Pontiac tempest 1968 Service Manual page 421

7D-2
1968 P O N T I A C S E R V I C E MANUAL
NUT
F i g . 7D-1 Pontiac Shift Controls
3. Insert screwdriver in slot in fitting and pry
fitting, gear and shaft from housing.
4. Pry O-ring from groove in fitting and discard.
5. Check gear, shaft and fitting for wear and r e ­
place, if necessary.
NOTE: Check for correct usage by referring to
speedometer drive and driven gear usage chart
in Section 0.
SPEEDOMETER DRIVEN GEAR-INSTALL
1. Install new O-ring in groove and insert shaft.
2. Hold the assembly so slot in fitting is toward
boss on housing and install in housing.
3. Push fitting into housing until retainer can be
inserted into slot.
4. Install retainer bolt and lockwasher and tighten
to 4 lb. ft. torque.
5. Connect speedometer c a b l e to speedometer
driven gear and sleeve assembly.
TRANSMISSION EXTENSION OIL SEAL-
REMOVE AND INSTALL
To inspect or replace the rear extension oil seal,
it is necessary to remove the propeller shaft assem­
bly from the vehicle.
1. Remove U-bolt nuts, lock plates (or lock­
washers) and U-bolts from rear axle drive pinion
flange.
NOTE: If tie wire has been removed, use rubber
band to hold bearings onto journals to prevent loss
of needle bearings when rear joint is disconnected.
2. Slide propeller shaft assembly rearward to dis­
engage yoke from splines on transmission mainshaft.
3. Use punch or other suitable tool and loosen oil
seal from extension, remove and discard (Fig. 7D-4).
4. Wash counterbore with cleaning solvent and i n ­
spect for damage.
5. Inspect propeller shaft yoke for nicks, burrs
or scratches which would cut new seal or cause
seal to leak or damage bushing.
6. Coat new seal with sealing compound and press