ZDX V6-3.7L (2010)
Piston: Testing and Inspection
Block and Piston Inspection
1. Remove the pistons from the engine block See: Crankshaft/Service and Repair/Crankshaft and Piston Removal.
2. Check the pistons for distortion or cracks.
3. Measure the piston skirt diameter at a point 16.0 mm (0.630 in) from the bottom of the skirt.
4. Measure the wear and taper in direction X and Y at three levels in each cylinder as shown.
5. If the measurements in any cylinder are beyond the service limit or the cylinders are damaged, replace the engine block. The J37A5 engine block
can not be rebored.
Bore Taper
