SECTION 7 DRIVE TRAIN
Page 20
TD-25M EXTRA DRESSTA
SERVICE DIAGNOSIS
NOTE: Tag each test gauge to avoid confusion when performing these checks.
NOTE: The following pressure checks should be performed with the engine running at full throttle
and oil at operating temperature. To obtain operating temperature, shift to third forward with the
foot brake applied until the temperature gauge pointer reaches the high side. Then shift to neutral
until the temperature gauge pointer drops to the midpoint. Repeat this procedure until the midpoint
will be in green range
Transmission and Torque Converter Test Oil Pressure Chart
GEAR
RANGE
TEST PORT DESCRIPTION (All readings are given in [kPa])
MAIN
(M)
TORQUE CONV.
(C)
LUBE
(L)
(
*
)
RANGE CLUTCH
(PC)
DIRECT CLUTCH
(FR)
Neutral 1790 - 1930 790 - 930 280 - 450 0 0
Forward
First
1790 - 1930 790 - 930 240 - 350
M minus
100 - 170
M minus 0 - 70
Forward
Second
1790 - 1930 790 - 930 240 - 350
M minus
100 - 170
M minus 0 - 70
Forward
Third
1790 - 1930 790 - 930 240 - 350
M minus
100 - 170
M minus 0 - 70
Reverse
First
1790 - 1930 790 - 930 240 - 350
M minus
100 - 170
M minus 0 - 70
Reverse
Second
1790 - 1930 790 - 930 240 - 350
M minus
100 - 170
M minus 0 - 70
Reverse
Third
1790 - 1930 790 - 930 240 - 350
M minus
100 - 170
M minus 0 - 70
NOTE: With the engine running at low idle the M, PC and FR pressure readings are slightly less
than those shown in the above chart. However C and L pressure readings are much lower than
those shown in the above chart with the same conditions.
(
*
)
IMPORTANT: Additionally measure the L pressure with the engine running at low idle. Never
operate the machine, if the L pressure reading is 0.0 [kPa].
WARNING! Be sure the area around the machine is clear of personnel and
obstructions as the vehicle may move during these tests. If the machine starts to
move, fully depress the decelerator pedal and shift the drive train control lever to
NEUTRAL.
2. With the drive train control lever in neutral, brake pedal is applied and the engine running at high
idle, observe the readings of the pressure test gauges. The readings should be the pressures as
shown in the above chart. Fully depress the decelerator pedal.
With the engine running at low idle, steering in low (high) range, shift the drive train neutral lock
lever to its unlocked position and the drive train control lever into transmission forward first and
slowly release the decelerator pedal, machine is moving. With the engine running at high idle,
shift the transmission through second and third forward gear range, steering both low and high
range, machine stands still. Observe the readings of the pressure test gauges. The readings
should be the pressures as shown in the above chart. Oil pressures should increase and
decrease rapidly when engaging and disengaging clutch packs. Fully depress the decelerator
pedal and shift the transmission in neutral.
Repeat this step for each transmission reverse gear range.
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