JEEP XJ 1995 Service And Repair Manual

The aluminum governor valve and outer weight
have a hard coating on them. Check condition of this
coating carefully. Do not reuse either part if the coat-
ing is damaged.Inspect the governor weight spring for distortion.
Replace the spring, if distorted, collapsed, or broken.
Clean the filter in solvent. Shake excess solvent
from filter and allow it to air dry. Replace the filter,
Fig. 41 Two-Stage Inner Weight Snap Ring
Removal/InstallationFig. 42 Three-Stage Inner Weight Snap Ring
Removal/Installation
Fig. 43 Governor Weight Components (2- and 3-Stage)
J30RH/32RH TRANSMISSION OVERHAUL 21 - 129

if damaged. Inspect the park gear for chipped or
worn gear teeth or damaged ring grooves. Replace
the gear, if damaged.
Check the teeth on the park gear for wear or dam-
age. Replace the gear if necessary. Inspect the metal
seal rings on the park gear hub. Replace the rings
only if severely worn, or broken.
Minor scratches, or burrs on governor components
can be cleaned up with oil-soaked crocus cloth. How-
ever, do not attempt to salvage components that are
severely worn or scored.
The governor valve is made of aluminum and
the output shaft has been spotfaced to accept
the valve. The aluminum valve must not be
used in prior transmissions. The valve can only
be used with an output shaft that has been
spotfaced for valve end clearance. In addition,
the governor body and output shaft must be
properly indexed during reassembly. Be sure to
index these components as described in the
Transmission Assembly and Adjustment proce-
dures.
Check condition of the park gear seal rings, ring
grooves and gear teeth (Fig. 45). Replace the gear as
an assembly if the teeth or ring grooves are worn, or
damaged.
Replace the park gear front and rear seal rings if
cracked, or worn. The front ring is a plain type andthe rear ring is a hook style. If replacement rings are
both hook-style, be sure the ring ends are properly
hooked together.
GOVERNOR/PARK GEAR ASSEMBLY
(1) Lubricate governor components with Mopar
ATF Plus transmission fluid during assembly.
(2) Install new seal rings on park gear hub (Fig.
45). Install ring with interlock ends first and ring
with plain ends last. Slip each ring on hub and seat
them in grooves. Verify that rear ring ends are se-
curely interlocked before proceeding.
CAUTION: Exercise care when installing the rings.
They are easily broken if overspread or twisted dur-
ing installation.
(3) Insert filter screen in park gear. Note that gear
has one filter bore that is concentric and one that
has a notch in it. Filter goes in bore that is concen-
tric as shown (Fig. 39).
(4) Position governor body on park gear. Be sure
filter is properly aligned in body recess.
(5) Install governor-to-park gear bolts snug but not
to required torque at this time.
Fig. 44 Governor Components (30RH/32RH)
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(6) Assemble governor weight components (Fig.
43). Then install weight assembly in governor body.
Be sure inner weight snap ring is fully seated
before proceeding.
(7) Install retainer washer and snap ring that se-
cure governor weight assembly in governor body.
(8) Set assembly aside until final assembly and in-
stallation.
OIL PUMP OVERHAUL
PUMP AND REACTION SHAFT SUPPORT
DISASSEMBLY
(1) Remove seal ring from housing and reaction
shaft support (Fig. 46).
(2) Mark pump housing and support assembly for
alignment reference.
(3) Loosen bolts that attach pump body to support
(Fig. 47).
(4) Remove pump-to-support bolts and separate
support from pump housing (Fig. 48).
(5) Remove inner and outer gears from reaction
shaft support (Fig. 49).(6) If pump seal was not removed during transmis-
sion disassembly, remove seal with punch and ham-
mer.
(7) Remove front clutch thrust washer from sup-
port hub (Fig. 50).
OIL PUMP AND REACTION SHAFT SUPPORT
CLEANING-INSPECTION
Clean pump and reaction shaft support components
with solvent and dry them with compressed air.
Inspect the pump housing and support components.
Replace the housing or support if the seal ring
grooves or machined surfaces are worn, scored, pit-
ted, or damaged.
Replace the pump gears if pitted, worn chipped, or
damaged. Inspect the thrust washer for wear or dam-
age. Replace the washer if necessary.Note that the
inner gear used in 1993 and later 30RH/32RH
Fig. 45 Park Gear Seal Ring Position
Fig. 46 Removing Pump Seal Ring
Fig. 47 Loosening Pump Support Bolts
Fig. 48 Separating Pump Housing From Reaction
Shaft Support
Fig. 49 Pump Gear Removal
J30RH/32RH TRANSMISSION OVERHAUL 21 - 131

oil pumps has a new design drive lug. The new
design incorporates tapered drive flats instead
of the square lug used previously. The torque
converter hub has also been redesigned to ac-
cept the new drive flats. If pump gear replace-
ment is necessary, be very sure to order and
install the correct style gears.
Inspect the pump and reaction shaft support bush-
ings. Minor bushing wear is acceptable. Replace the
bushings only if scored, or severely worn.
Install the gears in the pump housing and measure
end clearance with a feeler gauge and straightedge
(Fig. 51). The pump inner gear is a one way fit. The
bore on one side of the gear inside diameter is cham-
fered. Be sure the chamfered side faces forward (to
front of pump). Clearance should be 0.010 - 0.06 mm
(0.0004 - 0.0025 in.).
Measure clearance between the outer gear and the
pump body (Fig. 52). Clearance should be 0.08 - 0.19
mm (0.0035 - 0.0075 in.).
Measure gear tooth clearance with a feeler gauge.
Align one tooth of the outer gear in inner gear and
measure clearance (Fig. 53). Clearance should be
0.08 - 0.19 mm (0.0035 - 0.0075 in.).
OIL PUMP BUSHING REPLACEMENT
(1) Remove pump bushing with Tool Handle
C-4171 and Bushing Remover SP-3551 (Fig. 54).
Fig. 50 Oil Pump And Reaction Shaft Support Components
Fig. 51 Measuring Pump Gear End Clearance
Fig. 52 Measuring Pump Housing-To-Inner Gear
Clearances
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(2) Install new pump bushing with Tool Handle
C-4171 and Bushing Installer SP-5117 (Fig. 54).
Bushing should be flush with pump housing bore.
(3) Stake new pump bushing in two places with
blunt punch (Fig. 55). Remove burrs from stake
points with knife blade afterward.
REACTION SHAFT SUPPORT BUSHING
REPLACEMENT
(1) Assemble Bushing Remover Tools SP-1191,
3633 and 5324 (Fig. 56).Do not clamp any part of
reaction shaft or support in vise.
(2) Hold Cup Tool SP-3633 firmly against reaction
shaft and thread remover SP-5324 into bushing as
far as possible by hand. Then thread remover tool 3-4
additional turns into bushing with a wrench.
(3) Turn remover tool hex nut down against re-
mover cup to pull bushing from shaft. Clean all chips
from shaft after bushing removal.
(4) Lightly grip old bushing in vise or with pliers
and back remover tool out of bushing.(5) Assemble Bushing Installer Tools C-4171 and
SP-5325 (Fig. 56).
(6) Slide new bushing onto Installer Tool SP-5325.
(7) Position reaction shaft support upright on a
clean smooth surface.
(8) Align bushing in bore. Then tap bushing into
place until Bushing Installer SP-5325 bottoms.
(9) Clean reaction shaft support thoroughly after
installing bushing.
ASSEMBLING OIL PUMP AND REACTION
SHAFT SUPPORT
(1) Lubricate gear bore in pump housing with
transmission fluid.
(2) Lubricate pump gears with transmission fluid.
(3) Support pump housing on wood blocks (Fig.
57).
(4) Install outer gear in pump housing (Fig. 57).
Gear can be installed either way (it is not a one-way
fit).
(5) Install pump inner gear (Fig. 58).
Fig. 53 Measuring Pump Gear Tooth Clearance
Fig. 54 Removing Oil Pump Bushing
Fig. 55 Staking Oil Pump Bushing
Fig. 56 Replacing Reaction Shaft Support Bushing
J30RH/32RH TRANSMISSION OVERHAUL 21 - 133

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. 59). 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. 60).(9) Align reaction support on pump housing. Use
alignment marks made at disassembly. Or, rotate
support 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. 61). 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. 62).
Fig. 57 Supporting Pump And Installing Outer Gear
Fig. 58 Pump Inner Gear Installation
Fig. 59 Hub Seal Ring Position
Fig. 60 Assembling Reaction Shaft Support And
Pump Housing
21 - 134 30RH/32RH TRANSMISSION OVERHAULJ

(2) Compress clutch piston spring with Compressor
Tool C-3575-A (Fig. 63). Be sure legs of tool are
seated squarely on spring retainer before compress-
ing spring.
(3) Remove retainer snap ring and remove com-
pressor tool.
(4) Remove spring retainer and clutch spring. Note
position of retainer on spring for assembly reference.
(5) Remove clutch piston from clutch retainer. Re-
move piston by rotating it up and out of retainer.
(6) Remove seals from clutch piston and clutch re-
tainer hub. Discard both seals as they are not reus-
able.
FRONT CLUTCH INSPECTION
Clean the front clutch components in solvent and
dry them with compressed air only. Do not use rags
or shop towels to dry any of the clutch parts. Lint
from such materials will adhere to the component
surfaces and could restrict or block fluid passages af-
ter assembly.
Fig. 63 Compressing Front Clutch Piston Spring
Fig. 62 Front Clutch Components (30RH/32RH)
Fig. 61 Pump Oil Seal Installation
J30RH/32RH TRANSMISSION OVERHAUL 21 - 135

Replace the clutch discs if warped, worn, scored,
burned or charred, or if the facing is flaking off. Re-
place the steel plates if heavily scored, warped, or
broken. Be sure the driving lugs on the plates are in
good condition. The lugs must not be bent, cracked or
damaged in any way.
Replace the clutch spring and spring retainer if ei-
ther is distorted, warped or broken.
Check the lug grooves in the clutch retainer. The
steel plates should slide freely in the slots. Replace
the retainer if the grooves are worn or damaged.
Check action of the check ball in the retainer (Fig.
64). The ball must move freely and not stick.
Inspect the front clutch retainer bushings
carefully (Fig. 65). The retainer bushings are
not serviceable. It will be necessary to replace
the retainer if either bushing is scored, or
worn.
Inspect the piston and retainer seal surfaces for
nicks or scratches. Minor scratches can be removed
with crocus cloth. However, replace the piston and/or
retainer if the seal surfaces are seriously scored.FRONT CLUTCH ASSEMBLY
(1) Soak clutch discs in transmission fluid while
assembling other clutch parts.
(2) Install new seals on piston and in hub of re-
tainer. Be sure lip of each seal faces interior of clutch
retainer.
(3) Lubricate lips of piston and retainer seals with
liberal quantity of Mopar Door Ease, or Ru-Glyde.
Then lubricate retainer hub, bore and piston with
light coat of transmission fluid.
(4) Install clutch piston in retainer (Fig. 66). Use
twisting motion to seat piston in bottom of retainer. A
thin strip of plastic (about 0.0209thick), can be used
to guide seals into place if necessary.
CAUTION: Never push the clutch piston straight in.
This will fold the seals over causing leakage and
clutch slip. In addition, never use any type of metal
tool to help ease the piston seals into place. Metal
tools will cut, shave, or score the seals.
(5) Position spring in clutch piston (Fig. 67).
(6) Position spring retainer on top of piston spring
(Fig. 68).Make sure retainer is properly in-
stalled. Small raised tabs should be facing up-
ward. Semicircular lugs on underside of
retainer are for positioning retainer in spring.
Fig. 64 Front Clutch Piston Retainer Check Ball
Location
Fig. 65 Retainer Bushing Locations
Fig. 66 Front Clutch Piston Installation
Fig. 67 Clutch Piston Spring Installation
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(7) Compress piston spring and retainer with Com-
pressor Tool C-3575-A (Fig. 69). Then install new
snap ring to secure spring retainer and spring.
(8) Install clutch plates and discs (Fig. 62). Install
steel plate then disc until all plates and discs are in-
stalled. 30RH and 32RH transmissions both require
4 clutch discs.
(9) Install pressure plate and waved snap ring
(Fig. 62).
(10) Check clutch plate clearance (Fig. 69). Clear-
ance should be 1.70 to 3.40 mm (0.067 to 0.134 in.).
If clearance is incorrect, clutch discs, plates pressure
plates and snap ring may have to be changed.
Fig. 70 Rear Clutch Components (30RH)
Fig. 68 Correct Spring Retainer Installed Position
Fig. 69 Measuring Front Clutch Pack Clearance
J30RH/32RH TRANSMISSION OVERHAUL 21 - 137

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.
70 and 71).
(3) Remove top pressure plate, clutch discs, steel
plates, bottom pressure plate and wave spring (Figs.
70 and 71).
(4) Remove clutch piston with rotating motion.
(5) Remove and discard piston seals.
(6) Remove input shaft snap ring (Fig. 72).
(7) Press input shaft out of retainer with shop
press and suitable size press tool (Fig. 73).
(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.
Replace the piston spring and wave spring if either
part is distorted, warped or broken.
Check the lug grooves in the clutch retainer. The
clutch and pressure plates should slide freely in the
slots. Replace the retainer if the grooves are worn or
damaged. Also check action of the check balls in the
retainer and piston. Each check ball must move
freely and not stick.
Fig. 71 Rear Clutch Components (32RH)
Fig. 72 Removing/Installing Input Shaft Snap Ring
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