TM 5-3895-379-23-1
0056
TROUBLESHOOTING PROCEDURE
WARNING
Remove all jewelry such as rings, dog tags and bracelets. If jewelry contacts electrical
connection a direct short may occur resulting in injury or death, and damage to
equipment.
Ensure that parking brake is engaged and propel control lever is in neutral position before
turning engine start switch to ON position. If roller accidentally starts or rolls, injury or
death to personnel may occur.
SYMPTOM
VIBRATION DOES NOT OCCUR WHILE AMPLITUDE SELECT SWITCH IS SET TO LOW PITCH
MALFUNCTION
No Power To Low Amplitude Solenoid.
CORRECTIVE ACTION
1.
Open left-side door assembly (TM 5-3895-379-10).
2.
Loosen screw and disconnect connector from low amplitude solenoid.
3.
Turn battery disconnect switch to ON position (TM 5-3895-379-10).
4.
Turn engine start switch to ON position (TM 5-3895-379-10).
5.
Set vibration control switch to manual (MAN) position and amplitude select switch to low pitch
(pull back).
6.
Set multimeter to measure VDC.
7.
Touch positive (+) probe of multimeter to terminal 1 (wire C924-YL).
8.
Touch negative (-) probe of multimeter to good ground.
9.
If 24 to 28 VDC are not measured at terminal 1 (wire C924-YL), press vibration on/off switch once
and try again.
10.
Turn engine start switch to OFF position (TM 5-3895-379-10).
11.
Turn battery disconnect switch to OFF position (TM 5-3895-379-10).
a.
If 24 to 28 VDC are measured at terminal 1 (wire C924-YL), connect connector to low
amplitude solenoid and tighten screw. Notify supervisor.
b.
If 24 to 28 VDC are not measured at wire terminal 1 (wire C924-YL) and VIBE fuse is good,
perform the following:
(1)
Connect connector to low amplitude solenoid and tighten screw.
(2)
Close left-side door assembly (TM 5-3895-379-10) and go to next malfunction.
0056-2
03/15/2011Rel(1.8)root(tswp)wpno(T00062)
