Table 1-1. Unit Preventive Maintenance Checks and Services - CONT
Item to be
Not Fully Mission
Change gear lubricant (page 1-86).
It's time to replace vee belts when they are
cracked or split.
Check for cracks or splits on bottom
Grease buildup causes belts to
or sides of belt. A cracked or split
soften, rot, and fail.
belt can fail at any time.
Belts with slick, hard sides do not
When the underside of the belts peel, it
function properly This can cause the
becomes uneven, causing rough
radiator or other components to overheat.
operation and failure.
Check vee belts for excessive wear and belt
Any vee belt is
tightness (page 1-75). Replace or adjust
accordingly (page 7-89).
cracked to the
belt fiber, has
more than one
crack (1/8 inch in
depth or 50% of
belt thickness), or
has frays more
than 2 inches