Installing The Steering Head - Yamaha MT-03 Service Manual

NOTE:
• Always replace the bearings and bearing
races as a set.
• Whenever the steering head is disassem-
bled, replace the dust seal.
4. Check:
• Upper bracket
• Lower bracket
(along with the steering stem)
• Bends/cracks/damage
EAS00683

INSTALLING THE STEERING HEAD

1. Lubricate:
• Upper bearing
• Lower bearing
• Bearing races
Recommended lubricant
Lithium-soap-based grease
2. Install:
• Lower ring nut
3. Adjust:
• Steering head
a. Tighten the lower ring nut "1" to the specified
torque with a steering nut wrench "2".
NOTE:
Set the torque wrench at a right angle to the
steering nut wrench.
Steering nut wrench
90890-01403
Lower ring nut
(initial tightening torque)
52 Nm (5.2 m·kg, 38 ft·lb)
Replace.
4-58
STEERING HEAD
b. Loosen the lower ring nut completely, and
then tighten it to the specified torque.
WARNING
Do not overtighten the lower ring nut.
Lower ring nut
(final tightening torque)
18 Nm (1.8 m·kg, 13 ft·lb)
c. Check the steering head for looseness or
binding by turning the front fork all the way
in both directions. If any binding is felt, re-
move the lower bracket and check the up-
per and lower bearings.
Refer to "CHECKING THE STEERING
HEAD".
d. Install the rubber washer "2".
e. Install the upper ring nut "3".
f. Finger tighten the upper ring nut "3", and
then align the slots of both ring nuts. If nec-
essary, hold the lower ring nut and tighten
the upper ring nut until their slots are
aligned.
g. Install the lock washer "1".
NOTE:
Make sure the lock washer tabs "a" sit correct-
ly in the ring nut slots "b".
4. Install:
• Upper bracket
• Washer
• Steering stem nut
5. Install:
• Front fork legs
Refer to "INSTALLING THE FRONT FORK
LEGS".
NOTE:
Temporarily tighten the lower bracket pinch
bolts.