MODEL M6 21
Protective Collars
The special protective collars protect bearings from vine and wire wrap, and dirt buildup next
to the bearing seal. The bearing protector is sandwiched onto the shaft which rotates within
a close clearance from the outer race of the bearing. Grease coming from the bearing oozes
into the protecting collar, keeping dust and particles from entering the seal area, increasing the
bearing life.
Left Roller Bearing
1. Remove drive chain. Then remove lower sprocket by removing cotter pin, slotted hex
nut, and washers.
2. Remove the two bolts holding the chain case to the frame.
Have roller blocked up or supported.
3. Slide chain case and bearing off roller shaft.
4. Loosen bolt on the bearing tube that holds cartridge bearing in place.
5. Remove bearing and O-ring.
To replace, reverse the procedure. Be sure all parts and wear surfaces are thoroughly clean
and in good condition.
When replacing bearing, rst put O-ring on bearing. Apply a coat of grease on O-ring. Slide
bearing in and apply moderate pressure on bearing so O-ring will seat and spread slightly, thus
keeping the oil in chain case from escaping through the bearing.
Right Roller Bearing
1. Remove the hex bolt and bearing cap from outside of bearing.
2. Loosen bolt on the bearing tube that holds cartridge bearing in place.
3. Pry bearing tube apart to free bearing assembly.
Have roller blocked up or supported.
To replace, reverse the procedure. Be sure all parts and wear surfaces are thoroughly clean
and in good condition.
MAINTENANCE
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