TM 55-1520-240-23-3
3-10
INSTALL LANDING GEAR WHEEL CUPS AND KEYS
(Continued)
3-10
3.
Install eight wheel keys (4) on bosses (5) in
wheel half (2). Tap each key lightly if needed to
firmly seat it on boss.
Acetone (E20) is extremely flammable.
It can be toxic. Avoid inhaling. Use
only with adequate ventilation. Avoid
contact with skin, eyes, or clothing.
Keep away from heat, sparks, or open
flame. In case of contact, immediately
flush skin or eyes with water for
at least 15 minutes. Get medical
attention for eyes.
4.
Clean screws (6) and keys (4). Use acetone
(E20). Wear gloves (E186).
Antiseize compound (E77) is
extremely toxic. It can irritate skin
and cause burns. Avoid inhaling. Use
only with adequate ventilation. Avoid
contact with skin, eyes, or clothing.
In case of contact, immediately flush
skin or eyes with water for at least
15 minutes. Get medical attention
for eyes.
5.
Lubricate thread of eight screws (6). Use
antiseize compound (E77).
6.
Install screws (6) in keys (4). Torque screws to
70 inch-pounds.
7.
Using a 3/32 (0.0937) inch (2.38 mm) ball
staking tool with a hardness of Rockwell 060 and
surface finish of 32 RMS or item E-312, stake
each screw (6) to slot (7) in key (4) as follows:
Start the stake on the outboard side of the
screw centerline. Initially hold the staking tool
vertically and apply a series of sharp blows with a
hammer. The screw material should flow outward
toward the slot. Once a clean ball depression is
established, angle the staking tool to provide a
15º to 20º outboard component to complete the
stake. Insure enough material is displaced on
the screwhead to resist loosening. The staked lip
will fill approximately (1/3) of the staking slot.
3-32
