MAINTENANCE/SERVICE
68
Suspension Adjustments
Boom suspension consists of two types of
suspension systems. They are the vertical
suspension and the horizontal suspension. Both
are suspension systems that use the compression
of rubber components for energy absorption
a) Swing
Cushion:
The swing cushion is located at the mast end
of the swing cylinder. The swing cushion is
assembled and adjusted at the factory. Correct
adjustment of the horizontal suspension is
critical to the life of the boom structure.
b) Vertical
Suspension:
Rough and uneven terrain will send shock into
the boom structure. The vertical suspension
cushions the boom from the shock of fast and
abrupt vertical motion.
The vertical suspension is located where the
booms connect to the mast. There are two
positions for the linkage to attach to the
suspension. Adjust the linkage position
according to the amount of vertical motion of
the booms that is acceptable. The draw bolt is
used to adjust the height of the boom off the
ground. Keep the booms in a horizontal or
slightly tipped up position by adjusting the
nut on the eyebolt.
Horizontal Suspension
Vertical Suspension
