Method For Checking Window Washer Fluid Level, Adding Fluid - Komatsu PC290LC-11 Operation & Maintenance Manual

MAINTENANCE PROCEDURE
1.
Set the work equipment in the position shown in the figure, then stop the engine and set the lock lever to
LOCK position (L).
2.
Shift O-ring (1) and measure the amount of play "a".
Measurement is easier if you move the bucket to one side so that all the play can be measured at 1 place
(the right side in the figure).
Use a clearance gauge for easy and accurate measure-
ment.
3.
Loosen plate mounting bolts (2) (4 pieces) and loosen
plate (3).
The shim is a split type, so the work can be performed
without removing the bolts.
4.
Remove shim (4) corresponding to the amount of play "a".
For shim (4), 2 types of 1.0 mm and 0.5 mm are installed.
When play "a" is smaller than 1 shim, do not adjust it.
5.
Tighten bolts (2) (4 pieces).
If bolts (2) are too stiff to tighten, pull out pin stopper bolt
(5) for easier tightening.
(6) Arm
(7) Bucket
[Example] In the case of play of 3 mm, remove 1.0 mm (2
pieces) shims and 0.5 mm (1 piece) shim. Play becomes
0.5 mm.

METHOD FOR CHECKING WINDOW WASHER FLUID LEVEL, ADDING FLUID

1.
If air is in the window washer fluid, 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
Normal
Winter in cold district
Winter in extremely cold district Pure washer fluid
There are 2 types of -10 °C (for general use) and -30 °C (for cold district). Use them properly according to the
area and season.
4-30
Mixing proportion
Washer fluid 1/3: water 2/3 -10 °C
Washer fluid 1/2: water 1/2 -20 °C
Freezing temperature
-30 °C
MAINTENANCE