Checking the camshaft
1. Check the camshaft journals for wear. If the shaft journals are significantly worn, replace the camshaft.
Engines 2.0 p / 2.4 l:
- Diameter of a basic neck of a camshaft: 26 mm.
Engine 2.7L:
- Camshaft bearing journal diameter:
- Rated value: 25.964-25.980 mm
- Limit value: 25.914 mm
2. Check the protruding part of the camshaft lobes for damage. If the shaft cams are damaged or their wear exceeds the allowable value, then replace the camshaft.
Camshaft lobe height:
- Rated value:
- 2.0L/2.4L engines:
- Intake: 35.493 mm
- Exhaust: 35.317mm
- Engine 2.7L: 43.95 - 44.15 mm
- Maximum allowable value:
- 2.0L/2.4L engines:
- Intake: 34.993 mm
- Exhaust: 34.817 mm
- 2.7 L engine: 43.450 mm
Engines 2.0 l / 2.4 l. | Engine 2.7 l. |
3. Check the surface of the back of the camshaft cams for damage or significant wear, and replace the shaft if necessary.
4. Check the condition of the camshaft bed (no damage) and oil clearance in the camshaft bearings. If the wear of the camshaft bed exceeds the allowable value, then replace the cylinder head assembly or the camshaft bearing caps.
Camshaft bearing clearance:
- Rated value:
- 2.0L/2.4L engines: 0.040-0.076mm
- 2.7L engine: 0.020-0.061mm
- Limit value (engine 2.7l): 0.1 mm
5. Measure the axial clearance of the camshaft and, if the measured value exceeds the upper limit of the range of nominal values, then replace the camshaft. Replace bearing caps and cylinder head if necessary.
Rated value:
- Engine 2.0L/2.4L: 0.10-0.20mm
- Engine 2.7L: 0.10-0.15mm
Checking the camshaft oil seal
1. Check the seal lip for wear. If the working edge is worn out, then replace an epiploon.
2. Check up a condition of a surface of a camshaft contacting with a working edge of an epiploon. If the shaft surface is worn, replace the camshaft.