Protege L4-1839cc 1.8L DOHC (1990)
(6) Loosen the camshaft cap bolts in two or three steps in the order shown in the image.
(7) Remove the camshaft caps.
(8) Measure the oil clearances.
Oil clearance:
D.035-0.081mm (0.0014-0.0032 in)
Maximum: 0.15mm (0.006 in)
(9) If the oil clearance exceeds specification, replace the cylinder head.
7. Measure the camshaft end play. If the end play exceeds specification, replace the camshaft and/or the cylinder head.
End play : 0.07-0.19mm (0.0028-0.0075 in)
Maximum: 0.20mm (0.008 in)