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
~
CAUTION
Electrical power must be shut off
ACCESS
COVER
from circuit before continuity can
be checked. Failure to comply
with this caution may result in dam-
UPPER
age to test equipment or electrical
BODY
system.
(1) Remove four screws and lockwashers
and access cover from heater
compartment.
(2) Remove four screws and lockwashers
from cab control box.
(3) Remove six screws from cab control
box, and separate upper body from
base.
(4) Set multimeter to ohms position.
NOTE
A reading of infinity indicates an open
circuit.
(5) Connect multimeter leads to switch
BASE
terminals. Hold the joystick in the
LOAD position, and check multimeter
LOAD FUNCTION
for continuity.
SWITCH
4-211
Change 1
4
