a. General (Cont.).
Do not remove dowel pins or studs unless loose, bent, broken, or otherwise damaged.
Do not remove bearings or bushings unless damaged. If you need to remove them to access
parts behind, pull bearings and bushings out carefully.
Replace all gaskets, seals, lockwashers, cotter pins, preformed packing, and other locking
Insure all parts are lubricated as specified in the Lubrication Order.
b. Work Safety.
Observe all warnings and cautions. Always use power tools carefully.
Protect yourself against injury. Wear protective gear such as safety goggles or lenses, safety shoes,
rubber apron, and gloves.
When lifting heavy parts, have someone help you. Insure that lifting/stabilizing equipment is working
properly, is suitable for the assigned task, and is secure against slipping.
All maintenance should be performed with:
Semitrailer parking brake engaged.
Prime mover in neutral with parking brake engaged, if attached.
Prime mover engine stopped, if attached.
Chock front and rear of tires.
Ground boards emplaced.
Improper cleaning methods and use of unauthorized cleaning
liquids or solvents can injure personnel and damage equipment. To
prevent this, refer to TM 9-247 for further instructions.
Do not use high-pressure water or steam to clean semitrailer. Use
only low -pressure water and brist led brushes. Be especially careful
when cleaning electrical system components to include lighting.
Damage or impaired operation will result if this caution is not
Cleaning instructions will be the same for a majority of parts and components that make up the
semitrailer. The following should apply to all cleaning operations:
Clean all parts before inspection, after repair, and before assembly.
Keep hands free of grease which can collect dust, dirt, and grit.
After cleaning, all parts should be covered or wrapped to protect them from dust and dirt. Parts
that are subject to rust should be lightly oiled.