Hardi FTZ Force Boom, Руководство оператора и по техническому обслуживанию, Страница: 22 / 35

Adjustments
5. 8
5 - Maintenance
Priming procedure
1. Remove the damping cylinder from the sprayer and secure it
vertically in a soft jawed vice as shown.
2. Close the damping adjustment screw by backing off the lock
nut and winding the screw in until it seats.
3. Pass a screw driver through the link ring (A) at the end of the
hydraulic shaft and operate by hand to determine the amount of
free play (un-restricted movement) present (B). The maximum
free-play allowable is 5.0 mm.
4. If required, continue by drawing the shaft up and down through
it’s full range of motion twice, resting at the bottom again.
5. Remove the end cap (C) and top up with a suitable grade oil
such as Castrol Hi-spin AWH-M68 or equivalent.
6. Replace the end cap.
7. Repeat steps 4,5 & 6 until no more oil can be added.
Priming continued
8. Next, turn the cylinder over in the vice 180 degrees and secure
it again in the soft jaws.
9. Using a screw driver as before, operate the shaft twice through
it’s full range of movement, this time leaving it fully extended.
10. Remove the service port plug (D) and top up with oil as
previously described (Castrol Hi-spin AWH-M68 or equivalent).
11. Replace the service plug (D).
12. Repeat steps 9 to 11 until no more oil can be added.
13. Reverse the cylinder one last time and repeat steps 4,5 & 6
until no more oil can be added.
Priming continued
14. Finally turn the cylinder to the horizontal position and secure
it in the vice.
15. Using a suitable tool, lock the piston manually and check the
free play / stroke. It should be a maximum of 5mm.
16. Remember to reset the damping adjustment / throttle valve.
See setup section for details.
Servicing Damping Cylinder
The performance of the damping cylinder may be adversely affected by the presence of air space within the
cylinder’s internal hydraulic circuit. This condition may be improved by the following ‘priming’ procedure but note
that the cause of the condition should be investigated and rectifi ed if necessary. If the cylinder is found to have
failed completely and no sign of signifi cant oil leakage is present, internal by-pass may be suspected and overhaul
/ replacement of the piston seal may be necessary.
Note: If a solenoid controlled pendulum lock is fi tted but not functioning, no power supply or a defective solenoid
should also be investigated.
A
B
C
D