TIE RODS

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Marine engines are manufactured with different components, which are held and tied together to complete the engine structure with the help of tie rods.Tie rod is a long well built rod with bolts at both the end. This rod hold on the three major engine components i.e. Cylinder block, “A” frame, and crankcase in compression and transmits the firing load to the bed plate.

The tie rods are hydraulically tightened so that the whole engine can be held in compression.

FUNCTION OF TIE RODS

  1. Fatigue
  2. Alignment and
  3. Bending stresses
  4. Fretting

TIGHTINING PROCEDURE

  • Slacken all pinching screws.
  • Mount hydraulic unit
  • Pressure Up to 700 bar

STAY BOLTS

REMOVING OF BROKEN TIE ROD

  • Passing a wire loop down the tie rod and lift it up
  • Jack it up and place the distance pieces to lift it up.