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Not Correct Position of Timing Gears


  • 1. Inspect crankcase and timing gear cover for cracks or damage.
  • 2. Using an appropriate solvent, remove sealing compound remnants from crankcase mating surfaces.
  • 3. Check mating surfaces for linear alignment and cleanliness.
  • 4. A ssemble empty crankcase and tighten retaining nuts. Using an inside micrometer, measure main bearing bores.
  • 5. If necessary, lightly break the sharp edges from main bearings bores.
  • 6. Flush oil passages with solvent and blow trough with compressed air.
  • 7. Check oil suction tube for firm seating and tightness; if necessary, refasten with P 50a ball end punch.
  • 8. Check valve lifters and lifter guide bores.
  • 9. Check firm seating of dowel pins aligning timing gear cover.
  • 10. Insert main bearing dowel pins. Install main bearing inserts for Bearing 2 and 3- place the insert half which has the oil passage into the left crankcase half making sure that the passage in the insert lines up with the passage in the crankcase bearing seat; install the other insert halves in the right crankcase half.
  • 11. Install crankshaft and camshaft, check for free rotation.
  • 12. Install thrust washer, crankshaft oil seal and Bearing 1.
  • 13. Note correct positioning of timing gears. (See Fig. 142).
Last modified: Mon, 17 Jan 2005


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