TM 5-2420-230-24-2
Engine Dynamometer Test - Performance Checking (14-03)
Section 14 - Engine Testing - Group 14
Page 14-18
B Series Shop Manual
Caution: Shutting off the engine immediately after op-
erating at full load will damage the turbocharger and
internal components. Always allow the engine to cool
before shutting it off.
Remove the dynamometer load completely, and operate
the engine at 700 RPM for 3 to 5 minutes. This period will
allow the turbocharger and other components to cool.
Shut off the engine.
Engine Dynamometer Test - Perfor-
mance Checking (14-03)
Make sure the air compressor will be unloaded during the
performance check.
Apply regulated air pressure of 655 kPa [95 psi] to the air
compressor unloader (1).
Caution: Do not crank the engine for more than 30
seconds. Excessive heat will damage the starting motor.
Crank the engine and observe the oil pressure when the
engine starts. If the engine fails to start within 30 seconds,
allow the starting motor to cool for 2 minutes before crank-
ing the engine again.
L-448
