Cylinder Head Assembly: Specifications

Fastener Tightening Specifications








General











Overhaul

Engine Mechanical Specifications

General

Overhaul

Tightening Sequence

Intake Manifold Tightening Sequence:

Intake Manifold

- Tighten the intake manifold bolts to 5 Nm (44 inch lbs.) on the first pass.
- Tighten the intake manifold bolts to 5 Nm (44 inch lbs.) on the second pass.
- Inspect the intake manifold joints for signs of intake manifold shifting. Correct as required.
- Tighten the intake manifold bolts to 10 Nm (89 inch lbs.) on the third pass.
- Tighten the intake manifold bolts to 12 Nm (106 inch lbs.) on the final pass.

Cylinder Head Tightening Sequence:

Cylinder Head

Tighten the cylinder head bolts.
- Tighten the cylinder head bolts a first pass in sequence to 30 Nm (22 ft. lbs.)
- Tighten the cylinder head bolts a second pass in sequence to 30 Nm (22 ft. lbs.) then an additional 120 degrees using J 36660-A.
- Tighten the bolts (1, 2, 3, 6, 7, 8, 9, 10, 11, 14, 16, 17) an additional 60 degrees, bolts (15, and 18) an additional 45 degrees, and bolts (4, 5, 12, and 13) an additional 30

Exhaust Manifold

- Center Bolt 35 Nm (26 ft. lbs.)
- Nut 16 Nm (12 ft. lbs.)
- Stud 20 Nm (15 ft. lbs.)

Flywheel

Flywheel Bolt
- First Pass 40 Nm (30 ft. lbs.)
- Second Pass 80 Nm (59 ft. lbs.)
- Final Pass 100 Nm (74 ft. lbs.)