Manitowoc Shuttlelift CD5515-2 Service And Maintenance Manual

PREVENTATIVE MAINTENANCE CD5515-2/YB5515-2 SERVICE MANUAL
5-4 Published 1-20-2017, Control# 483-02
After the reservoir is filled, operate all circuits and recheck
the reservoir sight gauge. Add hydraulic oil as required.
Removing Air From the Hydraulic System
Air entering the hydraulic oil will normally be removed
automatically by passage of the hydraulic oil over the baffles
in the hydraulic reservoir. If a component has been replaced,
the reservoir level is too low, or a leak develops in the suction
lines to the pumps, air can enter the system. If air becomes
entrapped in the hydraulic oil, it may be detectable in pumps
and motor operated components such as the swing
mechanism and hoist(s), because it can cause these units to
become noisy during operation. If noisy operation occurs,
first check the level of the hydraulic reservoir and replenish
as necessary. Then inspect for leaks in the suction lines
leading to the pumps.
Minute leaks may be hard to locate. If a leak is not readily
detectable, use the following way to check for it:
• Seal all normal openings in the hydraulic system and the
reservoir. Using a positive means to control the pressure
(like a regulator), pressurize the hydraulic system to
0.138 to 0.276 bar (2 to 4 psi) and inspect all joints and
fittings for evidence of leaks. A soap solution applied to
the fittings and joints may also prove helpful in detecting
minute leaks while the system is pressurized. Remove
the pressure, repair any leaks found, and reopen any
openings (such as a vent) closed for inspection. Refill
the reservoir after completing any repairs or service.
Operate all hydraulic circuits several times in both
directions.
• This action should return any entrapped air to the
reservoir where it can be removed from the hydraulic oil
by the baffles.
• To remove entrapped air from telescope cylinders, lower
the boom to below horizontal and fully telescope the
boom in and out several times.
• If the air is not readily removed, lower the boom to below
horizontal, extend the telescope cylinders as far as
practicable, and allow the boom to remain in this position
overnight. This should allow entrapped air to find its way
to the holding valve so that telescoping the boom IN the
next morning should force the air back to the reservoir.
Ensure the boom is first telescoped IN (not OUT) in the
morning. Telescoping OUT may cause air to be forced
back into the cylinder.
• Entrapped air may be removed from cylinders having
wet rods by cycling. On certain cylinders, a plugged port
is provided on the rod end to bleed off entrapped air.
• In the event that air entrapment should persist, bleeding
of air by loosening various clamp and screw type fittings
may become necessary.
• If the above procedures fail to eliminate air entrapment,
contact your authorized Manitowoc distributor.
Parts Replacement
Parts found damaged or out of tolerance when maintenance
is being performed should be replaced. Refer to the Grove
Parts Catalog for proper replacement parts.
SPECIAL MAINTENANCE
Delivery Inspection
Fuel Tank
• Fill with correct fuel.
Engine
• Check oil in crankcase. Fill if level is low.
• Remove water from fuel filters and sediment bowl.
Cooling system
• Check coolant level. Fill if level is low.
Hydraulic Tank
• Check oil level. Fill if level is low.
Drive Axles
• Check axle housing lubricant level and wheel hub
lubricant level. Fill if levels are low.
Hoist Gearbox
• Check oil level. Fill if level is low.
Tires
• Check for correct air pressure.
CAUTION
Always locate the machine on a firm supporting surface,
extend the outriggers and level the machine and position
the boom over the front to extend the boom at low angles.
Injury or damage to the machine may result if this caution
is not followed.
CAUTION
Do not attempt to loosen fittings in pressurized lines or
while the hydraulic pumps are in operation.
Extreme care must be used when removing any plugs or
restrictions from a hydraulic system suspected to have
entrapped air that may be pressurized. Moderate to minor
injury may result from pressurized air in a hydraulic
system.
Reference Only

Manitowoc Shuttlelift CD5515-2 Specifications

General

Brand	Manitowoc
Model	Shuttlelift CD5515-2
Category	Construction Equipment
Language	English