723–0018 /02 F70 163
Image 22-12
22.5.2 Cleaning the TIR prism
1. Use ionized air when cleaning the TIR prism.
2. If the unit is extremely dirty, use a nonabrasive optical wipe and optical cleaning solvent to clear the surface.
Image 22-13
22.5.3 Reassemble the TIR prism
1. Insert the prism in the engine housing.
2. Gravity naturally places the prism in the correct position towards the contact faces.
3. Push in the Prism Clip and fasten the 4 screws.
Lens shift assembly
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