CHAPTER 6
FIELD MAINTENANCE INSTRUCTIONS
Note. This chapter contains information for field maintenance. The amount
of repair that can be performed by units having field maintenance responsibility
is limited only by the tools and test equipment available and by the skill of the
repairman.
Section I. TROUBLESHOOTING
52. Tools, Test Equipment, and Materials Required for Field
Maintenance
Item
Signal Corps stock No.
Brush, stiff bristle _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 6Z1415-1
Brush, camel's - hair, -Inch_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 6Z1372
Screwdriver (TL-458/U) _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 6R15211A
Screwdriver (TL-105) _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 6R16410
Wrench, Allen _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 6R55075-2
Cloth, lint-free _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 6Z1989
Tissue, lens_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ __ _ _ _ _ _ _ _ _ _ _ 6M751
Cleaner, liquid, lens _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 8A819
Stick, orange,_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 6Z7360
Multimeter TS-352/U_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 3F4325-352
Photoelectric Foot Candle
Meter ME-86/U
Note. Tool Equipment TK-24/GF contains the tools necessary for field main-
tenance.
53. Preliminary Procedures
Before attempting repair of the equipment at the field maintenance
level, carefully follow the procedures in paragraphs 37 and 47. If
the equipment still fails to perform satisfactorily, refer to the trouble-
shooting chart (par. 54) to correct the difficulty.
54. Troubleshooting Chart
Correction
Probable trouble
Symptom
Lamp leads not securely
Tighten connections.
Projection lamp will not
connected et socket or
light.
switch terminals.
Defective lamp _ _ _ _ _ _ _ _
Replace lamp.
Open or short circuit_ _ _ _ _
Locate and repair.
Defective lamp socket_ _ _ _
Replace socket.
Tighten connections.
Motor leads not securely
Blower motor will not
connected at motor or
operate.
switch terminals.
Open or short circuit in
Locate and repair.
wiring leads.
Defective motor_ _ _ _
Replace motor.
TAGO 4736B
50
