If the source rod will not come down easily or not at all, the
bearings will need to be changed. Send the gauge to a Troxler
service center if the bearings need to be replaced.
Trigger Mechanism Assembly
This procedure is for replacing the trigger mechanism assembly
on serial numbers 10245 and 10256 and above.
1. With the source rod in the SAFE or backscatter position, use
a punch to drive the roll pin near the center of the handle to
either side and almost out. Remove the plastic end cap of the
handle. Before removing the punch, place your hand over
the end of the handle to prevent the spring from flying out.
2. Unscrew the trigger from the indexer in the handle and slide
the indexer out of the end of the handle.
3. Push the trigger up and pull it down to remove it. Tilt the
gauge to remove the spring and indexer.
4. To reassemble, place the indexer and spring back in with the
slanted face of the indexer facing up. Look through the hole
to align the indexer.
5. Screw the trigger back into the indexer.
6. Using a small screwdriver, press the spring beyond the lock
pin hole and hammer in the lock pin.
For gauges up to serial number 10255 (excluding 10245):
1. Place the gauge in the backscatter position.
2. Remove the lock pin from the index rod.
3. Unscrew the safety cap and raise the handle enough to be
free of the index rod.
4. Remove the roll pin from the trigger and replace the
indexer.
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