CYLINDER HEAD
EM-39prose procedureCAUTION
When installing sliding parts such as camshaft and oil seal, be sure to apply new engine oil on their sliding surfaces.
When tightening cylinder head bolts, camshaft sprocket bolts and camshaft bracket bolts, apply new engine oil to thread portions and seat surfaces of bolts.
Attach tags to valve lifters so as not to mix them up.
Removal
This removal is the same procedure as those for timing chain. Refer to "Removal" in "TIMING CHAIN".
Disassembly
- 1Remove valve components with Tool.
SEM152D - 2Remove valve oil seal with a suitable tool.
Inspection
CYLINDER HEAD DISTORTION
| Specification | Value |
|---|---|
| Head surface flatness (Standard)0.0012 in | Less than 0.03mm |
| Head surface flatness (Limit)0.004 in | 0.1mm |
| Resurfacing limit (A + B, head + block resurfacing)0.008 in maximum | 0.2mm |
| Nominal cylinder head height4.638 - 4.646 in | 117.8 - 118.0mm |
Head surface flatness (Standard)0.0012 in
Less than 0.03mm
Head surface flatness (Limit)0.004 in
0.1mm
Resurfacing limit (A + B, head + block resurfacing)0.008 in maximum
0.2mm
Nominal cylinder head height4.638 - 4.646 in
117.8 - 118.0mm
If beyond the specified limit, replace it or resurface it.
Resurfacing limit: The resurfacing limit of cylinder head is determined by the cylinder block resurfacing in an engine. Amount of cylinder head resurfacing is "A". Amount of cylinder block resurfacing is "B".
After resurfacing cylinder head, check that camshaft rotates freely by hand. If resistance is felt, cylinder head must be replaced.
See also
TIMING CHAIN