CYLINDER HEAD — Disassembly (Cont'd) / Inspection
EM-19prose procedureDisassembly (Cont'd)
- 7Remove valve oil seals with Tool or suitable tool.
SEM766B
Inspection
CYLINDER HEAD DISTORTION
| Specification | Value |
|---|---|
| Head surface flatnessIf beyond the specified limit, replace it or resurface it. | Less than 0.1mm (0.004 in) |
| Resurfacing limit (A + B maximum)Where A = amount of cylinder head resurfacing, B = amount of cylinder block resurfacing | 0.2mm (0.008 in) |
| Nominal cylinder head height | 125.9 - 126.1mm (4.957 - 4.965 in) |
Head surface flatnessIf beyond the specified limit, replace it or resurface it.
Less than 0.1mm (0.004 in)
Resurfacing limit (A + B maximum)Where A = amount of cylinder head resurfacing, B = amount of cylinder block resurfacing
0.2mm (0.008 in)
Nominal cylinder head height
125.9 - 126.1mm (4.957 - 4.965 in)
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". The maximum limit is as follows: A + B = 0.2 mm (0.008 in).
NOTE
After resurfacing cylinder head, check that camshaft rotates freely by hand. If resistance is felt, cylinder head must be replaced.
CAMSHAFT VISUAL CHECK
Check camshaft for scratches, seizure and wear.
CAMSHAFT RUNOUT
- 1Measure camshaft runout at the center journal. Runout (Total indicator reading): Limit 0.05 mm (0.0020 in)
SEM155 - 2If it exceeds the limit, replace camshaft.
| Specification | Value |
|---|---|
| Camshaft runout (Total indicator reading) limitMeasured at center journal | 0.05mm (0.0020 in) |
Camshaft runout (Total indicator reading) limitMeasured at center journal
0.05mm (0.0020 in)