TM 10-3930-675-24-1
TROUBLESHOOTING PROCEDURES (NON-ERROR CODE) - CONTINUED
0007 00
Table 2. Electrical Troubleshooting Procedures (Non-Error Code) - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
27. Function(s) Work Uncontrolled.
1. Check the following groups:
a. Boom functions
a. For a, proceed with steps 3
b. Tophandler functions
through 6.
An uncontrolled function is
b. For b, proceed with steps 7
usually caused by a short to
through 11.
ground or a stuck hydraulic
solenoid.
2. Test for electrical or hydraulic Disengage the emergency stop
fault. Start the engine (TM 10- button after test.
3930-675-10) and engage the
emergency stop button. If the
uncontrolled function stops,
it's electrical. If the function
does not stop, it's hydraulic.
Boom Functions, Electrical -
Steps 3 through 5.
3. Enter "DIAG SERVO" 5(13) a. If voltage is not 5V, proceed
in the diagnostic menu. The
with step 4.
voltage should be 5V.
b. If voltage is 5V, proceed with
step 5.
If mA values > 5mA appear
4. Check joystick. Enter "DIAG
SERVO" 9(13) and 10(13) in
without operating the joystick,
the diagnostic menu. The
replace the joystick (WP 0082
INPUT and OUTPUT should
00).
be <5mA with no joystick
input.
5. Unplug X158 and unplug the Replace grounded harness (WP
solenoid for the affected 0048 00-8).
function, check continuity of
the pins of the harness to
ground for the affected
function solenoid (WP 0048
00-8).
Boom Functions, Hydraulic -
Step 6.
6. Check
boom
functions. a. If function still works, shut
Unplug the affected function
down engine and remove the
hydraulic solenoid and start
affected solenoid. Check for
engine.
debris or broken O-rings.
Replace servo control valve
(WP 0250 00).
b. Replace main control valve
(WP 0249 00).
0007 00-65
