When fitting new v belts, ensure that the tension on the drive pulley has
been released as forcing a new belt over the pulley can result in damage to
the belt/ pulley. Remember to check the tension of the new belts after 2
hours as new belts do stretch.
Taper locks
All drive and driven pulleys are held in place using heavy duty taper lock
bushes. The taper lock bushes are tightened fully before the Topper leaves
the factory; however, they are under a considerable load and need to be
checked regularly. Check the tightness of the taper lock bushes after the
first hour of use and again 8 hours later. Following this, check the taper lock
bushes every 40 hours
Installation
•
Clean and degrease the bore and taper surfaces of the bush and the
tapered bore of the pulley. Insert the bush in the pulley hub and line
up the holes (half thread holes must line up with half straight holes).
•
Lightly oil the grub screws or the cap screws and screw them in. Do
not tighten yet.
•
Clean and degrease the shaft. Fit pulley with taper bush on shaft and
locate in desired position.
•
When using a key, it should be fitted first into the keyway in the shaft.
There should be a top clearance between the key and keyway in the
bore.
•
Using an allen key, gradually tighten the grub/ cap screws in
accordance with the torque settings listed below.
•
In order to eliminate the ingress of dirt, fill all empty holes with grease.
Bush
Tightening
Torque
Quantity
of screws
Size of
screws
1008
5.6 Nm
2
¼” BSW
1108
5.6 Nm
2
¼” BSW
1310
20 Nm
2
3/8” BSW
1315
20 Nm
2
3/8” BSW
1210
20 Nm
2
3/8” BSW
1215
20 Nm
2
3/8” BSW
1610
20 Nm
2
3/8” BSW
1615
20 Nm
2
3/8” BSW
2012
31 Nm
2
7/16” BSW
2517
48 Nm
2
½” BSW
3020
90 Nm
2
5/8” BSW
3030
90 Nm
2
5/8” BSW
3535
112 Nm
3
½” BSW
4040
170 Nm
3
5/8” BSW
4545
192 Nm
3
¾” BSW
5050
271 Nm
3
7/8” BSW
Page 27