Alamo Industrial A-Boom, Operator'S Manual

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MAINTENANCE
ABOOM 03/09 Maintenance Section 4-10
©2009 Alamo Group Inc.
MAINTENANCE
TIMBER CAT HEAD
Lubrication/Daily Checks (Figure Mnt-0007)
Lubricate the grease fittings on top of the blade bar
every 4 hours. See
Figure Mnt-0007
.
Every 8 hours, lubricate the cylinder grease fitting
through the top slot in the cover. See
Figure Mnt-
0007
. Ever y 8 ho urs, che ck all b olts an d nu ts fo r
proper tightness. T ighten any bolt or nut found to
be loose. Periodically check the hydraulic connec-
tions for oil leaks. V isually inspect the hos es for
damage a nd r eplace as necessary. Pe riodically
inspect bla de str oke adju stment by ru nning th e
head a t normal op erating speed ( 540 PT O) an d
checking t hat the u pper and lower b lades lin e-up
perfectly the instant of reversal (when they change
direction).
Improper adjustment is also indicated by an abnormally high shock load on the hydraulic system during blade
reversal. This is due to the h ydraulic cylinder reaching its stroke limit, causing the p ressure relief reversing
components to engage. Continuous operation in this mode will result in oil overheating and premature failure
of components. If the unit is improperly adjusted, follow the stroke adjustment procedures below.
Stroke Adjustment (Figure Mnt-0008)
Position the head in a safe a rea for op eration. If
necessary, b arricade the head t o p revent c ontact
while it is being operated.
Remove the cover a nd loosen the two jam nuts
(Item 1 ). See
Figure Mnt-0008
. Screw the two
spring bolt assemblies (Item 2) in toward the valve
push buttons. Start the unit and bring the speed up
to normal operating speed (540 PTO). Ch eck the
blade over lap. Adjust the spring b olt a ssemblies
(Item 2) , o ne b y o ne u ntil th e up per an d lowe r
blades p erfectly align in the in stant of re versal.
Never adjust the bolt as semblies to a point where
the hydraulic c ylinder r eaches it 's st roke limi t! This is indic ated by an abnormally h igh sho ck load on th e
hydraulic system due to the pressure relief reversing components being engaged. Continuous operation in this
mode will cause premature component failure and hydraulic oil overheat. Once proper adjustment has been
achieved, tighten the jam nuts (Item 1) and replace cover.