Checking Spoke Tension - KTM 250 EXC TPI 2019 Repair Manual

14 WHEELS
14.6
140
400998-01

Checking spoke tension

Warning
Danger of accidents Incorrectly tensioned spokes impair the handling characteristic and result in sec-
ondary damage.
The spokes break due to being overloaded if they are too tightly tensioned. If the tension in the spokes
is too low, then lateral and radial run-out will form in the wheel. Other spokes will become looser as a
result.
–
Check spoke tension regularly, and in particular on a new vehicle.
400694-01
–
Check for lateral and radial run-out of the rims.
Lateral runout
Outside the rim joint
Radial runout
Outside the rim joint
» If the measured value is greater than the specified value:
–
Center the rim.
Info
Center the rim by pulling the spoke nipple on
the other side of the rim run-out. If there is sig-
nificant deformation, change the rim.
–
Correct the spoke tension.
–
Strike each spoke briefly using a screwdriver blade.
Info
The frequency of the sound depends on the spoke
length and spoke diameter.
If you hear different tone frequencies from different
spokes of equal length and diameter, this is an indica-
tion of different spoke tensions.
You should hear a high note.
» If the spoke tension differs:
–
Correct the spoke tension.
–
Check the spoke torque.
Guideline
Spoke nipple, front
wheel
Spoke nipple, rear
wheel
Torque wrench kit (58429094000) (
< 1.8 mm (< 0.071 in)
< 1.8 mm (< 0.071 in)
M4.5 6 Nm (4.4 lbf ft)
M4.5 6 Nm (4.4 lbf ft)
p. 368)