About Bearings
2-22
990 APEX Service Manual
Pulley and Idler Shafts
Transport systems on the machine contain pulleys and a belt to transport the door in and out of the
machine. Each pulley contains an idler shaft that has a zerk fitting to apply grease. An opening in
the idler shaft dispenses grease to the inner diameter of the pulley.
Important:
It is important not to overfill the Idler Shaft to avoid getting excess grease
on the belts
FIGURE 2- 18.
Pulley in Action
FIGURE 2- 19.
Exploded View of the Pulley
Pulley
Idler Shaft
Grease Out
Grease IN
Pulley Exploded View
Summary of Contents for 990-APEX
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