ENGINE MECHANICAL
SERVICE MANUAL NUMBER 22
90-860074--1 FEBRUARY 2002 Page 3A-25
Early Model Cylinder Head Gasket - Torque Sequence and Specifications
IMPORTANT: Cylinder head bolts may be installed as many as three times, and then
must be replaced. Replace if any doubt exists.
IMPORTANT: Observe the following assembly notes:
• Lubricate the underside of all 14 mm (center) bolt heads and threads with Molykote.
Lubricate the underside of all 12 mm (side) bolt heads and threads with clean SAE
30 W engine oil.
• Position cylinder heads, one at a time, ensuring that the gaskets are completely cov-
ered by the cylinder heads themselves. Install cylinder head end spacers, formed
spacer-washers and bolts. Temporarily finger tighten the bolts.
• Hand tighten intake/exhaust manifold to cylinder heads to align sides of cylinder
heads. Then, recheck for proper coverage of gaskets.
TORQUE PROCEDURE DURING ASSEMBLY
1. In sequence torque 14 mm bolts to 30 Nm (22 lb-ft). Repeat using same specification
(to ensure better preload).
2. In sequence tighten each 14 mm bolt through an angle of 70 degrees.
3. In sequence tighten each 14 mm bolt through ANOTHER angle of 70 degrees.
4. In sequence torque port and starboard 12 mm bolts to 30 Nm (22 lb-ft).
5. In sequence tighten STARBOARD 12 mm bolts through an angle of 85 degrees
〈± 5 degrees)
6. In sequence tighten PORT 12 mm bolts through an angle of 85 degrees 〈± 5 degrees)
2
1
4
5
6
7
8
9
10
11
12
13
14
15
16
17 18 19 20
21 22 23 24 25 26
3
1
2
3
4
6
8
9
11
10
12 13 14
7
5
15 16 17 18
75515
b
b
a
c
c
c
a
b
b
a
c
Cylinder Head Assembly And Torque Sequence Diagram
a-Center Bolt Set
b-Side Bolt Set
c-End Spacer
To Next Page
Loading...
Need help?
General