Ducati Scrambler 800 - Service manual > Refitting the front wheel

When all the necessary inspections have been completed, refit the front wheel as follows.

Lubricate the wheel shaft (6).

Insert front wheel between the fork legs, fitting spacer (7) between wheel hub and fork bottom end.

Insert shaft (6).

Fit nut (3) without tightening it to torque.

Apply the recommended grease to the thread and underside of calliper retaining screws (2).

Pre-tighten the two screws (2) to a torque of 2 Nm +- 10%.

Work several times on the brake lever to allow the calliper to settle.

Hold the brake lever pulled and simultaneously tighten the two screws (2) to a torque of 45 Nm +- 5%.

Tighten the screws (5) on the motorcycle's left side to a torque of 10 Nm +- 5%, following a 1-2-1 sequence.

Tighten nut (3) to a torque of 63 Nm +- 5%.

Loosen screws (5) that have been previously tightened.

Lower the bike to the ground by removing the support.

Push on the handlebar to load the suspensions and to allow the fork legs to settle on the wheel shaft.

Tighten the screws (5) to a torque of 10 Nm +- 5%, following a 1-2-1 sequence.

Overhauling the front wheel

Wheel bearings

Before checking the dimensions, check for wear on wheel hub bearings. Check for wear by hand after cleaning and degreasing the bearings in their seats.

Turn the internal ring and check that the internal balls move freely: any irregularity indicates deformations like those indicated in values "A" and "B".

An excessive wear can cause vibrations and instability of the vehicle and therefore it is necessary to replace them.

To remove the bearings and the sealing rings from the wheel hub follow the instructions below.

Position a drift (C) against the inner ring of the bearing (10).

Tap with a hammer until removing the bearing (10).

Apply the drift at different points to facilitate the removal.

Important Once removed, the used bearings and sealing rings must not be refitted.

Before fitting new bearings, check that the seat is clean and free from scoring and damage.

Grease the bearing seat and then push the new bearing into its seat.

Using a tubular drift (D) that only bears on the outer ring of the bearing (10) to drive the latter fully into its seat.

Use the same method to install the sealing rings (9).

Ensure that spacer (8) is fitted between the two wheel hub bearings.

Note Wheels must be rebalanced after repair, maintenance and overhaul operations.

Inspecting the wheel shaft

For the check values refer to paragraph (Front Wheel).

Check the wheel shaft (7) for straightness. Turn the shaft on a reference surface and measure maximum distortion using a feeler gauge.

Overhauling the wheel rim

After you have checked the bearings, check the rim as follows.

Visually inspect the rim for cracks, scoring and deformation: change the rim if damaged.

Insert the shaft in the wheel and position it on two fixed reference blocks.

Using a dial gauge, measure rim runout and out-of-round with respect to the shaft axis.

If the values measured are not within the tolerance limits, replace the wheel.

Removing the front wheel

Support the bike so that the wheel to be removed is raised from the ground.

Remove front brake callipers (1) by loosening the two screws (2) securing the calliper to the fork leg without disconnecting them from the hoses.

Warning Do not operate the brake lever when the callipers are removed. This can cause the brake pad pistons to come out.

Loosen and remove nut (3) on wheel shaft left side.

Loosen the wheel shaft screws (5) on the fork legs.

Working from the left-hand side, use a plastic mallet to drive the wheel shaft (6) out from the opposite side and remove it.

Remove the wheel and recover spacer (7).

See also: