Method For Checking Window Washer Fluid Level, Adding Fluid; Method For Checking And Maintenance Air Conditioner - Komatsu PC138US-11 Operation & Maintenance Manual

MAINTENANCE PROCEDURE

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.
Take the following precautions when filling.
• Be careful not to let dust enter.
• Be careful that the window washer fluid level does not
exceed the top edge of the bracket (2).
REMARK
There is an air bleeding hole on the cap of window washer
tank in order to prevent breakage caused by negative
pressure in the tank when window washer is operated. The
washer fluid may leak from the air bleeding hole according
to its volume or the vibration of the machine, however, it
does not indicate abnormality.
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
Normal
Winter in cold district
Winter in extremely cold district Pure washer fluid
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

SERVICE ITEM
Some maintenance items of the air conditioner are to be inspected periodically and the others are to be inspect-
ed when required. Check and maintenance the air conditioner according to the following list to use it effectively.
Check and mainte-
nance items
Refrigerant (gas)
Air conditioner con-
denser
Compressor
4-30
Mixing proportion
Washer fluid 1/3: water 2/3 -10 °C
Washer fluid 1/2: water 1/2 -20 °C
Content of check and maintenance
Charge amount
Clogged fins
Operating condition
Freezing temperature
-30 °C
Guideline for maintenance interval
Twice a year (spring, autumn)
Every 500 hours
"METHOD FOR CHECKING AND CLEANING
RADIATOR FINS, OIL COOLER FINS, AFTER-
COOLER FINS, FUEL COOLER FINS, AND AIR
CONDITIONER CONDENSER FINS (4-53)"
Every 4000 hours
WENAM00111
MAINTENANCE