TM 9-2320-209-34-2-3 FRAME 2 1. Clean tube (1) of flame detector switch (2) with wire brush. Check that tube is straight. Get new flame detector switch if tube is not straight. 2. Clean bow spring (3) with wire brush. Check that bow spring Get new flame detector switch (2) if bow spring is bent. 3. Check that microswitch (4) clicks by pressing in on shaft (5). should also click when shaft is let out. Get new flame detector if microswitch does not click. is straight. Microswitch switch (2) 4. Check that quartz rod (6) is not broken or shipped. Get new quartz rod if it is broken or chipped. GO TO FRAME 3 21-77