TM 5-5420-234-14&P
4-12. UNIT TROUBLESHOOTING (continued).
12. HOOK ARM DOES NOT UNLOAD IN MANUAL MODE (MODEL A ONLY) (continued).
CONTINUITY TEST
RH LINKING HARNESS
CONNECTOR (J8B)
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 system.
(1) Open hydraulic cabinet cover.
(2) Loosen four screws on main junction
box cover and open cover.
(3) If necessary, remove remote control
cable from linking harness connector.
(4) Set multimeter to ohms position.
NOTE
A reading of infinity indicates an open
circuit.
(5) Connect multimeter to terminals at
each end of wire, and check multimeter
for continuity. Check between terminal
C on connector and position 7 in
junction box. Next, check between
terminal J on connector and position 23
in junction box. Finally, check between
terminal G on connector and position
13 in junction box.
NOTE
Any reading besides infinity indicates a
grounded wire.
(6) Check for grounded wiring by connect-
ing one multimeter lead to each termi-
nal wire and the other lead to chassis
LH LINKING HARNESS
ground.
CONNECTOR ( J8A)
WIRING REMOVED FOR CLARITY
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Change 1
4-225
