R.8 Part. N. 8000 B0148 (02-2008)
SMR 450-R
Steering Head Tube Adjustment
The steering head adjustment is obtained by means of coupling 2 bushes, and consists of 5 forward positions and 3 angular settings,
for a total of 15 different adjustments. The table below shows adjustments values (X) and (A°) corresponding to the use of a bush
coupling, and the check dimensions (S1) and (S2) shown in the picture.
Steering axis displacement
(X mm) +5 +2,5 0 -2,5 -5
Steering axle rotation
(
A°) 0 +1 -1 0 +1 -1 0 +1 -1 0 +1 -1 0 +1 -1
Upper Code 8B 8G 8E 8A 8F 8D 80 8C 8C 8A 8D 8F 8B 8E 8G
bush
Checking control
(
S1 mm)
4 5,1 2,4 6,5 8,1 4,9 9 10,6 7,4 11,5 13,1 9,9 14 15,6 12,9
Lower Code 8B 8E 8G 8A 8D 8F 80 8C 8C 8A 8F 8D 8B 8G 8E
bush
Checking control
(
S2 mm)
4 2,4 5,1 6,5 4,9 8,1 9 7,4 10,6 11,5 9,9 13,1 14 12,9 15,6
To avoid the dismantling of the bearings seats it is advisable to mount one bear-
ing seat on each bush; to assemble the bearing seats onto the bushes, lightly
strike on seats circumference using an aluminium drift as shown on the picture.
Assemble the bushes (3) onto the steering head tube and check that the dimen-
sions S1 and S2 correspond to the indicated values on the above table.
NOTE
Different settings from those illustrated are not possible. Any different
assembly attempt may cause damage to the steering components and
compromise their functionality rendering dangerous the vehicle use.
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