URAL Motorcycles 2000 -10 series, Руководство по ремонту, Страница: 73 / 193

3.3 Sidecar Alignment
The sidecar must be aligned in a definite position relative to the motorcycle. The sidecar
wheel is angled slightly towards the front of the motorcycle, and the motorcycle itself
must be leaned out, away from the sidecar (Fig. 3.3-1).
An incorrectly aligned sidecar
will drag the motorcycle to either side , which not only makes the combination
difficult to handle, but also causes excessive tire wear.
It is very important to check
sidecar alignment at scheduled maintenance intervals. If the motorcycle is not stable on
the road and is difficult to steer, check alignment as well as steering head bearing
adjustment.
Alignment is best accomplished on a smooth level floor.
Toe-in
Toe-in is checked by placing a straight edge along the motorcycle wheels and a straight
edge along and the sidecar wheel, and measuring the distance between the two straight
edges. A solid straight edge helps hold the front wheel in line with the rear wheel, and
forms a measurement line parallel to the centerline of the motorcycle. The spacing
between the straight edges at front and rear determine the toe-in. Measurement points
are below the front and rear axles of the motorcycle. Take care to measure along a line
perpendicular to the straight edge, and to keep both straight edges in contact with the
tires.
Recommended toe-in is 3/8 inch / 10 mm. That is, toe-in is correct when spacing
between the two straight edges at the front axle is 3/8 inch / 10 mm less than that at the
rear axle. Toe-in is adjusted by easing off the fastening bolt holding the lower rear
clamping bracket in the sidecar frame, and sliding the clamping bracket in or out of the
sidecar frame tube. Adjusting the position of the rear clamping bracket also affects the
position of the upper rear strut ("tie-rod"), so the upper strut bolts should be slacked off
while making the toe-in adjustment, and lean-out will subsequently require correction.
Lean-out
Recommended lean-out is 1 degree. That is, the motorcycle should lean out (away from
the sidecar) approximately 1 degree, with the motorcycle resting on wheels, not the
center stand, and the suspension compressed with the approximate weight of the
operator (1 degree lean-out is equivalent to approximately 1/2 inch / 12 mm lean-out
between handlebar level and floor). If the motorcycle is on a level floor, lean-out can be
checked using a level gauge and a protractor, or with a plump bob and a ruler. When
installing a new sidecar for the first time, lean-out can be estimated by observing the
motorcycle from the rear with an operator sitting on the saddle. The motorcycle should
lean perceptibly to the left, not perpendicular to the floor.