Yamaha XV19SX(C), Service Manual

Page: 239 / 494

REAR SHOCK ABSORBER ASSEMBLY AND SWINGARM
4-86
EAS23180
HANDLING THE REAR SHOCK ABSORBER
WARNING
EWA13740
This rear shock absorber contains highly
compressed nitrogen gas. Before handling
the rear shock absorber, read and make sure
you understand the following information.
The manufacturer cannot be held responsi-
ble for property damage or personal injury
that may result from improper handling of
the rear shock absorber.
• Do not tamper or attempt to open the rear
shock absorber.
• Do not subject the rear shock absorber to
an open flame or any other source of high
heat. High heat can cause an explosion due
to excessive gas pressure.
• Do not deform or damage the rear shock
absorber in any way. Rear shock absorber
damage will result in poor damping perfor-
mance.
EAS23190
DISPOSING OF A REAR SHOCK ABSORBER
1. Gas pressure must be released before dis-
posing of a rear shock absorber. To release
the gas pressure, drill a 2–3 mm (0.08–0.12
in) hole through the rear shock absorber at a
point 15–20 mm (0.59–0.79 in) from its end
as shown.
WARNING
EWA13760
Wear eye protection to prevent eye damage
from released gas or metal chips.
ET1D71002
REMOVING THE REAR SHOCK ABSORBER
ASSEMBLY AND SWINGARM
1. Stand the vehicle on a level surface.
WARNING
EWA13120
Securely support the vehicle so that there is
no danger of it falling over.
NOTE:
Place the vehicle on a suitable stand so that the
rear wheel is elevated.
2. Loosen:
• Engine mounting nut (rear lower side)
Refer to “ENGINE REMOVAL” on page 5-1.
NOTE:
Because there is force being exerted on the en-
gine mounting bracket (left and right rear lower
sides), it is necessary to loosen the engine
mounting nut (rear lower side) in order to create
some space between the connecting arms and
engine bracket before removing the rear shock
absorber and swingarm.
3. Remove:
• Connecting arm bolt (frame side)
NOTE:
When removing the connecting arm bolt (frame
side), hold the swingarm so that it does not drop
down.
4. Measure:
• Swingarm side play
• Swingarm vertical movement
▼▼▼ ▼ ▼ ▼▼▼ ▼ ▼ ▼▼▼ ▼ ▼ ▼▼▼ ▼ ▼ ▼▼▼ ▼ ▼ ▼▼▼ ▼ ▼▼▼
a. Measure the tightening torque of the pivot
shaft nut.
b. Measure the swingarm side play “A” by mov-
ing the swingarm from side to side.
c. If the swingarm side play is out of specifica-
tion, check the spacers, bearings, washers,
and oil seals.
d. Check the swingarm vertical movement “B”
by moving the swingarm up and down.
If swingarm vertical movement is not smooth
or if there is binding, check the spacers, bear-
ings, washers, and oil seals.
T
R
.
.
Pivot shaft nut
125 Nm (12.5 m·kg, 90 ft·lb)
Swingarm side play (at the end of
the swingarm)
1.0 mm (0.04 in)