Table 5-7. OPERATOR/CREW PREVENTIVE MAINTENANCE CHECKS AND SERVICES, HOUSING KIT.
NOTE: Within designated interval, these checks are to be performed in the order listed.
ITEMS TO BE
CHECK FOR AND HAVE REPAIRED
OR ADJUSTED AS NECESSARY
Excessive wear, rot or damage.
Inspect for breaks, cracks, loose
mounting, loose or missing hardware,
corrosion, or rust.
Table 5-8. Housing Kit Troubleshooting
1. LOUVERS FAIL TO OPERATE PROPERLY.
Observe if one or all louvers fail to operate.
If all louvers fail to operate, check wiring harness between louver circuits and 24V DC buss.
If only one louver fails to operate, refer testing and replacement of relay (K60 through K63), limit switches
(S60 through S63), and motors (B10 through B13) associated with malfunctioning louver (refer to next higher
level of maintenance).
RADIATOR SHUTTER FAILS TO OPERATE.
Visually inspect shutter assembly for broken springs, jammed shutters, and leaking coolant or hydraulic fluid
at control assembly. Refer to paragraph 5-33 for housing kit maintenance procedure.
c. Repair of Harness Assembly.
(1) If a broken wire is accessible, remove
sufficient insulation from each side of the
break to allow a good connection of the
bared ends by twisting them together.
Solder the connection and wrap with
(2) If a wire is broken from a terminal lug,
replace the lug. If a wire is broken from a
connector, resolder and reassemble.