Figure 4-41. Water Pump Belt Adjustment

Figure 4-40. Engine Components (Sheet 2 of 2)

TM-5-6115-593-12 Power Plant Utility (MUST) Gas Turbine Engine Driven (AMERTECH Corp Model APP-1) Manual
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TM 5-6115-593-12 TO 35C2-3-463-1 a. Drain collant into clean container via coolant drain (see figure 4-2). Save coolant for reuse. b. Unscrew water filter from filter mounting head. Discard filter. c. Clean filter mounting head with solvent (see table 3-1). Dry with compressed air. d. Inspect filter mounting head for cracks and mutilated threads. e. Install new filter by screwing filter to filter mounting head. f. Replace coolant, then check coolant level; if low add proper coolant (see table 3-1). 4-69. SPEED SWITCH. (See figures 4-40 and 4-42.) The speed switch is driven by the engine camshaft. It provides overspeed protection and starter lockout protection. Testing of the speed switch requires a variable speed device and is performed by a higher level of maintenance. Replace the speed switch as follows: a. Removal and Installation (1) Remove electrical cable to connector (1, figure 4-42). (2) Unscrew switch from adapter (3), and remove switch (2). (3) Install switch (2) to adapter (3). (4) Connect electrical cable to switch connector (1). b. Test (Static). (1) Remove electrical cable from connector (1, figure 4-42). (2) Using ohmmeter set to Rx1 scale, check that continuity exists between terminals A-B and H-G on mechanical type speed switch only. (3) With ohmmeter set to Rx1000 scale, check for infinite resistance at terminals A-C, D-E, and F-J, on mechanical type speed switch only. (4) Reconnect electrical cable to switch connector (1). (5) For additional tests refer to next higher level of maintenance. Figure 4-41. Water Pump Belt Adjustment 4-103

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