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RR750M ENGINE 17. Tappets MUST rotate, a circular wear 22. Fit new split pin to one end of rocker shaft. condition is normal. Tappets with this wear pattern can be refitted provided there are no other defects. 18. If a tappet is not rotating check camshaft lobes for wear. Fit new tappet ensuring it 23. Slide a plain washer over the long end of the shaft to contact the split pin. 24. Fit a wave washer to contact plain washer. RR2937M 25. Early type rocker arms are angled. They must so that valve end of rocker arms angle away from each other as shown. 26. On later type rocker arms the valve end I S offset and must be fitted as shown. 27. Early and late rocker arms are interchangeable provided complete set is changed. 19. Fit a new hydraulic tappet if area of pushrod contact is rough or damaged. 20. Fit a new pushrod if it is bent or has a rough or damaged ball end or seat. Assemble rocker shafts 21. Assemble rocker shafts with identification RR2899M 28. Assemble rocker arms, brackets and springs to rocker shaft. 29. Compress the springs, fit wave washer, plain washer and split pin to end of rocker shaft. 30. Fit locating bolts through brackets. Place to one side. RR2900M CAUTION: If incorrectly assembled shafts and rockers are fitted to engine, oil supply to rocker shafts will be restricted. |