Checking the pre-tensioning of tie bolt:

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Tie bolt is tightened using hydraulic jack and bolts.

1. Before commencing work Refer to manufacturer instruction for correct tightness values.
2. Take crankshaft deflection
3. Remove the thread protecting hoods from all tie rods and clean the contact face of the intermediate ring
4. Mount pre-tensioning jacks on two tie rods placed opposite to each other, lower part of the jack rests on intermediate ring.
5. Connect both pre-tensioning jacks to the high-pressure oil pump and vent the system
6. Operate the pump until the pressure up to 600 bar and maintain same
7. Check with feeler gauge, if there is any clearance between the tie rod upper nut and the intermediate ring.
8. If any clearance exists, tighten the nut with tommy bar until it seats firmly on the intermediate ring and then release the pressure.
9. If no clearance exists, the pressure can immediately be released.
10. All the tie rods have to be checked in this manner in the sequence of (1-1),(2-2),(3-3),(4-4), (5-5), (6-6) as shown in fig.