Description; Replacement Of Transmission - Plymouth Pl4S Service Manual

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193
Section XXI
TRANSNIISSIC>N
L. DESCfPPTION.
1936-42-The transmission is of the
silent shifting type with three forward
speeds and one reverse speed. The rear end
of the main drive pinion (clutch shaft) is
mounted on a ball bearing. The transmission
mainshaft is mounted in a pilot bearing at
the front end and a ball bearing at the rear
end. The countershaft gear set runs on
straight roller bearings over the counter-
shaft. The countershaft is locked rigidly in
the transmission case so it cannot rotate.
2. REPLACEMENT OF TRANSMISSION.
1940-42
( 1 ) Remove the propeller shaft. If the
transmission is to be disassembled, loosen
mainshaft flange nut. Disconnect speedom-
eter cable. Disconnect hand brake cable at
brake band. Disconnect battery ground
cable from transmission on 1940 model.
Disconnect gearshift control rod and gear-
shift selector rod at transmission. Remove
cap screws or nuts which hold transmission
to clutch housing. Handle transmission care-
fully to avoid springing clutch disc as unit
is withdrawn from clutch housing.
( 2 ) Before installing transmission,
check clutch housing for run-out of both
bore and face. (See paragraph 7.) Face run-
out not to exceed .003 inch; bore run-out
should not exceed .005 inch. Use clutch
plate aligning arbor C-360 or transmission
drive pinion to align clutch plate before in-
stalling transmission. When installing unit,
handle transmission carefully to avoid
springing clutch disc. Check clutch pedal
adjustment after the transmission is in-
stalled.
1939
( 1) Remove floor boards and discon-
nect battery ground cable from transmis-
sion. Disconnect speedometer cable from
transmission. Remove propeller shaft. If
transmissio111 is to be disassembled, loosen
mainshaft flange nut. Disconnect hand brake
cable at lower end. Disconnect gearshifter
rod and cable at transmission case (model
P8 only). Remove gearshift lever and cover
assembly (model P7 only). Remove cover
only on P8 model. Remove cap screws or
nuts which attach transmission to clutch
housing. Handle transmission carefully to
avoid springing clutch disc as unit is with-
drawn from clutch housing.
( 2 ) Before installing transmission,
check clutch housing for run-out of both bore
and face. Bore run-out should not exceed
.005 inch; face run-out should not exceed
.003 inch. (See paragraph 7.) Handle trans-
mission carefully to avoid springing clutch
disc. Check clutch pedal adjustment after
transmission is installed.
1936-38
( 1 ) Remove floor boards and discon-
nect battery ground cable at transmission.
Remove propeller shaft and disconnect
speedometer cable from transmission. If
transmission is to be disassembled, loosen
mainshaft flange nut. Disconnect hand brake
cable at hand brake. Remove nuts from
studs which attach transmission to clutch
housing. Disconnect clutch release fork pull-
back spring from release fork and remove
clevis pin from clutch release fork rod. Re-
move gearshift lever and cover assembly.
Handle transmission carefully to avoid
springing clutch disc as unit is withdrawn
from clutch housing.
( 2 ) Before installing transmission,
check clutch housing for run-out of both
bore and face. Face run-out should not ex-
ceed .003 inch; bore run-out should not
exceed .005 inch. When installing, handle
transmission carefully to avoid springing
clutch disc. Check clutch pedal adjustment
after the transmission is installed.