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6.
Replace the belt with a new one if the belt is stretched and has no allowance for adjustment, or has slipping
sound or squeak because of cuts or cracks of the belt.
Ask your Komatsu distributor for replacement of the belt.
When it has been replaced with a new part, there will be initial elongation. After 2 or 3 days of operation,
adjust it again.
7.
Install the cover (2).
METHOD FOR CHECKING LEVEL OF REFRIGERANT (GAS)
k
k
WARNING
• Be sure to handle the refrigerant (gas) according to the local regulations.
• If the refrigerant used in the air conditioner gets into your eyes or is splashed on your hands, it may
cause loss of sight or frostbite. Never touch the refrigerant. Do not loosen any part of the refrigerant
circuit.
• Do not bring any open flame close to any point where the refrigerant gas is leaking.
The sight glass (inspection window) is located on the pillar at
the rear left of the machine.
Check the refrigerant gas (Hydrofluorocarbons HFC -134a)
condition with the sight glass (inspection window) of the receiv-
er while the air conditioner is in operation.
(A) Blue: The air conditioner is operated normally.
(B) Pink: The receiver drier needs to be replaced.
If the sight glass (inspection window) is pink, contact your Ko-
matsu distributor for repair.
REMARK
The bubbles or condensation may be generated in the sight glass (inspection window), however, it does not in-
dicate that the refrigerant level is low. It is normal when Hydrofluorocarbons HFC -134a is used. Do not add the
refrigerant gas.
METHOD FOR CHECKING DURING OFF SEASON
Even during the off-season, operate the air conditioner for 3 to 5 minutes once a month to maintain the oil film at
all parts of the compressor.
METHOD FOR BLEEDING AIR FROM HYDRAULIC CIRCUIT
Bleed air from the circuit after the filter element or strainer, etc. has been replaced or cleaned.
Since the engine must be started and the blade must be operated, see OPERATION.
1.
Bleed air from the pump according to the following procedure.
MAINTENANCE PROCEDURE
MAINTENANCE
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Содержание D51EX-24
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Страница 57: ...OPERATION Please read and make sure that you understand the SAFETY section before reading this section 3 1...
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Страница 277: ...MAINTENANCE Please read and make sure that you understand the SAFETY section before reading this section 4 1...
Страница 353: ...SPECIFICATIONS 5 1...
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Страница 367: ...REPLACEMENT PARTS 7 1...
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Страница 382: ...D51EX 24 D51PX 24 BULLDOZER Form No EENAM03560 2017 KOMATSU All Rights Reserved Printed in Belgium 01 2017...