7 General Maintenance
To Assemble the EI HES
5977B Series MSD Operating Manual 191
* The number in parenthesis is the number engraved on the lens
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 19 Parts list for EI HES (Figure 61) (continued)
Item number Item description Part number