T R A N S M I S S I O N O I L T E M P E R A T U R E I N D I C A T I N G A ND W A R N I N G S Y S T E M O P E R A T I O N A L C H E CK

T R A N S M I S S I O N O I L T E M P E R A T U R E I N D I C A T I N G A ND WARNING SYSTEM VISUAL CHECK (Continued)

TRANSMISSION OIL TEMPERATURE INDICATING AND WARNING SYSTEM OPERATIONAL CHECK (Continued) - TM-55-1520-240-T-2_314

TM-55-1520-240-T-2 CH-47D Heilcopter Manual
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8-10.3 TM 55-1520-240-T 8 - 1 0 . 3 T R A N S M I S S I O N O I L T E M P E R A T U R E I N D I C A T I N G A ND W A R N I N G S Y S T E M O P E R A T I O N A L C H E CK INITIAL SETUP Applicable Configurations: All Tools: Electrical Repairer’s Tool Kit, NSN 5180-00-323-4915 Materials: None Personnel Required: 68F10 Aircraft Electrician 68F20 Aircraft Electrician References: TM 55-1520-240-23 Equipment Condition: TM 55-1520-240-23: Battery Connected Electrical Power On Hydraulic Power Off Visual Check of Transmission Oil Temperature Indicating and Warning System Performed (Task 8-10.2) TASK RESULT CHECK TRANSMISSION OIL TEMPERATURE INDICATING SYSTEM 1. 2. 3. 4. Check that XMSN OIL TEMP circuit If circuit breaker (1) is open, close it. If it opens breaker (1) is closed. again, go to Task 8-10.4. Set and hold XMSN OIL TEMP switch Pointer on XMSN TEMP indicator (3) shall indi- (2) to TEST. cate below –70°C (–94°F). Switch (2) TEST posi- tion shall light. If pointer does not move below –70°C point, go to Task 8-10.5. If pointer moves below –70°C point but switch TEST position does not light, replace switch. Release XMSN OIL TEMP switch (2). Switch (2) shall return to SCAN position. SCAN position shall light. Indicator pointer shall move up scale and display a temperature near ambient temperature. Record indication on XMSN TEMP indi- If switch does not return to SCAN, or SCAN posi- cator (3). tion does not light, replace switch. If indicator pointer does not indicate near ambient tempera- ture, go to Task 8-10.6. 8 - 2 20

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