TM 5-3895-379-23-1
0060
TROUBLESHOOTING PROCEDURE
SYMPTOM
VIBRATION OCCURS IN ONLY ONE DRUM
MALFUNCTION
No Power To Front or Rear Drum Solenoid.
CORRECTIVE ACTION
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.
1.
Open left-side door assembly (TM 5-3895-379-10).
2.
If rear drum does not vibrate, disconnect harness connector from rear drum solenoid connector.
3.
If front drum does not vibrate, disconnect harness connector from front drum solenoid connector.
4.
Turn battery disconnect switch to ON position (TM 5-3895-379-10).
5.
Turn engine start switch to ON position (TM 5-3895-379-10).
6.
Set multimeter to measure VDC.
7.
Touch positive (+) probe of multimeter to terminal 1 (wire C923-BU for rear drum or C927-PU for
front drum).
8.
Touch negative (-) probe of multimeter to good ground.
9.
If 24 to 28 VDC are not measured at terminal 1 (wire C923-BU for rear drum or C927-PU for front
drum), 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 C923-BU for rear drum or C927-PU for
front drum), connect harness connector to solenoid connector and notify supervisor.
b.
If 24 to 28 VDC are not measured at terminal 1 (wire C923-BU for rear drum or C927-PU for
front drum) and VIBE fuse is good, connect harness connector to solenoid connector and
go to next malfunction.
0060-2
03/15/2011Rel(1.8)root(tswp)wpno(T00066)
