2002 YAMAHA TTR90 brake

5 - 3
CHASFRONT WHEEL AND REAR WHEEL
REAR WHEEL AND REAR BRAKE
Extent of removal:1 Rear wheel removal2 Wheel bearing removal
3 Brake shoe plate assembly removal and disassembly
Extent of removal Order Part name Q’ty Remarks
REAR WHEEL REMOVAL
WARNING
Support the machine securely so there is nodanger of it falling over.
Preparation for removal Hold the machine by placing the
suitable stand under the engine.
1 Brake rod 1
2 Cotter pin 1
3 Nut (tension bar) 1
4 Bolt (tension bar) 1
5 Wheel axle nut 1
6 Rear wheel axle 1
7 Drive chain puller 2
8 Rear wheel 1
9 Collar (right) 1
10 Brake shoe plate assembly 1
231

5 - 4
CHASFRONT WHEEL AND REAR WHEEL
Extent of removal Order Part name Q’ty Remarks
11 Collar (left) 1
12 Wheel drive hub assembly 1
13 Bearing 2 Refer to “REMOVAL POINTS”.
14 Brake shoe 2
15 Brake camshaft lever 1
16 Brake camshaft 1
3
2

5 - 5
CHASFRONT WHEEL AND REAR WHEEL
EC593000
REMOVAL POINTS
EC513201
Wheel bearing (if necessary)
1. Remove:
lBearing 1
NOTE:
Remove the bearing using a general bearing
puller 2.1
1
2
1
EC594000
INSPECTION
EC514100
Wheel
1. Measure:
lWheel runout
Out of limit ® Repair/replace.
Wheel runout limit:
Radial 1: 2.0 mm (0.08 in)
Lateral 2: 2.0 mm (0.08 in)
Brake lining
1. Inspect:
lBrake shoe lining surface
Glazed areas ® Polish.
Use coarse sand paper.
NOTE:
After polishing, wipe the polished particles with
a cloth.
2. Measure:
lBrake 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: 3.0 mm (0.12 in)
Rear: 4.0 mm (0.16 in)
Limit:
2.0 mm (0.08 in)

5 - 6
CHASFRONT FORK
EC550000
FRONT FORK
Extent of removal:1 Front fork removal
Extent of removal Order Part name Q’ty Remarks
FRONT FORK REMOVAL
WARNING
Support the machine securely so there is nodanger 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.
Front fender
1 Brake cable holder 1
2 Cap bolt 1
3 Adjuster 1 Only loosening.
4 Pinch bolt (under bracket) 1 Only loosening.
5 Front fork 1
1

5 - 9
CHASHANDLEBAR
EC5B0000
HANDLEBAR
Extent of removal:1 Handlebar removal
Extent of removal Order Part name Q’ty Remarks
HANDLEBAR REMOVAL
1 “ENGINE STOP” switch 1
2 Brake lever cable 1 Disconnect at the lever side.
3 Brake lever 1
4 Grip cap (lower) 1
5 Grip cap (upper) 1
6 Throttle cable 1 Disconnect at the throttle side.
7 Grip (right) 1
8 Tube guide 1
9 Grip (left) 1
10 Handlebar holder (upper) 2
11 Handlebar 1
12 Handlebar holder (lower) 2
1