1 Refitting the steering tube components
Important
The steering tube bearings are identical but in no case may their components be swapped during refitting.
Clean all contact surfaces and lubricate with the recommended grease.
To fit the outer rings (8) of bearings (6) to the steering tube, use tool (D) no. 88713.1062;
Proceed as follows:
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heat the steering tube to 150 °C;
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fit the outer rings (8) in their seats on the steering tube;
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fit the fixed bush (9) with threaded hole of the tool into the lower ring;
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fit the other movable bush (10) into the upper end of the tool and drive it fully home against the upper bearing race;
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tighten the nut (11), and use a wrench to seat the outer rings (8) fully in the steering tube;
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leave the tool fitted until the steering tube has cooled down to ensure that bearings are properly seated.
Insert the sealing ring (5) (with the rim facing upwards) and the inner ring (A) of the bottom bearing (6) onto the steering shaft after heating it for about 10 minutes to 120 °C.
Insert drift (E) no. 88713.1072.
Push the inner ring (A) on the sealing ring (5), manually pushing for at least 10-15 seconds.
Lubricate the inner ring (A) with the recommended grease.
Fit the ball race (B) on the steering shaft with the smaller diameter of the cage facing upwards, and grease the ball race.
Insert the steering shaft into the steering tube, and push it in until it is axially seated.
Fit the bottom yoke assembly to frame.
Grease the ball race (B) and fit it to the upper outer ring (8) of the frame.
Fit the inner ring (A) of the upper bearing (6) to the steering head, with the larger diameter side of the race facing upwards.
Install the sealing ring (5) with the flat side facing upwards.
Tighten the adjuster ring nut (3) by hand until it seats against the sealing ring (5).
Fit special bush (C) no. 88713.1058 to the ring nut (3) on which the torque wrench must be fitted.
Apply recommended threadlocker on thread and tighten adjuster ring nut (3) to 30 Nm ±5%.
Fit the steering head (2) on the ring nut (3), aligning the fork leg seats with the corresponding seats on the bottom yoke.
Refit the fork legs. Apply recommended grease to the screw (1).
Tighten screw (1) on steering head to a torque of 18 Nm ±5%.
Refit the handlebar and the U-bolts (Refitting the handlebar).
Refit the headlight fairing (Refitting the headlight fairing).
Refit the front wheel (Refitting the front wheel).
Refit the front brake callipers (Refitting the front brake system).