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© 200324 3-1 Inspection and adjustment PE ENGINE CF65/75/85 series 2 5 3. INSPECTION AND ADJUSTMENT 3.1 INSPECTION AND ADJUSTMENT, VALVE GEAR BRIDGES } Loosening and tightening the lock nuts (B) of the bridges may cause severe engine damage if the bridge is fitted over the valves. 1. Remove the valve covers. See "Removal and installation". 2. Undo the adjusting nuts of the valve rockers in such a manner that there is no longer tension on the rockers. 3. Remove the lubricating oil strip. 4. Remove the entire rocker seat. Mark the position to enable reinstallation in the same position. 5. Remove the bridge from the valves and place it in a vice. 6. Slacken the lock nut (B). 7. Reposition the bridge in the same position in the engine over the valves. 8. Firmly press on the bridge centre (above the guide pin) with your thumb. 9. Hand-tighten the adjusting screw (A) until the bridge starts to move. The adjusting screw (A) now touches the valve. 10. Turn adjusting screw (A) through another 90 ° and carefully remove the bridge from the valves. 11. Place the bridge in a vice and tighten the lock nut (B) to the specified torque without turning the adjusting screw (A). See "Technical data". 12. Reposition the bridge over the valves. i 400161 i 400301 A B |