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S 975-094
(6) Monitor the pressure at which the actuator retracts and locks.
NOTE: The actuator is locked when the main landing gear door does____
not open when you remove the hydraulic pressure.
(a) If the actuator locks between 1250 psi and 1550 psi, the
actuator is adjusted correctly.
(b) If the actuator locks at a pressure less than 1250 psi, the
actuator rod is too long.
(c) If the actuator does not lock before you get a pressure of 1550
psi, the actuator rod is too short.
S 985-095
(7) Apply hydraulic pressure to the extend side of the actuator to open
the main landing gear door.
S 865-096
(8) Remove the hydraulic power (AMM 29-11-00/201).
S 825-097
(9) Do these steps if it is necessary to adjust the length of the
actuator rod:
(a) Remove the attach pin from the rod end of the actuator
(View A-A).
(b) Remove the lockwire.
(c) Loosen the jamnut from the rod end (Detail B).
(d) Turn the rod end into or out of the piston rod of the actuator
to decrease or increase the length of the rod.
(e) Tighten the jamnut.
(f) Install the attach pin.
S 825-098
(10)
Do the previous step to monitor the pressure at which the actuator retracts and locks and adjust the forward and aft door stops until the conditions that follow occur:
(a)
The actuator closes the door and locks at a pressure between 1250 psi and 1550 psi.
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MAINTENANCE MANUAL
(b)
The forward and aft door stops touch the stop pads on the main landing gear door.
(c)
The door has the correct tolerances for the edge clearances and permitted misfairs.
S 435-099
(11)
Tighten the jamnut to 57-80 pound feet (Detail B).
S 435-100
(12)
Install the lockwire.
NOTE: Make sure you align the rod end lock with the slot in the end
____
of the piston rod.
S 435-101
(13)
Install the parts that follow to connect the rod end of the actuator to the door beam (View A-A).
(a)
Pin
(b)
Spacers
(c)
Washer
(d)
Nut
(e)
Cotter pin
S 435-102
(14)
Install the cotter pins in the forward and aft door stops.
S 825-103
(15)
Do the steps that follow to adjust the tang assembly (View F-F):
(a)
Remove the lockwire from the jamnuts on the skid bars.
(b)
Adjust the length of the skid bars to get the tang inside the tolerances.
(c)
Measure the clearances and the misfairs on the forward and aft edges of the tang assembly.
(d)
If the tang misfairs outside the door add shims (3 maximum) under the attach clevis on the door.
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