TM 10-3950-672-24-2
Move the throttle to obtain 1,200 RPM engine speed.
and set the test load to 25 percent of the rated load.
Operate the engine at this speed and load level until the
coolant temperature is 70o C [160o F]. Check all gauges
and record the data.
NOTE: Do not proceed to the next step until a steady
blowby reading is obtained.
Open the throttle to the speed at which peak torque
occurs, and adjust the dynamometer load to 50 percent
of rated load. Operate the engine at this speed and load
level for 2 minutes.
Check all gauges and record the data.
NOTE: Do not proceed to the next step until blowby is
stable and within specifications.
With the engine speed remaining at torque peak RPM,
increase the dynamometer load to 75 percent of rated
load. Operate the engine at this speed and load level
for 2 minutes. Check all gauges and record the data.
NOTE: Do not proceed to the next step until blowby is
stable and within specifications.
Move the throttle lever to its fully opened position, and
increase the dynamometer load until the engine speed is
at torque peak RPM. Operate the engine at this speed
and load level for 10 minutes or until the blowby
becomes stable and within specifications.
Check all gauges and record the data.
5-330