Camshaft Inspection

Camshaft

Check journals and cam faces for wear or damage.

If any defect is found, replace camshaft.

Cam Wear

1)Using micrometer, measure cam height “a” and cam width “b”.

2)Calculate valve lift “c” using the following formula.
“c” = “a” – “b”

3)If valve lift “c” is below its specification, replace camshaft.

Valve lift “c” (Reference)

Intake cam: 8.5 mm (0.33 in.)

Exhaust cam: 8.0 mm (0.31 in.)

Camshaft Journal Wear

Check camshaft journal diameter using micrometer.

If measured diameter is not as specified, replace camshaft.

Camshaft journal diameter

No.1: 43.600 – 43.615 mm (1.7166 – 1.7171 in.)

No.2: 43.200 – 43.215 mm (1.7008 – 1.7013 in.)

No.3: 30.000 – 30.015 mm (1.1811 – 1.1816 in.)

Camshaft Housing

•Check camshaft journals and camshaft housings for pitting, scratches, wear or damage.
If any defect is found, replace camshaft housing.

•Check camshaft journal bore diameter using bore gauge.
If measured diameter is not as specified, replace camshaft housing.

Camshaft journal bore diameter

No.1: 43.646 – 43.671 mm (1.7183 – 1.7193 in.)

No.2: 43.246 – 43.271 mm (1.7025 – 1.7035 in.)

No.3: 30.045 – 30.070 mm (1.1828 – 1.1838 in.)

1.	Camshaft journal bore No.1	4.	Camshaft journal bore No.3
2.	Camshaft journal bore No.2	5.	Crankshaft pulley side

Camshaft Pulley

Check camshaft pulley for pitting, scratches or damage.

If any defect is found, replace camshaft pulley.

Intake Camshaft Gear and Exhaust Camshaft Gear

Check intake camshaft gear and exhaust camshaft gear for pitting, scratches or damage.

If any defect is found, replace intake and/or exhaust camshaft gear.