35 (39)
Hakki Pilke 27
Original
Version 5-2014
Disturbances in the Splitting Mechanism, Their
Reparation and Prevention
When changing the direction of the splitting movement, the joint lever swings
from one extreme position to the other, thrust by the spring force.
Repair the fault by turning the head of the bolt to a new position. Make sure that
the centre position of the joint lever does not move more than approx. 2 mm in
either direction. Should the centre position move more, the oil will flow through
the valve to the cylinder and the splitting beam will move slowly forward from its
initial position or it will continue its reverse movement until the piston and the
piston rod of the cylinder reach their extreme position. There is no space for oil in
the cylinder in the extreme position, and the pressure will start to rise, thus
stressing the entire hydraulic system. As the pressure rises, the power requirement
of the machine will increase, and at the pressure of 180 bar the pressure relief
valve will open, letting the oil flow through.
If the machine performs the
splitting movement and neither
the splitting release pedal nor
the automatic release lever have
been touched, the reason can be
one of the following:
Either
the
head
of
the
adjustment bolt by the side of
the joint lever has become
rounded at its upper part, or the
release lever bar has become
rounded at its lower part.
When rounded, the bolt head
and bar cannot keep the joint
lever in the centre position;
when the joint lever approaches
from the left, it continues
straight to the right edge, and a
new
splitting
movement
commences.
As the joint lever
slams into its
extreme position, a
limiter bolt must
cushion its
movement.
Adjust the position of the joint
lever with the limiter by approx.
2 mm towards the centre position
to make the swing blow hit the
bolt in the head.
Remember to adjust both sides!
If the ball joint has
broken:
Remove its cover box and
replace the ball joint with a
new one.
Should the joint lever
slam into its extreme
position without being
cushioned by a bolt, the
ball joint moving the
valve spool will break.
The
whole
splitting
system will be paralysed
if the ball joint breaks.
