Telsmith Vibrating Aggregate Screen 6 x 20 Quad Deck

Remove the two hex head capscrews holding the counterweight shim stack to the face of the counterweight.

Slide the shims out one at a time off the counterweight hub and lower to the floor.

Slide additional shims on the counterweight hub if required.

Fasten shims in position with the two hex head capscrews ensuring proper engagement with the counterweight hub.

Ensure cross bracing is provided if all support frames and drive unit/shaft casings are removed.

Determine sequence of wire support frame removal based on screen model and drive unit/shaft casing status.

Removal of Existing Wire Support Frame

Remove all cross braces from the bottom side of the screen frame.

Support the back plate with a hoist and lift straps, then remove capscrews and lower the back plate to the ground.

Support the discharge lip with straps and a hoist, remove capscrews and locknuts, then lower the discharge lip assembly to the ground.

Support the wire frame from above with lift straps at all four corners attached to a hoist.

Cut the huck bolts holding the wire frame to the vibrating frame side walls at the four corners and temporarily replace them with bolts, nuts, and washers.

Review Figure 8-55 for brace pattern

Identify brace types to be replaced

Clamp the brace being removed to the mounting tabs at both ends using a C-clamp

Remove all 3/4” capscrews holding the brace to the support frame

Remove the C-clamps from one end at a time while lowering the brace

Check for signs of oil breakdown

Measure temperature on the bearing housing face using a magnetic thermometer

Measure temperature on the bearing housing rim using a magnetic thermometer

Use a hand held digital heat scanning device to check for hot spots

Is any bearing cover showing more than 180°F (82°C)?

Determine the reason for overtemperature if any bearing cover exceeds 180°F (82°C)

Check vibrator oil for impurities (oil sample)

Check nuts and bolts for tightness or missing fasteners

Check that vibrating unit drive sheave is free of debris and tight on shaft bushing

Check that electric drive motor output sheave is tight on shaft

Component Inspection and Replacement

Inspect friction pucks. Replace if surface is worn below usable dimension

Check live frame for cracks or broken welds

Check that support structure is level from side to side