JA Purity IV JA Purity IV
JA Purity IV JA Purity IV
  • About The Site
  • Blue Book
  • Public Velo Stuff
  1. You are here:  
  2. Home
  3. Velocette Documents
  4. Valiant Manuals
  5. F62-1R Service Manual
  6. THE CLUTCH OPERATION

F62-1R Service Manual

The Clutch Thrust Rods, etc.

The clutch is operated from the lever at the rear of the gearbox through two thrust rods working inside the primary gear shaft (Fig. 18). These are packed with a special lubricant (L4 Absorbed Oil) during original assembly and this is sufficient in conjunction with oil holes drilled radially through the shaft to last indefinitely. They can be pushed out quite easily for lubrication if required after the gearbox is removed. When fitting note that one end of each is of reduced diameter. The reduced ends must meet in the shaft. To allow for the build-up of manufacturing tolerances one rod is listed in three alternative lengths, and the clutch lever pivot is eccentric; providing an adjustment for the lever.

F62/1R Figure 18 Arrangement of thrust rods

Fig. 18 Arrangement of Thrust Rods when two are used

 With the correct length of push rods and lever adjustment the horizontal distance between the centre of the clevis pin hole in the lever and the real end of the top of the gearbox should be 1/8-in. when the lever is held forward taking out all play between the thrust rods.

Previous article: DISMANTLING THE STARTER SEGMENT AND SHAFT Prev Next article: THE GEARBOX - DISMANTLING Next
Open menu
  • Velocette Documents
    • GTP Manuals
      • F40/5R GTP Instruction Book 1951
    • KSS, KTS Manuals
      • F236/4R Mk. II OHC Instruction Book 1950
      • F42/3R OHC Models 1925-1931 Instruction Book
    • MAC Manuals
      • F469/4R MAC Service Guide 1965
      • F466/2R MAC Owner's Handbook 1955
      • F50/7R MAC Rigid Frame Service Manual 1955
      • F50/4R Supplement
    • MOV and MAC
      • F131-3R Instruction Book 1937
    • MSS Manuals
      • F477 Owners Handbook 1954
    • Venom, Viper, MSS
      • F485/1R Owner's Handbook 1956
      • F484/9R Service Guide 1967
      • F484/11R Service Guide 1971
    • Valiant Manuals
      • F62-1R Service Manual