Specifications

Power Train Testing and Adjusting
47
NOTICE
To make sure that the transmission oil does not
get hot, do not hold the transmission in a stall
condition for more than ten seconds. After the
transmission is stalled, put the controls in
NEUTRAL and run the engine at 1200 to 1500 RPM
to cool the oil.
3. Repeat the procedure above for the REVERSE
direction.
4. The stall speeds for the different trucks are listed
in the charts that follow:
Stall speeds that are low are an indication that the
engine performance is not correct or the one-way
cutch of the torque converter does not hold in reverse
direction. If the one-way clutch has a defect, the stall
speed will probably be more than 800 rpm low.
The stall speed must be the same in FORWARD and
REVERSE. If the stall speed is high in FORWARD and
REVERSE, check the following:
a. Check for air in the oil.
b. Check the torque converter and the clutch
pressures according to transmission Pressure
Tests in Testing And Adjusting.
c. If clutch pressure is correct, make an inspection of
the clutch assembly for that direction for possible
damage to clutch components.
LIFT TRUCK STALL SPEED
Engine
Max.RPM
Engine
RPM±100
Without Power
Brakes Applied
RPM±100
With Power
Brakes Applied
-
DB33A 1778 1678 2450±50
B3.3 1830 1730 2450±50
Hercules
2.7 LP
1633 1533 2500±100
Hercules
2.7 Gas
1633 1533 2500±100
Hercules
2.7 Dual
1520±75 1420±75 2500±100
MMC
G424 LP
1830 1730 2700±50
MMC
G424 Gas
1890 1790 2700±50
MMC
G424 Dual
1740±75 1640±75 2700±50
GM
G430 LP
1750 1650 2600 ± 50