Rolls-Royce Silver Shadow
&
Bentley
T
Series
Workshop
Manual
Chapter
M
Section
MI3
Window lift mechanism-To dismantle
If
the mechanism has not alrcacly bCrn renioced from
t11c door it should 1)c rrmoved as described in
(:hapter
S
-
Body.
(;arc sl~ould be taken when handling the window
lift,
other~visc the special coating on the side of the
channel
may bc partly removed ant1 cause the slide
to
I)econlc noisy in operation.
1.
Release the chain tension by slackening the
t~vo setscrc'ws securing the upper sprocket chain
c.;rrrier to the chain tunnel.
2.
Kenlove one of the circlips from the upper
sprocket
spirldlc, then remove the spindle together
with
tht, remaining circlip; retain the t~.o thin
washers.
.
Slide th~ sprocket down the channel, then
remove the two setscrews and washers securing the
upper sprocket
carrier to the chain channel; remove
the carrier.
.I.
Ilnsc.re\v and ~-cmo\r~ the
2
B.A.
bo!t securing
the channcl sliclc to the chain pick-up plate; with-
draw the
slitlc.
5.
Ren~o\c the chain spring link, withdraw the
chain from the
channel
together with the upper
sprockets and pick-up plate.
ti
I1nscrew and remove the nuts sccrrring the
buffer mounting plate to the aluminium casing and
remove the mounting plate together with the distance
tubes;
remove the upright chain channel.
7.
Ilnscrcw and remove the three nuts and fitted
bolts
secu~ing the spindle end housing to the
aluminiun~ casing; rctnove the end housing.
8.
<:ollcc.t the thrust washer from the inner face
of
the end housing, also collect the adjusting
washer(s).
9.
Renlo\.c thc latgc tubber seal.
10.
U'ithdraw the spindle from the c.asi:~g together
with the
gcar wheel, 'Aletalastic' bush and lower
chain
sprocket.
11. ('sing a prrss and applying pressure to the
sprocket end of the spindle,
remol-e the gear wheel
and
sproc ket from
thr
spindle.
I.
Remo\.c the thruht \vasher Iron1 tht. (aslng.
ELECTRICALLY OPERATED
WINDOW LIFTS
13.
llnscrew and rcmo\,c the setscrews securing
the electric
rnotor to the aluminium casing; remove
the
n~otor.
On later cars with permanent tnagnet motors, it
is sufficient to disconnect the
l.ucar connectors and
remove the
two setscrews securing the motor
to
the
adapter plate.
13. Remove the nylon coupling.
15.
Unscrew and remove the
2
B.A.
bolts and
washers securing the brakc solenoid to the casing;
remove the solenoid.
16.
Remove the brake pad.
17.
Remove the brake guide plate, shims and
spacer.
18.
Using the special spanner (RtI 7819), hold the
worm shaft
firm by fitting the spanner to the splined
end of the shaft and removing the nut and washer
from the opposite end of the shaft.
19.
Withdraw
the disc and closing plate.
20. Remove the distance piece.
21.
Press the worm drive shaft out of the ball
bearing and remove the shaft from the housing.
22.
Remove the circlip retaining the ball bearing;
pres.; out the ball bearing.
Electric window
lift
mechanism
-To inspect
1.
Examine all bearing bushes for signs of
excessive wear and renew if necessary. Before
removing
worn bushes, note their position relative
to their respective housing faces to ensure the
correct assembly of new bushes.
2.
Examine the thrust washcrs for signs of wear
and cracking and
ensure that their retaining pins
are in good condition.
3.
Euaniinc the worm and wheel for worn and
damaged
teeth. When the gears are assembled into
position,
the backlash should be between 0,08 mrn.
and 0.18 mni.
(0.003
in. and 0.007 in.).
4.
Exan~inc the chain for excessive wear by
kisually insprc!ii~l:
thC
link pins and by comparing
its length against that
of
a new chain.
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