3.Referring to Figure 23, remove and discard the two end reflectors and the gaskets underneath. If evidence of arcing is present, clean the gasket grooves with emery cloth to remove all oxide.

4.Insert both end reflectors, ensuring that they both seat fully and evenly. The replacement end reflectors must be installed before installing the new bulb and reflectors and the new RF Gasket.

5.Install the two pre-cut (long) RF gaskets into the grooves for the end reflectors. Insert one end flush with the top of the mounting surfaces (Figure 22). Working toward the other end of the groove, press the gasket strip down firmly with the thumbnail so that it rests at the bottom of the groove.

Profile of properly installed gaskets

Figure 22. Gasket Installation

6.Examine the cross-guide gaskets for evidence of arcing. Replace if there is any evidence of wear or arcing (dark or burned spots). Also if there is evidence of arcing on the back side of the reflector caused by the cross-guide gaskets (behind the reflector), then replace them.

Install the two pre-cut RF gaskets (short ones) into the grooves for the extrusions. Insert one end flush with one edge of the mounting surfaces. Working toward the other end of the groove, press the gasket strip down firmly with a thumbnail so that it rests at the bottom of the groove.

IMPORTANT: The dichroic reflector and the R350 reflector do not have plastic protective covers on the reflector surface. The dichroic reflector has a dark purple reflective coating. Do not attempt to remove the purple reflective coating.

Installation, Operation, and Maintenance Manual # 509252 Rev R

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