Dodge D150 1990 Service Manual page 697

ervoir is to provide fuel a t t h e p u m p i n t a k e d u r i n g
a l l d r i v i n g conditions, especially those w h e n low fuel
levels are present. The fuel r e t u r n l i n e directs fuel
i n t o the reservoir.
FUEL GAUGE SENDING UNIT
The fuel gauge sending u n i t is attached t o t h e fuel
p u m p module (Fig. 11). The fuel p u m p module m u s t
be removed t o service t h e fuel gauge sending u n i t .
Fig. 11 Fuel Gauge Sending Unit
REMOVAL
(1) Remove fuel gauge sending u n i t fasteners from
m o u n t i n g bracket on d r a i n tube (Fig. 11).
(2) Disconnect electrical wires from level u n i t (Fig.
12).
Fig. 12 Servicing Fuel Gauge Sending Unit
(3) Reverse above procedure for i n s t a l l a t i o n .
FUEL TANK PRESSURE RELIEF/ROLLOVER VALVE
The fuel t a n k s o f a l l vehicles are equipped w i t h a
pressure relief/rollover v a l v e . T h e d u a l function
valves relieve f u e l t a n k pressure a n d prevent fuel
flow t h r o u g h t h e fuel t a n k v e n t hoses i n t h e event of
vehicle rollover. A l l vehicles pass a f u l l 360° rollover
w i t h o u t fuel leakage.
The pressure relief/rollover valve ( F i g . 13) is
mounted a t t h e t o p o f the f u e l p u m p module.
PRESSURE RELIEF/ROLLOVER VALVE SCREWDRIVER
Fig. 13 Servicing Pressure Relief/Rollover Valve
REMOVAL
(1) Remove fuel t a n k refer t o " F u e l T a n k s " section
i n t h i s group.
(2) Wedge t h e blade o f a s t r a i g h t screwdriver be-
tween t h e rubber grommet a n d t h e fuel t a n k where
the support r i b i s located ( F i g . 13). D o n o t w e d g e
b e t w e e n t h e v a l v e a n d t h e g r o m m e t o r d a m a g e
t o t h e v a l v e m a y r e s u l t u p o n r e m o v a l .
(3) Use a second screwdriver as a support to p r y
the valve and grommet assembly from t h e t a n k .
(4) To remove t h e grommet from t h e valve, place
the valve u p r i g h t on a f l a t surface and push down on
the grommet peeling i t down off the valve.
INSTALLATION
(1) I n s t a l l t h e rubber g r o m m e t i n t h e fuel t a n k a n d
w o r k i t around t h e curled l i p .
(2) Lubricate t h e grommet w i t h P o w e r S t e e r i n g
F l u i d a n d push t h e valve d o w n w a r d i n t o the grom-
met. T w i s t valve u n t i l properly positioned.
(3) I n s t a l l fuel t a n k . Refer t o " F u e l T a n k Installa-
t i o n " .