Oil Jet Bolt Inspection

Make sure that a 0.6 mm (1/64 in) diameter drill will go through the oil intake (0.7 mm (0.028 in) diameter). Make sure the check ball (A) moves smoothly and has a stroke of about 4.0 mm (0.157 in).
Check the oil jet bolt operation with an air nozzle. It should take at least 120 kPa (1.2 kgf/cm² , 17 psi) to unseat the check ball.

Fig 1: Checking Oil Jet Bolt Operation

Courtesy of AMERICAN HONDA MOTOR CO., INC.