Front wheel

1 -	Front wheel

1

2

3	Left spacer

4	Sealing ring

5

6	Inner spacer

7

8	Front wheel shaft

9	Front wheel rim

10	Right spacer

11	Phonic wheel

Spare parts catalogue


1100 ABS	Front fork
1100 ABS	Front and rear wheels
1100 S ABS	Front fork
1100 S ABS	Front and rear wheels

Bold reference numbers in this section identify parts not shown in the figures alongside the text, but which can be found in the exploded view diagram.

Removal of the front wheel

Support the bike so that the front wheel is raised from the ground.

Remove the front brake calliper (B) by unscrewing the two screws (A) securing the calliper to the fork leg; do not disconnect the calliper from the hose.

Do not operate the brake lever when the callipers are removed. This could cause fluid to leak out from the actuating pistons.

Loosen and remove the nut (1) on left side of the wheel shaft.

Loosen the shaft clamp screws (2) on the ends of the fork legs.

Working from the left side, use a plastic mallet to drive the wheel shaft (8) out from the opposite side.

Remove the wheel and recover the spacers (3) and (10).

Overhauling the front wheel

Overhauling the front wheel bearings

Before checking the dimensions, check the wear on wheel bearings. Check for wear by hand after cleaning and degreasing the bearings in their seats. Turn the inner race. Check the amount of radial and axial play. Excessive play will cause vibration and make the bike unstable; in this case the bearings must be renewed. To remove the bearings (5) from the wheel hub, proceed as follows.

Position a drift (C) against the inner race of the bearing (5).

Tap the drift with a hammer to drive out the bearing. Apply the drift at different points to keep the bearing square during removal.

Once removed, bearings must not be refitted. Before fitting new bearings, check that the housing is clean and free from scoring and damage.

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

Avoid getting grease on the braking surface of the disc during these operations as this could impair braking efficiency. Using a tubular drift (D) which bears only on the outer ring of the bearing, drive the bearing fully into its seat. Ensure that spacer (6) is fitted between the two wheel bearings.

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

Overhauling the front wheel shaft

Check the wheel shaft for straightness.

Turn the pin on a reference surface and measure maximum distortion using a feeler gauge (see Sect. C 1.1, Front wheel).

Maximum permissible distortion: 0.05 mm.

The surfaces of the shaft must be free of any cracks, dents, scoring or any signs of damage, however light.

Localised polished areas are permitted.

Overhaul of the front and rear rim

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

Visually inspect the wheel for cracks, scoring and deformation; change the wheel if damaged.

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

Using a dial gauge, measure rim runout and out-of-round relative to the shaft axis (see Sect. C 1.1, Front wheel).

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

Maximum permissible rim runout 1 mm (0.04 in.).

Maximum permissible rim runout 0.5 mm (0.02 in.).

Refitting the front wheel

When all the necessary inspections have been completed, refit the wheel as follows. Lubricate the shank and thread of the wheel shaft (8).

Fit the front wheel between the fork legs, installing spacer (10) in-between wheel hub and right-hand fork bottom end, and spacer (3) in-between wheel hub and left-hand fork bottom end.

Position the front wheel considering that arrow (E), marked on wheel left-hand side, indicates direction of rotation when running.

Fit service tool no. 8000.70139 on the wheel shaft (8).

Drive the shaft (8) fully home into the wheel hub, inserting the locating peg of the service tool in the special notches at the bottom end of the fork.

Grease the thread and the underside of the head of shaft nut (1), then screw it onto the end of the wheel shaft.

Tighten the nut (1) to the specified tightening torque (Sect. C 3, Frame torque settings).

Grease the threads and undersides of the heads of screws (A).

Screw in the two screws (A) securing the brake calliper (B).

Tighten the screws (A) to the specified first-stage torque (Sect. C 3, Frame torque settings).

Operate the front brake lever two or three times.

Hold the lever pulled in towards the grip and tighten the calliper screws (A) to the specified torque (Sect. C 3, Frame torque settings).

Check that the brake discs turn freely inside the callipers.

Before tightening the screws (2), lower the bike to the ground and push up and down on the handlebar to load the suspension; so the fork legs will become properly seated onto the wheel shaft.

Lubricate the screws (2).

Tighten the screws (2) to the specified torque (Sect. C 3, Frame torque settings), proceeding in a 1-2-1 sequence.