INSTALLATION
(1) Install pitman shaft bearing into housing with
a bearing driver and handle.
(2) Coat the oil seal and washer withspecial
greasesupplied with the new seal.
(3) Install the oil seal with a driver and handle.
(4) Install backup washer.
(5) Install the retainer ring with snap ring pliers.
(6) Coat the dust seal withspecial greasesup-
plied with the new seal.
(7) Install dust seal with a driver and handle.
(8) Install pitman shaft to side cover by screwing
shaft in until it fully seats to side cover.
(9) Install preload adjuster nut.Do not tighten
nut until after Over-Center Rotation Torque
adjustment has been made.
(10) Install gasket to side cover and bend tabs
around edges of side cover (Fig. 11).
(11) Install pitman shaft assembly and side cover
to housing.
(12) Install side cover bolts and tighten to 60 N´m
(44 ft. lbs.).
(13) Perform over-center rotation torque adjust-
ment, (Refer to 19 - STEERING/GEAR - ADJUST-
MENTS).
PITMAN SHAFT SEAL
REMOVAL
(1) Clean exposed end of pitman shaft and housing
with a wire brush.
(2) Remove preload adjuster nut (Fig. 19).
(3) Rotate the stub shaft with a 12 point socket
from stop to stop and count the number of turns.
(4) Center the stub shaft by rotating it from the
stop 1/2 of the total amount of turns.
(5) Remove side cover bolts and remove side cover,
gasket and pitman shaft as an assembly (Fig. 19).
NOTE: The pitman shaft will not clear the housing if
it is not centered.
(6) Remove pitman shaft from the side cover.
(7) Remove dust seal from the housing with a seal
pick (Fig. 20).
CAUTION: Use care not to score the housing bore
when prying out seals and washer.
(8) Remove retaining ring with snap ring pliers.
(9) Remove washer from the housing.
(10) Remove oil seal from the housing with a seal
pick.
(11) Remove pitman shaft bearing from housing
with a bearing driver and handle (Fig. 21).
Fig. 19 Side Cover and Pitman Shaft
1 - SIDE COVER BOLTS
2 - PRELOAD ADJUSTER NUT
3 - SIDE COVER
4 - GASKET SEAL
5 - PITMAN SHAFT GEAR
6 - HOUSING ASSEMBLY
Fig. 20 Pitman Shaft Seals & Bearing
1 - BEARING
2 - WASHER
3 - DUST SEAL
4 - RETAINER
5 - OIL SEAL
BR/BEGEAR 19 - 23
PITMAN SHAFT (Continued)
(8) Remove the O-ring between the worm shaft
and the stub shaft.
INSTALLATION
NOTE: Clean and dry all components, then lubricate
with power steering fluid.(1) Install spool valve spool O-ring.
(2) Install spool valve in valve body by pushing
and rotating. Hole in spool valve for stub shaft pin
must be accessible from opposite end of valve body.
(3) Install stub shaft in valve spool and engage
locating pin on stub shaft into spool valve hole (Fig.
30).
NOTE: Notch in stub shaft cap must fully engage
valve body pin and seat against valve body shoul-
der.
(4) Install O-rings and teflon rings over the
O-rings on valve body.
(5) Install O-ring into the back of the stub shaft
cap (Fig. 31).
(6) Install stub shaft and valve assembly in the
housing. Line up worm shaft to slots in the valve
assembly.
(7) Install thrust support assembly.
NOTE: The thrust support is serviced as an assem-
bly. If any component of the thrust support is dam-
aged the assembly must be replaced.
(8) Install adjuster nut and lock nut.
(9) Adjust Thrust Bearing Preload and Over-Cen-
ter Rotating Torque, (Refer to 19 - STEERING/GEAR
- ADJUSTMENTS).
Fig. 28 Spool Valve
1 - SPOOL VALVE
2 - ROTATE VALVE TO REMOVE
3 - VALVE BODY
Fig. 29 Valve Seals
1 - O-RING SEALS
Fig. 30 Stub Shaft Installation
1 - NOTCH IN CAP
2 - VALVE BODY PIN
19 - 26 GEARBR/BE
SPOOL VALVE (Continued)
(11) Install the rack piston and arbor tool into the
housing.
(12) Hold arbor tightly against worm shaft and
turn stub shaft CLOCKWISE until rack piston is
seated on worm shaft.
(13) Install pitman shaft and side cover in the
housing.
(14) Install rack piston plug and tighten to 150
N´m (111 ft. lbs.).
(15) Install housing end plug, (Refer to 19 -
STEERING/GEAR/STEERING GEAR HOUSING
PLUG - INSTALLATION).
(16) Adjust worm shaft thrust bearing preload and
over-center rotating torque, (Refer to 19 - STEER-
ING/GEAR - ADJUSTMENTS).
Fig. 41 Balls in the Return Guide
1 - GUIDE
2 - PETROLEUM JELLY
3 - BALLS
19 - 30 GEARBR/BE
WORM SHAFT (Continued)
MAINSHAFT END PLAY
(1) Install mainshaft rear bearing cup in case and
over bearing. Tap bearing cup into place with plastic
mallet.
(2) Install rear bearing plate to hold mainshaft
and rear bearing in position (Fig. 114).
NOTE: Do not install any end play shims at this
time.
(3) Tighten rear bearing plate bolts securely.
(4) Place gear case in upright position on bench.
Either cut hole in bench to accept drive gear and
front retainer or use C-clamps to secure transmission
on bench.
NOTE: Do not leave transmission unsupported.
(5) Install Extension Rod 8161 into a suitable
threaded hole in rear of case.
(6) Mount dial indicator on extension rod and posi-
tion indicator plunger against end of mainshaft.
(7) Move mainshaft forward to remove all play
then zero dial indicator.
(8) Move mainshaft upward and record dial indica-
tor reading. Move mainshaft with pry tool positioned
between drive gear and case.
(9) End play should be 0.051-0.15 mm (0.002-0.006
in.). Select fit shims are available to adjust end play.
If end play adjustment is required, remove bearing
plate and install necessary shim.(10) Reinstall rear bearing plate with oil hole in
bearing plate at the top (Fig. 114).
(11) Apply MopartLock N' Seal or equivalent to
bearing plate bolt threads. Install and tighten bolts
to 23 N´m (200 in. lbs.).
(12) Install mainshaft fifth gear with Installer
6446 (Fig. 115). Gear is seated when it contacts rear
bearing.
Fig. 113 Front Bearing Retainer
1 - DRIVE GEAR
2 - FRONT BEARING RETAINER
Fig. 114 Rear Bearing Plate
1 - BEARING PLATE OIL HOLE (AT TOP)
2 - MAINSHAFT REAR BEARING PLATE
Fig. 115 Mainshaft Fifth Gear
1 - MAINSHAFT FIFTH GEAR
2 - INSTALLER 6446
21 - 78 MANUAL - NV4500BR/BE
MANUAL - NV4500 (Continued)
(20) Install front annulus snap-ring (Fig. 212). Use
snap-ring pliers to avoid distorting ring during
installation. Also be sure ring is fully seated.
(21) Install planetary selective snap-ring with
snap-ring pliers (Fig. 213). Be sure ring is fully
seated.
(22) Turn planetary geartrain assembly over so
driving shell is facing workbench. Then support
geartrain on wood block positioned under forward
end of output shaft. This allows geartrain compo-
nents to move forward for accurate end play check.
(23) Check planetary geartrain end play with
feeler gauge (Fig. 214). Gauge goes between shoulder
on output shaft and end of rear annulus support.
(24) Geartrain end play should be 0.12 to 1.22 mm
(0.005 to 0.048 in.). If end play is incorrect, snap-ring
(or thrust washers) may have to be replaced. Snap-
rings are available in three different thicknesses for
adjustment purposes.
Fig. 212 Installing Front Annulus Snap-Ring
1 - SNAP-RING PLIERS
2 - FRONT ANNULUS SNAP-RING
Fig. 213 Installing Planetary Selective Snap-Ring
1 - SELECTIVE SNAP-RING
2 - SNAP-RING PLIERS
Fig. 214 Checking Planetary Geartrain End Play
1 - OUTPUT SHAFT
2 - REAR ANNULUS GEAR
3 - FEELER GAUGE
BR/BEAUTOMATIC TRANSMISSION - 42RE 21 - 245
PLANETARY GEARTRAIN/OUTPUT SHAFT (Continued)
3-4 ACCUMULATOR
(1) Position converter clutch valve and 3-4 shift
valve springs in housing (Fig. 313).
(2) Loosely attach accumulator housing with right-
side screw (Fig. 313). Install only one screw at this
time as accumulator must be free to pivot upward for
ease of installation.
(3) Install 3-4 shift valve and spring.
(4) Install converter clutch timing valve and
spring.
(5) Position plug on end of converter clutch valve
spring. Then compress and hold springs and plug in
place with fingers of one hand.
(6) Swing accumulator housing upward over valve
springs and plug.
(7) Hold accumulator housing firmly in place and
install remaining two attaching screws. Be sure
springs and clutch valve plug are properly seated
(Fig. 314). Tighten screws to 4 N´m (35 in. lbs.).
VALVE BODY FINAL
(1) Install boost valve, valve spring, retainer and
cover plate. Tighten cover plate screws to 4 N´m (35
in. lbs.) torque.
(2) Insert manual lever detent spring in upper
housing.
(3) Position detent ball on end of spring. Then hold
detent ball and spring in detent housing with
Retainer Tool 6583 (Fig. 315).(4) Install throttle lever in upper housing. Then
install manual lever over throttle lever and start
manual lever into housing.
(5) Align manual lever with detent ball and man-
ual valve. Hold throttle lever upward. Then press
down on manual lever until fully seated. Remove
detent ball retainer tool after lever is seated.
(6) Then install manual lever seal, washer and
E-clip.
(7) Verify that throttle lever is aligned with end of
kickdown valve stem and that manual lever arm is
engaged in manual valve (Fig. 316).
(8) Position line pressure adjusting screw in
adjusting screw bracket.
(9) Install spring on end of line pressure regulator
valve.
(10) Install switch valve spring on tang at end of
adjusting screw bracket.
(11) Install manual valve.
(12) Install throttle valve and spring.
(13) Install kickdown valve and detent.
(14) Install pressure regulator valve.
(15) Install switch valve.
(16) Position adjusting screw bracket on valve
body. Align valve springs and press bracket into
place. Install short, upper bracket screws first and
long bottom screw last. Verify that valve springs and
bracket are properly aligned. Then tighten all three
bracket screws to 4 N´m (35 in. lbs.) torque.
(17) Perform Line Pressure and Throttle Pressure
adjustments. (Refer to 21 - TRANSMISSION/TRAN-
SAXLE/AUTOMATIC/VALVE BODY - ADJUST-
MENTS)
(18) Lubricate solenoid case connector O-rings and
shaft of manual lever with light coat of petroleum
jelly.
Fig. 313 Converter Clutch And 3-4 Shift Valve
Springs
1 - RIGHT-SIDE SCREW
2 - 3-4 ACCUMULATOR
3 - 3-4 SHIFT VALVE SPRING
4 - CONVERTER CLUTCH VALVE SPRING
Fig. 314 Seating 3-4 Accumulator On Lower
Housing
1 - ACCUMULATOR BOX
2 - CONVERTER CLUTCH VALVE PLUG
BR/BEAUTOMATIC TRANSMISSION - 42RE 21 - 301
VALVE BODY (Continued)
(14) Install front planetary gear on output shaft
and in driving shell (Fig. 207).
(15) Install front thrust washer on front planetary
gear. Use enough petroleum jelly to hold washer in
place and be sure all four washer tabs are seated.
(16) Assemble front annulus gear and support, if
necessary. Be sure support snap-ring is seated.
(17) Install front annulus on front planetary (Fig.
207).
(18) Position thrust plate on front annulus gear
support (Fig. 208). Note that plate has two tabs on it.
These tabs fit in notches of annulus hub.
(19) Install thrust washer in front annulus (Fig.
209). Align flat on washer with flat on planetary hub.
Also be sure washer tab is facing up.
(20) Install front annulus snap-ring (Fig. 210). Use
snap-ring pliers to avoid distorting ring during
installation. Also be sure ring is fully seated.
(21) Install planetary selective snap-ring with
snap-ring pliers (Fig. 211). Be sure ring is fully
seated.(22) Turn planetary geartrain assembly over so
driving shell is facing workbench. Then support
geartrain on wood block positioned under forward
end of output shaft. This allows geartrain compo-
nents to move forward for accurate end play check.
(23) Check planetary geartrain end play with
feeler gauge (Fig. 212). Gauge goes between shoulder
on output shaft and end of rear annulus support.
(24) Geartrain end play should be 0.12 to 1.22 mm
(0.005 to 0.048 in.). If end play is incorrect, snap-ring
(or thrust washers) may have to be replaced. Snap-
rings are available in three different thicknesses for
adjustment purposes.
Fig. 206 Installing Rear Thrust Washer On Front
Planetary Gear
1 - FRONT PLANETARY GEAR
2 - REAR TABBED THRUST WASHER
Fig. 207 Installing Front Planetary And Annulus
Gears
1 - FRONT PLANETARY GEAR
2 - FRONT THRUST WASHER
3 - FRONT ANNULUS GEAR
Fig. 208 Positioning Thrust Plate On Front Annulus
Support
1 - FRONT ANNULUS
2 - THRUST PLATE
BR/BEAUTOMATIC TRANSMISSION - 44RE 21 - 415
PLANETARY GEARTRAIN/OUTPUT SHAFT (Continued)
VALVE BODY FINAL
(1) Install boost valve, valve spring, retainer and
cover plate. Tighten cover plate screws to 4 N´m (35
in. lbs.) torque.
(2) Insert manual lever detent spring in upper
housing.(3) Position detent ball on end of spring. Then hold
detent ball and spring in detent housing with
Retainer Tool 6583 (Fig. 313).
(4) Install throttle lever in upper housing. Then
install manual lever over throttle lever and start
manual lever into housing.
(5) Align manual lever with detent ball and man-
ual valve. Hold throttle lever upward. Then press
down on manual lever until fully seated. Remove
detent ball retainer tool after lever is seated.
(6) Then install manual lever seal, washer and
E-clip.
(7) Verify that throttle lever is aligned with end of
kickdown valve stem and that manual lever arm is
engaged in manual valve (Fig. 314).
(8) Position line pressure adjusting screw in
adjusting screw bracket.
(9) Install spring on end of line pressure regulator
valve.
(10) Install switch valve spring on tang at end of
adjusting screw bracket.
(11) Install manual valve.
(12) Install throttle valve and spring.
(13) Install kickdown valve and detent.
(14) Install pressure regulator valve.
(15) Install switch valve.
(16) Position adjusting screw bracket on valve
body. Align valve springs and press bracket into
place. Install short, upper bracket screws first and
long bottom screw last. Verify that valve springs and
bracket are properly aligned. Then tighten all three
bracket screws to 4 N´m (35 in. lbs.) torque.
(17) Perform Line Pressure and Throttle Pressure
adjustments. (Refer to 21 - TRANSMISSION/TRAN-
SAXLE/AUTOMATIC/VALVE BODY - ADJUST-
MENTS)
(18) Lubricate solenoid case connector O-rings and
shaft of manual lever with light coat of petroleum
jelly.
(19) Attach solenoid case connector to 3-4 accumu-
lator with shoulder-type screw. Connector has small
locating tang that fits in dimple at top of accumula-
tor housing (Fig. 315). Seat tang in dimple before
tightening connector screw.
(20) Install solenoid assembly and gasket. Tighten
solenoid attaching screws to 8 N´m (72 in. lbs.)
torque.
(21) Verify that solenoid wire harness is properly
routed (Fig. 316). Solenoid harness must be clear of
manual lever and park rod and not be pinched
between accumulator housing and cover.
Fig. 311 Converter Clutch And 3-4 Shift Valve
Springs
1 - RIGHT-SIDE SCREW
2 - 3-4 ACCUMULATOR
3 - 3-4 SHIFT VALVE SPRING
4 - CONVERTER CLUTCH VALVE SPRING
Fig. 312 Seating 3-4 Accumulator On Lower
Housing
1 - ACCUMULATOR BOX
2 - CONVERTER CLUTCH VALVE PLUG
BR/BEAUTOMATIC TRANSMISSION - 44RE 21 - 473
VALVE BODY (Continued)