5.32 BURNER MONITORING TEMPERATURE SWlTCH MAINTENANCE.

Figure 5-43 Preheating Assembly Maintenance.

5.33 GLOWPLUG MAINTENANCE

TM-9-6115-668-13 5Kw 28VDC Auxiliary Power Unit (APU) MEP 952B Manual
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TM 9-6115-668-13 5.32 BURNER MONITORING TEMPERATURE SWlTCH MAINTENANCE. This task covers: a. Removal b. Installation INITIAL SETUP Tools Equipment Conditions General Mechanic’s Tool Kit Reference (item 2, appendix B) Generator Set 150 kW shut Automotive Fuel and Electrical System Repair, Tool Kit down (item 3, appendix B) paragraph 2.5.2 Disconnect the negative battery cable first and then the positive battery termi- nal cables. Failure to observe this warning could result In severe personal injury or death. Tag all cables prior to removal to ensure correct connection of the cables during installation. 1. Open flap (2, figure 5-44) on unit hood assembly (1). Do not pull round plugs off cables. 2. Unplug both round plug parts (3, 4) of X109 on burner monitoring temperature switch S109 (5). 3. Remove probe with microswitch (5, 6) from heating unit (10). 4. Hold probe with microswitch (56) at unthreaded portion (8) and screw in threaded hex portion (7). 5. Disassemble probe with microswitch (5, 6) from fasteners (7, 8, 9). 1. Reassemble probe with microswitch (5, 6) and fasteners (7, 8, 9). 2. Hold probe with microswitch (5, 6) at unthreaded portion (8) and screw in threaded hex portion (7). 3. Install probe with microswitch (5, 6) into heating unit (10). 4. Plug parts (3, 4) together. 5. Close nap (2). 5-180

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