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Section 2 MAINTENANCE
The BM&M screen requires very little maintenance due to a minimum of moving
parts and robust construction.
DRIVE UNIT
The drive unit is a heavy duty double-row tapered roller unit encased in a solid
steel housing. It utilizes spring-loaded radial lip seals and comes prepacked with
grease. It requires no additional field lubrication or servicing.
DRIVE BELT
The drive belt consists of a single-reduction drive belt; a multi-section “B” size V-
belt. V-belts should be periodically checked for tension and alignment.
HANGERS
The needle-bearing universal joints will give trouble-free service providing they
receive periodic greasing with good quality wheel-bearing type grease every 400
hours of operation or every two weeks.
GENERAL MAINTENANCE
Periodically check all bolts for proper tightness. Check all bolts after initial 30
minutes of running and then once every three months of service thereafter. Refer
to the appropriate section for the torque settings.
It is essential that all bolts that secure the drive unit assembly are held to
the correct torque settings.
SCREENS
BM&M Super Screens are typically equipped with ball decks which utilize
captive, synthetic-rubber balls to help keep the screens clean. The screen mesh
(or perforated plate) rests on the top surface of the ball box frame. These frames
are made of steel but may also be made of aluminum or hardwood, depending
on the application.
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