CONTROL CUBICLE Assembly

Figure 3-11. Cleaning Air Filter Element Do not re-use element more than twice. Do not re-use element if it has even the slightest rupture. c. Installation. (1) Air Cleaner Element. Slide element (4, figure 3-10) over stud in housing (5), install seal (3) on wing nut (2) and secure element with wing nut (2). Hand tighten wing nut. Install seal (9) and dust cap (1). Be certain “Top” on dust cap faces up. Retighten clamp (10) to secure dust cap. 3-19. CONTROL CUBICLE Assembly. a. Inspect (see figure 3-12). (1) Control Cubicle Assembly. Inspect cubicle for dirt, grease or physical damage which might affect operation of the unit. Loosen three fasteners holding control panel to permit access to the inside of the cubicle. Check to see that all parts mounted to the cubicle are secure and all hardware is in place. Check that all instruments and controls operate nor- mally when unit in running. Check for broken or badly insulated harness wires and, if necessary, refer to higher level of maintenance. (2) Panel Light Assemblies (DS1 and DS2). In- spect panel light assemblies (1) for cracked or miss- TM 5-6115-584-12 NAVFAC P-8-622-12 TO-35C2-3-456-1 TM-05682C-12 ing lamp covers. Check that electrical connections are clean and tight. (3) panel Light Switch. Operate lamp switch (2) to check that lamps are operable. (4) Meters. Battery Indicator (M1), Hourmeter (M2), Frequency Meter (M3), Percent Current Meter (M4) and AC Voltmeter (M5). Inspect meter glass to see that it is not cracked. Check to see the meter face is clean and readable. Check to see that pointer is not bent. Check to see that electrical connection are clean and tight. (5) DC Control Circuit Breaker (CB2). Inspect circuit breaker for physical damage. Inspect electri- cal connections to see that they are clean and tight. Check to see that when button on breaker is pushed in or pulled out, it will remain in that position. (6) Master Rotary Switch (S1). Inspect switch for physical damage. Inspect electrical connections to see that they are clean and tight. Check to see that when placed in the OFF, PRIME & RUN AUX FUEL, or PRIME & RUN positions the switch will remain in position. Check to see that when placed in the PRE- HEAT position and released, switch returns to OFF position. With DC Control Circuit Breaker (CB2) pulled out (unit will not crank), check to see that when released from START position the switch will auto- matically return to PRIME & RUN position. (7) Panel Light Switch (S2). Inspect switch for physical damage. Inspect for clean and tight elec- trical connections. Check to see that switch will re- main in both ON and OFF positions. (8) Ammeter - Voltmeter Transfer Switch. Inspect switch for physical damage. Inspect for clean and tight electrical connection. Check to see that switch will re- main in both ON and OFF positions. (9) Voltage Adjust Rheostat (R1). Inspect rheo- stat for physical damage. Inspect for clean and tight electrical connections. Note rheostat position and check that rheostat moves smoothly thru its range. Return rheostat to previously noted position. (10) AC Voltage Regulator (A2). Visually inspect board and components for signs of overheating, cleanliness and physical damage. Inspect for clean and tight connections to the board and that board is securely mounted. (11) Transformers (T1 and T2). Inspect trans- formers for physical damage, cleanliness and that electrical connections are clean and tight. (12) Wiring Harness. Inspect wiring harness for physical damage such as broken or frayed wires or damaged insulation. (13) Control Cubicle Box. Inspect box for phys- ical damage. Change 3 3-17