Irbit Motorcycle Factory Gear Up 2003, Owner'S Manual

Page: 52 / 99

52
Wheel Construction
Two adjustable tapered roller bearings are pressed into the wheel hub, which are prelubricated with
LITOL-24 type grease. Depending on motorcycle versions, the wheels with aluminum cast brake
drum or disc type may be used. The adjustment of bearings is the same for both styles of wheel.
Adjustment of wheel bearings.
The wheel bearing life is greatly extended through proper
adjustment. Check the condition of bearings and adjust tight-
ening of them every 5000 km. To adjust the bearings proceed
as follows:
-
Remove the wheel from the motorcycle;
- Fit the rear wheel axle (without protective cap), tighten it
by nut with the aid of a bushing, 100 mm long, with 21 mm ID
and 25…30 mm OD, or a set of bushing of given size.
-
Determine if there is a play by turning the axle (but not the
wheel on the axle) and rocking it, slacken off the lock nut.
-
Screw the seal nut up to the limit, then release it by 1/6..1/
8 of the turn so that the axle-bushing system rotates without
play, easily and without jamming. The overtightening of bear-
ings is strictly prohibited.
-
Tighten the lock nut without effecting the bearing adjust-
ment.
-
Pull the axle out.
- Put the wheel onto the motorcycle.