2006 YAMAHA TTR50 Front wheel

5 - 5
CHASFRONT WHEEL AND REAR WHEEL
EC593000
REMOVAL POINTS
EC513201
Wheel bearing (if necessary)
1. Remove:Bearing 1
NOTE:
Remove the bearing using a general bearing
puller 2.11
2
1
EC594000
INSPECTION
EC514100
Wheel
1. Measure: Wheel runout
Out of limit → Repair/replace.
Brake lining
1. Inspect: Brake shoe lining surface
Glazed areas → Polish.
Use coarse sand paper.
NOTE:
After polishing, wipe the polished particles with
a cloth.
Wheel runout limit: Radial 1: 2.0 mm (0.08 in)
Lateral 2: 2.0 mm (0.08 in)
2. Measure:
Brake shoe lining thickness
Out of specification → Replace.
NOTE:
Replace the brake shoes and springs as a set
if either is worn to the limit.
Brake shoe lining thickness
a:
Standard: Front: 3.5 mm (0.14 in)
Rear: 3.5 mm (0.14 in)
Limit: 1.5 mm (0.06 in)

5 - 6
CHAS
ASSEMBLY AND INSTALLATION
Brake shoe plate assembly
1. Install:Wear indicator plate 1
NOTE:
When installing the wear indicator plate to the
brake camshaft align the projection a on the
wear indicator plate with the slots b on the
brake camshaft.
2. Install:
Brake camshaft lever 1
NOTE:
Align the punch mark a on the brake camshaft
lever with the punch mark b on the brake
camshaft.
b
1
a
1a
b
T R..7 Nm (0.7 m · kg, 5.1 ft · lb)
3. Install:
Spring 1
 Brake shoes 2
NOTE:
Apply the lithium soap base grease on the
pivot pin.
WARNING
Do not apply grease to the brake shoe lin-
ings.
1
2
2
LS
New
New
FRONT WHEEL AND REAR WHEEL

5 - 7
CHAS
Front wheel
1. Install:Wheel bearing 1
 Spacer 2
 Wheel bearing 3
 Oil seal 4
NOTE:
Apply the lithium soap base grease on the oil
seal lip when installing.
 Use a socket that matches the outside diam-
eter of the race of the bearing.
 Left side of wheel bearing shall be installed
first.
 Install the oil seal with its manufacture ’s
marks or numbers facing outward.
CAUTION:
Do not strike the inner race of the bearing.
Contact should be made only with the outer
race.
New
2. Install: Front wheel
NOTE:
Make sure that the slot a on the brake shoe
plate with the stopper b on the front fork inner
tube.
b
a
3. Install: Spring 1
 Pin 2
NOTE:
Install the spring 1 with its smaller diameter
end a towards the pin 2.1
2
a
1
2
FRONT WHEEL AND REAR WHEEL

5 - 8
CHAS
Rear wheel
1. Install:Wheel bearing 1
 Spacer 2
 Wheel bearing 3
 Oil seal 4
NOTE:
Apply the lithium soap base grease on the oil
seal lip when installing.
 Install the wheel bearing with seal facing out-
ward.
 Use a socket that matches the outside diam-
eter of the race of the bearing.
 Right side of bearing shall be installed first.
 Install the oil seal with its manufacture ’s
marks or numbers facing outward.
CAUTION:
Do not strike the inner race of the bearing.
Contact should be made only with the outer
race.
New
2. Install: Rear wheel sprocket 1
 Bolts (rear wheel sprocket) 2
 Nuts (rear wheel sprocket) 3
NOTE:
Tighten the bolts in stage, using a crisscross
pattern.
1
2 4
1
3
2 3T R..25 Nm (2.5 m · kg, 18 ft · lb)
3. Install:
Rear wheel
NOTE:
Make sure that the slot a on the brake shoe
plate with the stopper b on the swingarm.
a
b
FRONT WHEEL AND REAR WHEEL

5 - 9
CHAS
4. Install:Drive chain 1
NOTE:
Push the wheel 2 forward and install the drive
chain.
2
1
FRONT WHEEL AND REAR WHEEL

5 - 13
CHASSTEERING AND FRONT SUSPENSION
EC560000
STEERING AND FRONT SUSPENSION
Extent of removal:1 Lower bracket removal
2 Bearing removal
3 Inner table assembly removal
Extent of removal Order Part name Q ’ty Remarks
STEERING AND FRONT SUS-
PENSION REMOVAL
WARNING
Support the machine securely so
there is no danger of it falling over.
Preparation for removal Hold the machine by placing the
suitable stand under the engine.
Front wheel Refer to “FRONT WHEEL AND REAR
WHEEL ” section.
Handlebar Refer to “HANDLEBAR ” section.
1 Cable guide 1
2 Reflector 2 For Canada
3 Steering stem nut 1
4 Upper bracket 1
5 Special washer 1 Use special tool. Refer to “STEERING HEAD INSPEC-
TION AND ADJUSTMENT ” section in
the CHAPTER 3.
6 Upper ring nut 1
7 Rubber washer 1
213

5 - 17
CHASSWINGARM
EC570000
SWINGARM
Extent of removal:1 Swingarm removal
2 Rear shock absorber removal
Extent of removal Order Part name Q ’ty Remarks
SWINGARM REMOVAL
WARNING
Support the machine securely so
there is no danger of it falling over.
Preparation for removal Hold the machine by placing the
suitable stand under the engine.
Seat assembly Refer to “FRONT FENDER, SEAT
ASSEMBLY AND FUEL TANK ” section
in the CHAPTER 4.
Rear wheel Refer to “FRONT WHEEL AND REAR
WHEEL ” section.
Drive chain
1 Rear shock absorber 1
2 Drive chain guard 1
3 Drive chain support 1
4 Drive chain guide 1
1
2