k. Reconnect wiring in proper order to terminal board. Secure with
terminal screws and reinstall cover.
Plug in power cord.
4-16.7 Replace Drive Chain.
41B, Topographic Instrument Repair Specialist
7/16 in. Combination Wrench
SUPPLIES: Drive Chain
Death or serious injury may occur from electrical shock unless power cord
is unplugged before servicing.
Unplug power cord.
b. Loosen retaining bolts and slide magnification drive motor to right
to loosen drive chain.
c. Remove drive chain from sprockets.
d. Install new drive chain on sprockets.