TM 5-3895-379-23
TROUBLESHOOTING PROCEDURES - CONTINUED
0006 00
Table 6. Vibratory System Troubleshooting Procedures - Continued.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
11. Vibration Occurs In Only One Drum - 3. Check for power at drum select 1. If 24 to 28 Vdc are not measured
switch. Touch positive (+) probe
at terminal 4 (wire C926-BU)
Continued.
of multimeter to terminal 4 (wire
while drum select switch is pulled
C926-BU) and negative (-) probe
back to rear position, turn engine
of multimeter to good ground
start switch and battery disconnect
while drum select switch is pulled
switch to OFF position (TM 5-
back to rear position to check rear
3895-379-10). Replace drum
vibratory circuit. Touch positive
select switch (WP 0071 00).
(+) probe of multimeter to
terminal 6 (wire C927-PU) and 2. If 24 to 28 Vdc are not measured
at terminal 6 (wire C927-PU)
negative (-) probe of multimeter
while drum select switch is pushed
to good ground while drum select
forward to front position, turn
switch is pushed forward to front
position to check front vibratory
engine start switch and battery
circuit. Touch negative (-) probe
disconnect switch to OFF position
of multimeter to good ground and
(TM 5-3895-379-10). Replace
positive (+) probe of multimeter
drum select switch (WP 0071 00).
to terminal 6 (wire C927-PU) and
then to terminal 4 (wire C926- 3. If 24 to 28 Vdc are measured at
terminals 4 and 6 while drum
BU) while drum select switch is
select switch is in center position,
in center position to check
turn engine start switch and battery
vibratory circuit to both drums.
disconnect switch to OFF position
(TM 5-3895-379-10). Replace
drum select switch (WP 0071 00).
4. If all voltage output checks at
drum select switch are OK, notify
supervisor.
0006 00-124
