Cylinder Head Warp Inspection

• Clean the cylinder head.
• Lay a straightedge across the lower surface of the cylinder head at several positions.
• Use a thickness gauge [A] to measure the space between the straightedge [B] and the head.

Cylinder Head Warp Standard: – – –

Service Limit: 0.05 mm (0.0020 in.)

• If the cylinder head is warped more than the service limit, replace it.
• If the cylinder head is warped less than the service limit, repair the head by rubbing the lower surface on emery paper secured to a surface plate (first No. 200, then No.

400).