1994 JEEP CHEROKEE washer fluid

CAUTION: The pump inner gear is a one way fit.
The bore on one side of the gear inside diameter
(I.D.) is chamfered. Be sure the chamfered side
faces forward (to front of pump).
(6) Install new thrust washer on hub of reaction
shaft support. Lubricate washer with transmission
fluid or petroleum jelly.
(7) If reaction shaft seal rings are being replaced,
install new seal rings on support hub (Fig. 54). Lu-
bricate seal rings with transmission fluid or petro-
leum jelly after installation. Squeeze each ring until
ring ends are securely hooked together.
CAUTION: The reaction shaft support seal rings will
break if overspread, or twisted. If new rings are be-
ing installed, spread them only enough for installa-
tion. Also be very sure the ring ends are securely
hooked together after installation. Otherwise, the
rings will either prevent pump installation, or break
during installation.
(8) Install reaction shaft support on pump housing
(Fig. 55).
(9) Align reaction support on pump housing. Use
alignment marks made at disassembly. Or, rotatesupport until bolt holes in support and pump housing
are all aligned (holes are offset for one-way fit).
(10) Install all bolts that attach support to pump
housing. Then tighten bolts finger tight.
(11) Tighten support-to-pump bolts to required
torque as follows:
(a) Reverse pump assembly and install it in
transmission case. Position pump so bolts are fac-
ing out and are accessible.
(b) Secure pump assembly in case with 2 or 3
bolts, or with pilot studs.
(c) Tighten support-to-pump bolts to 20 Nzm (15
ft. lbs.).
(d) Remove pump assembly from transmission case.
(12) Install new oil seal in pump with Special Tool
C-4193 and Tool Handle C-4171 (Fig. 56). Be sure
seal lip faces inward.
(13) Install new seal ring around pump housing.
Be sure seal is properly seated in groove.
(14) Lubricate lip of pump oil seal and O-ring seal
with transmission fluid.
FRONT CLUTCH OVERHAUL
FRONT CLUTCH DISASSEMBLY
(1) Remove waved snap ring and remove pressure
plate, clutch plates and clutch discs (Fig. 57).
(2) Compress clutch piston spring with Compressor
Tool C-3575-A (Fig. 58). Be sure legs of tool are
seated squarely on spring retainer before compress-
ing spring.
Fig. 52 Supporting Pump And Installing Outer Gear
Fig. 53 Pump Inner Gear Installation
Fig. 54 Hub Seal Ring Position
Fig. 55 Assembling Reaction Shaft Support And
Pump Housing
J30RH/32RH TRANSMISSION OVERHAUL 21 - 125

REAR CLUTCH OVERHAUL
REAR CLUTCH DISASSEMBLY
(1) Remove fiber thrust washer from forward side
of clutch retainer.
(2) Remove selective clutch pack snap ring (Figs.
65 and 66).
(3) Remove top pressure plate, clutch discs, steel
plates, bottom pressure plate and wave spring (Figs.
65 and 66).
(4) Remove clutch piston with rotating motion.
(5) Remove and discard piston seals.
(6) Remove input shaft snap ring (Fig. 67).
(7) Press input shaft out of retainer with shop
press and suitable size press tool (Fig. 68).
(8) Remove input shaft front/rear seal rings.
REAR CLUTCH INSPECTION
Clean the clutch components with solvent and dry
them with compressed air. Do not use rags or shop
towels to dry any of the clutch parts. Lint from such
materials will adhere to component surfaces and
could restrict or block fluid passages after assembly.
Replace the clutch discs if warped, worn, scored,
burned/charred, the lugs are damaged, or if the fac-
ing is flaking off. Replace the top and bottom pres-
sure plates if scored, warped, or cracked. Be sure the
driving lugs on the pressure and clutch plates arealso in good condition. The lugs must not be bent,
cracked or damaged in any way.
Fig. 64 Measuring Front Clutch Pack Clearance
Fig. 65 Rear Clutch Components (30RH)
21 - 128 30RH/32RH TRANSMISSION OVERHAULJ

(7) Remove front planetary rear thrust washer
from driving shell.
(8) Separate and remove driving shell, rear plane-
tary and rear annulus from output shaft (Fig. 78).
(9) Remove tabbed thrust washers from rear plan-
etary gear.(10) Remove snap ring that retains sun gear in
driving shell. Then remove sun gear, spacer and
thrust plates.
PLANETARY GEARTRAIN INSPECTION
Clean the planetary components in solvent and dry
them with compressed air.
Check sun gear and driving shell condition (Fig.
79). Replace the gear if damaged or if the bushings
are scored or worn. The bushings are not serviceable.
Replace the driving shell if worn, cracked or dam-
aged.
Replace planetary gear sets if gears, pinion pins, or
carrier are damaged in any way. Replace the annu-
lus gears and supports if either component is worn or
damaged.
Inspect the geartrain spacers, thrust plates, snap
rings, and thrust washers (Fig. 79). Replace any of
these parts that are worn, distorted or damaged. Do
not attempt to reuse these parts.
The planetary gear thrust washers are different
sizes. The large diameter washers go on the front
planetary and the smaller washers go on the rear
planetary. All the washers have four locating tabs on
them. These tabs fit in the holes or slots provided in
each planetary gear.
Inspect the output shaft carefully. Pay particular
attention to the machined bushing/bearing surfaces
on the shaft and the governor valve shaft bore at the
shaft rear.
Replace the output shaft if the machined surfaces
are scored, pitted, or damaged in any way. Also re-
place the shaft if the splines are damaged, or exhib-
its cracks at any location (especially at the governor
valve shaft bore).
The annulus gears can be removed from their sup-
ports if necessary. Just remove the snap rings and
separate the two parts when replacement is neces-
sary. In addition, the annulus gear bushings can be
replaced if severely worn, or scored. However it is
not necessary to replace the bushings if they only ex-
hibit normal wear. Check bushing fit on the output
shaft to be sure.
ASSEMBLING PLANETARY GEARTRAIN
(1) Lubricate output shaft and planetary compo-
nents with transmission fluid. Use petroleum jelly to
lubricate and hold thrust washers and plates in posi-
tion.
(2) Assemble rear annulus gear and support if dis-
assembled. Be sure support snap ring is seated and
that shoulder-side of support faces rearward (Fig.
80).
(3) Install rear thrust washer on rear planetary
gear (Fig. 79). Use enough petroleum jelly to hold
washer in place. Also be sure all four washer tabs
are properly engaged in gear slots.
Fig. 76 Front Planetary Snap Ring Removal
Fig. 77 Front Planetary And Annulus Gear
Disassembly
Fig. 78 Removing Driving Shell, Rear Planetary And
Rear Annulus
21 - 132 30RH/32RH TRANSMISSION OVERHAULJ

(21) Install planetary selective snap ring with snap
ring pliers (Fig. 94). 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 allow geartrain components
to move forward for accurate end play check.
(23) Check planetary geartrain end play with
feeler gauge (Fig. 95). 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
ring is available in three different thicknesses for ad-
justment purposes.
FRONT SERVO AND BAND OVERHAUL
FRONT SERVO DISASSEMBLY (FIG. 96)
(1) Remove small snap ring from servo piston.
(2) Remove piston, rod, springs and guide.
(3) Remove and discard servo piston rings and
O-ring.
FRONT SERVO AND BAND INSPECTION
Clean the servo components with solvent and dry
them with compressed air.
Inspect the servo components. Replace the springs
if collapsed, distorted or broken. Replace the guide,
rod and piston if cracked, bent, or worn. Discard the
servo snap ring if distorted or warped.
Replace the front band if distorted, the lining is
burned or flaking off, or excessively worn.
Check the servo piston bore for wear. Replace the
piston and rod as an assembly if either part is worn
or damaged.
Replace any servo component if doubt exists about
its condition. Do not reuse suspect parts.
ASSEMBLING FRONT SERVO PISTON
(1) Lubricate servo parts with transmission fluid.
(2) Install new O-ring on servo piston rod.
(3) Install new seal on piston rod guide and install
new seal rings on piston.
(4) Assemble rod, piston, servo springs and snap
ring (Fig. 96).
REAR SERVO AND BAND OVERHAUL
REAR SERVO PISTON DISASSEMBLY
(1) Remove seal from servo piston. Note which way
seal lip faces for assembly reference.
(2) Compress cushion spring in vise only enough to
allow piston plug snap ring removal (Fig. 97). Use
wood block between vise jaws and end of piston plug
to keep plug aligned and in position.
(3)
Remove snap ring from end of piston plug (Fig. 97).
(4) Open vise and remove wood block, piston plug,
cushion spring and servo piston.
Fig. 93 Installing Front Annulus Snap Ring
Fig. 94 Installing Planetary Selective Snap Ring
Fig. 95 Checking Planetary Geartrain End Play
21 - 136 30RH/32RH TRANSMISSION OVERHAULJ

(24) Remove 1-2 shift control valve and spring
from valve body (Fig. 113).
(25) Remove 2-3 shift valve and spring from valve
body (Fig. 113).
(26) Remove 1-2 shift valve and spring from valve
body (Fig. 113).
(27) Remove regulator valve end plate (Fig. 113).
(28) Remove regulator valve line pressure plug,
pressure plug sleeve, throttle pressure plug and
spring (Fig. 113).
VALVE BODY CLEANING AND INSPECTION
The only serviceable valve body components are:
²park lock rod and E-clip
²switch valve and spring
²pressure adjusting screw bracket
²throttle valve lever
²manual lever
²manual lever shaft seal, washer, E-clip and detent
ball
²fluid filter
²converter clutch solenoid
The remaining valve body components are serviced
only as part of a complete valve body assembly.
Clean the valve body components in a parts clean-
ing solution only. Do not use gasoline, kerosene, or
any type of caustic solution. Dry the parts with com-
pressed air. Make sure all passages are clean and
free from obstructions.
Do not use rags or shop towels to wipe off
valve body components. Lint from these materi-als will adhere to the valve body components.
Lint will interfere with valve operation and may
clog filters and fluid passages.
Inspect the throttle and manual valve levers and
shafts. Do not attempt to straighten a bent shaft or
correct a loose lever. Replace these components if
worn, bent, loose or damaged in any way.
Inspect all of the valve body mating surfaces for
scratches, nicks, burrs, or distortion. Use a straight-
edge to check surface flatness. Minor scratches may
be removed with crocus cloth using only very light
pressure.
Minor distortion of a valve body mating surface
may be corrected by smoothing the surface with cro-
cus cloth. The cloth should be in sheet form and be
positioned on a surface plate, sheet of plate glass, or
equally flat surface. However, if distortion is severe
or any surfaces are heavily scored, the valve body
will have to be replaced.
CAUTION: The throttle valve, shuttle valve plug, 1-2
shift valve and 1-2 governor plug are made of
coated aluminum. These components are identified
in Figure 114 with the abbreviation (Alum.). Alumi-
num components can be identified by the dark
color of the special coating applied to the surface
(or by testing with a magnet). DO NOT polish or
sand aluminum valves or plugs with any type of
material, or under any circumstances. This practice
might damage the special coating and cause the
valves and plugs to stick and bind.
Fig. 113 Shift Valves And Pressure Regulator Plugs
J30RH/32RH TRANSMISSION OVERHAUL 21 - 141

rect sequence. The correct sequence is line pressure
adjustment first and throttle pressure adjustment
last.
Line Pressure Adjustment
Measure distance from the valve body to the inner
edge of the adjusting screw with an accurate steel
scale (Fig. 119).
Distance should be 33.4 mm (1-5/16 in.).
If adjustment is required, turn the adjusting screw
in, or out, to obtain required distance setting.
The 33.4 mm (1-5/16 in.) setting is an approxi-
mate setting. Because of manufacturing toler-
ances, it may be necessary to vary from this
dimension to obtain desired pressure.
One complete turn of the adjusting screw changes
line pressure approximately 1-2/3 psi (9 kPa). Turn-
ing the adjusting screw counterclockwise increases
pressure while turning the screw clockwise decreases
pressure.
Throttle Pressure Adjustment
Insert Gauge Tool C-3763 between the throttle le-
ver cam and the kickdown valve stem (Fig. 120).
Push the gauge tool inward to compress the kick-
down valve against the spring and bottom the throt-
tle valve.
Maintain pressure against kickdown valve spring.
Turn throttle lever stop screw until the screw head
touches throttle lever tang and the throttle lever cam
touches gauge tool.
The kickdown valve spring must be fully com-
pressed and the kickdown valve completely
bottomed to obtain correct adjustment.
TRANSMISSION ASSEMBLY TIPS
Do not allow dirt, grease, or foreign material to en-
ter the case or transmission components during as-
sembly. Keep the transmission case and components
clean. Also make sure the tools and workbench area
used for assembly are equally clean.Shop towels used for wiping off your hands and ser-
vice tools must be made oflint freematerials. Lint
will adhere to transmission parts and could interfere
with valve operation, or even restrict fluid passages.
Lubricate the transmission components with ATF
Plus, or Dexron IIŸ during reassembly. Use petro-
leum jelly, Door Eze, or Ru-Glyde on seals and
O-rings to ease installation.
Petroleum jelly can also be used to hold thrust
washers and plates in position during assembly oper-
ations. However,do notuse chassis grease, bearing
grease, white grease, or similar lubricants on any
transmission part. These types of lubricants can
eventually block or restrict fluid passages and valve
operation. Use petroleum jelly only.
Do not force parts into place. Most of the transmis-
sion components are easily installed by hand when
properly aligned. If a part seems extremely difficult
to install, it is either misaligned or incorrectly as-
sembled. Also verify that thrust washers, thrust
plates and seal rings are correctly positioned before
assembly. These parts can interfere with proper as-
sembly if mispositioned or ``left out'' by accident.
TRANSMISSION ASSEMBLY AND ADJUSTMENT
PROCEDURES
SERVO INSTALLATION
(1) Install rear servo piston, spring and spring re-
tainer. Compress rear servo spring and retainer with
Compressor Tool C-3422-B or a large C-clamp.
(2) Install front servo piston, spring and rod guide.
Compress front servo rod guide with Valve Spring
Compressor C-3422-B and install servo snap ring.
OVERRUNNING CLUTCH INSTALLATION
(1) Examine bolt holes in overrunning clutch cam.
Note that one hole isnot threaded(Fig. 121). This
hole must align with blank area in clutch cam bolt
circle (Fig. 122).
Fig. 120 Throttle Pressure Adjustment
Fig. 119 Line Pressure Adjustment
21 - 146 30RH/32RH TRANSMISSION OVERHAULJ

(6) Verify that reaction shaft support hub seal
rings are hooked together (Fig. 150).
(7) Coat front clutch thrust washer with petroleum
jelly to hold it in place. Then install washer over re-
action shaft hub and seat it on pump (Fig. 151).CAUTION: The thrust washer bore (I.D.), is cham-
fered on one side. Make sure the chamfered side is
installed so it faces the pump.
(8) Thread two Pilot Stud Tools C-3288-B into bolt
holes in oil pump flange (Fig. 152).
(9) Align and install oil pump gasket (Fig. 152).
(10) Lubricate oil pump seals with Ru-Glyde, Door
Eze, or transmission fluid.
(11) Install oil pump (Fig. 153). Align and position
pump on pilot studs. Slide pump down studs and
work it into front clutch hub and case by hand. Then
install two or three pump bolts to hold pump in
place.
(12) Remove pilot stud tools and install remaining
oil pump bolts. Tighten bolts alternately in diagonal
pattern to 20 Nzm (15 ft-lbs).
CHECKING INPUT SHAFT END PLAY
(1) Measure input shaft end play (Fig. 154).
Fig. 148 Front Band Linkage Installation
Fig. 149 Installing Front Band Pivot Pin Access
Plug
Fig. 150 Reaction Shaft Support Seal Rings
Fig. 151 Front Clutch Thrust Washer Installation
Fig. 152 Installing Pilot Studs And Oil Pump Gasket
J30RH/32RH TRANSMISSION OVERHAUL 21 - 153

(2) Attach dial indicator to converter housing. Po-
sition indicator plunger against input shaft and zero
indicator.
(3) Move input shaft in and out and record read-
ing. End play should be 0.56 - 2.31 mm (0.022 - 0.091
in.).
(4) If end play is incorrect, transmission is incor-
rectly assembled, or output shaft thrust washer
and/or thrust plate are worn and need to be changed.
VALVE BODY INSTALLATION
(1) Install new manual lever shaft seal in case.
Use 15/16 deep well socket to install seal.
(2) Make sure neutral switch hasnotbeen in-
stalled in case. Remove switch if necessary as it will
interfere with valve body installation.
(3) Install new seal rings on accumulator piston
(Fig. 155). Lubricate accumulator piston, seals and
accumulator bore with transmission fluid.(4) Install accumulator piston and spring (Fig. 155)
in case.
(5) Place valve body manual lever in low to move
park lock rod rearward.
(6) Position valve body on case. Work park rod past
sprag and install valve body-to-case bolts finger
tight.
(7) Install park/neutral position switch in case.
Tighten switch to 34 Nzm (25 ft. lbs.) torque.
(8) Align valve body on case (Fig. 156).
(9) Install and tighten valve body-to-case bolts al-
ternately and evenly to 12 Nzm (105 in. lbs.) torque.
Start at center and work outward when tightening
bolts.Do not overtighten valve body bolts. This
could result in distortion and cross leakage af-
ter installation..
(10) Connect converter clutch solenoid wire to case
connector (Fig. 156).
(11) Install new filter on valve body (Fig. 157).
Tighten filter screws to 4 Nzm (35 in. lbs.).
BAND ADJUSTMENT AND OIL PAN
INSTALLATION
(1) Adjustfront bandas follows:
(a) Loosen locknut.
(b) Tighten adjusting screw to 72 in. lbs. torque.
Fig. 153 Installing Oil Pump And Reaction Shaft
Support
Fig. 154 Checking Input Shaft End Play
Fig. 155 Installing Accumulator Piston And Spring
Fig. 156 Valve Body Installation
21 - 154 30RH/32RH TRANSMISSION OVERHAULJ