Mitsubishi — >>D<< CYLINDER HEAD BOLT INSTALLATION

A Mitsubishi service procedure — check it applies to your exact model before use.

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Procedure

1. 2. Apply engine oil to the thread of the bolts and to
2. the washers.
3. 3. Using special tool Cylinder head bolt wrench
4. (800410) tighten the bolts to the specified torque,
5. using the tightening sequence shown.
6. Tightening torque: 78 ± 2 N·m
7. 4. Loosen all bolts fully in the reverse order of
8. tightening.
9. 5. Retighten the loosened bolts to in the tightening
10. sequence shown.
11. Tightening torque: 20 ± 2 N·m
12. 6. Make a paint mark across each bolt head and
13. cylinder head.
14. 7. Tighten the cylinder head bolts 90 degrees in the
15. specified order.
16. 8. Tighten the bolts another 90 degrees in the
17. same order as in step 7, and check that the paint
18. marks on the cylinder head bolt are aligned with
19. the paint marks on the cylinder head.
20. NOTE:
21.  If the bolt is turned less than 90 degrees,
22. proper fastening performance may not be achieved.
23. Be careful to turn each bolt exactly 90 degrees.
24.  If the bolt is overtightened, loosen the bolt
25. completely and then retighten it by repeating the

Source: manual:Mitsubishi-2.0L-2.4L-Service-Manual-106992-Revision-D.pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.