TM 5-3805-281-24-1
Tests
When using the laptop computer with excavator
diagnostics program, select "2 EC angle" from the
Monitor Data Items. (See the installation procedure in
this group.)
5. Turn the engine rpm dial to the slow idle position.
6. Turn key switch ON. EC motor (D) goes to the slow
idle position.
7. Turn engine rpm dial to fast idle, push E mode switch,
push auto-idle switch then wait 4 seconds, and then
turn engine rpm dial to slow idle. EC motor must move
to each position. Record voltage reading for each
mode.
Fast Idle in Standard Mode--Specification
Voltage....................................................................... 3.3--3.7 volts typical
E (Economy) Mode--Specification
Voltage....................................................................... 3.0--3.3 volts typical
Auto-Idle Mode--Specification
Voltage....................................................................... 2.7--2.9 volts typical
Slow Idle--Specification
9025
25
Voltage....................................................................... 2.5--2.7 volts typical
55
For HP (high power) mode, run engine at fast idle, push
HP mode switch, and then actuate arm in function over
relief. Record voltage reading.
HP (High Power) Mode With Arm In Function Over Relief--
Specification
Voltage............................................................. Fast idle in standard mode
voltage plus 0.2 volts or more
typical
CED,TX08227,3028 1918MAR983/3
6-202