Multiquip STR46SPVGH - Manual (Page 30)

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STR46SPVGH • RIDE-ON POWER TROWEL — OPERATION MANUAL — REV. #0 (07/17/08) — PAGE 30
Figure 28. Pitch Towers
The torque sensitive pulley (Figure 27) utilizes a spring and cam
bracket. Peak performance results from proper interaction between
the driven pulley spring and the ramp angle of the cam bracket.
Figure 27. Pulley Spring and Cam Bracket
Blade Pitch - Single Pitch
    
On a Single Pitch

trowel each spider assembly can be pitched
individually, allowing the operator to make adjustments on each
pitch tower.
STR46SPVGH — MAINTENANCE
This clutch system provides a high pulley ratio (a low gear- so to
speak) to start out and a low pulley ratio ( a high gear- so to
speak) for a high speed operation, with infinite variation between
the two.
This means that it will not be necessary to give full throttle in
order to "break the blades/pans loose". The machine can slowly
be brought up to speed.
Clutch
1
2
3
4
5
1 Spring
2 Driven Pulley
3 Fixed Face
4 Moveable Face
5 Cam Bracket
Matching Blade Pitch for Both Sets of Blades
Sometimes it may be necessary to match blade pitch between
the two sets of blades. There are some signs that this may be
necessary.
■ There is a noticeable difference in finish quality between the
two sets of blades
■ The machine becomes difficult to control due to one set of
blades having a greater surface area contact with the
concrete creating more drag
1. Crank each Pitch Control Handle (A in Figure 28) until
each blade set is "bottomed out", i.e. No Pitch with the blades
flat against the concrete surface.
2. Crank BOTH Pitch Control Handles (B) in the SAME
direction EVENLY until the desired blade pitch is obtained.
Match Blade Pitch by performing the following:
B
B
A
A