Operator's Manual

Figure 27

1. Check plug

2. Fill plug

Torque Set Screws

After the first 10 hours of operation, and every 50

hours thereafter, torque the set screws securing the

taper lock bushings to driven pulleys to 37 ft. lbs. (50

N-m) (2 each pulley) (Fig. 28).

Figure 28

1. Bushing set screws

After the first 10 hour of operation, and every 50

hours thereafter, torque the set screws securing drive

shafts to gear box shafts to 20-25 ft. lbs. (26-32 N-m)

(4 each side) (Fig. 29).

Figure 29

1. Drive shaft set screws

Adjusting Pulley Scrapers

To prevent build-up of dirt sand or other debris in the

pulley grooves, make sure the pulley scrapers are

adjusted correctly.

1. Loosen the lock nut securing the pulley scrapers

to the mounting bracket (Fig. 30)

Figure 30

1. Pulley scrapers

2. Slide the pulley scrapers until they almost

contact the sides of the pulley groove(s).

3. Tighten the nut to lock adjustment.

Adjusting Belt Tension

Check belt tension after every few hours of operation.

Make sure belts are properly tensioned to assure

correct operation of unit and unnecessary wear, and

whether they may cause poor hole quality in some

conditions.

Maintenance

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