Bike-Lift M516-001, Use And Maintenance Manual

Page: 32 / 50

Operating manual number
057-2-6-0001-R0
Page 32
Version 2021
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 12 – 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 which
are not self-lubricated.
- The stem must always be retracted during long-lasting machine downtime.