Komatsu PC490-11, Installation And Instruction Manual

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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 correct 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 of -10 °C (for general use) and -30 °C (for cold district). Use them properly according to the
area and season.
METHOD FOR CHECKING AND MAINTENANCE AIR CONDITIONER
Check, maintenance items
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 Content of check and maintenance Guideline for maintenance interval
Refrigerant (gas) Charge amount Twice a year (spring, autumn)
MAINTENANCE MAINTENANCE PROCEDURE
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