6 - Maintenance
126
Tightening Hydraulic Hoses
When tightening hydraulic hoses as a part of periodic service or due to
replacement of spare parts, it is important to apply the correct torque.
This will prevent accidents and prolong the lifetime of the parts connected with the hoses.
If not otherwise stated in this book, please tighten hydraulic hoses using
the following torques:
€
DANGER! A hydraulic hose or joint leaking or coming apart with
the oil under pressure can cause severe injuries to persons
standing nearby! The oil can be very hot, around 80 °C, and the oil streaming out can penetrate human skin. Risk of
burns on the skin, internal injuries and facial injuries.
±
WARNING! Applying too little torque will result in these risks:
±
WARNING! Applying too much torque will result in these risks:
±
WARNING! When assembling a hydraulic joint, this is often being twisted around in different directions to make it fit
between other components on the sprayer. Remember to finish off by applying the correct torque.
÷
NOTE! The sealing system for hoses and fittings is ORFS type (O-Ring Face Seal). This ensures a high level of sealing
and good vibration resistance. The fittings use the O-ring compression mechanism to seal.
Hose size
Thread size
Spanner size
Recommended torque
1/4 “
9/16 “
19 mm
28 Nm
3/8 “
11/16 “
22 mm
44 Nm
1/2 “
13/16 “
24 mm
62 Nm
3/4 “
1.3/16 “
36 mm
130 Nm
1 “
1.7/16 “
41 mm
170 Nm
•
hydraulic joints will leak due to the high oil pressure.
•
hydraulic joints will rattle and thus fail under fatigue.
•
hydraulic joints are being worn quickly and thus will not fulfil their design purpose.
•
accidents caused by sudden loss of oil pressure due to hydraulic parts coming apart.
•
damaging or stripping the threads and deforming the hydraulic joints.
•
fittings will be broken.
•
hydraulic joints will leaks.
•
accidents caused by assembled parts coming apart due to bolts breaking at a later time.
Summary of Contents for MEGA VPZ MASTER
Page 4: ...1 EU Declaration 4...
Page 10: ...Table of Contents 10...
Page 42: ...2 Safety Notes 42...
Page 68: ...3 Description 68...
Page 118: ...5 Operation 118...
Page 121: ...6 Maintenance 121 Lubrication Plan Boom Centre Close up of Glide Shoes to be Lubricated...
Page 172: ...8 Technical Specifications 172...
Page 176: ...Index 176...
Page 178: ...HARDI INTERNATIONAL A S Herthadalvej 10 DK 4840 N rre Alslev DENMARK...