S 584-041
(8)
Make sure the actuator is supported. Make sure the rod end is free to move so the rod end will not hit anything when it extends as the actuator is operated.
NOTE: The actuator retracted length is 25.13 inches
____ (638.3 millimeters). The extended length of the actuator is
37.77 inches (959.4 millimeters) for a stroke of 12.64 inches
(321.1 millimeters).
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S 864-043
WARNING:_______ MAKE SURE THE DOWNLOCKS ARE INSTALLED ON THE NOSE AND MAIN
LANDING GEAR BEFORE YOU MOVE THE CONTROL LEVER FOR THE LANDING
GEAR. IF THE CONTROL LEVER IS MOVED WITHOUT THE DOWNLOCKS
INSTALLED, THE LANDING GEAR CAN RETRACT AND CAUSE INJURY TO
PERSONS OR DAMAGE TO EQUIPMENT.
(9)
Make sure the downlocks are installed on the nose and main landing gear (AMM 32-00-20/201).
S 864-045
(10)
Move the control lever for the landing gear to the OFF position.
S 864-044
(11)
Pressurize the left hydraulic system (AMM 29-11-00/201).
S 864-046
(12)
Move the control lever for the landing gear to the DN position.
S 434-038
(13)
If the airplane is on jacks do the steps that follow:
(a)
Install the packings (7) on the lubrication insert (15). Put in the pin (14) to align the locking bolt holes.
(b)
Install the pin (14) and insert (15), washers (8 and 9), and nut (10) to connect the retract actuator to the shock strut lugs (Fig. 401, View B-B). Tighten the nut (10) to 90-125 pound-inches (10.2-14.1 newton-meters), then loosen to the nearest lock position to install the antirotation bolt (11). Install the antirotation bolt (11), washer (12), and nut (13).
(c)
Remove the sling equipment and the hoist.
WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF THE AREA
_______ AROUND THE LANDING GEAR DOORS. THE DOORS OPEN AND CLOSE QUICKLY AND CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(d) Do the extension and retraction test for the nose landing gear (AMM 32-34-00/501).
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(e)
Remove the power from the hydraulic system if it is not necessary (AMM 29-11-00/201).
(f)
Examine the actuator for hydraulic leaks.
S 434-039
(14)
If the airplane is not on jacks do the steps that follow:
(a)
Remove the sling equipment and the hoist.
(b)
Move the control lever for the landing gear from the DN position to the UP position five times. Make sure the conditions that follow occur during this operation (this will show that the hoses are correctly connected and that there is no leakage): 1) The actuator rod retracts when the control lever is put in
the UP position. You can extend the actuator rod when the control lever is put in the DN position. 2) There are no hydraulic leaks at the fittings.
(c)
Put the control lever in the DN position.
(d)
Install the packings (7) on the lubrication insert (15). Put in the pin to align the locking bolt holes.
(e)
Install the pin (14) and insert (15), washers (8 and 9), and nut (10) to connect the retract actuator to the shock strut lugs (Fig. 401, View B-B). Tighten the nut (10) to 90-125 pound-inches (10.2-14.1 newton-meters), then loosen to the nearest lock position to install the antirotation bolt (11).
(f)
Install the antirotation bolt (11), washer (12), and nut (13).
G.
Put the Airplane Back to Its Usual Condition
S 614-022
(1)
Make sure the fluid in the hydraulic reservoir is at the correct level. Fill if it is necessary (AMM 12-12-01/301).
(2)
Lubricate the actuator at the grease fittings.
S 644-023
S 094-024
WARNING: USE THE PROCEDURE IN AMM 32-00-15/201 TO REMOVE THE DOOR LOCKS.
_______ THE DOORS OPEN AND CLOSE QUICKLY AND CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(3) Remove the door locks from the landing gear and close the doors (AMM 32-00-15/201).
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NOSE GEAR RETRACT ACTUATOR - INSPECTION/CHECK
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