649. HOD XMN 1 READING DISPLAYS 28 LB OR LESS OIL PRESSURE (cont)

649. HOD XMN 1 READING DISPLAYS 28 LB OR LESS OIL PRESSURE

650. HOD XMN 1 READING DISPLAYS LOW OIL PRESSURE

TM-1-1520-238-T-4 Army Model AH-64 Helicopter (NSN
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TM 1-1520-238-T-4 6–116 6–49. HOD XMN 1 READING – DISPLAYS 28 LB OR LESS OIL PRESSURE (cont) 6–49 5. Detach P673. Check for short between: J579–1 and J579–3, J579–2 and J579–3. Does short exist? YES Repair shorted wire. Go to paragraph 6–13. NO Go to step 6. 6. Check for short between: P579–1and P579–3, P579–2 and P579–3. Does short exist? YES Replace oil system 1 heat exchanger pressure transducer (TM 1-1520-238-23). NO Refer to TM 9-1230-476-20-2 to troubleshoot multiplex subsystem. END OF TASK

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