LIFT CYLINDER REPLACEMENT.
This task covers:
Gooseneck detached from trailer resting
on firm pad.
General Safety Instructions:
Tool set, general mechanics,
Gooseneck must be securely supported in a
manner that will prevent it from extending prior to
working on gooseneck lock pin hydraulic cylinder
Support Equipment common No.1
or lock pins.
Gooseneck must be securely supported during this procedure and resting
on a firm foundation. Severe injury or death to personnel may occur if
gooseneck is unstable or tips.
High pressure hydraulics used to operate this equipment can pierce body
tissue and cause severe injury to personnel. Never disconnect any hydraulic
line or fitting without first dropping pressure to zero.
Wear safety goggles when performing leakage tests on valves. Failure to
do so may result in serious eye injury due to high pressure oil.
Rigidly support front of gooseneck so that there is ample work clearance under the
gooseneck. Gooseneck base should be permitted to drop until the gooseneck lifting lugs
and center lug of the goooseneck are firmly on the ground to allow the maximum
extension of the lift cylinders.
Remove lower hydraulic line first in order to drain hydraulic fluid from
system. Do not attempt to reuse hydraulic fluid, but discard as described
in front matter portion of this manual under hazardous waste disposal
Disconnect and appropriately tag lower and upper hydraulic lines (1) from lift cylinder inlet
and outlet ports and cap or tape closed openings in ports and lines.