TM 1-1520-238-23
(3-71 blank)/3-72
Change 4
3.20.
UPPER MAIN LANDING GEAR SHOCK STRUT EXTERNAL LEAKAGE REPAIR
3.20.1. Description
This task covers:
Deflate Shock Strut. Bleed Plug Packing Replacement. Check Valve Packing Replacement.
3.20.2. Initial Setup
Tools:
Aircraft mechanic’s tool kit (item 376, App H)
Light duty laboratory apron (item 27, App H)
Chemical protective gloves (item 154, App H)
Adjustable air filtering respirator (item 262, App H)
Materials/Parts:
Packing (2)
Hydraulic fluid (item 93, App F)
Wire (item 224, App F)
Personnel Required:
67R
Attack Helicopter Repairer
67R3F
Attack Helicopter Repairer/Technical
Inspector
Equipment Conditions:
Ref
Condition
1.57
Helicopter safed
1.66
Helicopter jacked (tripod jacks)
WARNING
FLIGHT SAFETY PART
The main landing gear shock strut contains a flight safety part. Failure to follow maintenance
instructions may result in serious injury or death of crewmembers and/or serious damage to
the helicopter.
The shock strut contains high pressure nitrogen. Bleed off shock strut pressure through
servicing valve before removing valve. Sudden release of high pressure nitrogen could
cause injury to personnel or damage to equipment. If injury occurs, seek medical aid.
GO TO NEXT PAGE
