wheel torque YAMAHA T105 2009 Owners Manual

PERIODIC MAINTENANCE AND ADJUSTMENT
6-19
6 6. Install the check hole cap.
7. If the drive chain slack is incorrect,
adjust it as follows.
EAU37693
To adjust the drive chain slack
1. Loosen the brake pedal free play
adjusting nut and the brake torque
rod nut.2. Loosen the axle nut, then loosen
the locknut at each end of the
swingarm.
3. To tighten the drive chain, turn the
drive chain slack adjusting nut at
each end of the swingarm in direc-
tion (a). To loosen the drive chain,
turn the adjusting nut at each end
of the swingarm in direction (b),
and then push the rear wheel for-
ward. NOTICE: Improper drive
chain slack will overload the en-
gine as well as other vital parts
of the motorcycle and can leadto chain slippage or breakage.
To prevent this from occurring,
keep the drive chain slack with-
in the specified limits.
[ECA10571]
TIPUsing the alignment marks on each
side of the swingarm, make sure that
both chain pullers are in the same posi-tion for proper wheel alignment.
4. Tighten both locknuts, and then
tighten the axle nut and brake
torque rod nut to their specified
torques.
1. Drive chain slackDrive chain slack:
25.0–35.0 mm (0.98–1.38 in)
1
1. Brake pedal free play adjusting nut
2. Locknut
3. Drive chain slack adjusting nut
4. Axle nut
5. Brake torque rod nut
1
2
3
4
5
1. Alignment marks
2. Drive chain slack adjusting nut
3. Locknut
4. Chain puller
14
2
3
(a)
(b)
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-20
6
TIPWhen tightening the axle nut, hold the
wheel axle with a wrench to keep it fromturning.
5. Adjust the brake pedal free play.
(See page 6-15.)
WARNING
EWA10660
After adjusting the brake pedal free
play, check the operation of thebrake light.
EAU23013
Cleaning and lubricating the
drive chain The drive chain must be cleaned and
lubricated at the intervals specified in
the periodic maintenance and lubrica-
tion chart, otherwise it will quickly wear
out, especially when riding in dusty or
wet areas. Service the drive chain as
follows.NOTICE
ECA10581
The drive chain must be lubricated
after washing the motorcycle andriding in the rain.
1. Remove all dirt and mud from the
drive chain with a brush or cloth.TIPFor a thorough cleaning, have a
Yamaha dealer remove the drive chainand soak it in solvent.
2. Spray Yamaha Chain and Cable
Lube or a high-quality spray-type
drive chain lubricant on both sides
and on the middle of the chain,making sure that all side plates
and rollers have been sufficiently
oiled.
Tightening torques:
Axle nut:
60 Nm (6.0 m·kgf, 43 ft·lbf)
Brake torque rod nut:
19 Nm (1.9 m·kgf, 13 ft·lbf)
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-32
6
EAU47730
To install the front wheel
1. Install the speedometer gear unit
into the wheel hub so that the pro-
jection on the wheel hub fits in ei-
ther slot of the speedometer gear
unit.2. Lift the wheel up between the fork
legs.
TIPMake sure that there is enough space
between the brake pads before insert-
ing the brake disc and that the retainer
in the speedometer gear unit fits overthe slot on the fork leg.3. Insert the wheel axle, and then in-
stall the washer and the axle nut.
4. Take the motorcycle off the center-
stand so that the front wheel is on
the ground.
5. Tighten the axle nut to the speci-
fied torque.
TIPWhen tightening the axle nut, hold the
wheel axle with a wrench to keep it fromturning.
1. Wheel axle
1
1. Projection
2. Speedometer gear unit
3. Slot
2
3
1
1. Retainer
2. SlotTightening torque:
Axle nut:
39 Nm (3.9 m·kgf, 28 ft·lbf)
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-33
6 6. While applying the front brake,
push down hard on the handlebars
several times to check if the front
fork compresses and rebounds
smoothly.
7. Install the rubber cap.
8. Connect the speedometer cable.
EAU25080
Rear wheel
EAU47710
To remove the rear wheel
WARNING
EWA10821
To avoid injury, securely support the
vehicle so there is no danger of itfalling over.
1. Place the motorcycle on the cen-
terstand.
2. Remove the drive chain case by
removing the screws.
3. Loosen the axle nut.4. Loosen the locknut and the drive
chain slack adjusting nut on both
ends of the swingarm.
5. Loosen the brake torque rod nut at
the brake shoe plate.
6. Disconnect the brake torque rod
from the brake shoe plate by re-
moving the cotter pin, the nut, the
washer and the bolt.1. Drive chain case
2. Screw
1
2
2
1. Locknut
2. Drive chain slack adjusting nut
3. Washer
4. Axle nut
12
3
4
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-34
67. Remove the brake pedal free play
adjusting nut, and then disconnect
the brake rod from the brake cam-
shaft lever.8. Remove the axle nut and the
washer, and then pull the wheel
axle out.9. Push the wheel forward, and then
remove the drive chain from the
rear sprocket.
TIPThe drive chain does not need to be
disassembled in order to remove andinstall the wheel.
10. Remove the wheel.
EAU47700
To install the rear wheel
1. Install the wheel by inserting the
wheel axle from the left-hand side.
2. Install the drive chain onto the rear
sprocket.
3. Install the washer and the axle nut.
4. Install the brake rod onto the brake
camshaft lever, and then install the
brake pedal free play adjusting nut
onto the brake rod.
5. Connect the brake torque rod to
the brake shoe plate by installing
the bolt, the washer and the nut.
6. Adjust the drive chain slack. (See
page 6-18.)
7. Tighten the brake torque rod nut
and axle nut to the specified
torques.
1. Brake torque rod
2. Brake torque rod cotter pin
3. Brake torque rod nut and bolt
1
2
3
1. Washer
2. Axle nut
3. Brake rod
4. Brake pedal free play adjusting nut
5. Brake camshaft lever
1. Wheel axle4
5
1
2
3
1
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PERIODIC MAINTENANCE AND ADJUSTMENT
6-35
6
TIPWhen tightening the axle nut, hold the
wheel axle with a wrench to keep it fromturning.
8. Insert a new cotter pin.
9. Adjust the brake pedal free play.
(See page 6-15.)
WARNING
EWA10660
After adjusting the brake pedal free
play, check the operation of thebrake light.
10. Install the drive chain case by in-
stalling the screws.
EAU25851
Troubleshooting Although Yamaha motorcycles receive
a thorough inspection before shipment
from the factory, trouble may occur dur-
ing operation. Any problem in the fuel,
compression, or ignition systems, for
example, can cause poor starting and
loss of power.
The following troubleshooting chart
represents a quick and easy procedure
for checking these vital systems your-
self. However, should your motorcycle
require any repair, take it to a Yamaha
dealer, whose skilled technicians have
the necessary tools, experience, and
know-how to service the motorcycle
properly.
Use only genuine Yamaha replace-
ment parts. Imitation parts may look like
Yamaha parts, but they are often inferi-
or, have a shorter service life and can
lead to expensive repair bills.
WARNING
EWA15141
When checking the fuel system, do
not smoke, and make sure there are
no open flames or sparks in the ar-
ea, including pilot lights from waterheaters or furnaces. Gasoline or
gasoline vapors can ignite or ex-
plode, causing severe injury or
property damage.
Tightening torques:
Brake torque rod nut:
19 Nm (1.9 m·kgf, 13 ft·lbf)
Axle nut:
60 Nm (6.0 m·kgf, 43 ft·lbf)
U40BE0E0.book Page 35 Wednesday, January 7, 2009 10:05 AM