Dodge RAM TRUCK 1500 1995 Service Manual page 1440

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42RH/46RH/47RH TRANSMISSION/OVERDRIVE REMOVAL AND INSTALLATION 21 -157
(5) Mark propeller shaft universal joint and axle
pinion yoke for alignment reference at installation
(Fig. 1).
Fig. 1 Shaft And Yoke Alignment
(6) Disconnect and remove propeller shaft.
(7) Support transmission with transmission jack.
(8) Remove rear crossmember.
(9) Remove vehicle speed sensor and speedometer
adapter.
(10) Remove bolts attaching overdrive unit to
transmission (Fig. 2).
CAUTION: Support the overdrive unit with a jack
before moving it rearward. This is necessary to pre­
vent damaging the intermediate shaft. Do not allow
the shaft to support the entire weight of the over­
drive unit.
Fig. 2 Removing/Installing Overdrive Unit Attaching
Bolts
(11) Carefully work overdrive unit off intermediate
shaft. Do not tilt compounder during removal. Keep
it as level as possible.
(a) If overdrive unit does not require service, im­
mediately insert Alignment Tool 6227-2 in
splines of planetary gear and overrunning
clutch to prevent splines from rotating out of
alignment. If misalignment occurs, overdrive
unit will have to be disassembled in order to
realign splines.
(b) If overdrive unit requires service, refer to
Overdrive Unit Overhaul procedures.
(12) Remove and retain overdrive piston thrust
bearing. Bearing may remain on piston or in clutch
hub during removal.
(13) Position drain pan on workbench.
(14) Place overdrive unit over drain pan. Tilt unit
to drain residual fluid from case.
(15) Examine fluid for clutch material or metal
fragments. If fluid contains these items, overhaul will
be necessary.
(16) If overdrive unit does not require any service,
leave alignment tool in position. Tool will prevent ac­
cidental misalignment of planetary gear and overrun­
ning clutch splines.
OVERDRIVE UNIT INSTALLATION
(1) Be sure overdrive unit Alignment Tool 6227-2 is
fully seated before moving unit. If tool is not seated
and gear splines rotate out of alignment, overdrive
unit may have to be disassembled in order to realign
splines.
(2) If overdrive piston retainer was not removed
during service and original case gasket is no longer
reusable, prepare new gasket by trimming it as de­
scribed in steps (2) through (4). However, if original
gasket is in good condition, proceed to step (5).
(3) Cut out old case gasket around piston retainer
with razor knife (Fig. 3).
(4) Use old gasket as template and trim new gas­
ket to fit.
(5) Position new gasket over piston retainer and on
transmission case. Use petroleum jelly to hold gasket
in place if necessary. Do not use any type of
sealer to secure gasket. Use petroleum jelly
only.
(6) Install selective spacer on intermediate shaft, if
removed. Spacer goes in groove just rearward of
shaft rear splines (Fig. 4).
(7) Install overdrive piston in retainer (If re­
moved). Lubricate piston seals with Mopar Door
Ease, or Ru-Glyde to ease installation. Be sure piston
locating lugs are aligned in piston retainer.
(8) Install thrust bearing in overdrive unit sliding
hub. Use petroleum jelly to hold bearing in position.
CAUTION: B e sure the shoulder on the inside diam­
eter of the bearing is facing forward.
(9) Verify that splines in overdrive planetary gear
and overrunning clutch hub are aligned with Align­
ment Tool 6227-2. Overdrive unit cannot be in­
stalled if splines are not aligned. If splines have