TM 5-6675-316-14
4-20.2 Adjust X-Axis Chain.
MOS:
41B, Topographic Instrument Repair Specialist
TOOLS:
9/64 in. Hex Head Key Wrench
a.
Turn power off.
b.
Set carriage clutch switch to OFF.
c.
Loosen capscrews on sliding block until block can be moved.
d. Move block with fingers toward end of carriage until chain is tight.
e.
Hold block with one hand and tighten capscrews.
f. Turn power on.
Set carriage clutch switch to ON.
9.
Move optical mount to left and right with X-axis control knob. If
motion is jerky, chain is too tight.
If sprockets jump links, chain
is too loose.
h.
Readjust as required until optical mount moves smoothly to left and
right.
4-59
