. MAINTENANCE SERVICE PROCEDURE CHECK REFRIGERANT (GAS) LEVEL WARNING If the cooling effect is poor, there is probably lack of refrigerant (gas). In this case, check sight glass (2) of receiver drier (1) near the left side of the radiator guard. Before carrying out inspection, set to the following conditions. 4 - 30 If t he 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 loo sen any part of the refrigerant circui t. s leaking. Do not bring any flame close to any point where the refrigerant gas i s leaking.
Start the engine and run i Turn the air conditioner O Set the air flow to the ma Set the temperature to th t at approx. 1,500 rpm. N/OFF switch to the ON positio ximum position. e lowest position. ows fully. witch ON. Open the doors and wind Turn the air conditioner s If the condition of sight gla ss (2) is "correct" as shown in condition is normal.
(After th the e air diagram on the right, the conditioner switch is turned ON, a small number of bubbles w ill be seen, but after that, the fluid color.) becomes a transparent, milky white white If the condition of sight glas s (2) is "insufficient" as shown i is lack of refrigerant, so ask n the diagram on the right, there your Komatsu distributor to cha conditioner switch is tur continuously.) rge with refrigerant. (After the air ned ON, bubbles can be seen e air seen CHECK DUMP BODY Check that there are no crac 1. Clean the dump body to 2. Check all parts of the du If any cracks or abnorma Contact your Komatsu d . Clean the dump body to .
Check all parts of the du l wear are found, carry out repa istributor for details of the repair