Inspection After Removal

WARNING: This page is about a different car, the 2019 Nissan NV3500 HD, 2019 Nissan NV2500 HD, and 2019 Nissan NV1500. However, it is still accessible from the selected car via links, so may be relevant.

Cylinder Head Bolts Outer Diameter

Cylinder head bolts are tightened by plastic zone tightening method. Whenever the size difference between "d1" and "d2" exceeds the limit, replace the bolt with a new one.

Courtesy of NISSAN NORTH AMERICA, INC.

Limit ("d1"-"d2")

: 0.11 mm (0.0043 in)

If reduction of outer diameter appears in a position other than "d2", use it as "d2" point.

Cylinder Head Distortion

NOTE: When performing this inspection, cylinder block distortion should be also checked. Refer to Inspection After Disassembly .

Using suitable tool wipe off oil, scale, gasket, sealant and carbon deposits from the cylinder head surface.
CAUTION: Do not allow gasket fragments to enter engine oil or engine coolant passages.
At each of several locations on bottom surface of cylinder head, measure the distortion in six directions.

Courtesy of NISSAN NORTH AMERICA, INC.

Limit

: 0.1 mm (0.004 in)
- Replace cylinder head if measured distortion exceeds the limit.