Operating manual No.
057-2-6-0013-R0
Version
2018
Page 29
EN
8.3
Piston replacement
In case the hydraulic piston must be replaced, proceed as follows:
1-
Lower the lifting platform to the minimum height position;
2-
Maintain the lowering control of the lift for another 6 seconds, to empty the
oil;
3-
A second operator must lift the lifting platform by hand up to about 500 mm from the
ground; the fall protection device (once the lift has been brought to the minimum
height) will be unhooked and will be able to fit inside the nearest pawl;
4-
The piston is empty, so it can be disassembled by unscrewing the support screws, the
pin (top) and the oil tube (bottom):
Figure 9
–
hydraulic piston
5-
The piston is replaced by tightening the screws and pin and reconnecting it with the
hydraulic circuit;
6-
Keep the ascent button pressed for as long as necessary for the piston to re-fill
and start the lifting operation;
7-
Then proceed with the operation of bleeding the hydraulic circuit
(Paragraph 8.2)
Piston maintenance:
It is recommended to consider the following aspects:
-
The results of the checks and maintenance must be planned and
documented;
-
Check the oil leaks from the oil nozzle and/or leaks on the heads
-
Set the lubrication intervals for spherical joints, supports and all components
that are not self-lubricated
-
The stem must always be retracted during long-lasting machine downtime
Summary of Contents for TWIN-ARMS MTA 516
Page 36: ...Operating manual No 057 2 6 0013 R0 Version 2018 Page 37 EN SPARE PARTS TECHNICAL DRAWINGS ...
Page 37: ...Operating manual No 057 2 6 0013 R0 Version 2018 Page 39 EN ...
Page 38: ...Operating manual No 057 2 6 0013 R0 Version 2018 Page 39 EN NOTES ...
Page 39: ...Operating manual No 057 2 6 0013 R0 Version 2018 Page 39 EN NOTES ...
