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21 - 76
AUTOMATIC TRANSMISSION
•
ADAPTER
LOCK RING
Fig. 2 Replacing Speedometer Adapter Seal
SWITCH
RH266
ADAPTER
6 O'CLOCK POSITION
RH260
Fig. 3 Indexing Speedometer Adapter
t h r o u g h the selector lever i n P a r k and N e u t r a l posi-
tions only. The outer t e r m i n a l s on the switch are for
the backup l a m p c i r c u i t .
SWITCH
TEST
To test t h e switch, remove t h e w i r i n g
connector.
Then test c o n t i n u i t y between t h e center t e r m i n a l
and t h e transmission case. C o n t i n u i t y should exist
only when the transmission is i n P a r k or N e u t r a l .
Shift the transmission into reverse and test conti-
n u i t y
a t t h e switch
outer
terminals.
C o n t i n u i t y
should exist only w h e n t h e transmission is i n Re-
verse. C o n t i n u i t y should not exist between the outer
terminals and the case.
Check gearshift linkage adjustment before replac-
i n g a switch t h a t tests bad.
SWITCH
REPLACEMENT
(1) Raise the vehicle and position a d r a i n pan u n -
der t h e switch.
(2) Disconnect the switch wires.
(3) Remove the s w i t c h from the case.
(4) Move t h e shift lever to P a r k and N e u t r a l posi-
tions. Verify t h a t the switch operating lever fingers
are centered i n the switch opening i n the case (Fig.
4).
(5) I n s t a l l a new seal on the switch and i n s t a l l the
switch i n the case. T i g h t e n the switch to 34 N*m (25
ft-lbs) torque.
(6) Test c o n t i n u i t y o f the new switch w i t h the test
lamp.
(7) Connect the switch wires and lower the vehicle.
(8) Top off the transmission f l u i d level.
Fig. 4 Neutral Start Switch Contacts
EXTENSION HOUSING YOKE SEAL
YOKE SEAL
REPLACEMENT
(1) Raise t h e vehicle.
(2) M a r k propeller a n d axle yokes for alignment
reference. T h e n disconnect the shaft a t the yoke and
remove the shaft.
(3) Remove t h e old seal w i t h tool C-3985 (Fig. 5).
(4) I n s t a l l t h e new seal. Position the seal i n the ex-
tension opening. Then t a p t h e seal i n t o place w i t h
tool C-3995 or C-3972 (Fig. 6).
(5) Carefully guide front universal j o i n t yoke i n t o
extension
housing a n d on t h e mainshaft
splines.
A l i g n m a r k s made a t removal and connect propeller
shaft t o rear axle p i n i o n shaft yoke.
SPECIAL
TOOL
SEAL
RH77
Fig. 5 Removing Extension Housing Yoke Seal
SPECIAL TOOL
RH78
Fig. 6 Installing Extension Housing Yoke Seal
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