressors are located with
the control components in the closet of the
Motorhome .

GMC MOTORHOME 1978 Specifications

General

Brand	GMC
Model	MOTORHOME 1978
Category	Motorhomes
Language	English