Norton Service Release Database N44

SERVICE RELEASE N44

NATURE OF RELEASE: Slack drive pegs in rear brake drum MODELS AFFECTED: 1971 Commando engine numbers below PARTS AFFECTED: 062066 Rear Brake Drum DISTRIBUTION: Worldwide- Trade Only EXPLANATION: There is a possibility of the drive pegs in the rear brake drum working loose. The security of the drive pegs is easily checked by visual examination with the rear wheel removed. We recommend that every wheel be checked at the next service since the continued use of a motorcycle with slack drive pegs can result in considerable damage and expense at a later stage. Brake drums especially rechecked for drive pegs security prior to despatch from the factory are marked by either a white paint marking or the symbol 'WWW'. The white paint marking appears on the brake drum periphery adjacent to the sprocket: the 'WWW' marking is stamped on the periphery nearer the drive pegs.   ACTION: Remove the complete rear wheel and separate the rear brake assembly. Take the brake plate assembly from the brake drum. The drive pegs are brazed into the drum. Examine most carefully to ensure that the brazing material has run completely all round the drive peg bosses, when viewed from inside the drum. If there is any doubt whatsoever that the brazing operation has been successful, re-secure following the following instructions: The paddle areas of the drum should be degreased most thoroughly by the use of any organic solvent such as trichlorethylene or carbon tetracloride. The shock absorber paddles must be examined for damage. If in sound condition, mask the drum braking area with 2 thicknesses of masking tape and re-secure the drive pegs from the inside only by manual electric arc welding using welding rods of the type McKay No. 312 (North America) or type Stubbs 65 elsewhere. Norton Villier Canada Limited