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MQ SP4030 SAW • OPERATION MANUAL — REV. #0 (01/22/09) — PAGE 47
MAINTENANCE
Removal and Replacement
To ensure correct blade shaft/wheel alignment, this
operation should be performed by and authorized service
center.
Blade Alignment
Maintaining proper blade and drive system alignment will
allow the saw to cut lines that are straight without much
effort. Therefore the blade shaft flanges MUST be
equadistant to the sides of the saw, (+/- .030"). See Figure
50 below where distance A must equal distance B.
The second requirement for the blade is that it MUST be
square to horizontal (90
o
to flat surface). See Figure 50.
A
B
90
o
Figure 50. Blade Alignment Requirements
A
A + .187”
X
X
Figure 51. Wheel Alignment Requirements
DRIVE SYSTEM ALIGNMENT
In addition to blade alignment, maintaining proper blade
and drive system alignment will allow the saw to cut lines
that are straight without much effort. Therefore the front
wheels and blade shaft axles MUST be at right angles to
the frame edge.
In Figure 51 you see the distance “A” on the right side is
shown as “A + .187"” which means that the distance
between centers of the front and rear drive axles are 3/16"
longer than on the opposite side. This will have the effect
of causing the saw to “steer” slightly to the left. After
becoming familar with the saws particular sawing
characteristics, the operator may wish to have this alignment
altered to fit his own preferences or to fit a particular
application.
Drive System Alignment Adjustment
The drive wheels are aligned by adjusting the entire rear
drive assembly.
1. Loosen the wheel mount assembly attachment bolts
just enough to move the wheel mount assembly. Do
not completely loosen the bolts.
2. Loosen and tighten the alignment jackscrew nuts to
move the wheel mount assembly, and thus the wheels,
in the appropriate direction to achieve the desired
alignment distance (Figure 51).