Precision II Operation and Maintenance Manual C
4-4
996-0255 rev. b
15) Place laser head near base cradle and reattach lamp
connectors at each end. Make sure lamp electrodes are dry
before sliding lamp connectors over lamp ends.
16) Place the laser head in base cradle and begin to screw the
thumb wheel counter clock wise to reattach the laser head
to its cradle. Gently rock the laser head as you tighten the
thumbwheel.
17) Reattach the thermal switch at the white plastic connector.
18) Flow test the laser head. If the lamps leak, repeat the
procedure from step 7. If the laser head leaks from around
the cradle, repeat the procedure from step 15.
19) Log the date and the shot count from the RB601 and the
procedure is complete.
C. Rod replacement
Equipment needed:
• Replacement rod
• Exploded head drawings, pages 3-3 to 5
• HeNe laser
• New rod “O”rings
• “V” block
• 2.5mm Allen wrench
• Lens tissue
• Cotton swabs
• Distilled water
• Finger cots
1) Study exploded head drawing.
2) The YAG rod is a parallelogram cut at a 2° angle.
• hold rod vertically at eye level and slowly rotate.
Note the “high side”
• on a optical bench position a HeNe laser beam
parallel to the bench and at “V” block beam height
• lay rod horizontally in “V” block and position so
that HeNe passes through rod
• rotate rod so that HeNe reflection off rod face is
reflected downward to its lowest position
• using a pencil, mark 12 o’clock position of rod as
the “high” side.
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