Aerostar AWD V6-245 4.0L (1990)
Cylinder Head And Block
1.
Apply Silicone Sealer (Loctite 598, F1AZ-19562 A, or equivalent) to the block and cylinder head mating surfaces at the four corners shown.
Install the intake manifold gaskets and again apply sealer to the four corner locations.
NOTE: Once applied, the silicone sealer will set-up in approximately 15 minutes. The intake manifold must be installed immediately after the
sealer is applied.
Lower Intake Manifold Bolt Tightening Sequence
2.
Position the intake manifold on the two guide studs and install the nuts and bolts hand tight. Tighten the intake manifold bolts in four stages
following the sequence shown.
^
4-8 Nm (3-6 ft lb)
^
8-15 Nm (6-11 ft lb)
^
15-21 Nm (11-15 ft lb)
^
21-25 Nm (15-18 ft lb)
3.
Apply Silicone Sealer (Loctite 598, F1AZ-19562 A, or equivalent) to the four locations at the joint where the intake manifold and cylinder heads
meet.
4.
Position valve rocker arm cover gasket in each cover and install valve rocker arm covers. Tighten rocker arm cover bolts evenly to 4-7 Nm (3-5 ft
lb).
NOTE: Valve rocker arm covers are tightened in 2 steps. Tighten bolts to specification. Two minutes later, tighten bolts to the same specification.
