Spider CT Repair
wc_tx000553gb.fm 84
7.5 Balancing the Blade Pitch
See Graphic: wc_gr003357
To prevent wobble and for optimum performance balance the blade
pitch. Carry out the following procedures whenever the blades or any
of the arms have been replaced, or if the trowel is not performing as it
should.
To balance the blade pitch:
7.5.1 Place the trowel on a flat surface.
7.5.2 Adjust the pitch control (Pro-Shift
®
or twist pitch control) so that all the
blades lie flat (0° pitch).
7.5.3 Mark on the floor the outline (a) of two blades that are 180° a part from
each other. Label one of these blades “1”. Continue to label the
remaining blades in order: “2”, “3”, and “4”.
7.5.4 Adjust the pitch control (Pro-Shift
®
or twist pitch control) so that all the
blades pitch approximately 15°.
7.5.5 Position the handle directly above the blade labeled “1”.
7.5.6 Measure the distance (x) from the handle (at the stop switch (b)) to the
floor.
7.5.7 Rotate the entire trowel 90° counterclockwise. The brake will engage
and the blades will slide across the floor. Position the blade labeled “2”
in the outline on the floor of the blade labeled “1”.
7.5.8 Rotate the handle clockwise (it will rotate freely) and position it directly
above the blade labeled “2”.
7.5.9 Measure the distance (x) from the handle (at the stop switch) to the
floor.
7.5.10 Repeat the procedure for each blade.
7.5.11 Use the eccentric adjuster (c) on each arm to adjust the distance
between the handle and the floor. Tighten the mounting screw (d) after
making the adjustments. For consistency, only make adjustments
when the blade being adjusted is within the outline of the blade labeled
“1” and measure to the same spot on the floor each time.
7.5.12 Make any adjustments required until the distance between the floor
and the handle is within 1.5 mm (0.062 in.) for all of the blades.
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