(b)
Rub the open surfaces of the inner cylinder (13), and the lower bearing (12) with hydraulic fluid.
(c)
Lift up the spare seal (4) and apply a light layer of hydraulic assembly lubricant.
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CAUTION:_______BE CAREFUL NOT TO EXTEND THE SEAL MORE THAN NECESSARY. IT CAN CAUSE DAMAGE TO THE SEAL OR CAUSE A PROBLEM DURING THE INSTALLATION.
(d)
Lift up the spare seal (4) and apply a light layer of hydraulic assembly lubricant.
(e)
Carefully move the seal up into the groove at the top of the lower bearing.
(f)
Use the blunt nonmetallic tool if it is necessary.
(g)
Examine that the seal is not twisted.
(h)
Install the backup rings (11).
(i)
Lift the seal (3) and apply a light layer of hydraulic assembly lubricant .
(j)
Move the seal (3) into the outer groove of the lower bearing.
(k)
Install the backup rings (7).
S 948-086
(8)
Install the axle jacks below each end of the truck beam (AMM 07-11-03/201).
S 438-087
(9)
Install the lower bearing assembly.
(a)
Put the gland nut, the retainer and the lower bearing on top of each other.
(b)
Measure the height and make a record as the dimension A (Fig. 802).
CAUTION: KEEP THIS TOOL IN ITS POSITION WHILE YOU INSTALL THE
_______
PARTS. THIS WILL PREVENT DAMAGE TO SEALS.
(c)
Lubricate the seal guide tool with the applicable hydraulic fluid and install the tool into the outer cylinder.
(d)
Move the assembled parts up into the outer cylinder (2) as much as possible by hand.
(e)
Lubricate the inner surfaces of the gland seating tool.
(f)
Set the tool halves 180 degrees apart on the inner cylinder (13).
(g)
Apply force to the gland seating tool to put the assembled parts in the outer cylinder (2). 1) Use the jacks installed below the truck to lift the truck
symmetrical. 2) Lift the truck until the gland nut (9) on the yoke touches the seating tool.
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WARNING:_______DO NOT APPLY UNWANTED FORCE WITH THE JACKS. THIS WILL CAUSE DAMAGE TO THE YOKE, THE GLAND NUT AND THE SEATING TOOL. IT ALSO CAN CAUSE INJURY TO PERSONS.
3) Carefully lift the truck.
4) Carefully push the assembled parts into the outer cylinder
(2) until the parts move into the outer cylinder (2). 5) During the jack, make sure it moves freely. 6) Make sure not too much force is applied to the seating tool
through the gland nut (9) and the yoke.
NOTE: Resistance will increase because of the seal
____ friction while the seal (6) moves into the seal guide tool. The resistance will decrease after the seal is through the guide.
(h) Decrease the jack pressure lightly and remove the gland seating tool and the seal guide tool.
WARNING:_______ DO NOT LET YOUR SKIN TOUCH THE MATERIAL. CORROSION
INHIBITION MATERIAL CONTAINS FLAMMABLE AND POISONOUS
MATERIALS. SPEAK WITH THE MANUFACTURER, FIRE, INDUSTRIAL
HYGIENE AND SAFETY ORGANIZATIONS, ON THE NECESSARY
EQUIPMENT, AND PROCEDURE FOR THIS MATERIAL. FLUSH THE
MATERIAL FROM THE SKIN OR FROM THE EYES IMMEDIATELY WITH
WATER. PROVIDE MEDICAL AID TO ANY PERSON WITH AN INJURY
IMMEDIATELY.
(i) Apply the corrosion inhibition material to the gland nut threads.
CAUTION: DO NOT TIGHTEN THE GLAND NUT (9) MORE THAN THE TORQUE
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本文链接地址：747-400 AMM 飞机维护手册 起落架 LANDING GEAR 1(118)
