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6 Attach the foot or hand control air hoses to the quick
_
disconnects on the tool.
7 Connect the air supply to the drive motor. The air supply must
_ be capable of 100 psi (6.9 bar). The air supply must be lubricated and filtered at 6 SCFM (170 L/minute).
(3) Actuate the VSV system to the full open position as follows: WARNING : DO NOT PERMIT THE FUEL TO TOUCH YOUR SKIN OR CLOTHES.
_______ REMOVE YOUR CLOTHES IF THE FUEL TOUCHES THEM. RINSE YOUR SKIN FULLY WITH WATER WHERE THE FUEL TOUCHED YOU. FUEL CAN BURN YOUR SKIN.
CAUTION : USE A SECOND WRENCH TO APPLY COUNTERTORQUE TO THE NIPPLE
_______ WHEN YOU DISCONNECT/CONNECT FUEL LINES ON NIPPLES.
NOTE : Put a container under the HMU to catch fuel released when fuel
____
lines are disconnected.
NOTE : If the CART - STATOR ACTUATOR (856A1084G02) is not available,
____ the VSV system may be actuated to the full open position on an exceptional basis by dry motoring the engine (Ref. TASK 71-00-00-710-001).
(a) Disconnect the VSV rod-end and head-end flex-hoses from the hydromechanical unit (HMU).
(b) Remove the caps from the CART - STATOR ACTUATOR (856A1084G02).
(c) Attach the rod-end and head-end hoses from the cart to rod-end and head-end connectors of the rod-end and head-end hoses you disconnected from the HMU.
(d) Actuate the variable stator system CAUTION : DO NOT LET THE PRESSURE BE MORE THAN 300PSI (20.68BAR)
_______ OR YOU WILL CAUSE DAMAGE TO ENGINE PARTS.
R 1_ Pump the actuator until the VSV system is at the open positionR (actuator rod retracted).
(e) Disconnect the CART - STATOR ACTUATOR (856A1084G02). WARNING : PRESSURE OF UP TO 300 PSI. (20.68 BAR) EXISTS IN THE
_______ SUPPLY LINES. RELIEVE PRESSURE TO PREVENT INJURY WHEN DISCONNECTING FITTINGS.
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E E May 01/04 E E ECES E F 『 E C F M E E E E 56-5B E E E 1 Follow the instructions for use of the CART - STATOR ACTUATOR
_ (856A1084G02) to relieve any static pressure existing in the supply hoses. Gages on the CART - STATOR ACTUATOR (856A1084G02) should read zero and the selector valve should be in the OFF position.
2 Disconnect the hoses of the cart from the rod-end and head-end
_
hoses.
3 Install the caps on the cart hoses.
_
(f) Connect the rod-end and head-end hoses to the HMU. CAUTION : USE A SECOND WRENCH TO APPLY COUNTERTORQUE TO THE
_______ NIPPLE WHEN YOU DISCONNECT/CONNECT FUEL LINES ON NIPPLES.
1 TORQUE the head-end hose to between 450 and 550 lbf.in (5.08
_
and 6.21 m.daN).
2 TORQUE the rod-end hose to between 270 and 300 lbf.in (3.05
_
and 3.39 m.daN).
(4) Remove the borescope plugs from the stages to be inspected as follows. Tag each borescope plug to identify the stage from which it was removed:
NOTE : The borescope plugs are located along the compressor case
____ between the 4 and 5 o'clock positions, aft looking forward.
(a) Cut and remove the lockwire from the borescope plugs to be removed.
(b) Remove the IGV borescope plug (S1), if necessary, as follows: 1 Remove the two screws (20) that attach the borescope access
_ blanking plate (10) at 5 o'clock, aft looking forward, on the fan frame inner flange.
2 Remove the borescope access blanking plate (10).
_
3 Remove the IGV borescope plug (S1).
_ 4 Tag the plug to ensure it will be reinstalled in the correct
_
port.
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(c) Remove the stage 1 through stage 5 borescope plugs (S2 through S6), as necessary. Tag each plug to ensure it will be reinstalled in the correct port.
(d) Remove the stage 6, 7 and 8 borescope plugs (S7 through S9), as necessary, as follows:
CAUTION : DO NOT PUT MORE THAN 280 lbf.in. (31.64 m.daN) OF
_______ TORQUE ON THE 6TH, 7TH AND 8TH STAGE BOROSCOPE PLUGS WHEN YOU REMOVE THEM, OR THE INNER PLUG SHAFT COULD BREAK.
1 Loosen the outer borescope plug.
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