TM 1-1520-238-T-7
Change 5
10–181
10–59. FUEL TRANSFER PUMP IS NOT OPERATING WITH PILOT FUEL TRANS SWITCH SET
10–59
AT TO AFT (cont)
8. Have assistant attach air inlet lines to fuel
transfer air control valve and detach fuel transfer
pump air inlet lines.
Is air flow present?
YES
Replace fuel transfer pump
(TM 1-1520-238-23).
NO
Replace fuel transfer air control
valve
(TM 1-1520-238-23).
9. Check for 28 VDC at P2–D.
Is voltage present?
YES
Repair open wire between
P174–B11 and (A402)J2–D.
Go to paragraph 10–47.
NO
Refer to TM 1-1520-238-T-6 to
troubleshoot circuit protection
system (dc essential bus 2 –
pilot station).
END OF TASK
