Dodge Durango (DN). Manual — part 110
aged, or if the roller cage is distorted, or damaged.
Replace the cam if worn, cracked or damaged.
Replace the low-reverse drum if the clutch race,
roller surface or inside diameter is scored, worn or
damaged. Do not remove the clutch race from
the low-reverse drum under any circumstances.
Replace the drum and race as an assembly if
either component is damaged.
Examine the overdrive piston retainer carefully for
wear, cracks, scoring or other damage. Be sure the
retainer hub is a snug fit in the case and drum.
Replace the retainer if worn or damaged.
ACCUMULATOR
Inspect the accumulator piston and seal rings (Fig.
308). Replace the seal rings if worn or cut. Replace
the piston if chipped or cracked.
Check condition of the accumulator inner and
outer springs (Fig. 308). Replace the springs if the
coils are cracked, distorted or collapsed.
FRONT SERVO
Clean the servo piston components with solvent
and dry them with compressed air. Wipe the band
clean with lint free shop towels.
Replace the front band if distorted, lining is
burned, flaking off, or worn to the point where the
grooves in the lining material are no longer visible.
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.
Check the servo piston bore for wear. If the bore is
severely scored, or damaged, it will be necessary to
replace the case.
Replace any servo component if doubt exists about
condition. Do not reuse suspect parts.
REAR SERVO
Remove and discard the servo piston seal ring (Fig.
309). Then clean the servo components with solvent
and dry with compressed air. Replace either spring if
collapsed, distorted or broken. Replace the plug and
piston if cracked, bent, or worn. Discard the servo
snap rings and use a new ones at assembly.
OIL PUMP AND REACTION SHAFT SUPPORT
Clean pump and support components with solvent
and dry them with compressed air.
Check condition of the seal rings and thrust
washer on the reaction shaft support. The seal rings
do not need to be replaced unless cracked, broken, or
severely worn.
Inspect the pump and support components. Replace
the pump or support if the seal ring grooves or
machined surfaces are worn, scored, pitted, or dam-
aged. Replace the pump gears if pitted, worn
chipped, or damaged.
Check the pump vent. The vent must be secure.
Replace the pump body if the vent is cracked, broken,
or loose.
Inspect the pump bushing. Then check the reaction
shaft support bushing. Replace either bushing only if
heavily worn, scored or damaged. It is not necessary
to replace the bushings unless they are actually dam-
aged.
(1) Install the gears in the pump body and mea-
sure pump component clearances as follows:
(a) Clearance between outer gear and reaction
shaft housing should be 0.010 to 0.063 mm (0.0004
to 0.0025 in.). Clearance between inner gear and
reaction shaft housing should be 0.010 to 0.063
mm (0.0004 to 0.0025 in.). Both clearances can be
measured at the same time by:
Fig. 308 Accumulator Components
1 – INNER SPRING
2 – ACCUMULATOR PISTON
3 – OUTER SPRING
4 – SEAL RINGS
Fig. 309 Rear Servo Components
1 – SNAP RING
2 – PISTON SEAL
3 – PISTON PLUG
4 – SPRING RETAINER
5 – SNAP RING
6 – PISTON SPRING
7 – CUSHION SPRING
8 – PISTON
21 - 306
46RE AUTOMATIC TRANSMISSION
DN
CLEANING AND INSPECTION (Continued)
(I) Installing the pump gears in the pump
housing.
(II) Position an appropriate piece of Plasti-
gage
y across both gears.
(III) Align the plastigage to a flat area on the
reaction shaft housing.
(IV) Install the reaction shaft to the pump
housing.
(V) Separate the reaction shaft housing from
the pump housing and measure the Plastigage
y
following the instructions supplied with it.
(b) Clearance between inner gear tooth and
outer gear should be 0.08 to 0.19 mm (0.0035 to
0.0075 in.). Measure clearance with an appropriate
feeler gauge (Fig. 310).
(c) Clearance between outer gear and pump
housing should also be 0.010 to 0.19 mm (0.0035 to
0.0075 in.). Measure clearance with an appropriate
feeler gauge.
FRONT CLUTCH
Clean and inspect the front clutch components.
Replace the clutch discs if warped, worn, scored,
burned or charred, the lugs are damaged, or if the
facing is flaking off. Replace the steel plates and
reaction plate if heavily scored, warped, or broken.
Be sure the driving lugs on the discs and plate are
also in good condition. The lugs must not be bent,
cracked or damaged in any way.
Replace the piston springs and spring retainer if
either are distorted, warped or broken.
Check the lug grooves in the clutch piston retainer.
The steel plates should slide freely in the slots.
Replace the piston retainer if the grooves are worn or
damaged. Also check action of the check ball in the
piston retainer. The ball must move freely and not
stick.
Replace the retainer bushing if worn, scored, or
there is any doubt about bushing condition.
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.
Check the clutch piston check ball. The ball should
be securely in place. Replace the piston if the ball is
missing, or seized in place.
REAR CLUTCH
Clean the clutch components with solvent and dry
them with compressed air.
Check condition of the input shaft seal rings. It is
not necessary to remove or replace rings unless they
are broken, cracked, or no longer securely hooked
together.
Inspect the input shaft splines and machined sur-
faces. Very minor nicks or scratches can be smoothed
off with crocus cloth. replace the shaft if the splines
are damaged, or any of the machined surfaces are
severely scored.
Replace the clutch discs if warped, worn, scored,
burned/charred, the lugs are damaged, or if the fac-
ing is flaking off.
Replace the steel plates and the pressure plate if
heavily scored, warped, or broken. Be sure the driv-
ing lugs on the discs and plates are also in good con-
dition. 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
steel plates should slide freely in the slots. Replace
the retainer if the grooves are worn or damaged. Also
check action of the retainer check ball. The ball must
move freely and not stick.
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 damaged.
Check thrust washer condition. Washer thickness
should be 1.55 to 1.60 mm (0.061 to 0.063 in.).
Replace the washer if worn or damaged.
Check condition of the two seal rings on the input
shaft and the single seal ring on the piston retainer
hub. Replace the seal rings only if severely worn,
cracked, or cannot be hooked together.
PLANETARY GEARTRAIN/OUTPUT SHAFT
Clean the intermediate shaft and planetary compo-
nents in solvent and dry them with compressed air.
Inspect the planetary gear sets and annulus gears.
The planetary pinions, shafts, washers, and retaining
Fig. 310 Checking Pump Gear Tip Clearance
1 – FEELER GAUGE
2 – INNER GEAR
3 – OUTER GEAR
DN
46RE AUTOMATIC TRANSMISSION
21 - 307
CLEANING AND INSPECTION (Continued)
pins are serviceable. However, if a pinion carrier is
damaged, the entire planetary gear set must be
replaced as an assembly.
Replace the annulus gears if the teeth are chipped,
broken, or worn, or the gear is cracked. Replace the
planetary thrust plates and the tabbed thrust wash-
ers if cracked, scored or worn.
Inspect the machined surfaces of the intermediate
shaft. Be sure the oil passages are open and clear.
Replace the shaft if scored, pitted, or damaged.
Inspect the sun gear and driving shell. If either
component is worn or damaged, remove the sun gear
rear retaining ring and separate the sun gear and
thrust plate from the driving shell. Then replace the
necessary component.
Replace the sun gear as an assembly if the gear
teeth are chipped or worn. Also replace the gear as
an assembly if the bushings are scored or worn. The
sun gear bushings are not serviceable. Replace the
thrust plate if worn, or severely scored. Replace the
driving shell if distorted, cracked, or damaged in any
way.
Replace all snap rings during geartrain assembly.
Reusing snap rings is not recommended.
OVERDRIVE UNIT
Clean the geartrain and case components with sol-
vent. Dry all parts except the bearings with com-
pressed air. Allow bearings to air dry.
Do not use shop towels for wiping parts dry unless
the towels are made from a lint-free material. A suf-
ficient quantity of lint (from shop towels, cloths, rags,
etc.) could plug the transmission filter and fluid pas-
sages.
Discard the old case gasket and seals. Do not
attempt to salvage these parts. They are not reus-
able. Replace any of the overdrive unit snap rings if
distorted or damaged.
Minor nicks or scratches on components can be
smoothed with crocus cloth. However, do not attempt
to reduce severe scoring on any components with
abrasive materials. Replace severely scored compo-
nents; do not try to salvage them.
Check condition of the park lock components and
the overdrive case.
Replace the case if cracked, scored, or damaged.
Replace the park lock pawl, plug, or spring if worn or
damaged. Be sure the bullet at the end of the park
lock rod is in good condition. Replace the rod if the
bullet is worn or the rod itself is bent or distorted.
Do not attempt to straighten the rod.
Check the bushings in the overdrive case. Replace
the bushings if severely scored or worn. Also replace
the case seal if loose, distorted, or damaged.
Examine the overdrive and direct clutch discs and
plates. Replace the discs if the facing is worn,
severely scored, or burned and flaking off. Replace
the clutch plates if worn, heavily scored, or cracked.
Check the lugs on the clutch plates for wear. The
plates should slide freely in the drum. Replace the
plates or drum if binding occurs.
Check condition of the annulus gear, direct clutch
hub, clutch drum and clutch spring. Replace the gear,
hub and drum if worn or damaged. Replace the
spring if collapsed, distorted, or cracked.
Be sure the splines and lugs on the gear, drum and
hub are in good condition. The clutch plates and
discs should slide freely in these components.
Inspect the thrust bearings and spring plate.
Replace the plate if worn or scored. Replace the bear-
ings if rough, noisy, brinnelled, or worn.
Inspect the planetary gear assembly and the sun
gear and bushings. If either the sun gear or the
bushings are damaged, replace the gear and bush-
ings as an assembly. The gear and bushings are not
serviced separately.
The planetary carrier and pinions must be in good
condition. Also be sure the pinion pins are secure and
in good condition. Replace the carrier if worn or dam-
aged.
Inspect the overrunning clutch and race. The race
surface should be smooth and free of scores. Replace
the overrunning clutch assembly or the race if either
assembly is worn or damaged in any way.
Inspect the output shaft and governor components.
Replace the shaft pilot bushing and inner bushing if
damaged. Replace either shaft bearing if rough or
noisy. Replace the bearing snap rings if distorted or
cracked.
Check the machined surfaces on the output shaft.
These surfaces should clean and smooth. Very minor
nicks or scratches can be smoothed with crocus cloth.
Replace the shaft if worn, scored or damaged in any
way.
Inspect the output shaft bushings. The small bush-
ing is the intermediate shaft pilot bushing. The large
bushing is the overrunning clutch hub bushing.
Replace either bushing if scored, pitted, cracked, or
worn.
ADJUSTMENTS
TRANSMISSION THROTTLE VALVE CABLE
ADJUSTMENT
The transmission throttle valve is operated by a
cam on the valve body throttle lever. The throttle
lever is actuated by a cable connected to the engine
throttle body lever (Fig. 311). A retaining clip at the
engine-end of the cable is removed to provide for
cable adjustment. The retaining clip is then installed
21 - 308
46RE AUTOMATIC TRANSMISSION
DN
CLEANING AND INSPECTION (Continued)
back onto the throttle valve cable to lock in the
adjustment.
A correctly adjusted throttle valve cable, will cause
the throttle lever on the transmission to move simul-
taneously with the throttle body lever from the idle
position. Proper adjustment allows simultaneous
movement without causing the transmission throttle
lever to move ahead of, or lag behind the throttle
body lever.
THROTTLE VALVE CABLE ADJUSTMENT CHECK
(1) Turn ignition key to OFF position.
(2) Remove air cleaner.
(3) Slide cable off attachment stud on throttle body
lever (Fig. 311).
(4) Verify that throttle body lever is at curb idle
position. Then verify that transmission throttle lever
is also at idle (full forward) position.
(5) Compare position of cable end to attachment
stud on throttle body lever:
(a) Cable end and attachment stud should be
aligned (or centered on one another) to within 1
mm (0.039 in.) in either direction.
(b) If cable end and attachment stud are mis-
aligned (off center), cable will have to be adjusted
as described in following procedure.
(6) Reconnect cable end to attachment stud. Then
with aid of a helper, observe movement of transmis-
sion throttle lever and lever on throttle body.
(a) If both levers move simultaneously from idle
to half-throttle and back to idle position, adjust-
ment is correct.
(b) If transmission throttle lever moves ahead of,
or lags behind throttle body lever, cable adjustment
will be necessary. Or, if throttle body lever pre-
vents transmission lever from returning to closed
position, cable adjustment will be necessary.
THROTTLE VALVE CABLE ADJUSTMENT PROCEDURE
(1) Turn ignition switch to OFF position and shift
into Park.
(2) Remove air cleaner.
(3) Disconnect cable end from attachment stud on
throttle body. Carefully slide cable off stud. Do
not pull or pry cable off.
(4) Verify that transmission throttle lever is in idle
(full forward) position. Then be sure lever on throttle
body is at curb idle position.
(5) Insert a small screwdriver under edge of
retaining clip and remove retaining clip.
(6) Center cable end on attachment stud to within
1 mm (0.039 in.).
NOTE: Be sure that as the cable is pulled forward
and centered on the throttle lever stud, the cable
housing moves smoothly with the cable. Due to the
angle at which the cable housing enters the spring
housing, the cable housing may bind slightly and
create an incorrect adjustment.
(7) Install retaining clip onto cable housing.
(8) Check cable adjustment. Be sure transmission
throttle lever and lever on throttle body move simul-
taneously and as described in cable adjustment
checking procedure.
GEARSHIFT CABLE
Check adjustment by starting the engine in Park
and Neutral. Adjustment is OK if the engine starts
only in these positions. Adjustment is incorrect if the
engine starts in one but not both positions. If the
engine starts in any position other than Park or Neu-
tral, or if the engine will not start at all, the park/
neutral position switch may be faulty.
Gearshift Adjustment Procedure
(1) Shift transmission into Park.
(2) Release cable adjuster lock (underneath the
power brake booster) (Fig. 312) to unlock cable.
(3) Raise vehicle.
(4) Slide cable eyelet off transmission shift lever.
(5) Verify transmission shift lever is in Park
detent by moving lever fully rearward. Last rearward
detent is Park position.
Fig. 311 Throttle Valve Cable Attachment —At
Engine
1 – THROTTLE VALVE CABLE
2 – CABLE BRACKET
3 – THROTTLE BODY LEVER
4 – ACCELERATOR CABLE
5 – SPEED CONTROL CABLE
DN
46RE AUTOMATIC TRANSMISSION
21 - 309
ADJUSTMENTS (Continued)
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст