Ducati Diavel
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Ducati Diavel Service Manual: Checking valve clearances

To check the valves clearance, it is necessary to have access to the cylinder head covers and then remove the components listed below.

Checking valve clearances


Unscrew the two fixing screws (1) of the cover (2) according to the crankshaft.

Checking valve clearances


Fit the tool handgrip 88713.0123 In the holes of the generator cover to be able to turn the crankshaft so that the valve on which the control is carried out is in rest position.

With the valve in the rest position, slide a feeler gauge between rocker arm (a) and the lowest side of the cam (b) to measure the clearance.

The clearances must be within the specified limits:


Checking valve clearances


Checking valve clearances


With the valve in the rest position, slide a feeler gauge between closing rocker arm (c) and the highest side of the cam (d) to measure the clearance.


Checking valve clearances


Checking valve clearances


Checking valve clearances


If detected values exceed the specified limits, replace opening and/or closing shims, as described in paragraph "removing the valves" (sect. 9 - 4.5), With an adequate height to obtain the specified clearance.

Note

Opening rocker arm shims measuring from 1.8 To 3.45 Mm and closing rocker arm shims measuring from 2.2 To 4.5 Are available as spare parts. The size is punched on the shim.

Remove the handgrip tool 88713.0123 From the hole of the generator cover.

Make sure that the o-ring (3) is fitted on the cover (2).

Checking valve clearances


Refit the external cap (2) by tightening the two retaining screws (1) to a torque of 10 nm (min. 9 Nm - max. 11 Nm) (sect. 3 - 3, Engine torque settings).

Checking valve clearances


Checking valve clearancesChecking valve clearances


Change timing belts

To replace the timing system belts follow the procedures described in paragraph "removal of the movable tensioner/timing belt" and "refitting the timing belts" (sect. 9 - 4.2).

Changing the engine oil and filter cartridge
Note This operation has to be carried out with hot engine (but turned off) because the oil in these conditions is more fluid and its evacuation is faster and complete. Remove the drain plug (3) w ...

Spark plugs replacement
Check the colour of the ceramic insulation around the central electrode: an even, light brown colour indicates the engine is in good condition and running at the right temperature. Inspect the c ...

Other materials:

Adjusting of the air-gap phonic wheel sensor
(For front as well as rear sensor) in each case of maintenance that foresees: Replacement or refitting of the wheel Replacement or refitting of the phonic wheel (1) or (2) Replacement or refitting of the brake discs Replacement or refitting of the speed sensor (3) or (4) (Front) replacem ...

Anti-pollution system and auto-adaptive strategy
Efficacy of the catalytic converter and oxygen sensors To comply with current emissions legislation, the diavel is equipped with a trivalent catalytic converter, which oxidises co (carbon monoxide) and hc (unburnt hydrocarbons) and reduces nox (nitrogen oxides). The image shows the exhaus ...

Timing system
Desmodromic (type) with four valves per cylinder, operated by eight rocker arms (4 opening rockers and 4 closing rockers) and two overhead camshafts. It is operated by the crankshaft through spur gears, belt rollers and toothed belts. Desmodromic timing system (fig. 159) Opening (or upp ...

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