GMC 1976 ZEO 6083 Maintenance Manual page 757

Condition
Possible Cause
LP gas tank has been over-
filled and regulator has
frozen up.
Leaking fill valve as- Damaged or dirt in
sembly or liquid level
mechanism.
outage valve.
Gas tank is known to be Damaged float or sight
full, however, the tank valve .
sight valve does not
indicate full .
ADJUSTMENT
In freezing weather, water
in the system may freeze
and block regulator or
lines.
ON-VEHICLE ADJUSTMENT
REGULATOR
The regulator shown in Figure 2 is adjustable and
is set at the factory to deliver LP gas at a rate of 11
+/- 1 inches of water pressure as measured on a ma-
nometer.
WARNING : FAILURE TO PERFORM REGULA-
TOR ADJUSTMENT ACCURATELY COULD RE-
SULT IN IMPROPER OPERATION OF LP GAS
APPLIANCES WITHIN MOTOR HOME AND BE
A HEALTH AND SAFETY HAZARD TO OCCU-
PANTS OF VEHICLE.
WARNING : NEVER INCREASE REGULATOR
PRESSURE WITHOUT A MANOMETER CHECK .
EXCESSIVE LINE PRESSURE COULD RESULT IN
AN LP GAS LEAK WHICH IS FLAMABLE AND
POTENTIALLY DANGEROUS TO VEHICLE AND
PERSONNEL .
LP GAS SYSTEM 24F- 3
Correction
Empty LP gas tank. Refer to "LP
GAS TANK-REMOVAL" later in
this section for proper procedure
of emptying tank. Refill tank
correctly, see "WARNING"
at beginning of this section .
In freezing weather add 1 pint of
suitable tank and gas line anti-
freeze . Then using a monometer
check regulator. Refer to "ON-
VEHICLE ADJUSTMENTS"
later in this section.
Empty LP gas tank. Refer to "LP
GAS TANK-REMOVAL" later in
this
section for proper emptying and
removal of the tank.
Flush out tank with a suitable gas
system anti-freeze. Add 1 pint of
same anti-freeze to tank and fill
with LP gas.
Replace valve or valve seat. Refer to
specific subjects later in this
section.
Replace float and/or sight valve as
described later in this section .
Manometer Check
1. Pull range cover up to expose burners.
2 . Hang manometer (J-8639) from closet top by
Figure 2-Regulator