5 General Maintenance
5975/5977 Series MSD Operating Manual 151
To Assemble an EI SS or Inert Source
Materials needed
• Gloves, clean, lint-free
• Large (8650-0030)
• Small (8650-0029)
• Hex ball driver, 1.5 mm (8710-1570)
• Hex ball driver, 2.0 mm (8710-1804)
• Wrench, open-end, 10 mm (8710-2353)
Procedure
Refer to the exploded parts view Figure 47 and EI SS and EI Inert parts list
Table 20 on page 152 while using this procedure.
1 Assemble the repeller assembly.
a Install the repeller block insert into the source heater block assembly.
b Install the repeller insulators into the source heater block assembly and
repeller block insert.
c Install the repeller through the repeller insulators, then put the flat
washer followed by the belleville spring washer onto the end of the
repeller shaft, and secure finger tight with the repeller nut.
2 Insert the drawout plate and the drawout cylinder into the source body.
3 Assemble the ion focus lens, entrance lens, and lens insulators.
4 Slide these assembled parts into the source body.
5 Install the setscrew that holds the lenses in place.
6 Install the interface socket.
7 Attach the repeller assembly to the source body using the two gold plated
screws and spring washers.
8 Install the filaments using the two gold plated screws and spring washers.
Do not overtighten the repeller nut or the ceramic repeller insulators will break
when the source heats up. The nut should only be finger-tight.
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