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Automatic Transmission/Transaxle - 4.0L SC V8 - AJ26 - Torque Converter
Disassembly and Assembly of Subassemblies
CAUTION: If the transmission is to be renewed, renew the to rque converter also.
Special Tool(s)
Torque converter lifting handles
307-139
1. Remove the transmission unit from the vehicle; refer to
Operation 44.20.01.
2. Remove the torque converter from the transmission unit.
Fit lifting handles 307 - 139 ( JD-105).
3. Remove lifting handles 307 - 139 (JD-105) from the torque
converter.
4. Clean the torque conver ter and mating faces.
5. CAUTIONS:
Use extreme care NOT to damage the oil seal with the
converter spigot.
Ensure that the conver ter is fully located.
Fit the torque converter.
1. Fit lifting handles 307 - 139 (JD-105).
2. Lubricate the front pump seal.
To facilitate location, rotate the converter as it is being
fitted and feel for the engage ment of the splines and of
the oil pump drive.
6. Check that the converter fixing boss faces are approximately
8,0 mm proud of the transm ission mounting face.
7. Remove the lifting handles from the torque converter.
8. Install the transmission unit; refer to Operation 44.20.01.
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Automatic Transmission/Transaxle - 4.0L SC V8 - AJ26 - Transmission
Installation
Installation
Special Tool(s)
Engine support
303-021
Engine lifting brackets
303-536
1. CAUTION: A new transmission requires a NEW torque
converter.
Installation is the re verse of the removal procedure, noting the
following:
2. Clean all mating faces and relevant parts.
3. Apply lubricant, MOLYCOTE or equivalent to the torque
converter spigot.
4. Fit the screw (lower) securing th e harness link lead heatshield.
Tighten to the specified torque figure.
5. Fit the dipstick lower tube.
Remove the blanking plug and fit a new O-ring seal.
Tighten the bolt to the specified torque figure.
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6. Fit the mounting bracket for th e front muffler. Tighten the two
bolts to the specified torque figure.
7. Secure the transmission to the engine.
Loosely assemble - Cooler pipe clip bolt.
Loosely assemble - Ground lead bolt.
Loosely assemble - Starter cable clips, two bolts.
Loosely assemble - Catalyst bracket bolts, two each side.
Loosely assemble - Rema ining eight bolts.
Refer to the illustration - tighten in sequence 1,2,3,4 then
in any order.
8. Secure the torque converter to the engine.
1. Fit, but do not tighten, the three bolts which secure the torque converter to the drive plate.
Prevent crankshaft rotation and tighten ALL converter
bolts to the specified torque figure.
2. Fit the blanking plug to the cylinder block access aperture.
9. Secure the oil cooler pipes.
Fit new Dowty washers to each union. Connect the upper
and lower cooler pipes.
Tighten to the specified torque figure.
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10. Refit the harness connector support bracket and tighten the
two bolts to the specified torque figure, noting that one fixing
also retains the di pstick upper tube.
11. Connect the selector cable. Ti ghten the bolts and one nut to
the specified torque figure.
12. Connect the driveshaft (prop-shaft) aligning the marks made
when it was removed. Tighten the bolts to the specified torque
figure.
13. Fit the rear crossmember. Tighten the bolts to the specified
torque figure.
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14. Refit the coolant header tank. Tighten to the specified torque
figure.
15. Fit the harness and clip (trans mission link harness) to the
rear of the cylinder head. Tighte n to the specified torque figure.
16. Refer to Operation 44.24.02 for fluid fill procedure.
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Transmission/Transaxle Cooling - 4.0L NA V8 - AJ27/3.2L NA V8 - AJ26 -
Transmission Cooling
Description and Operation
The transmission fluid cooling system maintains fluid temperature within specified limits.
Parts List
Component Descriptions
The transmission fluid pipes:
Transfer fluid from the transmission to the cooler under the action of the hydraulic system pump. Return the cooled fluid from th e cooler to the transmission.
The transmission fluid cooler:
Is a plate type made from aluminum. Is mounted in the engi ne cooling radiator right-hand end tank.
Overheating Protection
If the engine coolant or transm ission fluid temperatures exceed their predefined limits, th e transmission control module locks
the torque converter clutch. By reducing slip, this minimises th e amount of heat transferred to the engine cooling system from
the transmission fluid.
ItemPart NumberDescription
1—Fluid pipe, oil FROM cooler
2—Fluid pipe, oil TO cooler
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Transmission/Transaxle Cooling - 4.0L SC V8 - AJ26 - Transmission
Cooling
Description and Operation
The transmission fluid cooling system maintains the fluid temperature within specified limits. The cooling element is located
in the engine cooling radiator LH end tank.
Fluid is circulated, under pressure, by the transmission pump to the cooler.
General Layout
Overheating Protection
If the engine coolant or transmission fluid temperatures exceed their predefined limits, the transmission control module
locks the torque converter clutch . By reducing slip, this minimises the amount of heat transferred to the engine cooling
system from the transmission fluid.
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Automatic Transmission/Transaxle External Controls - 4.0L NA V8 -
AJ27/3.2L NA V8 - AJ26 - External Controls
Description and Operation
Introduction
Driver gearshift control is effected by:
The gear shift lever. The accelerator pedal position. The kickdown switch (where fitted). The performance mode pushbutton.
Driver's Selector Module ('J' Gate)
The gear selector lever:
Has seven positions: Park, Reverse, Neutral, Drive, Fourth, Third and Second. Operates the transmission selector shaft and rotary switch, in all positions (except Drive-to-fourth) by means of a
Bowden cable.
Passes driver gearshift requests to the transm ission control module via the rotary switch.
ItemPart NumberDescription
1—Gear selector lever
2—Drive-to-fourth switch connector
3—Neutral position switch connector
4—Park position switch connector
5—Gear selector illumination module
6—Gear selector interlock solenoid
7—Security system Active LED