Yetter 2963 Challenger - Manual (Page 14)

14
MAINTENANCE
CHALLENGER OPENER
LUBRICATION: USE #2 MULTI-PURPOSE LITHIUM GREASE
To ensure longevity and reliability of the Challenger Opener, the recommended
lubrication schedule should be followed using multi-purpose grease at hourly intervals
as indicated.
BEARING ADJUSTMENT:
1. Raise the toolbar until the blade is clear of the ground. Place a safety stand under
the toolbar. Remove the hubcap, cotter pin, slotted nut and washer from the hub
assembly. Remove the blade from the hub assembly.
2. Remove bearing cones and seals from hub.
3. Wash the old grease from the hub, bearing cups, spindle spacers, seals and
bearing cones. Inspect the condition of the bearing cups, cones and seals.
Replace if necessary.
4. Apply #2 multi-purpose lithium grease on each bearing. Make sure the space
around each roller is filled. Lubricate the bearing cups.
5. Position the bearing in the cup and install the seal. Lubricate the seal lips and
proceed with re-assembly of the removed parts including the blade. Blade bolt
torque is 90 to 96 ft. lbs.
6. Tighten the slotted nut to 15 ft. lbs. or until a definite drag is felt when the blade is
turned by hand. Tighten the nut one slot position to line up the cotter pin hole with
a slot. Secure the nut with a new cotter pin, replace hubcap.