4.2 General safety & precautions

4.2 GENERAL SAFETY & PRECAUTIONS

Do not carry out any other inspection and maintenance procedures than specified in the manual. Carry out them parking the machine at a flat and conveniently situated place.

A.KEEP MACHINE CLEAN

Thoroughly clean machine before performing inspection and maintenance procedures. It is easier and safer to locate problems, perform maintenance and also reduce the risk of hydraulic system contamination when machine is clean.

B.CONFIRMATION FOR HOUR-METER

Read the hour-meter daily, and check with the scheduled maintenance book.

See “INSPECTION & MAINTENANCE

CHART” for better reference.

Proceed with any maintenance as required.

C.STOP ENGINE

Never attempt any MAINTENANCE with engine running. Always stop the engine and allow machine to cool. Otherwise, there is a possibility of danger that your hand may be caught in the cooling fan or fan belt resulting injury. If it is inevitable to operate the engine for the inspection or maintenance, carry out the work with a pair of two persons. And either person makes the engine ready to stop at any time at the signal of the partner.

D.“TAG-OUT” MACHINE

Before beginning any inspection or maintenance procedures, secure a “ DO NOT

OPERATE” tag to the operator’s console to inform the operator that the machine will be inoperable for inspection and maintenance.

This tag will help prevent accidental starting of the machine.

E.OBSERVE PRECAUTIONS

Start the inspection and maintenance work fully understanding the contents of safety precautions indicated on the machine decals.

HOUR METER

F15632

OPERATE DO NOT

F15635

J.CAUTION FOR OIL FILLING

When a strainer is provided on the filling port, do not remove it at refilling fuel, oil or fluid.

F.HOT SURFACES & FLUIDS

Use cautions and wear the proper safety equipment when working around hot areas.

Never change oils, engine coolant or filters immediately after machine has been stopped.

Allow machine to cool down before performing maintenance procedures.

WARM ENGINE OIL

Engine oil should have a temperature of between 20~40˚C (68~104˚F) before the oil is changed.

If necessary run engine until the oil is warm within the recommended oil change temperature.

G.USE CAUTION IN REGARD TO THE

INTERNAL PRESSURE

Release the internal pressure before removing the hydraulic system, air system, or fuel system; piping or coupling of the cooling system; other related parts to which internal pressure is applied. See the section IV

“RELEASING INTERNAL PRESSURE OF

HYDRAULIC SYSTEM”.

H.PREVENT CONTAMINATION

Always cap or plug lines when hydraulic components are removed to prevent hydraulic system contamination that can be caused by dirt, dust and debris entering a line or port.

I. INSPECT WASTE OILS AND FILTERS

Before disposal, inspect all waste oils, fluids and filters for debris and foreign material. It is recommended to cut open the oil filters to determine any abnormal wear.

K.DISPOSAL OF HAZARDOUS WASTE

Dispose of waste oils, fluids, lubricants, filters and other hazardous waste properly.

CAUTION

Dispose of all hazardous waste in accordance with government environmental regulations, laws and codes.

L.KEEP THE MOUNTING FACE CLEAN

After removing the O-ring or gasket, clean the installing face, and replace with a new one.

When installing the O-ring or gasket, apply a thin layer of oil to the seal, and install securely.

M.PROVIDING LOCKING DEVICE

When the inspection or maintenance is carried out under the attachment, provide proper support or blocks to secure the attachment.

OLD NEW

N.CAUTION AT CHANGING BUCKET

Never insert your finger into the pin bore.

When aligning the pin bores, never insert your finger, hand or arm into the pin bore. The alignment must be carried out visually.

O.DUSTY CIRCUMSTANCES

When the machine is operated in dusty circumstances, take the precaution of doing as follows. •Frequently check the alarm lamp for the air cleaner clogging. Clean up the air cleaner element more frequently than the specified interval. •Clean up the radiator core more frequently than the specified interval to prevent it from clogging. •Clean up and replace the fuel filter element more frequently than the specified interval. •Clean up the electric equipment, especially for starter and generator, not to allow deposit of dust on them.