TM 5-5420-234-14&P
4-12. UNIT TROUBLESHOOTING (continued).
13. MAIN FRAME DOES NOT LOAD IN MANUAL MODE (MODEL A ONLY)
(continued).
ACCESS
COVER
CONTINUITY TEST
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.
UPPER
BODY
(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
terminals. Hold the joystick in the LOAD
position, and check multimeter for
continuity.
BASE
LOAD FUNCTION
SWITCH
4-257
Change 1
