jcb JS200 Service Manual page 392

Section E
79 - 1
Maintenance Specifications
In order to ensure long life of the hydraulic ram, carry out inspection and maintenance regularly. If an abnormal point is found,
repair as soon as possible referring to the troubleshooting chart.
Inspection,
Maintenance Point
Appearance
Operation
Hydraulic Oil
Installation with
Main Body
Piston Rod
Ram Cylinder
(Including Piping)
9803/6400
Hydraulic Rams
Maintenance Contents
Is the ram kept clean (especially the rod sliding part)?
Is there oil leakage from piping installation and fixing points?
Is there any peeling paint, separation or rust?
Are the movements smooth and are there any abnormal sounds?
Is the response good?
Is there oil leakage from the sliding parts?
Is there internal leakage?
Is the working pressure normal?
Is the set pressure for the overload relief valve normal?
Is the hydraulic oil dirty or deteriorated?
Is the hydraulic oil replaced periodically?
Are the filters inspected periodically?
Is the pin greasing sufficient?
Is there any abnormal sound at the pins or seizure?
Is there backlash or wear in the pins?
Is the pin seal normal?
Are the installation screws loose or missing?
Tightening of the installation screws?
Are the sliding parts worn?
Are there scratches or dents on the sliding parts?
Is there coating separation on the sliding parts?
Are the sliding parts bent?
Are there cracks in the welding or other damage?
Are the bolts, nuts loose?
Are the bolts, nuts tightened?
Are there cracks in the welding or other damage?
Are there big depressions or dents in the cylinder?
Hydraulics
Inspection,
Section E
79 - 1
Note
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
When the rod
O
sliding part is
O exposed for a
long period of
O
time apply
anti-rust oil to
O
the rod.
O
O
O
O
O
Issue 1