Camshaft inspection (RZ4E-TC)

1. Visual inspection

1) Inspect the camshaft journal, cam section, and gear sections for the following.

2) Inspect the camshaft sprocket and inlet camshaft sub gear for the following.

2. Camshaft runout measurement

1) Put the camshaft on the V-block.

2) Slowly turn the camshaft to measure runout of the dial gauge.

Limit: 0.05 mm { 0.0020 in }

3. Cam lobe height measurement

1) Measure the height of the cam lobe using a micrometer.

Cam lobe height

Inlet	Standard value	40.287 mm { 1.5861 in }
	Limit	39.287 mm { 1.5467 in }
Exhaust	Standard value	40.552 mm { 1.5965 in }
	Limit	39.552 mm { 1.5572 in }

4. Camshaft journal measurement

1) Measure the diameter of the camshaft journal using a micrometer.

Camshaft journal diameter

Standard value	23.943 to 23.964 mm { 0.9426 to 0.9435 in }
Limit	23.843 mm { 0.9387 in }
Limit	0.05 mm { 0.0020 in } Uneven wear

2) Measure the inner diameter of the camshaft cap using a cylinder gauge.

3) Calculate the clearance from the camshaft cap inner diameter and journal diameter measurements.

Clearance between the camshaft cap inner diameter and the journal diameter

Standard value	0.036 to 0.078 mm { 0.0014 to 0.0031 in }
Limit	0.12 mm { 0.0047 in }