Dodge RAM TRUCK 1500 1995 Service Manual page 1431

21 - 148 42RH/46RH/47RH TRANSMISSION IN-VEHICLE SERVICE
SPECIAL TOOL
C-3995-A
SPECIAL
TOOL
G4471 J9521-58
Fig. 20 Yoke Seal Installation
GOVERNOR AND PARI LOCI SERVICE
The governor and park lock components are located
within the overdrive unit and cannot be serviced in
the vehicle.
The overdrive unit must be removed and disassem­
bled for access to the governor and park lock compo­
nents.
Refer to the overdrive unit overhaul section for re­
pair procedures.
VALVE BODY SERVICE
GENERAL SERVICE INFORMATION
The valve body can be removed for service without
having to remove the entire transmission assembly.
The valve body can be disassembled for cleaning
and inspection of the individual components. Throttle
and line pressure can also be adjusted. Refer to the
procedures in the appropriate transmission overhaul
section.
The only serviceable valve body components are:
• manual lever
• manual lever washer/seal/E-clip and shaft seal
• manual lever detent ball and spring
© throttle lever
• fluid filter
• solenoid, harness and connector assembly
© switch valve, spring and adjusting screw bracket
® park rod and E-clip
The remaining valve body components are serviced
only as part of a complete valve body assembly.
WALWE BODY
REMOVAL
(1) Raise vehicle.
(2) Remove oil pan and drain fluid.
(3) Loosen clamp bolts and remove throttle valve
and shift levers from valve body manual lever shaft.
(4) Remove park/neutral position switch.
(5) Remove filter from valve body.
(6) Remove valve body attaching screws.
(7) Push 4-speed solenoid connector downward to
start it out of case.
(8) Lower valve body enough to remove accumula­
tor piston and piston spring (Fig. 21). Note number
of accumulator springs removed. Some trans­
missions (like 47RH)* have one spring while
others h a v e two.
(9) Pull valve body forward to disengage park rod.
(10) Push manual lever shaft and solenoid case
connector out of transmission case. Then lower valve
body, rotate it away from case, pull park rod out of
sprag and remove valve body (Fig. 22).
ACCUMULATOR OUTER
PISTON SPRING
INNER SEAL
SPRING RINGS •
J932M87
Fig. 21 Accumulator Piston And Springs
UPPER
HOUSING
PLATE LOWER VALVE
HOUSING HOUSING J932M64
Fig. 22 Valve Body Assembly
VALVE BODY
INSTALLATION
(1) Verify that park/neutral position switch has
NOT been installed. Valve body cannot be installed
with switch in place. Remove switch if necessary.
(2) Install accumulator piston in case. Use petro­
leum jelly to hold piston in place.
(3) Place valve body manual lever in low to ease
park rod installation.
(4) Use screwdriver to push park sprag into en­
gagement with park gear. This allows knob on rod to
move past sprag when valve body is installed. Rotate
output shaft to verify sprag engagement.
(5) Position accumulator spring between accumula­
tor piston and valve body.