General Maintenance 4
5977B Series MSD Troubleshooting and Maintenance Manual 135
To Remove the Ion Vacuum Gauge
Procedure
1 Vent the MSD.
2 Disconnect the cable on the back of the ion vacuum gauge.
3 Unscrew the red plastic thumbnut on the gauge clamp.
4 Remove the long screw from the clamp.
5 While supporting the gauge body, remove the clamp from the mounting
flange.
6 Remove the gauge.
7 If you will not be replacing the gauge soon, install the blanking plate
provided with the gauge and secure it with the clamp, screw, and
thumbnut.