Repair manual

Spiders and Gearboxes CRT Repair

wc_tx000583gb.fm 64

6.5 Adjusting Blade Angle

See Graphic: wc_gr003425

There are two methods that may be used to determine blade pitch. The

angle gauge method is recommended. The alternative to the angle

gauge method is the combination square method.

Angle gauge method (1):

6.5.1 Set the trowel on a flat surface and install the new blades.

6.5.2 Turn the blade pitch controls until the blades are at one-half the

maximum pitch.

6.5.3 Check the angle of each blade by placing an angle gauge (a) along the

front edge of the blade.

6.5.4 Adjust each blade arm as needed to match the measurement. To

adjust the blade arms, remove the shoulder bolt (b) and turn the link

Note: All blades must be set at the same angle for correct operation.

6.5.5 Once all blade angles have been set, apply Loctite 243 or an

equivalent to each shoulder bolt and tighten it. Torque the shoulder

bolts to 24 Nm (18 ft.lbs.).

Combination square method (2):

6.5.6 Set the trowel on a flat surface and install the new blades.

6.5.7 Turn the blade pitch controls until the blades are at one-half the

maximum pitch.

6.5.8 Position a combination square (d) as shown. With the combination

square positioned against the front (raised) edge of the trowel blade,

slide the moveable portion of the combination square down until it

contacts the top edge of the trowel blade. Once in place, lock the

moveable portion in place.

6.5.9 Check each of the other blades against this measurement.

6.5.10 Adjust each blade arm as needed to match the measurement. To

adjust the blade arms, remove the shoulder bolt (b) and turn the link

Note: All blades must be set at the same angle for correct operation.

6.5.11 Once all blade angles have been set, apply Loctite 243 or an

equivalent to each shoulder bolt and tighten it. Torque the shoulder

bolts to 24 Nm (18 ft.lbs.).