Komatsu PW130ES-6K Operation & Maintenance Manual page 199

SERVICE PROCEDURE
3. Loosen the four plate fixing bolts of (2) and loosen plate (3).
Because it uses split shims, you can carry out the operation
without removing the bolts entirely.
4. Remove shim (4) corresponding to the amount of play (a)
measured above.
[Example]
If the play is 3 mm, remove two sets of 1.0 mm shim (4 pieces)
and 0.5 mm (2 pieces) and the play will become 0.5 mm.
Four sets of 1.0 mm (8 pieces), two sets of 0.5 mm (4 pieces) are
installed. Two pieces of shim makes one set.
When play (a) is smaller than one shim, do not carry out any
maintenance.
5. Tighten the four bolts (2).
If the bolts (2) are too stiff to tighten, pull out pin stopper bolt
(5) for easier tightening.
CHECK WINDOW WASHER FLUID LEVEL, ADD
FLUID
If air is ejected with the window washer fluid, check the fluid level
in window washer tank (1). If showing under the level, fill with
automobile window washer fluid.
When adding fluid, be careful not to let dirt or dust get in.
Mixture ratio of pure washer fluid and water
G
Since the ratio should be varied depending on atmospheric
temperature, replenish washer fluid at the following mixture
ratio, taking temperature into account.
Operation area and season
Normal
Winter in cold region
Winter in extremely cold region
Pure washer fluid comes in two types: for -10°C (for general use)
and for -30°C (cold regions).
Use pure washer fluid according to operation area and season.
CHECK AND ADJUST AIR CONDITIONER
CHECK LEVEL OF REFRIGERANT (GAS)
If the liquid get into your eyes or on your hands, it may cause
loss of sight or frostbite, so never loosen any part of the
refrigerant circuit.
The air conditioning system is equipped with pressure switches
198
Mixture ratio
Pure washer 1/3: water 2/3 fluid
Pure washer fluid 1/2: water 1/2
Pure washer fluid
WARNING
MAINTENANCE.
Freezing
temperature
- 10° C
- 20°C
- 30°C