Service Manual
Page 34 of 50

*NOTE* This service manual is for a NON EN10 modified engine. Whilst most of the information is relevent, there are some critical differences.
For more information on EN10 modified engines, please contact
Mick Broom at Broom Development Engineering on +44 (0)1327 353023

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Take care when removing the clutch pressure plate that the 6mm ball inside the operating mushroom is not lost. The plates may be removed with the fingers; the last two plates may need the use of a small wire hook for access. Examine the plates for signs of overheating which will show as surface discolouration and lack of flatness.
Check the friction plates for wear; the standard thickness is mm and they may be used until they are worn down to mm. As the plates wear the pressure exerted by the clutch springs is reduced. If the thickness of the assembled plate becomes less than mm clutch slip may occur.
If overheating of the plates has occurred, it is quite likely that the clutch springs will have been affected. The standard spring length is mm and the springs should be renewed unless their length exceeds mm.
After a considerable mileage burrs may form on the driving teeth of the clutch plate. Unless the slots in the outer drum and the splines in the inner drum are severely notched this should have no effect on the clutch performance. Any burrs present should be removed with a fine file.

Notches in the slots or splines of the clutch will cause difficulty in freeing the clutch under load and any parts showing wear of this kind should be renewed.
 

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