2.
Check the condition of the refrigerant gas (Hydrofluorocar-
bons HFC-134a) that circulates the refrigerant circuit,
through the sight glass (2) (inspection window) at the re-
frigerant hose fitting.
(A) No bubbles in refrigerant flow: Suitable
(B) Some bubbles in refrigerant flow: Insufficient (bubbles
pass continuously)
(C) Colorless, transparent: No refrigerant
REMARK
When there are bubbles, the refrigerant gas level is low, so ask your Komatsu distributor to add the refrigerant.
If the air conditioner continues to run with low refrigerant gas level, it will cause damage to the compressor.
METHOD FOR CLEANING AIR CONDITIONER AIR FILTERS
If the air filter at the suction port of the air conditioner unit or the air filter at the fresh air intake port become
clogged, the cooling or heating capacity will drop, so clean the filters.
1.
Open the cover (1) on the side of the cab.
2.
Pull out the air filter (fresh air filter).
3.
Clean the air filter (fresh air filter) with compressed air.
4.
Open the cover (2) at the rear left of the operator's seat.
5.
Pull out the air filter (recirculation air filter).
6.
Remove the dust sticking to the air filter (recirculation air
filter) with low compressed air or a soft brush.
METHOD FOR CHECKING DUMP BODY
Check that there are no cracks in the dump body.
1.
Clean the dump body so that you can check it easily.
2.
Check each portion of the dump body for damage.
MAINTENANCE
MAINTENANCE PROCEDURE
4-29
Summary of Contents for HD325-8
Page 2: ......
Page 13: ...FOREWORD INTRODUCTION 1 11 ...
Page 25: ...LOCATION OF SAFETY LABELS SAFETY SAFETY LABELS 2 3 ...
Page 26: ...SAFETY LABELS SAFETY 2 4 ...
Page 340: ......
Page 424: ......
Page 425: ...SPECIFICATIONS 5 1 ...
Page 429: ...ATTACHMENTS AND OP TIONS Before reading this chapter read and understand the SAFETY 6 1 ...
Page 447: ...REPLACEMENT PARTS 7 1 ...
Page 463: ......