SANY SY500H Operation And Maintenance Manual Download

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MAINTENANCE

5-5

SY500H Excavator OMM

Securing Access Covers and
Compartment Doors

When servicing the machine with any access cover or
compartment door open, use the lock bar to secure the
cover or door in the open position. Covers and doors that
are not locked open can close unexpectedly and cause
injury.

Installation of Hydraulic Hoses

When disconnecting or connecting hydraulic hoses
sealed by O-rings, clean the surfaces before installing
new O-rings.
Never kink a hydraulic hose during removal or
installation. Hydraulic hoses that have been kinked can
be damaged internally and can have a considerably
shorter service life.

Inspection and Maintenance in
Adverse Environments

If the machine will be operating under adverse
conditions:

• Check and clean all electrical components and

connections. Clean electrical components and
connections that show corrosion.

• Check and clean areas that are exposed to high levels

of heat, such as the exhaust manifold and
turbocharger, and keep them clear of combustible
materials.

For heavy-load operation and deep excavation, grease
the work equipment pins before operating. Cycle the
boom, arm, and bucket several times before adding
additional grease.

Mud, Rain, or Snow Conditions

After operating the machine, clean the machine and
inspect for missing or loose hardware. Add oil and
lubricating grease as needed.

Near Ocean (Salt Air) Environments

Before operating the machine, inspect for any sign of
corrosion. Apply grease where corrosion is found.
After operating the machine, thoroughly wash away any
salt residue, apply grease where corrosion is found, and
perform maintenance on electrical components to
prevent corrosion.

Dusty Environment

Clean or replace the following components:

• Immediately service the air filter and air filter housing if

the air filter alarm indicates service is required.

• Clean the fins and other cooling system parts on a

regular basis to avoid overheating.

• Replace the fuel filter on a regular basis or as required.

• Clean the electrical components, including the starter

motor and the alternator, to prevent dust buildup, and
check terminals for corrosion and loose connections.

• When servicing the machine, park the machine in a

dust-free location to prevent contamination of open
components.

Rocky Ground Surface

The track should be set slightly looser than what is
required for other environments. While track sag is
normally 0.75 in.–1.75 in. (19 mm–45 mm), SANY
recommends that you loosen the track tension to 1.75 in.
(45 mm) for rocky ground surfaces only. Inspect the
tracks for damage, such as cracks and loose or missing
fasteners.

Cold Environments

In extremely cold environments, such as 32°F (0°C),
lubricate only with the oils shown in “Engine Oil
Viscosity/Temperature Data” on page 5-7. SANY
recommends the use of fuels identified in “Fluids and
Lubricants” on page 5-6 for extremely cold environments.
Prior to starting the engine, make sure the battery is fully
charged and that the battery and its cables have not
cracked.

Other Weather Environments

NOTE:

If there are bearings or bushings that are
overheating, loose, or corroded during regular
inspection, perform repairs and increase the
lubrication frequency.

Based on past experience and suggestions by lubrication
suppliers, the lubrication intervals listed in the following
tables apply only to normal operating conditions. In harsh
environments, including those with dusty or corrosive air,
abnormal external temperature, extremely heavy
overload, frequent operating times, or extended duty
cycles, the lubrication intervals should be shortened.