Komatsu PW118MR-11, Operation & Maintenance Manual, Page: 353 / 462

METHOD FOR CHECKING WINDOW WASHER FLUID LEVEL, ADDING FLUID
If air is in the window washer fluid, check the fluid level in window washer tank (1).
1.
Check the fluid level in window washer tank (1).
2.
If the level is low, add window washer fluid for automobile.
Be careful not to let dirt or dust get in when adding fluid.
Mixture ratio of pure washer fluid and water
The proper mixing proportion varies with the ambient temperature. Add washer fluid diluted with water at the
following proportion.
Area, season Mixing proportion Freezing temperature
Normal Washer fluid 1/3: water 2/3 -10 °C
Winter in cold district Washer fluid 1/2: water 1/2 -20 °C
Winter in extremely cold district Pure washer fluid -30 °C
There are 2 types depending on the freezing temperature: -10 °C (general use) and -30 °C (cold district use),
select according to the area and season.
METHOD FOR CHECKING AND MAINTENANCE AIR CONDITIONER
Check and maintenance items
Some maintenance items of the air conditioner need to be inspected periodically and the others are performed
irregularly. Inspect and service the air conditioner according to the following list to use it effectively.
Control and maintenance
points
Content of check and maintenance Guideline for mainte-
nance interval
Refrigerant (gas) Charge quantity Twice a year (spring, au-
tumn)
Air conditioner condenser Fins blocked Every 500 hours
Compressor Operating condition
V-belt Damage, tension Every 250 hours
Blower motor, fan Operating conditions (can strange noises be heard?) When required
Control mechanism Operating conditions (is it operating normally?) When required
Piping connections Mounting condition, looseness at tightening or con-
necting portions, leakage of gas, damage When required
Even during the off-season, operate the air conditioner for 3 to 5 minutes once a month to maintain the oil film at
all parts of the compressor.
RKA65160
MAINTENANCE MAINTENANCE PROCEDURE
4-25
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