Fuel Economy Gage; On-Car Service; A And G Series; F Series - Pontiac TRANS AM 1977 Service Manual

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ACCESSORIES
9-55
FUEL ECONOMY GAGE
ON-CAR SERVICE
All rally gages, tachometers, fuel economy gages, and
clocks are replaced as listed below.
A AND G SERIES
To replace the rally gages, remove the upper trimplate,
remove the cluster lens, and remove the gage cluster from the
front (see Section 8).
To replace the tachometer (which also houses a clock),
the fuel economy gage (which also houses a clock), or the
clock by itself, remove the upper trimplate, remove the cluster
assembly, and remove the gage from the rear of the cluster.
Refer to Section 8 for instrument panel cluster removal. Fig.
9-68 shows the tachometer installation, and Fig. 9-69 shows
clock installation. Fig 9-70 shows fuel economy gage hose
routing.
B SERIES
All gages in the B Series are replaced by removing the
upper trimplate, removing the cluster lens, and removing the
gage from the front (see Section 8). Fig 9-7 1 shows the digital
clock removal (which requires only trimplate removal), and
Fig. 9-72 shows fuel economy gage hose routing.
F SERIES
Replacements procedures are the same as A and G Series
above. Fig. 9-73 shows the rally gage and tachometer
installation.
X SERIES
Replacement of any gage in X Series requires removal
of the instrument cluster as described in Section 8. Since no
front trimplate is used, no gages can be removed from the
front. Fig. 9-74 shows the tachometer wiring.
H AND H M SERIES
All gages except the clock can be replaced from the front
by removing the trimpate, removing the cluster lens, and
removing the gage from the front (see Section 8). No fuel
economy gage is available.
The clock can be removed from beneath the instrument
panel by removing the "hush" panel, removing the "set" knob
and screws, and removing the clock from the back of the
panel (see Fig. 9-75).

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