Camshaft Visual Check Nissan Quest III

Camshaft Visual Check

Check camshaft for scratches, seizure and wear. Replace if necessary.

Scheme 248

1. Put V-block on precise flat bed and support No. 2 and No. 4 journal of camshaft as shown.
2. Set dial gauges vertically to No. 3 journal as shown.
3. Turn camshaft in one direction slowly by hand, measure the camshaft runout on the dial gauges. Runout is the largest indicator reading after one full revolution. Camshaft Runout Standard : Less than 0.02 mm (0.0008 in) Limit : 0.05 mm (0.0020 in) PBIC0929E
4. If actual runout exceeds the limit, replace the camshaft.

Scheme 249

1. Measure camshaft cam lobe height as shown. Refer to " «CAMSHAFT AND CAMSHAFT BEARING»(ref-239942-S11864220952006080400000) ".
2. If wear has reduced the lobe height below specifications, replace the camshaft.

Scheme 250

1. Measure outer diameter of camshaft journal as shown. Standard outer diameter, No.1 : 25.935 - 25.955 mm (1.0211 - 1.0218 in) Standard outer diameter, No.2, 3, 4 : 23.445 - 23.465 mm (0.9230 - 0.9238 in)

Scheme 251

1. Tighten camshaft bracket bolts to specified torque. Refer to " «INSTALLATION»(ref-239942-S15012588612006080400000) ".
2. Using inside micrometer, measure inner diameter "A" of camshaft bearing. Standard inner diameter No. 1 : 26.000 - 26.021 mm (1.0236 - 1.0244 in) Standard inner diameter No. 2, 3, 4 : 23.500 - 23.521 mm (0.9252 - 0.9260 in)