Pontiac tempest 1968 Service Manual page 544

FUEL T A N K A N D E X H A U S T SYSTEM
8-3
F U E L G A U G E
G R O U N D W I R E
VENT HOSE
TEMPEST REAR VENT
P L A T E
UNDERBODY
TEMPEST FRONT VENT
PLATE
UNDERBODY
PONTIAC GRAND PRIX ONLY
UNDERBODY
PONTIAC (EXCEPT G R A N D PRIX)
Fig. 8-3 Vent Hose Routing Tempest and Pontiac
FUEL GAUGE TANK UNIT-PONTIAC AND TEMPEST
(STATION WAGONS) (Fig. 8-9)
Replacement
NOTE: Before removing tank unit be sure it is
actually inoperative (see fuel gauge checking
procedure).
1. Remove fuel filler cap and drain fuel tank as
necessary to insure fuel level is below point where
unit is installed in tank.
2. Remove left rear wheel from automobile.
3. Remove fuel tank front splash shield.
4. Disconnect ground connection and waterproof
tank gauge wire connector.
5. Clean away any dirt that has collected around
tank unit and tank unit terminal so it will not enter
tank when unit is removed.
6. Remove tank sending unit by using tool J 21518.
7. Replace by reversing the above procedures,
making sure a new tank sending unit gasket is
installed.
NOTE: Before the new unit is installed in the
tank, the float arm should be checked for freedom
of movement by raising it to various positions and