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AJ-V8/5HP24
66
Transmission
Tecnical Data
Transmission weight
including fluid and
torque converter 95.8 kg (211 lbs)
Oil Type ATF Esso LT71141
Oil Capacity 10 liters (2.645 US. gals)
Gear Ratios 1st Gear 3.571:1
2nd Gear 2.202:1
3rd Gear 1.505:1
4th Gear 1.000:1
5th Gear 0.803:1
Reverse 4.095:1
Gearshifting
Driver gear selection is transmitted from the gear
selector lever by cable to a lever fitted to a
selector shaft in the transmission casing. This
shaft moves the manual valve and the rotary
switch. The rotary switch signals all gear
positions except D to 4. A separate switch in the
driver gear selector mechanism detects
movement of the selector between D and 4. The
communication of driver gear selection to the
TCM is made by the rotary switch. Gear shift
points are selected by the TCM in response to
output speed, engine load, selector position,
accelerator pedal position and driver mode
selection. Driver control of the shifting is via the
selector lever, throttle pedal position, kickdown
switch and mode switch. Two shift modes are
available, sport and normal, controlled by the
driver from a switch on the gear selector
surround. During kickdown, gear upshifts occur at
6800 RPM engine speed.
Mechanical Description
The unit is an oil filled-for-life system therefore no
dipstick is fitted to the transmission. A filling/level
plug is located at the right-hand side rear of the
casing for service oil level checking and
replenishment, if required. To achieve effective
cooling, the oil is pumped from the transmission
casing at the front left-hand side of the casing to
the car mounted oil cooler. The oil is returned
from the cooler to the inlet connection on the
front right-hand side of the casing. The cooler is a
plate-type design made from aluminum and is
located in the car radiator outlet tank. To detect
changes in oil viscosity which occur as the oil
temperature changes, an oil temperature sensor
is located in the unit casing sump. Also located
in the transmission casing are the input shaft
speed sensor (turbine speed) and output shaft
speed sensor (vehicle speed). The torque
converter is a lightweight unit which, because of
its low mass, improves engine responsiveness.
The torque converter bell housing is bolted to the
transmission casing. Mounting of the
transmission is conventional by bolting the torque
converter bell housing to the engine. The rear
extension housing is bolted to the transmission
casing and forms the rear engine/transmission
mounting point. It also carries the output shaft oil
seal.
The electro-hydraulic module contains three
solenoid valves and five pressure regulators for
gear shifting. Each of the three solenoid valves
control the flow of transmission fluid to the
selected clutches. One pressure regulator serves
as master pressure control for the entire system
and one is used exclusively for torque converter
clutch lock-up operation.
Replacement transmission units are shipped
complete with the torque converter and housing,
extension housing, coupling flange and rotary
position switch. They are also fully filled with
10 liters (2.645 US. gals) of oil. Consequently,
when undertaking a transmission replacement,
oil replenishment should not be necessary. The
exterior of the transmission is coated with a non-
drip corrosion protection oil, which must not be