TM 55-1520-240-23-3
3-9
REMOVE LANDING GEAR WHEEL CUPS AND KEYS
3-9
INITIAL SETUP
Applicable Configurations:
All
Tools:
Aircraft Mechanic’s Tool Kit, NSN 5180-00-323-4692
Container to Hold Wheel and Boil Water
Source of Heat to Boil Water, or Oven
Materials:
Carbon Dioxide (Dry Ice) (E92)
Kevlar Gloves (E187)
Personnel Required:
Medium Helicopter Repairer
Equipment Condition:
Off Helicopter Task
Tire and Tube Removed From Wheel (Task 3-8)
1.
Remove eight screws (1) and keys (2) from
inboard wheel half (3).
Carbon dioxide (dry ice) (E92)
causes severe burns (frost bite) and
gives off toxic fumes. Use only in
well-ventilated area. Do not get in
eyes, on skin, or clothing. In case of
contact, immediately flush with plenty
of water. Get medical attention for
eyes.
Wear Kevlar gloves (E187) when
handling heated or chilled parts.
Injury to personnel can result.
NOTE
Bearing cups are a shrink fit. Wheel
must be expanded to remove them.
2.
Expand wheel halves (3 and 4) by boiling in
water for 30 minutes or heating in an oven. Do
not exceed 300ºF (149ºC) in oven. Pack cups
(5) with dry ice (E92).
3.
Remove bearing cups (5).
FOLLOW-ON MAINTENANCE:
None
END OF TASK
3-30
