S 014-023-B00
(4)
Remove the access doors, panels and fairings.
(a)
Remove the forward panel of the aft fairing (AMM 54-32-02/401), if it is necessary to get access to the diagonal brace pins.
(b)
Remove the wing junction fairing (AMM 54-32-02/401), if it is necessary to get access to the midspar fuse bolts.
(c)
Remove the forward leading edge fairing (AMM 54-32-01/401), if it is necessary to get access to the upper link pins.
(d)
Remove the forward fairing (AMM 54-32-01/401).
(e)
Remove the engine fan cowl panels (AMM 71-11-02/401).
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WARNING: KEEP ELECTRICAL POWER OFF DURING THE DISCONNECTION OR
_______ CONNECTION OF THE FUEL, HYDRAULIC, AND ELECTRICAL LINES. THE ACCIDENTAL APPLICATION OF PRESSURIZED FLUIDS, ENERGIZING OF ELECTRICAL CIRCUITS, OR FIRE COULD CAUSE INJURY TO PERSONS.
(5) Deactivate the electrical, fuel, and hydraulic systems.
(a)
Make sure the external electrical power is disconnected, and that the airplane is grounded.
(b)
Set the FUEL CONTROL toggle switches, found on the engine start module, to CUTOFF, and attach a DO-NOT-OPERATE identifier to the switches. 1) Close the engine fuel shutoff-valve and disconnect the
electrical plug from the valve.
(c)
Close the hydraulic EDP supply shutoff-valve and disconnect the electrical plug from the valve.
(d)
Make sure the hydraulic system is depressurized
(AMM 29-09-00/201).
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(6) Use the tool placard to install the engine support sling C54004-1 (Figure 401).
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CAUTION: DO NOT LIFT THE ENGINE WITH A FORCE THAT IS MORE THAN NECESSARY
_______ PERMIT THE PIN/BOLT TO TURN WHEN YOU APPLY 125 POUND-INCHES MAXIMUM TORQUE. DO NOT APPLY A TOTAL LOAD OF MORE THAN 7,500 POUNDS (MORE THAN THE WEIGHT OF THE EQUIPMENT). DO NOT APPLY A LOAD OF MORE THAN 3,750 POUNDS ON ONE ATTACH POINT. DO NOT APPLY A LOAD WITH A DIFFERENCE BETWEEN THE TWO SIDES OF MORE THAN 230 POUNDS. LIFT THE ENGINE VERTICALLY. IF THE CRANE LIFTS THE ENGINE WITH TOO MUCH FORCE, OR AT AN INCORRECT ANGLE, DAMAGE TO THE ENGINE CAN OCCUR.
(7) Do these steps to remove the load from the pin/bolt that you will remove:
(a)
Slowly apply a small load with a crane.
(b)
Adjust the chain hoists so the loads on the inboard and outboard dynamometers are approximately equal.
(c)
Move the crane, if it is necessary, to apply a vertical load at the tool attach points. 1) At the side of the engine, visually align the engine sling
between the flanges on the fan case, to make sure the beam assembly is directly above the flanges. 2) At the front or rear of the engine, visually align the engine sling vertically side-to-side. 3) Monitor the angle of the engine sling side-to-side and forward/aft during the procedure.
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737-300/400/500MAINTENANCE MANUAL
(d) Slowly increase the load until you can turn the pin/bolt (that you will remove) with a maximum torque of 125 pound-inches
(14.3 N.m).
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