Camshaft inspection (4JJ3 with DPD)

1. Visual inspection

1) Inspect the camshaft journal and cam for the following.

2. Camshaft runout measurement

1) Put the camshaft on the V-block.

2) Slowly turn the camshaft to measure the camshaft runout using a 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	40.8 mm { 1.606 in }
	Limit	39.8 mm { 1.567 in }
Exhaust	Standard value	40.8 mm { 1.606 in }
	Limit	39.8 mm { 1.567 in }

4. Camshaft journal measurement

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

Camshaft journal diameter

Inlet	Standard value	29.909 to 29.930 mm { 1.17752 to 1.17834 in }
	Limit	29.809 mm { 1.17358 in }
Exhaust	Standard value	29.909 to 29.930 mm { 1.17752 to 1.17834 in }
	Limit	29.809 mm { 1.17358 in }
Uneven wear	Limit	0.05 mm { 0.0020 in }

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

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

Clearance between the camshaft bracket inner diameter and the journal diameter

Inlet	Standard value	0.070 to 0.112 mm { 0.00276 to 0.00441 in }
	Limit	0.15 mm { 0.0059 in }
Exhaust	Standard value	0.070 to 0.112 mm { 0.00276 to 0.00441 in }
	Limit	0.15 mm { 0.0059 in }