Komatsu WB93R-5, Operation & Maintenance Manual

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MAINTENANCE PROCEDURES
232
4.8.14 MAINTENANCE EVERY 4000 HOURS OF OPERATION
Carry out these operations together with those to be performed every 50, 250, 500, 1000 and 2000 HOURS.
4.8.14.a CHANGING THE A/C DEWATERING FILTER (Only for machines with air condi-
tioner)
WARNING
q
The coolant used in the air conditioning system is very dangerous. If it is sprayed into the eyes or in
case of contact with the skin, it may cause blindness or frostbite.
To avoid any explosion, do not generate sparks and do not use naked flames near the air conditioner.
q
Oils, filters, the coolant and the battery are considered special waste and must be collected and dis-
posed of according to the regulations in force.
q
Have the dewatering filter changed only by specialized personnel and for this purpose contact your Ko-
matsu Dealer.
The filter (1) must be changed every 4000 hours of operation or
every 2 years, whichever occurs first.
The filter must also be changed whenever operations involving
the opening of the air conditioning system are performed.
4.8.14.b CHECKING THE OPERATING CONDI-
TIONS OF THE A/C COMPRESSOR
(Only for machines with air conditioner)
Specific equipment is required to check the operating conditions
of the compressor (1); have the compressor checked only by spe-
cialized personnel and for this purpose contact your Komatsu
Dealer.
4.8.14.c CHANGING THE ENGINE THERMOSTATIC
VALVE
This procedure must be carried out by qualified personnel. Have
this operation performed by your Komatsu Dealer.
1
RKAB5010
1
RKAB5020
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