Chapter 7 Automatic Transaxle AssemblySection 1 Frequent Problems DiagnosisPossible Cause1. There is no scan information.
(1)The diagnosis system fails.
(2)The automatic transmission unit fails.
2. The engine can't start.
(1)The engine system fails.
(2)The fuel pump or torque meter fails.
3. The vehicle cant' runs forwards.
(1)The circuit voltage is improper.
(2)The rear clutch or single clutch fails.
(3)The valve fails.
4. The vehicle can't run backwards.
(1)The low speed brake or front clutch pressure is improper.
(2)The front clutch or low speed reverse gear fails.
(3)The valve fails.
5. The vehicle can't runs forwards or backwards.
(1)The pressure deduction is improper or the transmission signal fails.
(2)There is pressure in the oil pump or the valve body fails.
6. The engine stalls in gear shift.
(1)The engine system or clutch torque meter fails.
(2)The valve body or torque meter fails.
7. The vehicle vibrates and lasts for a long time when the gear is shifted from N to D.
(1)The rear clutch fails.
(2)The valve body clutch fails.
(3)The restrictor switch fails.
8. The vehicle vibrates and lasts for a long time when the gear is shifted from N to R.
(1)The front clutch pressure fails.
(2)The front clutch or valve body fails.
(3)The low speed reserve gear pressure or low speed reverse gear fails.
9. The vehicle vibrates and lasts for a long time when the gear is shifted from N to D/R.
(1)The pressure reduction fails.
(2)The oil pump fails.
(3)The valve body fails.
10. The gear shift impacts.
(1)The servo switch or restrictor position switch fails.
(2)The pressure is decreases abnormally.
(3)The clutch or brake fails.
11. All gear shift points are either too early or too late in the running status.Automatic Transaxle Assembly Frequent Problems Diagnosis3-29 -
The valve body fails.
12. The vehicle shifts before or after some gear points in the running status.
The vehicle switch or parking switch fails.
13. The vehicle has poor acceleration in running.
(1)The clutch or brake fails.
(2)The engine system fails.
14. The vehicle vibrates when it runs at a constant speed or accelerating speed.
(1)The hydraulic torque clutch pressure or hydraulic torque meter fails.
(2)The engine system or valve fails.
15. The acceleration switch system fails.
(1)The acceleration switch or ignition switch fails.
(2)The connector or automatic transmission control unit fails.I. Automatic transmissions Removal1. Put the select lever in "N" position
2. Remove 3 bolts of the flexibility plate (engine side)
3. Remove starter and 2 cooling hoses.
4. Disconnect neutral switch connector and odometer sensor.
5. Loosen the drain screw under the housing to bleed ATF and tighten the drain screw with sealing glue when
assembling. Tightening torque is 29~35N.m
6. Loosen the locking bolt for select lever cable.
7. Remove Drive Shaft LH&RH, using plastic stopper in the oil sealing of differential.
8. Detach suspension bolts.
9. Separate transmission from engine after bolts between engine and transmission remove.II. Automatic Transmission Installation1. Check whether torque converter of the transmission is in the right position, the methods as follows:
Check whether the distance from 3 anchor point of torque converter to front contact face of the transmission
box A 28mm , If the space A<28 mm, try install again. The way to install is that left hand catch hold of the
central anchor column of the converter and make it in alignment with input shaft as near as possible, push the torque
converter in rotating way by right hand until it gets to the bottom to meet the requirement of A 28 mm. (See
figure 7-1 and 2)
2. Install Flexibility plate and central plate on the crankshaft end face with 6 bolts in the direction of Figure 2.
Tightening torque is 45~55 N.m. Turn the longer hole of the Flexibility plate to the lowest of the engine position
in order to connect torque converter.Section 2 Hydraulic Torque Converter and TransaxleAutomatic Transaxle Assembly Hydraulic Torque Converter and Transaxle3-30 -
9. Put shift lever to "N" position, meanwhile, adjust the shift fork in
neutral position. Connect shift cable with bracket and fix by fastening
bolt. The tightening torque is 6.9~13.7 N.m (See figure 7-6).
10. Connect neutral switch connector.
11. Install odometer sensor (connect the sensor with the actuator of
odometer in the transmission)Figure 7-712. Fill in ATF.
"ATF " is the oil only for automatic transmission, its grade is DEXRONII or DEXRONIII. First, take
dipstick out of automatic transmission and fill in 3 liter ATF from dipstick pipe. Put select lever to "P" position
and start engine until AT temperature is up to 80°C, and then put select lever in "P" "R" "N" "D"
"2" "L" and "L" "2" "D" "N" "R" "P" step by step. Insert and take out dipstick,
wipe out the liquid in the dipstick. Repeat above-mentioned procedure without wiping to check oil level by
dipstick. If oil level is between the third and fourth hole in the dipstick, the level is normal. Filling in oil is over
and Insert dipstick tightly.
13. Wipe ATF in the A/T surface when filling.
14. A/T installation is completed.3-32Install in the engineCentral PlateFlexible Plate SetThrottle cableDipsitickFilling
PipeFluid Pan Hydraulic Torque
CorverterIII. Automatic Transmission Assembly JL-Z110 and JL-Z130Figure 7-6Automatic Transaxle Assembly Hydraulic Torque Converter and Transaxle -
Figure 7-93-33Replacement1. Discharge the automatic transmission oil.
(1) Remove the discharge plug and washer to discharge the ATF oil.
(2) Install the discharge plug and new washer.
Torque: 25N.m
2. Remove the front wheel.
3. Remove the left/right front wheel hub nuts.
4. Unfix the front stabilizer bar.
5. Unfix #1 left/ring front suspension sub-assembly.
6. Unfix the left/right ball extension rod sub-assembly.
7. Unfix the left/right front axles.
8. Remove the differential front oil seal (on the transaxle housing).Section 3 Differential Front Oil Seal (ATM)1. Check the hydraulic torque converter assembly.
(1)Measure the status of the hydraulic torque converter.
(2)Replace the ATF in the hydraulic torque converter.
(3)Wash and check oil freezer and oil pipe.
(4)Prevent the hydraulic torque converter being deformed and
the oil pump gear being damaged.
2. Check the drive disc and gear ring.
(1)Install a dial test indicator to measure the runout of the drive
disc. (See Fig.7-8)
(2)Check the damage of the gear ring.
Maximum runout: 0.25mm
If the runout is beyond the specified scope or the gear ring is
damaged, replace the drive disc.
Torque: 64N.m
3. Check the hydraulic torque converter. (See Fig.7-9)
Install the hydraulic torque converter on the drive disc temporarily,
and install a test indicator to measure the radial runout of the
hydraulic torque converter bushing.
Maximum radial runout: 0.20mm
If the radial runout is beyond the specified scope, readjust the
direction of installation.
Notes:
Mark the position of the torque converter to install it properly.
Remove the hydraulic torque converter.Figure 7-8Automatic Transaxle Assembly Differential Front Oil Seal (ATM) -
9. Pull out oil seal (on the transaxle housing) with a special tool.
(See Fig.7-10)
10. Remove the differential front oil seal on the transmission housing.
Pull out the oil seal on the transmission housing with a special
tool. (See Fig.7-11)
11. Install the differential front oil seal onto the transmission housing.
(1) Install a new oil seal on the transmission housing with a
special tool and hammer. (See Fig.7-12)
(2) Apply MP lube on the flange of the oil seal.
12. Install the differential front oil seal onto the transmission housing.
(1) Install a new oil seal onto the transmission housing with a
special tool and hammer. (See Fig.7-13)
(2) Apply MP lube on the flange of the oil seal.Figure 7-10
Figure 7-11
Figure 7-12Figure 7-13Automatic Transaxle Assembly Differential Front Oil Seal (ATM)3-3413. Install all parts in the sequence of removal till the front wheel is installed, and then add transmission oil.
14. Check and adjust the alignment of the front wheel. -
Overhaul1. Drain manual transmission oil (M/T transmission)
Torque: 39N.m
2. Drain automatic transmission oil (A/T transmission)
Torque: 25N.m
3. Remove front wheel
4. Remove engine bottom left shield (M/T transaxle)
5. Remove engine bottom right shield (M/T transaxle)
6. Remove engine bottom shield assembly (A/T transaxle)
7. Remove front wheel hub left bolt
(1) Using a hammer and a drive shaft nut chisel, unstake the
staked part of the left wheel hub nut.
(2) While applying the brake pedal, remove the left wheel hub
nut.
Notice: the staked part of the nut should be fully unstaked,
otherwise it may damage the thread of the drive shaft.
8. Remove left front vehicle speed sensor (with ABS)
(1) Remove the bolt and clip, remove vehicle speed sensor and
brake hose from left front shock absorber assembly.
(2) Remove the bolt, separate the left front vehicle speed sensor
from steering knuckle.
9. Remove front stabilizer bar
(1) Use a 10mm wrench to hold the bolt, remove the nut
(2) Remove two collars, No.1 and No.2 gaskets, remove front
stabilizer barPropeller Shaft/DriveshaftFront Driveshaft4-21 -
Propeller Shaft/DriveshaftFront Driveshaft4-28 Hint:
Please refer to the following table for dimension (A).LH mm
528.3±5.0
527.0±5.0RH mm
859.3±5.0
860.0±5.0 M/T manual transmission
A/T automatic transmission38. Install left constant velocity drive shaft assembly
(1) M/T
Coat the spline of the tripod joint assembly with gear oil.
(2) A/T
Coat the spline of the tripod joint assembly with ATF
(Automatic Transmission Fluid).
(3) Align the spline, use a brass bar and hammer to install the left
drive shaft assembly.
Notice:
Face the retainer open end downward.
Be careful not to damage the boot and oil seal.
Hint:
You can find out whether the tripod joint shaft contact the pinion shaft by rotating the shaft assembly, listening
to the sound and feeling.
39. Install right constant velocity drive shaft assembly
Hint:
The installation of the right side is the same as that of the left side.
Notice:
Install the retainer with its open end facing downward.
Be careful not to damage the boot and oil seal.
40. Install left steering knuckle assembly
Install the left constant velocity drive shaft assembly on the left steering knuckle assembly.
Notice:
Be careful not to damage the outboard joint boot.
With ABS:
Be careful not to damage the vehicle speed sensor rotor.
41. Install left steering gear with tie rod assembly
(1) Install the steering gear with tie rod assembly on the steering knuckle assembly with nuts.
Torque: 33N.m
(2) Install the new cotter pins.
Notice:
If the pin holes are not aligned, further tighten the nut by 60°.
42. Install left lower swing arm assembly
(1) Install the left lower swing arm assembly on the steering knuckle assembly with nuts.
Torque: 98N.m -
Propeller Shaft/DriveshaftFront Driveshaft4-29 (2) Install the new cotter pins.
Notice:
If the pin holes are not aligned, further tighten the nut by 60°.
43. Install front stabilizer bar
(1) As shown in the illustration, install the stabilizer bar with two
No.1 collars and two gaskets and nuts.
Notice:
Make sure the gaskets and collars are correctly installed.
(2) Tighten the nut with a 10mm wrench.
Torque: 18N.m
44. Install left front vehicle speed sensor (with ABS)
(1) Install the left front vehicle speed sensor and brake hose on the
front shock absorber with bolts and clps.
Torque: 29N.m
(2) Install the vehicle speed sensor on the steering knuckle with
bolts.
Torque: 8.0N.m
Notice:
Be careful not to damage the wheel speed sensor.
Keep the vehicle speed sensor clean.
When installing the sensor,do not twist the sensor wire harness.
45. Install left steering knuckle wheel hub nut
(1) Install new left steering knuckle hub nuts
Torque: 216N.m
(2) Using a chisel and hammer, stake the hub locking nut.
46. Install engine bottom left shield
47. Install engine bottom right shield
48. Install engine bottom shield assembly
49. Install front wheel
Torque: 103 N.m
50. Add oil into manual transmission
51. Check and adjust the manual transmission fluid
52. Refill automatic transmission fluid
53. Check and adjust the automatic transmission fluid
54. Check and adjust front wheel alignment
55. Check ABS vehicle speed signal (with ABS) -