Brake Pad Inspection - Polaris 2009 Trail Boss 330 Service Manual

Sight
Glass
Auxiliary Brake
Master Cylinder
G
Check brake system for fluid leaks,
excessive travel or spongy feel.
G
Check friction
damage or looseness.
G
Check surface condition of the disc.
G Inspect thickness of brake pad
friction material.

BRAKE PAD INSPECTION

Pads should be changed when friction material is
worn to 3/64" (.1 cm), or about the thickness of a dime.
HOSE/FITTING INSPECTION
Check brake system hoses and fittings for cracks,
deterioration, abrasion, and leaks. Tighten any loose
fittings and replace any worn or damaged parts.
Parking Brake
Lock
pads for wear,
3/64"
(.1cm)
Minimum
Thickness
AUXILIARY BRAKE
ADJUSTMENT (HYDRAULIC)
Use the following procedure to inspect the hydraulic
auxiliary (foot) brake system and adjust or bleed if
necessary:
First, check foot brake effectiveness by applying 50 lb.
(approx.) downward force on the pedal. The top of the
pedal should be at least 1 inch, (25.4mm) above the
surface of the footrest.
1/8, to 1/4,
Free Play
50 lbs
If less than one inch, two things must be examined:
Free Play:
Free play of the brake pedal should be 1/8 - 1/4
inch (3.2 - 6.35 mm).
If free play is excessive, inspect pedal, linkage, and
master cylinder for wear or damage and replace any
parts as needed.
Bleeding:
If free play is correct and brake pedal travel is still
excessive, air may be trapped somewhere in the
system. Bleed the hydraulic auxiliary brake system in
a conventional manner, following the procedure
outlined in Brake Chapter 9.
DRIVE CHAIN AND
SPROCKET INSPECTION
Polaris ATV drive chains are equipped with O-ring
sealed permanently greased pins and rollers. The
sprockets and outer
lubrication. Lubricate the chain with Polaris O-Ring
Chain Lubricant (PN 2872073).
Inspect the drive chain for missing or damaged
O-Rings, link plates, or rollers. Do not wash the chain
with a high pressure washer, gasoline or solvents; do
not use a wire brush to clean the chain as damage to
the O-Rings may occur. Clean chain with hot soapy
water and a soft bristled nylon brush.
MAINTENANCE
1" or greater
Floorboard
rollers require periodic
2.29