Rolls-Royce Corniche - Electrically Operated Front Seats; Electrically Operated Seat Mechanism-To Remove and Dismantle

Rolls-Royce Silver Shadow & Bentley T Series
Workshop Manual
Chapter M
Section MI4
ELECTRICALLY OPERATED FRONT SEATS
Electrically operated seat mechanism-
14. Using either a press or a ' Claw' type
extractor, remove the gear and ball bearing from the
To remove and dismantle shaft.
15. Remove the spacer, thrust washer and small
(see Fig. M88) worm shaft from the gear housing.
Early cars
1. Remove the seat cushion.
2.
Remove the four ' Plasti-rings' and pins
securing the seat mechanism, then remove the seat
together with the rake mechanism.
3.
Operate the seat switch to move the seat
mechanism fully forward, then remove the two
socket-headed cap screws and washers securing the
seat mechanism to the floor. Then again operate the
seat switch to move the seat fully rearward and
remove the two socket-headed cap screws and
washers,securing the seat mechanism to the floor.
4. Disconnect the battery.
5.
Disconnect the leads to the solenoids and the
electric motor.
6.
Remove the extension setscrews securing the
clutches to the seat actuating levers.
7.
Remove the split-pin and washer retaining the
electric motor and worm shaft to their
pivot; with-
draw the assembly from the pivot.
8.
Unscrew and remove the four 2 R.A. setscrews
securing the electric motor to the drive housing,
then separate the two units.
9.
Remove the first four roll pins on the large
worm shaft.
10.
Rotate in turn each clutch nut, anti-clockwise
(as viewed from the front of the seat), and remove
the three clutches and solenoids from the worm
shaft. Note the position of the clutch nuts in
relation to the worm shaft to ensure correct assembly.
11. Remove the four 2
B.A. setscrews securing
the cover plate to the drive housing.
12. Withdraw the shaft together with the bearing
and gear assembly.
13. Using a punch, tap out the pin securing the
worm gear to the shaft.
Electrically operated seat mechanism
To remove and dismantle
Late cars
1.
Remove the seat from the car as described in
Chapter
S - Body
2.
Remove the setscrews securing the clutches
to the seat actuating levers.
3.
Remove the screw securing the motor to the
motor support strut.
4.
Remove the split pin and washer retaining the
motor gear housing to the pivot; withdraw the
assembly from the pivot.
5.
Unscrew and remove the four 2 B.A. setscrews
securing the motor to the gear housing then
separate the two units.
6.
Remove the first 4 roll pins from the actuating
screw (counting from the front of the seat).
7.
Rotate each clutch nut anti-clockwise (viewed
from the front of the seats) and remove the three
clutch assemblies from the actuating screw. Note
the position of each clutch assembly on the
actuating screw to ensure correct assembly.
8.
Remove the four 2 B.A. setscrews securing the
cover plate to the gear housing.
9.
Withdraw the actuating screw together with the
bearing and gear assembly.
10.
Using a punch, tap out the pin securing the
worm gear to the actuating screw.
11.
Using either a press or
' claw' type extractor,
remove the gear and bearing from the shaft.
12.
Remove the spacer, thrush washer and small
worm shaft from the gear housing.