Yamaha YZF-R15, Service Manual

Page: 147 / 338

4-50 4-51
STEERING HEAD STEERING HEAD
1. Stand the vehicle on a level surface.
2. Remove:
• Upper ring nut
• Rubber washer
• Lower ring nut “1”
• Lower bracket
Remove the lower ring nut with the steering nut
wrench “2”.
1. Wash:
• Bearings
• Bearing races
2. Check:
• Bearings
• Bearing races
Damage/pitting → Replace.
3. Replace:
• Bearings
• Bearing races
a. Remove the bearing races from the steering
head pipe with a long rod “1” and hammer.
b. Remove the bearing race from the lower
bracket with a floor chisel “2” and hammer.
c. Install a new dust seal and new bearing rac-
es.
• Always replace the bearings and bearing races
as a set.
• Whenever the steering head is disassembled,
replace the dust seal.
4. Check:
• Upper bracket
• Lower bracket
(along with the steering stem)
Bends/cracks/damage
→ Replace.
1. Lubricate:
• Upper bearing
• Lower bearing
• Bearing races
2. Install:
• Lower ring nut
• Rubber washer
sssssssssssssssssssssssssssssssssssssss
sssssssssssssssssssssssssssssssssssssss
1
2
13 Upper bearing outer race 1
14 Lower bearing outer race 1
15 Lower bearing inner race 1
16 Dust seal 1
For installation, reverse the removal proce-
dure.
Removing the lower bracket
Order Job/Parts to remove Qty Remarks
2
3
4
5
6
7
9
10
11
13
14
15
8
16
12
1
New
T
R
.
.
7 Nm (0.7 m
•
kg, 5.1 ft Ib)
• T
R
.
.
1st 48 Nm (4.8 m
•
kg, 35 ft lb)
•
2nd 13 Nm (1.3 m
•
kg, 9.4 ft lb)
•
LS
LS
T
R
.
.
7 Nm (0.7 m
•
kg, 5.0 ft Ib)
•
T
R
.
.
35 Nm (3.5 m
•
kg, 25 ft lb)
•