1999 YAMAHA YZF-R7 Owners Manual

7 - 7
CHASFRONT WHEEL AND BRAKE DISCS
4. Install:
• brake calipers
WARNINGWARNING
Make sure that the brake hose is routed
properly.
T R..40 Nm (4.0 m · kg, 29 ft · lb)
EB700901
ADJUSTING THE FRONT WHEEL STATIC
BALANCE
NOTE:
• After replacing the tire, wheel or both,
the front wheel static balance should
be adjusted.
• Adjust the front wheel static balance
with the brake discs installed.
1. Remove:
• balancing weight(-s)
2. Find:
• front wheel’s heavy spot
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a. Place the front wheel on a suitable
balancing stand.
b. Spin the front wheel.
c. When the front wheel stops, put an
“X
1” mark at the bottom of the wheel.
d. Turn the front wheel 90˚ so that the
“X
1” mark is positioned as shown.
e. Release the front wheel.
f. When the front wheel stops, put an
“X
2” mark at the bottom of the wheel.
g. Repeat steps (a) through (d) several
times until all the marks come to rest
at the same spot.
h. The spot where all the marks come to
rest is the front wheel’s heavy spot
“X”.
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7 - 8
CHASFRONT WHEEL AND BRAKE DISCS
3. Adjust:
• front wheel static balance
t t t t t t t t t t t t t t t t t t t t t t t t t t t
a. Install a balancing weight 1 onto the
rim exactly opposite the heavy spot
“X”.
NOTE:
Start with the lightest weight.
b. Turn the front wheel 90˚ so that the
heavy spot is positioned as shown.
c. If the heavy spot does not stay in that
position, install a heavier weight.
d. Repeat steps (b) and (c) until the front
wheel is balanced.
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4. Check:
• front wheel static balance
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a. Turn the front wheel and make sure
that it stays at each position shown.
b. If the front wheel does not remain
stationary at all of the positions,
rebalance it.
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7 - 9
CHAS
REAR WHEEL, BRAKE DISC, AND REAR WHEEL
SPROCKET
EB701000
REAR WHEEL, BRAKE DISC, AND REAR WHEEL SPROCKET
Order Job/Part Q’ty Remarks
Removing the rear wheelRemove the parts in the order listed.
1 Brake caliper 1
2 Locknut (left and right) 2 Loosen.
3 Adjusting bolt (left and right) 2 Loosen.
4 Wheel axle nut 2
5 Washer 1
6 Rear wheel axle 1
7 Rear wheel 1
8 Brake caliper bracket 1
For installation, reverse the removal
procedure.
NOTE:
Place the motorcycle on a suitable
stand so that the rear wheel is ele-
vated.

7 - 10
CHAS
REAR WHEEL, BRAKE DISC, AND REAR WHEEL
SPROCKET
EB701010
Order Job/Part Q’ty Remarks
Removing the brake disc and rear
wheel sprocketRemove the parts in the order listed.
1 Brake disc 1
2 Rear wheel sprocket 1
3 Oil seal cover (left and right) 2
4 Spacer (left and right) 2
5 Oil seal 1
6 Bearing 1
7 Rear wheel drive hub 1
8 Rear wheel drive hub damper 6
9 Rear wheel 1
For installation, reverse the removal
procedure.

7 - 11
CHAS
REAR WHEEL, BRAKE DISC, AND REAR WHEEL
SPROCKET
Order Job/Part Q’ty Remarks
Disassembling the rear wheelRemove the parts in the order listed.
1 Spacer 1
2 Bearing 1
3 Spacer 1
4 Oil seal 1
5 Circlip 1
6 Bearing 1
For assembly, reverse the disassembly
procedure.

7 - 12
CHAS
REAR WHEEL, BRAKE DISC, AND REAR WHEEL
SPROCKET
EB701100
REMOVING THE REAR WHEEL
1. Stand the motorcycle on a level surface.
WARNINGWARNING
Securely support the motorcycle so that
there is no danger of it falling over.
NOTE:
Place the motorcycle on a suitable stand
so that the rear wheel is elevated.
2. Remove:
• brake caliper
NOTE:
Do not depress the brake pedal when
removing the brake caliper.
3. Remove:
• wheel axle nut
• washer
• wheel axle
• rear wheel
NOTE:
Push the rear wheel forward and
remove the drive chain from the rear
wheel sprocket.
EB701400
CHECKING THE REAR WHEEL
1. Check:
• wheel axle
• rear wheel
• wheel bearings
• oil seals
• brake disc
Refer to “FRONT WHEEL”.
2. Check:
• tire
• rear wheel
Damage/wear ® Replace.
Refer to “CHECKING THE TIRES” and
“CHECKING THE WHEELS” in chapter 3.

7 - 13
CHAS
REAR WHEEL, BRAKE DISC, AND REAR WHEEL
SPROCKET
3. Measure:
• radial wheel runout
• lateral wheel runout
Refer to “FRONT WHEEL”.
Over the specified limits ® Replace.
Max. radial wheel runout
1.0 mm (0.04 in)
Max. lateral wheel runout
0.5 mm (0.02 in)
EB701430
CHECKING THE REAR WHEEL DRIVE HUB
1. Check:
• rear wheel drive hub 1
Cracks/damage ® Replace.
• rear wheel drive hub dampers 2
Damage/wear ® Replace.
EB701440
CHECKING AND REPLACING THE REAR
WHEEL SPROCKET
1. Check:
• rear wheel sprocket
More than 1/4 tooth a wear ® Replace
the rear wheel sprocket.
Bent teeth ® Replace the rear wheel
sprocket.
b
Correct
1Drive chain roller
2Rear wheel sprocket
2. Replace:
• rear wheel sprocket
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a. Remove the self-locking nuts and the
rear wheel sprocket.
b. Clean the rear wheel drive hub with a
clean cloth, especially the surfaces
that contact the sprocket.
c. Install the new rear wheel sprocket.
NOTE:
Tighten the self-locking nuts in stages
and in a crisscross pattern.
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T R..
Rear wheel sprocket self-lock-
ing nut
150 Nm (15.0 m • kg, 110 ft • lb)

7 - 14
CHAS
REAR WHEEL, BRAKE DISC, AND REAR WHEEL
SPROCKET
EB701710
INSTALLING THE REAR WHEEL
1. Lubricate:
• wheel axle
• wheel bearings
• oil seal lips
Recommended lubricant
Lithium soap base grease
2. Adjust:
• drive chain slack a
Refer to “ADJUSTING THE DRIVE
CHAIN SLACK” in chapter 3.
Drive chain slack
40 ~ 50 mm (1.57 ~ 1.97 in)
3. Tighten:
• wheel axle
• wheel axle nut
• brake caliper bolts
WARNINGWARNING
Make sure that the brake hose is routed
properly.
EB701900
ADJUSTING THE REAR WHEEL STATIC
BALANCE
NOTE:
• After replacing the tire, wheel or both,
the rear wheel static balance should be
adjusted.
• Adjust the rear wheel static balance
with the brake disc and rear wheel
drive hub installed.
1. Adjust:
• rear wheel static balance
Refer to “FRONT WHEEL”.
T R..150 Nm (15.0 m · kg, 110 ft · lb)
T R..45 Nm (4.5 m · kg, 32 ft · lb)
T R..40 Nm (4.0 m · kg, 29 ft · lb)