TM 5-3825-230-14&P
b.
Ground Handling. For ground handling instructions refer to Chapter 4, paragraph 4-12.
c.
Operational Checks. All operational checks included in the maintenance procedures will include the techniques
and methods required to assure the satisfactory performance of the sweeper. Reference the operator's instructions,
Chapter 2, for starting, sweeping, and shutdown procedures.
d.
Inspection of Components.
(1)
Inspect all surfaces in contact with gaskets, packings, or seals for nicks and burrs which might damage the
new seal upon assembly. If any defect is found, remove it before assembly.
NOTE
Defects which may cause bearing binding or misalignment are cause for rejection. Nicks or
gouges outside race load areas are not cause for rejection.
(2)
Inspect bearings for rusted or pitted balls, races, or separators. Inspect balls and races for abrasion and
serious discoloration.
(3)
Cuts or grooves parallel to ball or roller rotation and fatigue pits (not minor machine marks or scratches and
cracks found during magnetic particle inspection) are causes for bearing rejection.
(4)
Remove drain plugs from engine system components and inspect the sediment sticking to the plug. Grit or
fine metal particles may indicate actual or potential component failure. A few fine particles are normal. This inspection
will help to show defective parts before internal inspection of the component.
(5)
Guidelines for rejection of gears by visual inspection are not listed because of varying conditions for gear
application. The following descriptions of wear conditions may help to determine when parts are defective.
(a)
Initial pitting may occur when gears are first started in service. When pitting reduces local high spots
to allow enough contact area to carry load without further impairment, initial pitting is not serious.
(b)
Destructive pitting continues to progress after initial pitting. If there is not enough contact area
remaining to carry the load, rapid destruction may occur from continued use.
(c)
Abrasive wear is surface damage caused by fine particles carried in lubricant or particles imbedded in
tooth surfaces. Particles may be metal, sand, scale, or other impurities in oil or surrounding atmosphere.
(6)
Inspect all hose surfaces for broken or frayed fabric. Check for breaks caused by sharp kinks or contact
with other parts of the sweeper. Inspect the fitting threads for damage. Replace any defective part. After assembly and
during initial sweeper operation, check for leaks.
(7)
Inspect all wiring for chafed or burned insulation. Inspect all terminal connectors for loose connections and
broken parts.
(8)
Visually inspect all castings and weldments for cracks.
(9)
Clean all parts before inspection. Check for defects such as physical distortion, wear, cracks and pitting.
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