Table 3-3. Troubleshooting (Cont) - TM-5-6115-545-12

Table 3-3. Troubleshooting (Cont) - TM-5-6115-545-12_155

Table 3-3. Troubleshooting (Cont) - TM-5-6115-545-12_157

TM-5-6115-545-12 Power Unit Utility Pack Gas Turbine Engine Driven (Air Research Model PPU85-5) Non-Winterized and (Air Research Model PPU85-4) Winterized Manual
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MALFUNCTION 1 1 . 12. 13. 14. 15. (Deleted) Low coolant tempera- ture indicated on coolant temperature gage. c . Battery charging ammeter shows no charging when bat- teries are low or discharged. c. Battery charging ammeter indicates excessive charging rate after prolonged operation. Ac voltmeter does not indicate any set voltage, PROBABLE CAUSE Table 3-3. Troubleshooting (Cont) CORRECTIVE ACTION l. a. — b. — c. — d. — a . — b. — c. — d. — e. — f. — a . — b . — c. — d . e. — a. — b. — c. — & m. (Deleted) Defective coolant thermo- s t a t . Defective or improperly adjusted radiator shutter and control assembly. Defective coolant temp- erature transmitter. Defective coolant temperature gage. Blown alternator fuse. Improperly adjusted alternator. Defective or improperly adjusted alternator belt. Defective alternator. Defective battery charging ammeter. Open wire in charging circuit. Improperly adjusted alternator. Defective batteries. Low resistance or short to ground. Defective alternator. Defective battery charging ammeter. Defective speed switch. Defective VOLTS-AMPS selector switch. Defective ac voltmeter. l. & m . (Deleted) a. replace thermostat (para 3-209). b. — d. — a. — b. — d. — e. — f. — a. — b. — c. — d. e. — a. b. — c. — Adjust or replace shutter or control assembly (para 3-171). Replace transmitter (para 3-209). Replace gage (para 3-120). Replace fuse located at back end of alternator. Adjust alternator (para 3-184). Adjust or replace belt (para 3-183). Replace alternator^-(para 3-184). Replace ammeter (para 3-124). Find open wire and repair. Adjust alternator (para 3-184). Service or replace batteries (para 3-82). Inspect wiring and repair as necessary. Replace alternator (para 3-184). Replace ammeter (para 3-108). Replace speed switch (para 3-186). Replace switch (para 3-11 2). Replace voltmeter (para 3-105). Change 1 3 - 24

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