Komatsu PC118MR-8 Operation And Maintenance Manual page 220

USE OF THE MACHINE AND RELATED CONTROLS
Running-in
Komatsu machines are adjusted and tested completely before shipment. However, operating the machine
under severe conditions at the beginning can adversely affect the performance of the machine and
shorten its life.
The running-in stage should last for the first 100 hours of operation (as indicated by the hour meter).
During running-in, follow the instructions given in this manual.
q After the start, let the engine idle for 5 minutes, in such a way as to warm it up gradually before actual
operation.
q Avoid operating the machine with the limit loads allowed or at high speed.
q Immediately after starting the engine, avoid sudden starts, sudden accelerations, unnecessary sudden stops,
and sudden changes in direction.
Synthetic biodegradable oil type HEES
For machines in which synthetic biodegradable oil type HEES is used, perform the following operations in addition
to the standard maintenance operations:
q After the first 50 hours of operation, change the hydraulic circuit drain filter.
q After the first 500 hours of operation, change the hydraulic circuit oil.
NOTICE
q When changing the oil filters (cartridges), check their inner part to make sure that there are no
deposits.
If considerable deposits are observed, find out what may have caused them before starting the
machine.
q The number of operating hours is indicated by the hour meter. (See "Hour counter, clock (3-23)").
Stability and engine noise control
q Verify that there are no unusual noises when the engine is started, when the engine is idling or when the rpm
is increased slightly.
q Check that the engine starts easily and smoothly; if abnormal noise is heard, contact Komatsu distributor for
inspection.
Engine acceleration and deceleration check
q Check that the engine speed increases regularly when the throttle lever is moved from minimum to maximum.
q Perform these checks in a safe place, being careful not to damage the surrounding areas.
q In case of malfunction of the engine at low speed and in acceleration, and when these conditions persist, the
engine may be damaged or the operations performed are likely to become dangerous and cause accidents;
contact your local Komatsu distributor for inspection.
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CAUTION
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FUNCTIONING
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