102
Agilent 7820 GC Service
Set the Y-shaped clamp to one side.
Carefully separate the lens housing from the stainless steel
coupling. The focusing lens and O-ring usually stick to the
coupling, but could stay with the lens housing. Try to keep the
housing, flange ring, screws and washers in place.
Remove the brown O-ring on the lens housing with a small pick.
Roll the new seal over the edge of the housing until it sits in the