CHAPTER 7
JACKING AND HOISTING
7-10 Jacking
CAUTION
When jacking helicopter, use mechanical or locking hydraulic
jacks, when available. Unlocked hydraulic jacks are subject
to pressure-loss which can affect critical measurements during
leveling or cause a raised helicopter to become unstable.
CAUTION
Never jack helicopter in windy conditions.
CAUTION
Perform jacking on a clean, flat, hard surface free of water,
oil, solvent, grease, or residue that could cause equipment or
personnel to slip during jacking procedure.
CAUTION
Do not actuate jacks from underneath helicopter. Remain clear
of landing gear skid tubes when helicopter is raised.
A. Jacking
1. Refer to Figure 7-1. Place one (appropriate capacity) jack under each (landing gear)
aft strut assembly jack lug/tab and under the ground handling ball. Install jacking point
adapters as required.
CAUTION
Ground handling ball must slide unrestricted across a flat surface
during jacking. When weighing, verify ball is not under side
load which could produce an erroneous weight indication.
2. Position jack levers for convenient access and engage jacks at lugs/tabs and ball.
Sandbag jacks for increased stability, as required.
3. Actuate jacks slowly and simultaneously (one person per jack recommended), maintaining
helicopter stability. Raise helicopter to required height.
CAUTION
Minimize personnel movement around raised helicopter.
SEP 2012 R66 Maintenance Manual Chapter 7 Jacking and Hoisting Page 7.1
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