4-17. GENERAL INSPECTION INSTRUCTIONS (continued).
Inspection. Inspection consists of checking for defects, such as distortion, wear, cracks, leakage, and pitting.
Parts under heavy load or pressure must be inspected more thoroughly. Clean all parts before inspection.
Drain Plugs. When removing drain plugs from system components, inspect for sediment adhering to the
plug. A buildup of grit and/or fine metal particles may indicate part failure. A few fine particles are normal.
This inspection is effective in determining defective parts prior to internal inspection of parts.
Tubing and Hosing. Check all hose surfaces for broken or frayed fabric. Check for breaks caused by sharp
kinks or rubbing against other parts of the truck. Inspect fitting threads for damage. Replace any part found
to be defective. Following assembly and during operation of the Load Handling System, check for leaks.
Electrical Parts. Inspect wiring harnesses for chafed or burned insulation. Inspect all terminal connectors
for loose connections and broken parts. Inspect connectors for corrosion.
Metal Parts. Visually inspect all castings and weldments for cracks. Parts that carry a great load should
receive magnetic particle inspection. Critical nonferrous parts may be inspected with fluorescent penetrant.
Drilling and grinding operations are hazardous to the eyes. Eye protection is
required. Failure to heed this warning can result in injury to personnel.
Exterior Parts. Chassis and exterior painted parts may be resurfaced where paint is damaged, or where parts
have been repaired, by using an abrasive disc driven by a flexible shaft.
Remove residue and oil
stain from bearing races with crocus cloth.
The protective parts procedure is used with polished or machined steel parts not
protected by cadmium, tin, copper, or other plating or surface treatment. Bare metal
surfaces must be free of moisture when protective coating is applied.
Protective Parts. During repair operations, protect bare steel surfaces from rusting when not actually
undergoing repair work. Dip parts in, or spray them with, corrosion preventive compound. The same
protective coating may be applied to other metal to prevent rust. Aluminum parts may require protection in
regions having a high salt-air content. Steel parts must always be protected.
Electrical Parts. Replace all broken, worn, or burned electrical wiring. Wires with several broken strands
shall be replaced. Broken strands increase the resistance of the wire and impair the efficiency of the system.
Hoses. Replace all broken, frayed, crimped, or soft flexible lines or hoses. Replace stripped or damaged
fittings. Replace entire flexible hose if fittings are damaged. Make sure hose clamps do not crimp hoses.