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TM 10-3930-671-24
4.7. Engine RPM & Stall Tests
Engine RPM at Idle ....................................................................... F-88
Engine RPM at Max No-Load Governed Speed ........................... F-88
Full Throttle Engine Stall RPM .. .................................................... F-89
Analysis of Stall Test ..................................................................... F-90
Transmission Pressure Checks ..................................................... F-91
Test Completion ............................................................................ F-91
These tests are performed to:
1.
Check engine condition and correct function.
2.
Check for correct engine speed settings and
speed control function.
3.
Check whether major components or systems
other than the engine have problems or are
causing problems.
Tests include:
1.
Engine idle speed and vacuum.
2.
Engine maximum no-load governed speed and
vacuum.
3.
Engine speed and vacuum at hydraulic tilt
bypass (relief pressure).
4.
Engine stall speed and vacuum.
Minimum Tools Required:
•
Tachometer
•
Vacuum gauge
NOTE
Prior to performing this service procedure, it is
recommended that you first:
•
Park truck safely.
•
Return all controls to neutral.
•
Put blocks under the upright rails and raise
the drive wheels off the ground, except as
otherwise noted.
1. Open and remove both side doors, and raise the
seat deck. Be sure the seat deck support is
securely latched.
F-87
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