SUBTASK 30-11-12-010-003
WARNING
DO THESE SPECIFIED TASKS IN THE CORRECT SEQUENCE BEFORE YOU
OPEN THE THRUST REVERSERS: RETRACT THE LEADING EDGE,
DEACTIVATE THE LEADING EDGE, DEACTIVATE THE THRUST REVERSER
(FOR GROUND MAINTENANCE), AND OPEN THE FAN COWL PANEL. IF YOU
DO NOT OBEY THE ABOVE SEQUENCE, INJURIES TO PERSONS AND
DAMAGE TO EQUIPMENT CAN OCCUR.
(3) Do this task: Open the Thrust Reverser (Selection), TASK 78-31-00-010-801-F00.
SUBTASK 30-11-12-860-005
(4) Make sure that the thrust levers are in the IDLE position.
F. Procedure
SUBTASK 30-11-12-480-001
(1) Do these steps to connect the test equipment to the engine:
(a) Disconnect the bleed air supply line at the inlet tee at the supply pressure sense line on
the left of the engine.
(b) Connect a 0-100 PSIG nitrogen source, STD-1115, pressure regulator, STD-1198, and
test line at the tee to the supply pressure sense line.
SUBTASK 30-11-12-710-002
(2) Do this test of the solenoid valve:
(a) Slowly increase the supply pressure to between 25 psig (2 kg/cm
2
) and 30 psig
(2 kg/cm
2
).
(b) Make sure the precooler control valve goes closed.
(c) Put the WING ANTI-ICE switch on the engine and wing anti-ice control panel (P5–11) in
the ON position.
(d) Make sure these actions occur:
1) Listen for the ground wing thermal anti-icing solenoid valve to make a clicking
sound to indicate the valve is open.
2) Make sure the precooler control valve goes fully open, or 30 degrees from fully
open.
SUBTASK 30-11-12-720-002
(3) Do this check of the air mode transition:
WARNING
OBEY THE PROCEDURE THAT PUTS THE AIRPLANE IN THE AIR MODE.
IF YOU DO THE PROCEDURE INCORRECTLY, INJURIES TO
PERSONNEL, AND DAMAGE TO EQUIPMENT CAN OCCUR.
(a) Do this task: Prepare to Put the Airplane in the Air Mode, TASK 32-09-00-840-801.
(b) Do this task: Put the Airplane in the Air Mode, TASK 32-09-00-860-801.
1) Listen for the ground wing thermal anti icing solenoid valve to make a clicking sound
to indicate the valve is closed.
2) Make sure the precooler control valve goes closed.
(c) Put the WING ANTI-ICE switch goes to the OFF position.
(d) Put the WING ANTI-ICE switch to the ON position.
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
30-11-12
Page 502
D633A101-ILF Oct 15/2017
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
EFFECTIVITY
ILF ALL
To Next Page
Loading...
