ARMY TM 9-6115-670-14&P
4-154
4.60. EMERGENCY SHUT-DOWN SWITCH.
This task covers:
a. Test
b. Replace
INITIAL SETUP
Tools
General Mechanic's Tool Kit
(Item 1, Appendix B)
Shop Equipment, Electrical Repair
Semi trailer Mounted
(Item 3, Appendix B)
Equipment Conditions
APU control unit disconnected from shelter.
Materials/Parts
Emergency Shut-down Switch
TEST
a. Tag and remove leads from emergency shut-down switch (perform steps a through c of REPLACE).
b. Pull switch fully out.
c. Refer to Figure FO-1 (SICPS/WIN-T) or F0-7 (JTACS) and use Multi-meter to test for continuity
across switch terminals. If there is no continuity, replace switch.
d. Push switch fully in.
e. Refer to Figure FO-1 (SICPS/WIN-T) or F0-7 (JTACS) and use Multi-meter to test for no continuity
across switch terminals. If there is continuity, replace switch.
REPLACE
a. Remove ten screws (caged nuts (SICPS), machine screws (JTACS and WIN-T)) (1, Figure 4-48)
securing APU control unit cover to chassis and remove cover.
b. At rear of push button (2), identify and tag terminal leads (4).
c. Loosen four screws (3) and remove terminal leads (4).
d. At front panel, remove red knob (6) by turning ccw.
e. Remove nut (5) securing push button (2) to APU control unit cover front panel. Remove push
button.
NOTE
Do not remove screws (3).
