TM 5-5420-234-14&P
4-12. UNIT TROUBLESHOOTING (continued).
11. HOOK ARM DOES NOT LOAD IN MANUAL MODE (MODEL A ONLY) (continued).
CONTINUITY TEST
HOOK ARM
LOAD SOLENOID
(1) Open hydraulic cabinet cover.
HARNESS
(2) Loosen four screws on main junction
box cover and open cover.
CAUTION
Electrical power must be shut off
from circuit before continuity can
be checked. Failure to comply with
this caution may result in damage
to test equipment or electrical sys-
tem.
(3) Remove connector from the hook arm
load solenoid.
(4) Set multimeter to ohms position.
NOTE
A reading of infinity indicates an
open circuit.
Junction box terminal 17 is
connected to one side of the
SOLENOID
solenoid; terminal 18 is
CONNECTOR
connected to the other side.
POSITION 1
(5) Connect multimeter leads to each end
of wire, and check multimeter for
continuity. Check for continuity
between the solenoid connector,
position 1, and terminal strip, position
17.
(6) Repeat Step 5 to check for continuity
between position 2 in the connector
and terminal strip, position 18.
SOLENOID
CONNECTOR
POSITION 2
05
Change 1
4-205
