26
450 BA
5. Malfuctioning, causes and actions
Remove the screw (713), extract the
spring (711) and the small piston
(710), by a M6 screw l = 60 mm
approx. Verify if the spring (711)
is broken, and the small piston
surface (710).
Replace what’s damaged.
The spring (711)
is broken or the
small piston (710) is
seized.
Bow doesn’t lift.
Check the oil level (325) and, if it’s
needed, add oil from the plug (324).
Unscrew the cutting pressure
regulator (702). Remove the spring
(704) and the sphere (705) and
clean the oil hole. Reassemble.
Make the frame lift completely
sometimes, in order to eliminate the
air bubbles in the hydraulic system.
The machine is new and needs
some days of running in. Then, the
problem disappears by itself.
Air in the hydraulic
system.
•
Bow descends
irregularly.
•
Bow delays to
descend.
Deficiency of oil.
Bow doesn’t
descend.
Impurities in the
control devices.
ACTIONS
REASONS
TYPE OF ERROR
Summary of Contents for 450 BA
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