TM 55-2210-224-34
3-25. ENGINE TEMPERATURE WARNING, MOTOR KILL, SAFETY, AND FIELD SHUNT TRANSITION RELAYS
(Cont)
CLEANING, INSPECTION, AND REPAIR
WARNING
· Drycleaning solvent P-D-680 is toxic and flammable. Wear protective goggles and gloves and
use only in a well-ventilated area.Avoid contact with skin, eyes, and clothes and don't breathe
vapors. Do not use near open flame or excessive heat. The flash point is 100 138°F (38 59°C).
If you become dizzy, get fresh air and medical aid immediately. If contact with eyes is made,
wash your eyes and get medical aid immediately.
· Compressed air used for cleaning purposes will not exceed 30 psi (207 kPa). Do not direct
compressed air against skin. Use goggles or full face shield.
NOTE
Do not file or attempt to clean contacts. Silver alloy surfaces on contacts may become blackened,
pitted, or eroded. These conditions will not hamper the operation of the contactor.
9.
Use dry-cleaning solvent and clean metal parts. Dry with compressed air.
10.
Inspect molded parts for warpage, breaks, and cracks.
11.
Inspect operating coil (34) for damaged insulation.
12.
Use a multimeter and measure resistance of operating c
oil (34). If resistance is not 69.8 to 77.1 ohms, replace
coil.
13.
Repair consists of replacing defective parts.
ASSEMBLY
14.
Position operating coil (34) on magnet frame (35) and install lockwasher (33) and screw (32).
15.
Position movable contact finger (30) in support (31) and install wire spring (29) and spring retainer (28).
3-102
