Checks and Services Quarterly Schedule (CONT)

TM 10-7360-204-13&P

Table 4-1. Organizational Preventive Maintenance

Checks and Services Quarterly Schedule

(Continued)

Item

to be

Procedures

No.

Inspected

Burner Assembly

Main Generator

Inspect generator flame valve for leaks and improper operation. Check for leaks

between valve stem and packing nut by using soapy solution. If valve leaks,

tighten nut or repair valve ( ara 3-4.1). Check for improper operation by turning

the flame valve knob counterclockwise to open the valve. The knob should

positively stop when completely opened. Any knob failing to positively stop

when fully opened should have the packing nut tightened or by replacing the

packing (para 3-4.1). Inspect generator for carbon deposits, dents, breaks, and

loose connections. Replace a defective generator para 4-9.2).

(

Burner

Inspect for breaks, loose mounting, and clogged slots. During operation, check

for erratic burning and blue or yellow flame. Replace a defective burner (para

4-9.3).

Air Pressure Gage

Inspect for breaks, broken glass, or bent needle. Check with tank filler cap

removed to determine the gage reads zero. Then check after filling tank and

closing tank filler cap, the gage will indicate a steady even increase in pressure as

the tank is pressurized with the hand pump. If the gage will not pass above visual

inspection and tests, the gage shall be replaced (para 4-9.5).

Inspect shutter for binding, loose mounting and damaged control lever.

Air Control Shutter

Tighten mounting hardware. Inspect mixing chamber for cracks.

and Mixing

Replace any defective parts (para. 4-9.3).

Chamber

WARNING

Use extreme care when utilizing the air compressor to pressurize

the fuel tank.

Safety Valve

Inspect device for improper operation, leaks, loose hardware for bent tubing.

Device

Safety system for proper functioning. DRAIN FUEL TANK. Using air

compressor, pressurize tank to approximately 60 (PSIG) where the safety valve

should operate. After the safety opens, pressure should drop rapidly to

approximately 35 10 PSIG at which point the safety valve should close. Using

soapy solution, check for leaks. Set burner unit on end and turn fuel filler cap

slowly counterclockwise to release air pressure. Tighten any loose hardware.

Replace defective device (para 4-9.10).

Section V. TROUBLESHOOTING

4-7. GENERAL.

This section provides information useful to organizational maintenance personnel in diagnosing and correcting

unsatisfactory operation or failure of the field range outfit.

4-7.1 TROUBLESHOOTING.

Refer to table 4-2 for a listing of the possible malfunctions that may occur in the field range outfit.

Change 11

4-3