Advertisement
21-1 2
TRANSMlSSlON4-SPEED MANUAL
MAJOR SERVICING
Removal
To remove the transmission on the 121Y2 inch
wheelbase Plymouth Station Wagons, it will be neces-
sary to first remove the torsion bar rear anchor cross-
member and rubber isolators. Refer to Group 2,
"Torsion Bar Rubber Isolator" for procedures, then
remove the transmission as follows:
(1) Drain the lubricant from the transmission.
(2)
Disconnect the propeller shaft, speedometer ca-
ble and housing and the gearshift control rods.
Re-
move speedometer cable (pinion comes out with ca-
ble) by
hand so that housing is not crushed.
(3) Remove the back-up light switch leads (if so
equipped).
(4) Install engine support fixture C-3487, mounting
firmly into the holes in the side frame members with
the support ends up against the underside of the oil
pan flange. Use Adapter Leg C-3806 on 6-cyl. en-
gines.
(5) Adjust the fixture to support the weight of the
engine, then raise the engine slightly and remove the
rear support crossmember attaching bolts.
(6) Support the transmission, using a suitable jack
and then remove the bolts that attach the transmis-
sion to the clutch housing.
(7)
Slide the transmission rearward until the pin-
ion shaft clears the clutch disc before lowering the
transmission. (This precaution will avoid damaging
the clutch disc.)
(8) Lower the transmission and remove from un-
der the vehicle.
(9) Remove the rear motor support and crossmem-
ber, then mount the transmission in repair stand
DD-1014.
DISASSEMBLY
To disassemble the transmission for cleaning and
overhaul, refer to (Fig. 19 or 20), then proceed as
follows:
(1) Using Tool C-3281, flange holding tool, remove
the flange retaining nut and washer.
(2) If necessary, attach puller Tool C-452, and re-
move the flange assembly.
(3) Remove the bolts that attach the cover to the
case. Remove the cover then discard the gasket.
(4)
Using a pair of feeler gauges, measure the syn-
chronizer float. The measurement of the "float" should
be taken before any further disassembly of the trans-
mission is attempted.
(5) The synchronizer "float" should be between
.050
and
.090
inch, when measured between the syn-
chronizer outer ring pin and the opposite synchro-
nizer outer ring (Fig. 21). This measurement must be
made on two pins, 180 degrees apart with equal gap
on both ends for "float" determination.
(6) There should be a snug fit between the pins
3-SPEED MANUAL
Fig. 21-Measuring
Synchronizer "Float"
and the outer rings, similar to that obtained when
measuring with a micrometer.
€xtension Housing
(1) Remove the bolts and one nut that attaches the
extension housing to the transmission case. Slide the
extension housing off the mainshaft. Discard the gas-
ket.
Drive Pinion
(1) Remove the bolts that attach the main drive
pinion bearing retainer, then slide the retainer off the
pinion. Discard the gasket and drive the seal out of
the retainer, using a suitable drift.
(2)
Grasp the pinion shaft and pull the assembly out
of the case slightly, then slide the synchronizer front
inner stop ring from the short splines on the pin-
ion as the pinion assembly is being removed from the
case (Fig. 22).
P
I
- _
1
61
xl21
Fig. 22-Removing
Drive Pinion Assembly
Hide quick links:
Advertisement
