Isuzu Rodeo UE. Manual — part 493
7B–4
MANUAL TRANSMISSION
TREMEC T5R Transmission
A07RS031
The TREMEC T5R (77 mm 5 speed) is a constant mesh
transmission, synchronized in all speeds except reverse.
The main components are:
1. Input shaft gear.
f
An integral shaft is splined to engage with the clutch
driven plate.
f
The gear drives the countergear.
f
A tapered roller bearing supports the shaft in case.
2. Countershaft gear.
f
The countershaft gear is one unit for constant
rotation with the input shaft gear.
f
Tapered roller bearings support the countershaft
gear in the case.
f
Thrust washer limits the play of the countershaft
gear.
f
An extra gear is mounted to the countershaft gear
for 5th speed.
3. Mainshaft.
f
The drive gears rotate freely on the mainshaft and
are in constant mesh with countershaft gear.
f
Key-type synchronizers engage the gears.
f
The 1st and 2nd synchronizer hub is machined in
place.
f
A tapered roller bearing supports the mainshaft in
the rear of the case.
f
Roller bearings support the mainshaft
independently in the input shaft gear.
f
The input shaft gear and mainshaft are engaged by
a synchronizer for direct drive in top gear.
f
Thrust washers limit the play of the mainshaft.
4. Reverse idler gear.
f
The idler gear drives the mainshaft in reverse.
f
The idler gear is supported on its own shaft.
f
A reverse brake feature brakes the countershaft
gear in the reverse shift sequence.
5. Shift lever.
f
The shift lever is mounted on the extension housing
and holds the offset lever.
f
The shift lever moves the shaft which is mounted in
the transmission top cover.
f
Shift forks mounted on shaft move the
synchronizers to engage the gears.
f
A pin-type interlock blocks the other forks when one
is moved.
MANUAL TRANSMISSION
7B–5
Diagnosis (MUA)
Condition
Possible cause
Correction
Abnormal noise
Flywheel pilot bearing worn
Replace
Bearings worn or broken (Mainshaft,
counter shaft, and transfer shaft)
Replace
Gear tooth contact surfaces worn or
scuffed (Mainshaft, counter shaft,
reverse idler gear and transfer gears)
Replace
Splines worn (Mainshaft,
synchronizer clutch hub)
Replace
Gear or bearing thrust face seized
Replace
Lack of backlash between meshing
gears
Replace
Hard Shifting
Improper clutch pedal free play
Readjust
Change lever sliding portions worn
Repair or replace Regrease
Shift block, shift rod and/or control
box sliding faces worn
Replace
Shift arm and synchronizer sleeve
groove worn
Replace worn parts
Thrust washer, collar, and/or gear
thrust faces worn (Mainshaft and
counter shaft thrust play)
Replace worn parts
Synchronizer parts worn
Replace
Walking or Jumping out of gear
Detent ball worn
Replace
Detent spring weakened or broken
Replace
Shift rod and/or control box sliding
faces worn
Replace
Shift arm and synchronizer sleeve
groove worn
Replace worn parts
Thrust washer, collar, and/or gear
thrust faces worn (Mainshaft and
counter shaft thrust play)
Replace worn parts
Bearings worn or broken
Replace
Splines worn (Mainshaft,
synchronizer hub)
Replace
Synchronizer spring weakened or
broken
Replace
Oil leakage
Loose drain plug(s) and/or filler
plug(s)
Tighten Replenish oil
Defective or improperly installed
gasket(s)
Replace
Oil seal worn or scratched
Replace
7B–6
MANUAL TRANSMISSION
Diagnosis (TREMEC T5R)
F07RX003
MANUAL TRANSMISSION
7B–7
Rear Oil Seal (4X2)
Disassembled View
220RW042
Legend
(1) Rear Propeller Shaft
(2) Rear Oil Seal (MUA)
(3) Rear Oil Seal (TREMEC T5R)
Removal
1. Raise and support vehicle with suitable jack stands.
2. Remove propeller shaft flange yoke bolts and nuts at
the differential side.
Remove propeller shaft from the transmission main
shaft spline.
3. Use a screwdriver to pry the rear oil seal from the rear
cover(MUA) or extension housing(TREMEC T5R).
Installation
1. Install a new oil seal(2) or (3) using the installer
J–29769 (MUA) or J–38763 (TREMEC T5R).
220RS044
2. Insert the splined yoke into the transmission
mainshaft spline.
3. Install the propeller shaft flange yoke to the drive
pinion flange.
Torque: 63 N·m (46 lb ft)
4. Check transmission fluid level.
5. Lower vehicle.
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст