(a)
Move the ALTERNATE FLAP arm switch to the ARM position.
NOTE: The standby hydraulic pump motor will operate when the
____ ALTERNATE FLAP arm switch is in the ARM position.
(b) Move the flap control lever to the 40-unit detent.
NOTE: The load on the flap alternate electric motor is less
____ with the flap control lever in the 40-unit detent and the hydraulic system B pressurized.
CAUTION: DURING GROUND OPERATIONS, DO NOT OPERATE THE FLAP
_______ ALTERNATE DRIVE UNIT FOR MORE THAN 4 MINUTES ON AND 25 MINUTES OFF. YOU CAN CAUSE DAMAGE TO THE ALTERNATE DRIVE UNIT.
(c) Move the ALTERNATE FLAP control switch to the DOWN position. Hold the switch in this position until the flaps stops.
NOTE: The extension of the trailing edge flaps is controlled
____
by a limit switch.
CAUTION: WAIT A MINIMUM OF 15 SECONDS AFTER THE FLAPS STOP BEFORE
_______ YOU USE THE ALTERNATE SYSTEM TO MOVE THE FLAPS AGAIN. YOU CAN CAUSE DAMAGE TO THE FLAP ALTERNATE ELECTRIC MOTOR.
(d) Move the ALTERNATE FLAP control switch to the UP position. Hold the switch in this position until the flaps stops.
NOTE: The retraction of the trailing edge flaps is controlled
____
by a limit switch.
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737-300/400/500MAINTENANCE MANUAL
(e)
Move the flap control lever to the UP detent.
(f)
Move the ALTERNATE FLAP arm switch to the OFF position.
(g)
Move the ALTERNATE FLAP arm switch to the ARM position.
(h)
Move the flap control lever to the 10-unit detent. 1) Make sure the flaps do not move.
(i)
Move the ALTERNATE FLAP control switch to the DOWN position. Hold the switch in this position until the flaps are in the 10-unit position.
(j)
Move the ALTERNATE FLAP control switch to the OFF position.
(k)
Move the ALTERNATE FLAP arm switch to the OFF position.
S 715-007
(3)
Move the flap control lever to the 40-unit detent.
(a)
Make sure the flaps extend to the 40-unit position.
S 715-008
(4)
Move the flap control lever to the UP detent.
(a)
Make sure the flaps move to the fully retracted position.
S 865-009
(5)
Remove the system B hydraulic power (AMM 27-51-00/201).
S 865-010
(6)
Remove the electrical power (AMM 24-22-00/201).
TASK 27-51-00-825-011
3. Adjustment - Trailing Edge Flap System______________________________________
A. General
(1)
When you measure the position of the components of the flap system, it is necessary to stop for two minutes after you move the flaps. With hydraulic power applied, the flaps can move a small amount for 2 minutes after an extension or retraction.
B.
Special Tools and Equipment
(1)
Rig Pin F-1 - 0.311 +0.000/-0.002 inch diameter, 3.40 |0.06-inches long (MS20392-4)
NOTE: The rig pin is a part of the kit F70207-107.
____
(2)
F70300-1 Flap Drive Adapter
(3)
4MIT65B80307-1 Protractor Assembly (Preferred)
(4)
F52485-500 Protractor Assembly (Optional)
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C.
D.
E.
F.
G.
A
737-300/400/500MAINTENANCE MANUAL
Standard Tools and Equipment
(1)
Cable Tensiometer - 0 to 320 pounds capacityReferences
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