TM 55-1520-240-23-1
1-31
LEVEL AND WEIGH HELICOPTER (4-POINT) (AVIM)
1-31
INITIAL SETUP
Applicable Configurations:
All
Tools:
Hydraulic Jack A5 or Equal (2)
Hydraulic Jack 1214-151 or Equal (2)
Aircraft Weighing Kit (2) (T186)
Aircraft Mechanic’s Tool Kit, NSN 5180-00-323-4692
Materials:
None
Personnel Required:
CH-47 Helicopter Repairer (5)
Inspector
References:
TM 55-1500-342-23
Equipment Condition:
Battery Disconnected (Task 1-39)
Electrical Power Off
Hydraulic Power Off
Gravity Refueling (Task 1-51.1) or Fuel Tanks Drained
(Task 10-34 or 10-35)
Engine Oil Tanks Serviced to Full (Task 1-52)
All Transmissions Serviced to Full (Task 1-54)
Hydraulic System Reservoir Serviced to Full (Task
1-59 or 1-62)
Helicopter Washed (Task 1-76)
Helicopter Inside Closed Hanger
Helicopter Inventory Complete
Helicopter on Level Surface With Winds Below 5
Knots
Helicopter Roped Off and Signs Posted to Restrict
Access
Both Forward Landing Gear Shock Struts Deflated
(Task 1-71)
Both Aft Landing Gear Access Panels Open (Task
2-2)
Both Aft Landing Gear Shock Struts Inflated (Task
1-72)
Servocylinder Safety Blocks Installed (Task 11-28)
General Safety Instructions:
WARNING
Jacking on uneven surface or in winds
or gusts over 20 knots can cause
helicopter to fall. Personal injury and
damage to equipment can result.
1-104
Change 3
