ENGINE PRODUCES EXCESSIVE NOISE - continued

TM 10-3930-673-20-1

WARNING

Drycleaning solvent P-D-680 (Type II) is a flammable solvent that is potentially dangerous to personnel. Keep away from heat,

sparks, or open flame. Flash point of solvent is 138 degrees F (59 degrees C). Use only in a well-ventilated area. Inhaling vapors

over a period of time can cause headache and drowsiness. Use gloves to prevent irritation or inflammation of the skin. Solvent

absorbed through the skin can result in internal disorders. If contact occurs, wash the affected area with water for 15 minutes. For

eyes, flush with water and then seek immediate medical attention.

Improper cleaning methods and use of unauthorized cleaning solvents may injure personnel and damage equipment. Refer to

TM9-247 for correct information.

Eye shields must be worn when cleaning with a wire brush. Flying rust and metal particles may cause injury to personnel.

Particles blown by compressed air are hazardous. Make certain the air stream is directed away from user and other personnel in

the area. To prevent injury, user must wear protective goggles or face shield when using compressed air.

Washing oil seals, electrical cables and flexible hoses with dry cleaning solvents or mineral spirits will cause serious damage or

destroy materials.

DRIVE BELT AND TENSIONER

VISUAL INSPECTION

Visually inspect drive belt for wear. Check

operation of tensioner. Drive belt deflection

should be no greater than 1/2 in.

(a) If belt is not worn and tensioner is

functioning correctly, go to Step 2

of this fault.

(b) If belt is worn and/or tensioner is

not deflecting belt correctly,

replace belt and/or tensioner (Para

7-9).

TR01206

2-663