page 22
3. Start with the gate either fully open or
closed.
4. Place the one end of the first section of
rack on the pinion. Let it mesh fully.
5. Level the other end and fix that end to
the side of the gate.
Refer to the sections that follow for instructions on how to fix the different types
of rack.
6. Slide gate halfway along the first section.
7. Level the unsecured end, ensuring that
the rack is resting on the pinion, not
pressing down.
8. Before fully fixing each section of rack,
slide gate backwards and forwards along
the section, checking that the rack is
only resting on the pinion, not pressing
down.
9. Continue this way to fix all sections.
FIGURE 22
Refer to the sections that follow for instructions on how to join the different
types of rack.
FIGURE 23
3mm
LOWER
3mm
tooth gap
10. Finally lower the operator 3mm to
achieve the required 3mm tooth
clearance.
11. Ensure that operator mounting bolts are
securely tightened.
FIGURE 21
