Ducati Diavel
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Ducati Diavel Service Manual: Shimming the shafts

Before assembling the crankcase halves, calculate the shims required to obtain the correct end float of the crankshaft and gearbox shafts.

To determine the correct shim thickness proceed as follows.

Shimming the crankshaft

Shimming the crankshaft

Shimming the crankshaft

Add 0.30 Mm preload for crankshaft axial bearings to bed in correctly into their seats (inner rings seated inside outer ring).

Thus, we obtain: sa=la1+la2+0.30-La.

To calculate the thickness of each shim note that: sa=sa1+sa2 where "sa1" and "sa2" represent the shims for the clutch-side crankcase half 1 and the alternator-side crankcase half 2.

Considering the alignment of the shaft, this gives: sa1=la1+0.15-La/2; and finally, the second shim thickness: sa2=sa-sa1.

Shimming the crankshaft

Shimming the crankshaft

In addition to the above procedure, the following is a practical shimming method, providing a guide on how to calculate the crankshaft shim thickness accurately.

Install a shim of minimum thickness (1.90 Mm) on each side of the crankshaft to prevent contact between the crankshaft web and the crankcase.

Install the crankshaft and assemble the two crankcase halves.

Fit four m8 screws in the seats indicated in figure and tighten them to a torque of 19 nm (min. 17 Nm - max. 21 Nm) (sect. 3 - 3, Engine torque settings).

Shimming the crankshaft

Place a dial gauge (c) with magnetic base on a support plate fixed to crankcase.

Bring the stylus into contact with the end of the crankshaft and set the dial gauge to zero in this position.

Shimming the crankshaft

Place a lever (d) between crankcase and crank web of the crankshaft pushing towards dial gauge.

Note on the dial gauge the total clearance and add a preload of (0.30 Mm) plus the thickness of the shims used (1.90X2=3.8 Mm).

Divide the resulting value by two to obtain the thickness of the shim packs to be installed at either end of the crankshaft.


After assembling the crankcase halves, the crankshaft should turn with some interference in the new bearings.

Shimming the crankshaft

Shimming the gearbox shafts

The following thickness spacers are supplied as spare parts.

Shimming the gearbox selector drum

The following thickness spacers are supplied as spare parts.

Reassembly of the crankcase halves
The crankcase halves must be in good condition and perfectly clean. The mating surfaces must be perfectly flat and free from burrs. Overhauling the alternator-side crankcase half The following pa ...

Reassembly of the crankcase halves
If removed, apply threadlocker on the screw (36), insert it with the washer (37) on the crankcase half and tighten it to The torque of 8 nm (min. 7 Nm - max. 9 Nm) (sect. 3 - 3, Engine torque sett ...

Other materials:

Lcd unit functions
Speedometer. Gives road speed. Rev counter. Indicates engine revs per minute. Clock. Water temperature indicator. Indicates engine coolant temperature. Important Stop riding if the temperature reaches the maximum value, otherwise the engine might be damaged. ...

Introduction to the "hands free" system
The hands free system allows the rider to start the engine without physically using the ignition key. The ignition key merely has to be in the vicinity of the motorcycle, such as in the rider's pocket, for example, in order to use the vehicle. Compared to the standard ignition switches the h ...

Removal of the clutch master cylinder assembly
Warning The clutch master cylinder manufacturer advises against servicing of the clutch master cylinder (1) due to the safetycritical nature of this component. Incorrect overhaul of this component could endanger rider safety. Maintenance operations of the master cylinder are limited to replac ...

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