2-28. MAINTENANCE OF BOOM AND WINCH-CONTROL CYLINDERS AND AT-
TACHING PARTS AND BOOM CONTROL CYLINDER ASSEMBLY (CONT).
BOOM DROP RATE TEST (CONT)
Pull BOOM cylinder control handle (6) to
RAISE until boom is at about a 5-degree
angle above the ground.
Release BOOM cylinder control handle
(6) to hydraulically lock boom in position.
Pull BOOM WINCH control handle (3) to
RAISE until load is about 18 in. (46 cm)
Release BOOM WINCH control handle (3)
to set boom winch brake.
Measure and record height of load above
A llOW load (5) to hang for 6 minutes.
Measure and record height of load (5)
Subtract result in step 15 from result in
step 13 to figure load drop rate.