TEST RESULT INDICATIONS
(1) If proper line pressure is found in any one test,
the pump and pressure regulator are working prop-
erly.
(2) Low pressure in all positions indicates a defec-
tive pump, a clogged filter, or a stuck pressure regu-
lator valve.
(3) Clutch circuit leaks are indicated if pressures
do not fall within the specified pressure range.
(4) If the overdrive clutch pressure is greater than
5 psi in Step 6 of Test Three, a worn reaction shaft
seal ring or a defective solenoid assembly is indi-
cated.
(5) If the underdrive clutch pressure is greater
than 5 psi in Step 4 of Test Two-A, a defective sole-
noid/pressure switch assembly or TCM is the cause.
CLUTCH AIR PRESSURE TESTS
Inoperative clutches can be located by substituting
air pressure for fluid pressure. The clutches may be
tested by applying air pressure to their respective
passages after the valve body has been removed. Use
Special Tool 6599-1 and 6599-2 to perform test (Fig.
30).
To make air pressure tests, proceed as follows:
ALL PRESSURE SPECIFICATIONS ARE PSI(ON HOIST, WITH FRONT WHEELS FREE TO TURN)
Gear Selector
Position
Actual Gear PRESSURE TAPS
Underdrive
Clutch
Overdrive
Clutch
Reverse
Clutch
Torque
Converter
Clutch Off
2/4
CLUTCH
Low/
Reverse
Clutch
PARK
0 mph
* PARK 0-2 0-5 0-2 60-110 0-2 X
115-145
REVERSE
0 mph
* REVERSE 0-2 0-7 165-
235
50-100 0-2 165-235
NEUTRAL
0 mph
* NEUTRAL 0-2 0-5 0-2 60-110 0-2 115-145
L
20 mph
# FIRST 110-145 0-5 0-2 60-110 0-2 115-145
3
30 mph
# SECOND 110-145 0-5 0-2 60-110 115-145 0-2
3
45 mph
# DIRECT 75-95 75-95 0-2 60-90 0-2 0-2
OD
30 mph
# OVERDRIVE 0-2 75-95 0-2 60-90 75-95 0-2
OD
50 mph
# OVERDRIVE
WITH TCC
0-2 75-95 0-2 0-5 75-95 0-2
*Engine speed at 1500 rpm
#CAUTION: Both front wheels must be turning at same speed.
42LE PRESSURE CHECK SPECIFICATIONS
Fig. 30 Air Pressure Test Plate
1 – AIR PRESSURE TEST PLATES
2 – 2/4 CLUTCH RETAINER HOLE
LH 42LE TRANSAXLE 21 - 23
DIAGNOSIS AND TESTING (Continued)
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