2-9. DIRECT SUPPORT TROUBLESHOOTING
TEST OR INSPECTION
1. ELEVATlON BRACKET (1) DOES NOT SLIDE
Rotate elevation knob (2) from stop to stop.
Adjust three self-locking nuts
M146 TELESCOPE MOUNT
2. YOKE 3) CANNOT BE ROTATED THROUGH
180 DEGREES WITHOUT BINDING.
Move yoke from side to side.
a. Remove burrs from mating surfaces.
b. Replace headed grooved pin and
related parts located inside yoke pin
3. TAPERED PIN (KING PIN) (5) BINDS.
Remove tapered pin (king pin) (5) and inspect for
smooth rotation of knob.
a. Remove burrs from tapered pin.
b. Replace worn or damaged parts as
4. ELEVATION KNOB 2 IS ERRATIC AND ROUGH
Rotate elevation knob from stop to stop.
Adjust elevation shoulder screw
Replace damaged elevation shoulder