5 General Maintenance
124 5975/5977 Series MSD Operating Manual
To Disassemble the EI HES
Materials needed
• Gloves, clean, lint-free
• Large (8650-0030)
• Small (8650-0029)
• Cloths, clean (05980-60051)
• T6 Torx driver, (8710-2548)
• Tweezers (8710-2460)
Procedure
Refer to the exploded parts view Figure 37 and the EI HES parts list Table 16 on
page 126 while using this procedure.
1 Place a clean cloth on your work surface to hold the ion source parts.
2 Use a T6 Torx screwdriver to remove the screw securing the filament block
to the source mount, and using the finger grip, remove the filament block.
3 Remove the dual filament from the filament block by lifting the source body
up off of the filament block, while holding the filament block so that the dual
filament will not fall and become damaged.
4 Remove the finger grip from the filament block.
5 Use a T6 Torx screwdriver to remove the two screws securing the source
mount to the source body.
6 Use the finger grip to remove the source mount from the lens body.
7 Remove the repeller and ring heater sensor assembly from the source body.
8 Separate the repeller from the ring heater assembly.
9 Use a T6 Torx screwdriver to remove the screw and locking ring for the lens
insulator that secures the lens stack in the source body, then remove the lens
stack.
10 If necessary, use gravity to remove the lens stack ceramic insulator from the
source body.
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