Checking The Steering Head - Yamaha YZF-R1(B) 2012 Service Manual

EAS23110
REMOVING THE LOWER BRACKET
1. Stand the vehicle on a level surface.
EWA13120
WARNING
Securely support the vehicle so that there
is no danger of it falling over.
2. Remove:
• Upper ring nut "1"
(with the steering nut wrench "2")
Steering nut wrench
90890-01403
Exhaust flange nut wrench
YU-A9472
EWA13730
WARNING
Securely support the lower bracket so that
there is no danger of it falling.
EAS23130

CHECKING THE STEERING HEAD

1. Wash:
• Bearings
• Bearing races
Recommended cleaning solvent
Kerosene
2. Check:
• Bearings "1"
• Bearing races "2"
Damage/pitting → Replace.
3. Replace:
• Bearings
• Bearing races
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a. Remove the bearing races "1" from the
steering head pipe with a long rod "2" and
hammer.
b. Remove the bearing race from the lower
bracket "3" with a floor chisel "4" and ham-
mer.
c. Install a new dust seal and new bearing
races.
ECA14270
If the bearing race is not installed properly,
the steering head pipe could be damaged.
TIP
• Always replace the bearings and bearing
races as a set.
• Whenever the steering head is disassem-
bled, replace the lower bearing dust seal.
▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲
4. Check:
• Upper bracket
• Lower bracket
(along with the steering stem)
Bends/cracks/damage → Replace.
4-74
STEERING HEAD