MAINTENANCE

Precautions for Handling Long Life Coolant (LLC) d WARNING: Long life coolant (LLC) is poisonous. fNOTE: *The LLC mixture ratio filled for the machines shipped from the factory is 35 %.

• If ingested by mistake, induce vomiting and get emergency medical attention immediately.

• If antifreeze is accidentally splashed into eyes, flush with water sufficiently and get emergency medical attention.

• When storing LLC, be sure to keep it in a clearly marked container with a tight lid. Always keep LLC out of the reach of children.

• Use attention to fire hazards. LLC is specified as a dangerous substance in the fire protection law.

• When disposing of LLC, be sure to comply with all local regulations.

In case a machine destination is nominated as a cold weather district, the mixture ratio is increased to 50 %.

Maintenance

Check Coolant Level --- every 10 hours (daily) d WARNING: Do not remove radiator cap (1) until the coolant temperature in the radiator become cool. Hot steam may spout out, possibly causing severe burns. After the coolant temperature cools, slowly loosen cap (1) to release the inside air pressure before removing cap (4).

Check the coolant level at reservoir tank (2). The normal coolant level is between FULL and LOW marks on the side surface of reservoir tank (2).

In case no coolant is present in reservoir tank (2), supply the coolant via the cap hole on reservoir tank (2).

• When refilling long life coolant (LLC), use the same brand product and the same mixture ratio as already used in the machine. (35 % Concentration)

• If only water is refilled, the mixture ratio in the long life coolant (LLC) is diluted so that anti-rust and antifreeze effect in the coolant will become deteriorated.

Maintenance

Check Fan Belt

--- every 10 hours (daily)

Check the fan belt for any abnormality. If any cracks are found, replace the belt with a new one.

Check Fan Belt Tension

--- every 250 hours or 3 months

IMPORTANT: Loose fan belt may result in insufficient battery charging, engine overheating, as well as premature belt wear. An excessively tight belt, however, can damage both water pump and alternator bearings and fan belts.

Check fan belt (1) tension by depressing the midpoint between alternator pulley (2) and crank pulley (3) with the thumb. Normal deflection must be 7 to 9 mm (0.3 to 0.35 in) with a depression force of approximately 98 N (10 kgf ) (22 lbf).

Adjust Fan Belt Tension

--- every 500 hours or 6 months (or whenever slack is found) fNOTE: When a new belt is installed, be sure to readjust the belt tension after operating the machine for 3 to 5 minutes at low idle speed to be sure that the new belt is correctly seated.

1. Loosen alternator (4) mounting bolts (5) (2 used).

2. Adjust belt tension by moving alternator (4) forward or backward.

3. Tighten mounting bolts (5) (2 used).

Maintenance

Change Coolant

--- every 1000 hours or 1 year d WARNING: Do not remove radiator cap (1) until the coolant temperature in the radiator become cool. Hot steam may spout out, possibly causing severe burns. After the coolant temperature cools, slowly loosen cap (1) to release the inside air pressure before removing cap (4).

1. Park the machine following the same procedures as described on page 7-5 for preparation of inspection/ maintenance work.

2. Install the articulation lock bar to the front and rear of the frames following the procedures described on page 7-5.

3. Remove radiator cap (1). Loosen the radiator drain cock (2). Open the drain hole located at the left bottom of the rear frame and drain plug (3) at the engine water jacket to drain coolant. Remove impurities such as scale at the same time.

Maintenance

Clean Radiator and Oil Cooler --- every 100 hours or 1 month or if the core becomes clogged dCAUTION: When using compressed air pressure [less than 0.2 MPa (2 kgf/cm2) (29.1 PSI)], wear safety glasses or goggles.

IMPORTANT: If compressed air with the pressure of more than 0.2 MPa (2 kgf/cm2) (29.1 PSI) or with high delivery pressurized tap water is used for cleaning, damage to the radiator/oil cooler fins may result. Keep the nozzle away from the core surface more than 500 mm.

IMPORTANT: If the machine is operated with radiator/oil cooler are clogged, damage to the engine or radiator may result.

In case dirt and/or dust is adhered to the radiator (1) and oil cooler (2) cores, clean them with compressed air [less than 0.2 MPa (2 kgf/cm2) (29.1 PSI)] or tap water to prevent a reduction in cooling system performance.