TM 5-6675-326-14
2-19.10 Replace Fan - Continued
j.
Remove four hex nuts and washer securing fan.
k. Remove defective fan. Retain sponge gasket.
INSTALLATION:
a.
b.
c.
d.
e.
f.
g.
Thread wires for new fan through housing. Attach terminal lug of white wire to terminal 6 and brown
wire to terminal 4.
Install new fan with old gasket in place. Secure with four hex nuts and washers.
Raise power panel, and secure to main power switch backplate with seven screws.
Reinstall main power switch, and secure with bezel retaining clip.
Reinstall quick-disconnect to power panel.
Reinstall connector below fan, and secure with two screws.
Plug in power cord, and turn power ON.
2-19.11 Redate Light Grid Assembly
PERSONNEL REQUIRED: 1 Topographic instrument repair specialist MOS 41B
TOOLS: No. 6 socket-head screw key
3/16-in. flat-tip screwdriver
9/64-in. flat-tip screwdriver
Diagonal cutting pliers
Soldering gun
MATERIALS/PARTS:
REMOVAL:
Light grid assembly
Filament tape, item 93, appendix E
Solder, item 19, appendix E
WARNING
ELECTRICAL SHOCK
Unplug power cord before servicing the split-stage light table. Failure to do so
may result in death or serious injury.
a. Turn power OFF, and unplug power cord.
2-70 Change 1
