Brush Drive Belt Adjustment - 260; Brush Drive System Maintenance - Nilfisk-Advance Convertamatic 260B Service Manual

BRUSH DRIVE SYSTEM
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MAINTENANCE
Once a month . . .
1 Lubricate the (2) pressure arm bearings.
Every 6 months . . .
1 Check the belt tension. There should be about 3/32 inch (2 mm) of belt deflection when 3-1/4 pounds of
pressure is applied between the pulleys.
2 Grease the guide bushings for the brush pressure control lever.
Once a year . . .
1 Check the carbon brushes in the brush motor. Replace the brushes if they are worn to a length of 3/8
inch (10 mm) or less.
2 Remove the fill plug from the top of the gear box and check the oil level. The oil should be 1-1/2 inches
(3.8 cm) from the top of the gear box. Use 140W gear lube only.
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BRUSH DRIVE BELT ADJUSTMENT - 260

1 Open the front access door.
2 See Figure 1. Loosen the (2) "A" bolts.
3 Turn the (2) large "B" bolts an equal amount of turns each to loosen or tighten the belt. If you are remov-
ing the belt, loosen the tension and remove the belt.
4 There should be about 3/32 inch (2 mm) of belt deflection when 3-1/4 pounds of pressure is applied
between the pulleys.
5 Tighten the (2) "A" bolts and test for proper operation.
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