S 864-006
(4)
Deflate the shock strut for the nose landing gear.
(a)
Remove the air valve cap at the top of the shock strut.
WARNING:_______LOOSEN THE SWIVEL NUT A MAXIMUM OF TWO TURNS. AIR PRESSURE CAN BLOW THE VALVE OUT AND CAN CAUSE INJURY TO PERSONS.
(b)
Loosen the swivel nut a maximum of two turns.
(c)
When all of the pressure in the shock strut is removed, loosen the swivel nut fully.
S 844-007
(5)
Wind a cloth around the inner cylinder of the shock strut below the gland nut. This will prevent damage to the inner cylinder if the gland nut moves down.
S 034-008
(6)
Put a container in position to catch the hydraulic fluid when the swivel nut is loosened.
S 034-072
(7)
Remove the oil charging valve cap.
S 034-009
CAUTION: CLEAN ALL THE LEAKED HYDRAULIC FLUID FROM THE TIRES
_______ IMMEDIATELY. THE FLUID CAN CAUSE DAMAGE TO THE TIRES.
(8)
Loosen the swivel nut on the oil charging valve to drain the oil from the shock strut.
E.
Remove the Inner Cylinder
S 034-010
WARNING:_______BE CAREFUL WHEN YOU DISCONNECT THE TORSION LINKS. THE SPRING CARTRIDGE FOR THE NOSE WHEEL STEERING CAN MOVE QUICKLY AND CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(1)
Disconnect the lower torsion link from the inner cylinder of the shock strut (AMM 32-21-09/401). Attach it to the outer cylinder.
(2)
Remove the bolts, and the lockplate from the gland nut.
S 034-012
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S 034-013
(3)
Use the wrench adapter for the gland nut to remove the gland nut. S 844-014
DAMAGE TO THE SEALS.
(4)
Move the gland nut down the inner cylinder.
S 494-015
(5)
Install the retainer assembly on the gland nut.
CAUTION:_______ DO NOT LET THE EDGES OF THE GLAND NUT TOUCH THE INNER CYLINDER
WHEN YOU MOVE THE GLAND NUT DOWN. THE EDGES OF THE GLAND NUT
CAN CAUSE SCRATCHES ON THE INNER CYLINDER WHICH CAN CAUSE
NOTE: The lower bearing pushes on the retainer when you install the
____ dynamic seal.
S 494-016
(6)
Install the clamp assembly on the steering nut.
S 434-017
(7)
Tighten the nut on the clamp assembly.
S 844-018
(8)
Carefully push the flange of each seal protector between the outer cylinder and the inner cylinder.
S 434-019
(9)
Tighten the seal protector screws to hold the seal protector to the outer cylinder.
S 584-020
(10)
Lift the nose of the airplane until you can install the puller assembly tool (AMM 07-11-02/201).
S 494-021
(11)
Loosely install the puller assembly around the inner cylinder.
NOTE: Do not tighten puller assembly.
____
S 494-022
(12) Tighten the three pins into the lower bearing with your hand.
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S 864-023
(13)
Lift the nose landing gear with an axle jack until the gland nut is approximately 0.5 inch from the pins.
S 494-024
(14)
Tighten the puller assembly.
S 494-025
(15)
Install the strap around the axle.
S 864-026
(16)
Lower the axle jack. The lower bearing will move out of the recess between the inner cylinder and the outer cylinder.
NOTE: After the lower bearing and the retainer bearing move from
____ behind the outer cylinder the lower centering cam comes out.
S 094-027
(17)
Remove the retainer pin.
S 094-028
(18)
Remove the puller assembly, and the strap.
S 094-029
(19)
Remove the downlock for the nose landing gear (AMM 32-00-20/201).
S 034-030
WARNING:_______DO NOT PUT A PLUG IN THE OPENINGS OF THE RETRACT ACTUATOR. THE HYDRAULIC LINES CAN BREAK AND CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(20)
Disconnect the hydraulic lines from the retract actuator.
(21) 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：757 AMM 飞机维护手册 起落架 CHAPTER 32 - LANDING GEAR 2(11)
