Cylinder Head - Inspection (Camshaft Runout, Cam Height, Journal Clearance)
EM-224prose procedureCam height standards differ between CD17 and CD20 (intake and exhaust).
CYLINDER HEAD — Inspection
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.
Camshaft Cam Height
- 1Measure camshaft cam height.
SEM730B - 2If wear is beyond the limit, replace camshaft.
Cam height: Standard (Unit: mm (in))
Intake
CD1744.45 - 44.50 (1.7500 - 1.7520)
CD2049.20 - 49.30 (1.9370 - 1.9409)
Exhaust
CD1745.45 - 45.50 (1.7894 - 1.7913)
CD2049.15 - 49.25 (1.9350 - 1.9390)
CAMSHAFT JOURNAL CLEARANCE
NOTE
Using micrometer
Camshaft Journal Clearance
- 1Measure the inner diameter of camshaft bearings. Standard inner diameter: 30.000 - 30.021 mm (1.1811 - 1.1819 in). Tighten bracket bolts to the specified torque.
SEM727B - 2Measure the outer diameter of camshaft journals. Standard outer diameter: 29.935 - 29.955 mm (1.1785 - 1.1793 in). If clearance exceeds the limit, replace camshaft and/or cylinder head. Standard clearance: 0.045 - 0.086 mm (0.0018 - 0.0034 in); Limit: 0.1 mm (0.004 in)
SEM728B
| Specification | Value |
|---|---|
| Camshaft runout limit (TIR)0.0020 in | 0.05mm |
| Camshaft bearing standard inner diameter1.1811 - 1.1819 in | 30.000 - 30.021mm |
| Camshaft journal standard outer diameter1.1785 - 1.1793 in | 29.935 - 29.955mm |
| Camshaft journal standard clearance0.0018 - 0.0034 in | 0.045 - 0.086mm |
| Camshaft journal clearance limit0.004 in | 0.1mm |
Camshaft runout limit (TIR)0.0020 in
0.05mm
Camshaft bearing standard inner diameter1.1811 - 1.1819 in
30.000 - 30.021mm
Camshaft journal standard outer diameter1.1785 - 1.1793 in
29.935 - 29.955mm
Camshaft journal standard clearance0.0018 - 0.0034 in
0.045 - 0.086mm
Camshaft journal clearance limit0.004 in
0.1mm