7 General Maintenance
To Disassemble the EI HES
5977B Series MSD Operating Manual 183
* The number in parenthesis is the number engraved on the lens
4 Ceramic insulator for extractor G7002-20064
5 Entrance lens assembly, Extended, HES (1)* G7004-20065
6 Ion focus lens (2)* G7004-20068
7 Lens insulator/holder G7002-20074
8 M2 x 0.4 screw x 12 mm long gold plated screw G7002-20083
9 Source body G7002-20084
10 Post extractor lens 2 (3)* G7004-20090
11 Post extractor lens 1 (4)* G7004-20004
12 M2 x 6 mm gold plated screw G7002-20109
13 Locking ring lens insulator G7002-20126
14 High efficiency dual filament G7002-60001
15 Ring heater/sensor assembly G7002-60043
16 Source mount 1.5 mm G7002-60053
17 Repeller assembly G7002-67057
Not shown HES assembly G7004-67056
Table 18 Parts list for EI HES (Figure 57) (continued)
Item number Item description Part number
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