Chassis Maintenance And Repair; Front Wheel; Removal; Front Axle Inspection - Yamaha YTZ250S 1986 Service Manual

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CHASSIS MAINTENANCE AND REPAIR
Whenever performing chassis work, always
take extra care and double-check each step of
each procedure. The wheels, brakes, suspen-
sion, steering, and frame must all be in top
condition to provide optimum performance,
reliability, and safety.
FRONT WHEEL
Removal
1. Elevate the front wheel by placing a
suitable stand under the frame.
2. Loosen the front axle pinch bolt.
1. Pinch bolt
2. Front axle
3. Remove the front wheel axle, collars,
and front wheel assembly from the front
fork.
Front Axle Inspection
Remove any corrosion from the axle with
emery cloth. Place the axle on a surface plate
and check for bend. If bent, replace the axle.
Do not attempt to straighten a bend.
Front Wheel Inspection
1. Check for cracks, bends or warpage of
the wheels. If a wheel is deformed or
cracked, it must be replaced.
4-1
2. Check wheel runout.
If deflection exceeds tolerance below,
check the wheel bearing or replace wheel
as required.
Rim runout limits:
Vertical - 2.0 mm (0.08 in)
Lateral - 2.0 mm (0.08 in)
1. Dial gauge
Replacing the Wheel Bearings
If the bearings allow play in the wheel hub or if
the wheel does not turn smoothly, replace the
bearings as follows:
1. Oil seal 2. Bearing