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16.6 TENSIONING THE VERTI-DRAIN
®
UNIT V-BELT DRIVE
A
1
2
3
Fig. 24
To ensure the Verti-Drain
®
unit operates at its best capacity, the 3 V-belts used in
connection with the driven shaft and crankshaft must have the correct tension.
Follow the following steps to achieve this: (See fig. 24)
1. Remove the nuts (2) and the safety cap (1).
2. Loosen the nut on the tensioning pulley (3) and move the pulley down until the
correct pre-tension has been achieved.
3. Tighten the nut on the pulley (3) correctly.
4. Check the V-belt tension by hanging a mass of 2.5 kg (5.5 lbs) on point A. The
extension must be 2 mm.
5. Position the safety cap (1) and tighten the nuts (1).
