Crafco MODEL 30 PAVEMENT ROUTER, Parts Manual

Page: 32 / 63

32
INSTALLING NEW CUTTER HEAD AND MAIN SHAFT
MODEL 30 PAVEMENT ROUTER
The cutter head and main shaft are sold in matched sets and must be installed together.
1. Slip the bearings on to the main shaft in the new cutter head.
2. Push the handle down all the way to the ground to raise the front of machine.
3. Roll new cutter head assembly under machine and into position.
4. Line up bearings with cutout sections in the flywheel housing, fitting each into its slot as
machine is lowered over flywheel.
5. Reinstall three cap screws that attach bearings to flywheel housing.
6. Center cutter head in housing and move main shaft so that it is flush with bearing on
side opposite sheaves.
7. Replace locking ring mechanism on each bearing (if equipped).
8. If bearings do not use a locking ring, follow this procedure: Using 1/4” electric drill and
13/64” drill bit, make dimple in shaft under one or more set screws. Remove two set
screws on each bearing and coat with a thread adhesive such as Locktite. Replace set
screws and tighten until snug.
9. Reinstall hub and lower sheave. Be sure the sheaves are in alignment using straight
edge.
10. Tighten cap screws that pull the sheave onto bushing alternately and progressively until
tapers are seated. Check alignment and sheave run out or wobble and correct as
necessary before tightening cap screws to recommended torque value of 15 ft. - lbs.
each.
11. Reinstall wheel and tire assemblies.
12. Install V-belts and tighten tension using the jam nuts underneath motor mount. Correct
belt tension is 1/4” deflection per belt when 10 lbs. pressure is applied.
13. Install belt guard.
14. Install cutters, shafts and spacers as outlined in changing cutters, page 27.