Mercury D4.2L D-Tronic

ENGINE MECHANICAL
SERVICE MANUAL NUMBER 22
90-860074--1 FEBRUARY 2002 Page 3A-59
9. Lightly HAND tighten bolts in torque sequence.
75515
2
1
5
6
7
8
9
10
11
12
13
14
15
16
17 18
19
20
21 22 23 24 25 26
3
4
4
1
2
3
6
8
9
11
10
12 13 14
7
5
15 16 17 18
a
b
Torque Sequence Diagrams
a-D4.2L D-Tronic
b-D2.8L D-Tronic
10. Temporarily install intake / exhaust manifold without gaskets and FINGER-tighten each
nut with locking washer.
11. Slightly loosen 12 mm and 14 mm bolts as needed, to allow cylinder heads to ALIGN
as you HAND tighten exhaust manifold nuts.
12. HAND TIGHTEN all 14 mm and 12 mm cylinder head bolts in torque sequence.
13. In torque sequence tighten 14 mm cylinder head bolts to 30 Nm (22 lb-ft). Refer to
Torque Sequence Diagrams. Repeat using the same specification, to ensure the best
preload, before proceeding.