REPAIR HYDRAULIC HOSES, TUBES, AND FITTINGS - Continued
REMOVE - Continued.
flammable and can be an irritant to
system. Avoid prolonged exposure.
Eye protection and rubber gloves
must be worn when working with
Paving machine must be turned off
and hydraulic line pressure bled off
by slowly opening fitting prior to
opening the hydraulic circuit. A
pressurized hydraulic circuit can emit
a high- energy spray when a hose or
fitting is opened under pressure.
Failure to slowly bleed off hydraulic
injuries to personnel.
When loosening a tube coupling nut,
secure - mating fitting with backup
wrench. Failure to secure mating
components and may result in failure
of tubes and accessories.
Install combination wrench or wrenches (5)
connecting fittings. Wrap connection fittings
with machinery wiping towel (three layers,
minimum) to protect against contact with high
Slowly loosen tube coupling nut (6) about 1/8
turn. Allow several seconds for pressure to
bleed off, then unscrew tube coupling nut
another 1/8 turn. Continue this procedure until
pressure is bled off and tube coupling nut is
If hydraulic hose is tightly embedded
in contamination. equipment, delay
replacement is covered in INSTALL
procedures, step C.4.a.
Tag and remove hoses, tubes, and fittings as
needed to replace faulty equipment or correct
hydraulic leaks. Plug and cap all open hose
fittings, tube fittings, and hydraulic circuit
Remove preformed packings from o-ring boss
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