TM 5-3805-281-24-1
System Operational Checks
5 ENGINE SPEED AND PERFORMANCE CHECKS
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ENGINE RPM DIAL
A--Engine RPM Dial
YES: Go to next check.
CHECK
Start the engine.
NO: Check engine rpm
dial and harness. Go to
9010
Group 9015-15.
Turn engine rpm dial (A) to the right to fast idle position.
10
13
Did engine speed increase to fast idle in standard
mode?
Turn engine rpm dial to the left to slow idle position.
Did engine speed decrease to slow idle?
NOTE: To check and verify engine speeds, see
procedure in Group 9010-20.
T102100 UN26JUL96
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YES: Go to next check.
AUTO-IDLE SPEED
A--Auto-Idle Switch
CHECK
B--Auto-Idle Indicator
NO: See Auto-Idle Circuit
Diagnostic Procedures in
Start engine.
Group 9015-15.
Run engine at half speed.
Push auto-idle switch (A) on.
Does the auto-idle indicator (B) come on?
Does the engine speed decrease to auto-idle speed after
about 4 seconds?
Actuate the bucket function momentarily. Does the
engine speed increase immediately to the engine rpm
dial setting?
Does the engine speed return to auto-idle after 4
seconds?
T103536 UN09SEP96
Push auto-idle switch (A) again to turn it off.
Does the engine speed increase immediately to the
engine rpm dial setting and the indicator go out?
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