Illustration 1 | g01852017 |
Typical example |
Lubricate the threads and the underside of the head bolts with clean engine oil.
- Tighten the bolts in the sequence that is shown in illustration 1. Torque for the bolts ...
50 N·m (37 lb ft) - Tighten the bolts again to the following torque. ...
100 N·m (74 lb ft) - Tighten the head bolts to the additional amount. ... 225 degrees
- Tighten the bolts again to the following torque. ...
Minimum thickness of cylinder head ...
Illustration 2 | g01854993 |
Typical example |
Note: The maximum distortion of the cylinder head is given in table 1.
Dimension | Maximum Permissible Distortion |
---|---|
Width (A) | |
Length (B) | |
Diagonal Line (C) | |
Illustration 3 | g02328933 |
Typical example |
(D) Valve guide height from the top of the valve guide to the valve spring seat ...
(E) Outside diameter of the valve guides ...
(F) Length of the valve guides ...
(G) Internal diameter of the valve guides ...
(H) Valve depths
- Inlet ...
0.905 to 1.163 mm (0.0356 to 0.0458 inch) - The service limit for the depth of the inlet valve ...
1.41 mm (0.0555 inch) - Exhaust ...
0.876 to 1.131 mm (0.0345 to 0.0445 inch) - The service limit for the exhaust valve depth ...
1.38 mm (0.0543 inch) - The service limit for the depth of the inlet valve ...
Illustration 4 | g02474819 |
Typical example |
(J) Diameter of the parent bore in the cylinder head ...
(K) Seat angle
- Inlet ... 119.15 degrees
- Exhaust ... 89.15 degrees
Illustration 5 | g02475018 |
Typical example |
(L) Seat surface finish ... Ra 0.8 microns
(M) Concentricity of valve seat to valve guide parent bore Maximum Total Indicated Reading (TIR) ...