Valve clearances (Triumph Rocket III)

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Camshaft, valve, valve shim and valve seat wear affect the valve clearances. The effect of this wear is to change the clearance between the camshaft and the adjustment shim, causing engine noise and/or improper running. If the valve clearances are incorrect, permanent damage to components in the valve-train will take place and engine performance will be affected.

Correct valve clearances are in the range given in the table below.

Inlet	0.10 to 0.15 mm
Exhaust	0.15 to 0.20 mm

Note: Valve clearance adjustment must be carried out with the engine cold.

1. Remove the cam cover (see page 3.5).

2. Remove a spark plug from each cylinder to reduce compression resistance when turning the engine.

3. Select a high gear and, using the rear wheel, turn the engine over until a pair of camshaft lobes are positioned pointing directly away from the valves.

4. Using feeler gauges, measure and record the clearances for this pair of valves only.

5. Repeat the process until the clearances for all valves have been checked.

Information copied from this resource [MotoInstruction.ru]

If any of the recorded clearances fall outside the specified range, adjustments must be made. If all measured clearances are within tolerance, refit the cam cover (see page 3.6).

See this article in russian language

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Article about repair motorcycles «Triumph Rocket III» (2004-2018): «Valve clearances»: https://motoinstruction.ru/en/Triumph/Rocket/III/engine/repair/111812 <a href="https://motoinstruction.ru/en/Triumph/Rocket/III/engine/repair/111812">Valve clearances</a> - article about repair motorcycles «Triumph Rocket III» (2004-2018) from section «Engine repair». [url=https://motoinstruction.ru/en/Triumph/Rocket/III/engine/repair/111812]Valve clearances[/url] - article about repair motorcycles «Triumph Rocket III» (2004-2018) from section «Engine repair».