KTM 450 EXC-R EU User Manual
Page 37
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MAINTENANCE WORK ON CHASSIS AND ENGINE
35
Checking the riding sag of the shock absorber
400222-10
ದ
Measure distance
b
of rear wheel unloaded. (
P. 34)
ದ
With another person holding the motorcycle, sit on the saddle with full protective
clothing in a normal sitting position (feet on footrests) and bounce up and down a
few times until the rear suspension levels out.
ದ
The other person now has to measure the distance between the rear axle and a
fixed point.
ದ
Make a note of the value as measurement
b
.
Info
The riding sag is the difference between measurements
b
and
b
.
ದ
Check the riding sag.
Riding sag
105
bmm (4.13bin)
»
If the riding sag differs from the specified measurement:
ದ
Adjust the riding sag. (
P. 36)
Adjusting spring preload of the shock absorber
b
x
Danger
Danger of accidents
ಘThe shock absorber is under high pressure.
ದ
The shock absorber is filled with highly compressed nitrogen, so never dismantle the shock absorber or carry out any main-
tenance on it yourself.
Info
Before changing the spring preload, make a note of the present setting, e.g., by measuring the length of the spring.
ದ
Remove shock absorber. (
P. 36)
ದ
After removing the shock absorber, clean it thoroughly.
400216-10
ದ
Loosen screw
b
.
ದ
Turn adjusting ring
b
until the spring is no longer under tension.
Combination wrench (50329080000)
Hook wrench (T106S)
ದ
Measure the overall spring length when not under tension.
ದ
Tighten the spring by turning adjusting ring
b
to measurement
b
.
Specification
Spring preload
Standard
9
bmm
Info
Depending on the static sag and/or the riding sag, it may be necessary to
increase or decrease the spring preload.
ದ
Tighten screw
b
.
Specification
Screw, shock absorber adjusting ring
M6
5
bNm (3.7blbfbft)
ದ
Installing shock absorber. (
P. 36)