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Section 1 Maintenance
SCC1000C Crawler Crane — Maintenance Manual
3 Lubrication and Maintenance Form of Various Components
3�1 Precautions for Inspection and
Maintenance
3�2 Purpose of Crane Maintenance
-- Perform on level and solid ground in an
environment that is clean and free from
disturbances.
-- While carrying out inspection and maintenance
on the hydraulic parts, try to perform in an
environment that is clean and free from
disturbances.
-- It is very dangerous to check and adjust the
crane when it is operating with a load. Check
and maintenance can only be performed after
shutting off the engine and removing the load.
At the same time, display a sign of “Under
Inspection and Maintenance” at the door of the
cab.
-- It is strictly prohibited to adjust the components
in the hydraulic system such as pump, valves,
motor etc.
The purposes of crane maintenance are:
-- Make preparation for the operation.
-- Keep optimal performance.
-- Avoid downtime.
-- Maintain the service value of the crane.
-- Reduce repair expenses.
3�3 Lubrication
3�3�1 Check Status of the Crane
The crane operator should inspect the crane daily
by a visual check according to the lubrication and
maintenance schedule.
For example:
-- Check the oil level and oil quality.
-- Check the tank and filtering system, to ensure
these systems are kept clean and operate
properly.
-- Check the hoses and pipelines for leakage.
-- Check the installation of the transmission devices
(i.e. reducers, the engine, valves).
-- Check whether the rope is lubricated, whether
there is strain, abrasion or signs of abnormal
wear.
These regular visual checks often can detect
damages early, so that the problem can be solved
quickly.
In this way it can reduce the need for a shutdown
due to the failure of the crane.
3�3�2 Preventive Maintenance
Preventive maintenance includes some measures
in “Check Status of the Crane”.
Checking the crane status can detect abrasion,
damage or defect early, and can solve these
problems as soon as possible.
This can help the crane under operation to avoid
breakdown and repair.
Various related measures must be taken.
For example:
-- Check the safety devices.
-- Compare the desired value and actual value of
the hydraulic system and electric system, such
as voltage, hydraulic system pressure etc.
-- Check the functions of the hydraulic system and
electric system.
-- Check the ination pressure of the accumulator.
-- Analyze the quality of the hydraulic oil and
transmission oil.
-- Check the noise level and vibration level of
various transmission cases.
-- Check the bearings for damage and abrasion.
-- Check the crane components for damage and
abrasion.
-- Check the wire ropes for damage and abrasion.
Keep records of the proper visual check and
functional check process as well as the check
results.
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