torque ISUZU AXIOM 2002 Service Repair Manual

7A±23 AUTOMATIC TRANSMISSION (4L30±E)
Stall Test
The stall test allows you to check the transmission for
internal abrasion and the one way clutch for slippage.
Torque converter performance can also be evaluated.
The stall test results together with the road test results will
identify transmission components requiring servicing or
adjustment.
Stall Test Procedure:
1. Check the level of the engine coolant, the engine oil,
and the automatic transmission fluid. Replenish if
necessary.
2. Block the wheels and set the parking brake.
3. Connect a tachometer to the engine.
4. Start the engine and allow it to idle until the engine
coolant temperature reaches 70 ± 80
C (158 ±
176
F).
5. Hold the brake pedal down as far as it will go.
6. Place the selector in the ªDº range.
7. Gradually push the accelerator pedal to the floor.
The throttle valve will be fully open.
Note the engine speed at which the tachometer
needle stabilizes.
Stall Speed : 2,100 +150 rpm
NOTE: Do not continuously run this test longer than 5
seconds.
8. Release the accelerator pedal.
9. Place the selector in the ªNº range.
10. Run the engine at 1,200 rpm for one minute.
This will cool the transmission fluid.
11. Repeat Steps 7 ± 10 for the ª3º, ª2º, ªLº and ªRº
ranges.
Line Pressure Test
The line pressure test checks oil pump and control valve
pressure regulator valve function. It will also detect oil
leakage.
Line Pressure Test Procedure:
1. Check the level of the engine coolant, the engine oil,
and the automatic transmission fluid.
Replenish if required.
2. Block the wheels and set the parking brake.
3. Remove the pressure detection plug at the left side of
the transmission case.
Set J±29770±A pressure gauge and adapter to the
pressure detection plug hole.
241RS001
4. Start the engine and allow it to idle until the engine
coolant temperature reaches 70 ± 80
C (158 ±
176
F).
5. Hold the brake pedal down as far as it will go.
6. Place the selector in the ªDº range.
7. Note the pressure gauge reading with the engine
idling.
8. Gradually push the accelerator pedal to the floor. The
throttle valve will be fully open.
Note the pressure gauge reading with the accelerator
pedal fully depressed.
NOTE: Do not continuously run this test longer than 5
seconds.
9. Release the accelerator pedal.
10. Place the selector in the ªNº range.
11. Run the engine at 1,200 rpm for one minute.
This will cool the transmission fluid.
12. Repeat Steps 7 ± 11 for the ª3º, ª2º, ªLº, and ªRº
ranges.
13. Install a pressure detection plug to the transmission
case, applying recommended thread locking agent
(LOCTITE 242) or its equivalent to thread of plug.
Make sure that thread is cleaned before applying
locking agents.
14. Tighten the pressure detection plug to the specified
torque.
Torque: 9 ± 14N´m (7 ± 10lb ft)

7A±27 AUTOMATIC TRANSMISSION (4L30±E)
Changing Transmission Fluid
There is no need to change the transmission fluid unless
the transmission is used under one or more of the
following heavy duty conditions.
A. Repeated short trips
B. Driving on rough roads
C. Driving on dusty roads
D. Towing a trailer
If the vehicle is used under these conditions, change the
fluid every 20,000 miles (32,000 km).
1. Place a large drain pan under the oil pan.
2. Remove the transmission oil drain screw (2) and drain
fluid.
3. Tighten drain screw (2).
Torque: 38 Nwm (28 lb ft)
4. Remove the transmission overfill screw (1) and fill
transmission through overfill screw opening, using
DEXRON)±III ATF.
NOTE: Add transmission fluid until it flows out over the
overfill screw opening.
5. Let engine idle until a fluid temperature between 32
C
(90
F) and 57
C (135
F) is reached.
6. Add transmission fluid until it flows out over the overfill
screw opening, then close the overfill screw (1).
Torque: 38 Nwm (28 lb ft)NOTE: To prevent fluid leaks, the overfill screw and oil
drain screws gasket must be replaced each time these
screws are removed.
NOTE: Check transmission fluid temperature with scan
tool.
7. Reset ªOil Life Monitorº data by using Tech 2.
Refer to
Tech 2 OBD II Connection in Transmission
Control System (4L30-E) section.
242R200001
Selector Lever
Inspection
1. Make sure that when the selector lever is shifted from
ªPº to ªLº, a ªclickingº can be felt at each shift position.
Make sure that the gear corresponds to that of the
position plate indicator.
2. Check to see if the selector lever can be shifted as
shown in illustration.
C07RW009
Removal
1. Disconnect battery ground cable.
2. Set ignition Key in ªLOCKº position and selector lever
in ºPº position.
3. Remove knee pads (1), cluster upper cover (2) and
center cluster assembly (3).
740R200021

7A±36
AUTOMATIC TRANSMISSION (4L30±E)
Installation
To install, follow the removal steps in the reverse order,
noting the following points;
1. Torque
Mode switch bolt: 13 Nwm (113 lb in)
Selector lever nut: 23 Nwm (17 lb ft)
2. Mode switch setting procedure
Perform either of the following adjustment
procedures:
Procedure 1
a. Place selector lever in neutral.
b. Remove selector lever from the mode switch.
c. Remove the mode switch cover.
d. Loosen the two 10 mm screws.
e. Rotate the mode switch until the slot in the mode
switch housing aligns with the selector shaft
bushing, and insert a 3/32 in. (2.4 mm) drill bit or
punch (1) into the slot.
f. Tighten the screws to 13 N´m (113 lb in).
g. After completing adjustment, snap the mode
switch cover into place.
h. Reinstall the selector lever.
249RW001
Procedure 2
a. Place selector lever in neutral.
b. Disconnect transmission harness connector from
mode switch connector.
c. Remove mode switch connector with bracket from
the transmission case.
d. Connect multimeter (resistance mode) to
terminals 1(E) and 4(H) on mode switch connector.
e. Loosen two mounting screws.
f. Rotate mode switch slightly in both directions to
determine the range (approx. 5 degrees) of
electrical contact.
g. Position mode switch in middle of contact range.
h. Tighten two mounting screws.i. Remove multimeter and install mode switch
harness connector with bracket to the
transmission case.
j. Connect transmission harness connector to mode
switch connector.
F07RW003

7A±37 AUTOMATIC TRANSMISSION (4L30±E)
Transmission Assembly
Transmission and Associated Parts
240R200005
Legend
(1) Fairing Plate
(2) Transfer Protector (4y4)
(3) Under Cover
(4) Front Propeller Shaft (4y4)
(5) Transmission Oil Cooler Pipe
(6) Select Cable
(7) Rear Propeller Shaft (4y2)
(8) Rear Propeller Shaft (4y4)
(9) Rear Mount Rubber and Propeller Protector
Assembly (4y2)
(10) Fuel Pipe
(11) Fuel Pipe Heat Protector(12) Third Crossmember (4y4)
(13) Third Crossmember (4y2)
(14) Center Exhaust Pipe (4y4)
(15) Starter
(16) Harness Heat Protector
(17) Torque Converter Bolt
(18) Engine-Transmission Bolt
(19) Rear Mount Nut (4y4)
(20) Rear Mount Nut (4y2)
(21) Harness Connector
(22) Transmission Assembly with Transfer
Assembly (4y4)
(23) Transmission Assembly (4y2)

7A±42
AUTOMATIC TRANSMISSION (4L30±E)
14. Loosen oil cooler pipe clamp bolt at the engine mount
side.
(4y4)
253RY001
15. Remove select cable by disconnecting inner cable
from select lever and removing outer cable with
bracket.
256RW025
16. Remove starter.
17. Remove under covers from the transmission and
engine.18. Remove flex plate torque converter fixing bolts (6
pieces) by turning crankshaft.
240RX010
19. Remove engine transmission fixing bolts.
20. Pull out transmission assembly from the engine.
21. Remove the rear mount rubber and propeller
protector assembly if required (4y2).

7A±43 AUTOMATIC TRANSMISSION (4L30±E)
Installation
1. Slowly raise transmission jack until front of the
transmission assembly is aligned with rear of the
engine. Attach the transmission assembly to the
engine.
2. Tighten engine transmission bolts as shown in the
figure.
F07R200004
3. Align the flex plate torque converter bolt boss with flex
plate hole by turning the torque converter. Install flex
plate torque converter bolts (6 pieces) by turning the
crankshaft.
Torque: 54 Nwm (40 lb ft)
NOTE: Do not reuse the flex plate torque converter bolt.
240RX010

7A±44
AUTOMATIC TRANSMISSION (4L30±E)
4. Install under covers to the transmission and engine.
5. Install starter.
Torque: 40 Nwm (30 lb ft)
6. Install select cable by connecting inner cable to select
lever and installing outer cable with bracket.
256RW025
7. Connect transmission oil cooler pipes to A/T.
Torque: 44 Nwm (33 lb ft)
8. Install oil cooler pipe clamp and bracket to the
converter housing.
(4y4)
253RY001
9. Tighten oil cooler pipe clamp bolt at the engine mount
side.10. Install third crossmember.
Torque: 116 Nwm (85 lb ft)
11. Install rear mount nuts.
Torque: 50 Nwm (37 lb ft)
(4y4)
F07RW008
(4y2)
F07R100005

7A±45 AUTOMATIC TRANSMISSION (4L30±E)
12. Install harness heat protector.
Torque: 6 Nwm (52 lb in)
815RW002
13. Connect transmission harness connector and clip.
Connector : Adapter case, mode switch, main case,
magnetic sensor, transfer connectors (4y4) and car
speed sensor.
14. Connect fuel pipe bracket to transmission side.
NOTE: See ªNOTEº of removal steps.
141R200003
(4y4)
240R200010
(4y2)
141R200002

7A±46
AUTOMATIC TRANSMISSION (4L30±E)
15. Install fuel pipe heat protector and clip.
16. Connector fuel pipe bracket to third crossmember.
141RW004
17. Install center exhaust pipe (4y4).
Torque: 43 Nwm (32 lb ft)
18. Install front propeller shaft (4y4) and rear propeller
shaft.
Torque: 63 Nwm (46 lb ft)
19. Install transfer protector (4y4) and fairing plate.
Torque (transfer protector bolt): 37 Nwm (27 lb ft)
150R200001

7A±47 AUTOMATIC TRANSMISSION (4L30±E)
Solenoid (Main Case Valve Body)
Removal
1. Raise the vehicle and support it on jack stands.
2. Disconnect battery ground cable.
3. Remove transfer protector (4y4).
4. Drain fluid.
5. Support transfer case with a jack and remove third
crossmember.
6. Remove sixteen 10 mm screws, main case oil pan,
magnet, and gasket.
7. Remove three 13 mm screws, oil filter.
8. Disconnect wiring harness from band control
solenoid and shift solenoids. Pull only on connectors,
not on wiring harness.
9. Remove spring pin for shift solenoid A, shift solenoid
B, and band control solenoid respectively, using
suitable pliers taking care not to damage solenoids.
210RW010
244RW003
10. Remove shift solenoid A, shift solenoid B, band
control solenoid, and gaskets from main case valve
body. Do not pull on wiring harness. Remove
solenoids by grasping the metal tip.
Installation
1. Install shift solenoid A, shift solenoid B, band control
solenoid with new gaskets to main case valve body
respectively.
2. Carefully install spring pin with hammer to avoid
damage to valve body, etc.
243RW004
3. Connect wiring harness to solenoids.
4. Install oil filter with a new gasket and the three 13 mm
screws. Tighten the screws to the specified torque.
Torque: 20 Nwm (15 lb ft)
5. Install magnet, main case oil pan with new gasket,
sixteen 10 mm screws. Tighten the screws to the
specified torque.
Torque: 11 Nwm (96 lb in)
6. Install third crossmember and rear mount nuts.
Tighten the nuts and bolts to the specified torque.
Third crossmember bolt: 116 Nwm (85 lb ft)
Rear mount nut: 50 Nwm (37 lb ft)
7. Install the transfer protector. Tighten the bolts to the
specified torque (4y4).
Torque: 37 Nwm (27 lb ft)
8. Fill transmission through the overfill screw hole of oil
pan, using ATF DEXRON)±III. Refer to
Changing
Transmission Fluid in this section.
9. Connect the battery ground cable.