Inspection After Removal

WARNING: This page is about a different car, the 2018 Nissan Titan XD. However, it is still accessible from the selected car via links, so may be relevant.

WARNING:

To avoid the risk of injury to eyes and skin, when using caustic solutions, solvents, acids, or alkaline materials follow the manufacturer's recommendations for use and wear appropriate eye protection and protective clothing. Some of these materials are also flammable. To avoid risk of fire or burns, never smoke or allow sparks or flames (such as pilot lights, electrical switches, or welding equipment) in the work area. Avoid spilling onto a hot exhaust manifold which can cause a fire.
When using compressed air for cleaning, to avoid the risk of personal injury from flying debris and dirt:
- Do not exceed 207 kPa (2.111 kg/cm ² , 30 psi).
- Wear appropriate eye protection and protective clothing including gloves.

Clean the camshafts and camshaft caps with a detergent solution or solvent.
Dry the camshafts with compressed air.

Camshaft

Inspect the camshaft lobes and bearing journals for cracks, scratches, and other damage.
Inspect the camshaft gear teeth for excessive wear, fretting, and cracked or broken teeth.
If the camshaft or camshaft gear is damaged, the entire camshaft assembly must be replaced.
If camshaft damage is found, inspect the chain drive, crankshaft, and lubricating oil system for progressive damage.

Cylinder Head

Inspect the camshaft caps and cam towers for cracks or other damage.
If the camshaft bore has corresponding damage on the camshaft, the cylinder head and camshaft must be replaced.
If any camshaft cap is damaged, the cylinder head must be replaced.

Rocker Arm and Hydraulic Lash Adjuster

Inspect the rocker arms. Replace if damaged.
Inspect the hydraulic lash adjusters. Replace if damaged.

Measurement

Measure the peak of the camshaft lobes (B) and (C) using a suitable tool (A).

Courtesy of NISSAN NORTH AMERICA, INC.

Camshaft lobe height

: Refer to CAMSHAFT .

Measure the camshaft bearing journals (B) and (C) using a suitable tool (A). If the camshaft lobes or journals are out of specification, the camshaft and gear assembly must be replaced.

Courtesy of NISSAN NORTH AMERICA, INC.

Camshaft journal

: Refer to CAMSHAFT .

Install the front and rear camshaft caps and measure the camshaft bores (A). If the camshaft bores are out of specification, the cylinder head must be replaced.

Courtesy of NISSAN NORTH AMERICA, INC.

Camshaft bore

: Refer to CYLINDER HEAD .

Camshaft cap bolts

: 11 N.m (1.1 kg-m, 8 ft-lb)