Check Refrigerant (Gas) Level; Check Dump Body; Check Electric Intake Air Heater - Komatsu HD785-5 Operation & Maintenance Manual

MAINTENANCE

CHECK REFRIGERANT (GAS) LEVEL

If the refrigerant used in the air conditioner gets into your eyes or on your hands, it may cause loss of sight or frostbite. Do not
touch the refrigerant. Never loosen any part of the refrigerant circuit.
Do not bring any flame close to any point where the refrigerant gas is leaking.
If the cooling effect is poor, the level of the refrigerant (gas) is
probably low.
Check the sight glass of the receiver dryer on the inside left of the
radiator guard.
REMARK
Run the engine at idle, and if bubbles appear in the sight glass
when the air conditioner is set to cooling, the refrigerant level is low,
so please contact your Komatsu distributor to have it refilled.

CHECK DUMP BODY

Check that there are no cracks in the dump body.
1. Clean the dump body to make it easier to check.
2. Check all parts of the dump body for damage.
If any cracks or abnormal wear are found, carry out repairs.
Contact your Komatsu distributor for details of the repair procedure.

CHECK ELECTRIC INTAKE AIR HEATER

Before the start of the cold season (once a year), contact your Komatsu distributor to have the electrical intake air
heater checked for dirt or disconnections.
WARNING
SERVICE PROCEDURE
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