User Manual

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Landis+Gyr Chapter 9 - Sprague Mini Switch Kit Installation
Installation Guide 98-1357 Rev AA 59
Installing Dual Set Screw Magnetic Pulse Wheels on
Plastic Pointer Indexes
1. Using a small flat blade screw driver, turn each screw counter-clockwise until the tip of each
screw is flush with the inner surface of the wheel.
Figure 9 - 9. Top View - Dual Set Screw Pulse Wheel
Figure 9 - 10. Bottom View - Dual Set Screw Pulse Wheel
2. Position the Dual Set Screw pulse wheel over the plastic index proving/test pointer as shown in
the following figures. The bottom of the pulse wheel is slotted so that it may only be installed
with the slot in the same direction as the index pointer.
3. Insert the 0.030 inch thick shim beneath the pulse wheel.
4. Gently press the wheel against the shim with your index finger or thumb. The pulse wheel must
be level with the surface of the index.
5. Evenly tighten each screw to 1.2 ± 0.10 inch-pounds.
U WARNING: The main index drive shaft must remain free to rotate as the wheel screws are
tightened to prevent damage to the index pointer and pointer shaft
Figure 9 - 11. Tighten Pulse Wheel Screws to 1.2 ± 0.10 Inch-Pounds