Mercury D4.2L D-Tronic Service Manual

ENGINE MECHANICAL SERVICE MANUAL NUMBER 22
Page 3A-60 90-860074--1 FEBRUARY 2002
14. Following the same sequence tighten each 14 mm bolt through an angle of 70 degrees
using a Torque Angle Gauge.
15. In sequence tighten PORT and STARBOARD 12mm cylinder head bolts to 30 Nm (22
lb-ft).
16. In sequence tighten only the STARBOARD 12mm cylinder head bolts through an angle
of 85 ± 5 degrees using a Torque Angle Gauge.
17. In sequence tighten only the PORT 12mm cylinder head bolts through an angle of 85
± 5 degrees using a Torque Angle Gauge.
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
18. Tighten each 14 mm bolt through ANOTHER 70 degrees following the same sequence.
CAUTION
Avoid component or engine failure. Cylinder heads require additional angular
torque and conventional torque application after the first 20-30 minute run-in and
then, after the first 100 hours or first operating season whichever occurs first.
19. Remove exhaust manifold.
20. Refer to the appropriate sections and install the following:
a. Lifters and retainers.
b. Push rods.
c. Rocker arm assemblies.
21. Install rocker arm oil feed line using 2 new sealing washers at each banjo fitting and bolt.
Torque each banjo bolt to 12.7 Nm (112 lb-in.).
22. Install water manifold strip with new gaskets on cylinder heads. Torque bolts with
washers to 11.8 Nm (104 lb-in.) in a diagonal pattern from centermost to outer ends.
23. Complete engine assembly.

Mercury D4.2L D-Tronic Specifications

General

Brand	Mercury
Model	D4.2L D-Tronic
Category	Engine
Language	English