2. Checking the amount of the refrigerant
Refrigerant easily frostbites the skin, especially the eyes; in addition, it will emit
toxic phosgene in case of meeting the open fire. Therefore, under any situations
that the cooling system needs to be demolished, please recover the refrigerant
firstly in the case that the refrigerant will not spay to the skin and eyes, and then
demolish the cooling system. Please make sure that there is no open flame during
the whole process.
If the refrigerant is insufficient, the cooling
performance will be very poor. Therefore, check
the amount of the refrigerant every month or
every 250 hours.
In the case of the engine idling at high speed,
operate the air conditioning in the state of strong
cooling, check and determine the amount of
refrigerant according to the bubbles on the sight
glass of the drying bottle.
3. Checking, adjusting the tension of
the air conditioning compressor belt
Check and adjust the tension of the air
conditioning compressor belt every 250 hours.
A. Checking
Press the belt in the middle between the driving
wheel belt and the compressor belt with the finger
force of 12N, and check if the deflection if about
5-7mm.
Check if the belt is damaged. If the belt has been
stretched without the margins for adjustment or it
has cuts or cracks on its surface, please replace
with a new belt.
B. Adjusting
Adjust the nut No. 2, the max. Deflection when a
force of 6kg is applied to the max. Belt span
should be 10mm, and then tighten the two No. 2
nuts.
5-48
Summary of Contents for YC310LC-8
Page 5: ...1 Foreword 1 1...
Page 10: ...1 6...
Page 13: ...1 9...
Page 17: ...2 Safety Regulations 2 1...
Page 28: ...31 Toolbox sign 30 Sign of escaping direction 2 12...
Page 35: ...2 19...
Page 41: ...12 Do not dig towards the machine body 2 25...
Page 47: ...23 Do not use the excavator to drag other devices or objects 2 31...
Page 56: ...2 40...
Page 59: ...3 Components Description 3 1...
Page 61: ...Monitor 3 3...
Page 68: ...reset 2 Throttle knob 3 Igniter 3 10...
Page 77: ...3 19...
Page 84: ...4 Operating Guide 4 1...
Page 94: ...1 Turning when the machine is stopped 4 11...
Page 116: ...4 33...
Page 123: ...5 Maintenance 5 1...
Page 134: ...Checking the fastening of the cylinder cover Checking the fastening of the engine support 5 12...
Page 136: ...5 14...
Page 139: ...5 17...
Page 144: ...5 22...
Page 154: ...5 32...
Page 158: ...5 36...
Page 174: ...6 Accessory Guide 6 1...