Specifications

Power Train Testing and Adjusting 46
7. Check lubrication pressure at pressure tap (7) with
the transmission in neutral.
a. If lubrication pressure is low, see Problem: Low
lubrication pressure in Troubleshooting.
b. If lubrication pressure is high, see Problem:
High lubrication pressure in Troubleshooting.
8. Check converter charge (inlet) pressure at pressure
tap (3) with the transmission in neutral.
a. If converter charge pressure is low, see
Problem:
Low converter charge pressure in
Troubleshooting.
b. If converter charge pressure is high, see
Problem:
High converter charge pressure in
Troubleshooting.
9. Check converter outlet or cooler inlet pressure at
pressure tap (2) with the transmission in neutral.
a. If the pressure is low, see Problem:
Low converter outlet or cooler inlet pressure in
Troubleshooting.
b. If the pressure is high, see Problem:
High converter outlet or cooler inlet pressure in
Troubleshooting.
NOTE: Do not activate the inching pedal when
pressure checks are made. Check for the pressures
as shown in Transmission Pressure Chart in the
order that follows:
Converter Stall Test
NOTE: Make sure that the transmission oil is at the
correct temperature for operation before tests are
made.
The converter stall test is a test to check engine power.
It can also be used to locate a problem in the
transmission or torque converter when the condition of
the engine is known. An engine, which does not have
correct performance, will give an indication of a stall
speed that is not correct. If the engine performance is
correct and the stall speed is not correct, the problem
in the converter or transmission can be found with this
test.
NOTE: To check the engine performance, see the
respective engine module. This test checks the
maximum RPM that the engine, at full throttle, can turn
the converter with the turbine held stationary. To hold
the converter turbine, engage the brakes with the
transmission in FORWARD or REVERSE.
The drive wheels must not turn during the stall test.
Put a heavy load on the forks. Also put the truck in
position against a solid object that will not move (such
as a loading dock). When the tests are made, the
wheel brakes must be engaged with the left foot. The
accelerator pedal can be operated with the right foot.
WARNING
Make tests in a clear level area only. There must
be one operator. Keep all other personnel away
from the lift truck. Check the operation of the
brakes before the tests are made.
Check the high idle setting before the stall test is made.
Set the high idle to the specification, as given in the
respective engine module.
NOTE: Make sure that the transmission oil is at the
correct temperature for operation before tests are
made.
1. Connect a tachometer to the engine. Start the
engine. Engage the wheel brakes with the left foot.
2. Put the transmission control lever in FORWARD
and push the accelerator pedal down completely
with the right foot. Read the RPM on the
tachometer, then release the accelerator pedal.
Transmission Pressure Chart
Low idle 2000 rpm
Shift position - Neutral
Main Line
830 to 1,030, kPa
(120 to 150psi)
895 to 1,100,kPa
(130 to 160psi)
Clutch
0 kPa
(0 psi)
0 kPa
(0 psi)
Lubrication
14 to 70 kPa
(2 to 10 psi)
240 to 345 kPa
(35 to 50 psi)
Converter Chage
70 to 140 kPa
(10 to 20 psi)
590 to 795 kPa
(85 to 115 psi)
Converter Outlet
or Cooler Inlet
25 to 55 kPa
(4 to 8 psi)
250 to 400 kPa
(36 to 58 psi)
Shift position – Forward or Reverse
Main Line - -
Clutch
725 to 860 kPa
(105 to 125 psi)
725 to 965 kPa
(105 to 140 psi)
Lubrication - -
Converter Chage - -
Converter Outlet
or Cooler Inlet
-
-
-
-