Cylinder head assemblies: camshafts
Inspecting the camshafts
Check the cam contact surfaces for scratches, grooves, steps and waving. Worn cams are frequently the cause of poor
timing, which leads to loss of engine power.
Install the camshaft between two centres and check for distortion using a dial gauge:
- service limit: 0.1 mm.
Note
The effective distortion will be half the total reading obtained on the dial gauge.
Each camshaft is stamped with an identification letter:
O: horizontal;
V: vertical.
Checking the oil seals