DOSKO 620-20HE - Page 20

Maintenance & Repair (cont’d)
20
The wheels should be greased by repacking the bearings inside the wheel
hub with grease.
Grease Specification
Soap Type
Lithium Complex
NLGI Grade
#2
Dropping Point
230°C (446°F)
Additives
Corrosion and Oxidation
inhibitors, EP optional
Viscosity Index
80 Minimum
Check and adjust
brake
Check that the brake is functioning properly.
- Lock the brake, push down on handle bar so that cutter wheel
is off the ground.
- Push or pull the grinder- if the brake is loose, the wheel will
rotate.
Grease zerks
Cutting
wheel
Bearing
Hub
Cotter
pin
Castle
nut
Dust
cap
Bearing
Washer
1. Remove existing cap, cotter
pin, castle nut, washer, and
hub off spindle.
2. Inspect inner and outer
bearing and pack with grease.
3. Slide hub and washer back
onto spindle.
4. Using a torque wrench,
tighten the castle nut 30-40
foot-lbs.
5. Loosen the castle nut until
loose enough to turn the
castle nut with your fingers.
6. Re-tighten the castle nut
finger tight.
7. Reinstall cotter pin and dust
cap.