CYLINDER HEAD
EM-114prose procedureInspection
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 |
Head surface flatness (Standard)0.0012 in
Less than 0.03mm
Head surface flatness (Limit)0.004 in
0.1mm
If beyond the specified limit, replace or resurface.
IMPORTANT
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). After resurfacing cylinder head, check that camshaft rotates freely by hand. If resistance is felt, cylinder head must be replaced.
| Specification | Value |
|---|---|
| Nominal cylinder head height5.390 - 5.398 in | 136.9 - 137.1mm |
Nominal cylinder head height5.390 - 5.398 in
136.9 - 137.1mm
CAMSHAFT VISUAL CHECK
Check camshaft for scratches, seizure and wear.
Camshaft Runout
- 1Measure camshaft runout at the center journal.
SEM926C - 2If it exceeds the limit, replace camshaft.
| Specification | Value |
|---|---|
| Camshaft runout (Total indicator reading) (Standard)0.0008 in | Less than 0.02mm |
| Camshaft runout (Limit)0.004 in | 0.1mm |
Camshaft runout (Total indicator reading) (Standard)0.0008 in
Less than 0.02mm
Camshaft runout (Limit)0.004 in
0.1mm