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9-50
1977 PONTIAC SERVICE MANUAL
I
Fig.
9-58 Power Antenna Mounting
OVERHAUL PROCEDURE
MAST AND SUPPORT TUBE
Removal
1. Scribe a reference mark on both the mast support tube
and casting to insure correct installation of replacement part.
2. Remove tape that attaches motor leads to support
tube. Remove flexible shielding. Save shielding for re-
assembly.
3. Remove the two (2) screws that attach support tube
to gear box and separate the tube from the gear box.
4. Clamp the gear box in a vise.
CAUTION: Do not clamp gearbox too tight or
possible damage to unit may result.
5. Connect power source (I2 V) to antenna wires
to extend mast and/or run the drive cable out of
the gear box. Refer to Fig. 9-60.
NOTE: If mast fails to extend and/or drive cable does
not move out of gear box, manually assist mast or cable
while motor is running.
Assembly
la. Refer to Fig. 9-61 and start cable in the gear housing
with cable looped in the direction shown.
2. Connect power source (12V) to antenna wires to run
cable into the gear box. Refer to Fig. 9-60.
3. Using the scribe marks made in step 1 under Removal,
assemble the support tube on the gear box in the same
position as the original and install the two (2) retaining
screws.
4. Re-attach leads to support tube with tape and reinstall
flexible shield as required.
5. Re-install antenna unit in vehicle and recheck
operation.
b. Push cable into housing until it bottoms, then apply
pressure to force an additional 3/4 inch of cable into the gear
box. This will engage the cable with the drive pulley.
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