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7. Remove the 2 proximity sensors from the mounting
plate and discard the hardware
8. Loosely secure the 2 proximity sensors to the bracket
with 4 bolts (M5) and 4 nuts (M5) as shown in
37.
Figure 37
1. Bolt (M5)
2. Proximity sensor
3. Nut (M5)
9. Route the wiring harness as shown in
and connect the proper connections to the proper
proximity sensors.
Note: Ensure that the harness does not interfere with
any hot or moving parts.
Figure 38
10. Secure the excess amount of the wiring harness with a
cable tie.
11. Use 2 (or more) people to adjust the proximity switches:
Important: Ensure that the gearbox is completely
forward in the carriage weldment.
Pipe-Breakout Sensor
A. Pull the drill pipe and lead bar back through the
pipe guide and into the wrenches until the pipe
joint is in the middle of the wrenches
(Figure
36).
Figure
4. Pipe-breakout proximity
sensor
5. Pipe-return proximity
sensor
Figure
38,
(Figure
39).
1. Rear wrench
2. Center of the wrenches
B. Adjust the pipe-breakout proximity sensor until
the light illuminates
1. Pipe-breakout light
C. Tighten the bolts and nuts on the sensor.
D. Torque the bolts to 791 to 971 N-cm (70 to 86
in-lb).
Pipe-Return Sensor
A. Pull the drill pipe and lead bar through the pipe
guide and through the wrenches until the front of
the pipe is lined up with the front of the rod box
(Figure
41).
15
Figure 39
3. Front wrench
(Figure
40).
Figure 40
2. Pipe-return light
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