Oil Spray Jet: Testing and Inspection

Engine Oil Jet Bolt Inspection

1. Remove the oil jet:
- 12 mm oil jet bolt Service and Repair

- 8 mm oil jet bolt Service and Repair

2. Inspect the oil jet bolt as follows.
- 12 mm oil jet bolt
- Make sure that a 1.1 mm (0.04 in.) diameter drill will go through the oil intake (1.2 mm (0.05 in.) diameter). Make sure the check ball (A) moves smoothly and has a stroke of about 4.0 mm (0.16 in.).

- Check the oil jet operation with an air nozzle. It should take at least 310 kPa (3.2 kgf/cm2, 46 psi) to unseat the check ball.

- 8 mm oil jet bolt
- Make sure that a 1.1 mm (0.04 in.) diameter drill will go through the nozzle hole (A) (1.2 mm (0.05 in.) diameter).

- Insert the other end of a 0.9 mm (0.04 in.) drill into the oil intake (1.0 mm (0.04 in.) diameter). Make sure the check ball (B) moves smoothly and has a stroke of approximately 4.0 mm (0.16 in.).

- Check the oil jet operation with an air nozzle. It should take at least 310 kPa (3.2 kgf/cm2, 46 psi) to unseat the check ball.

NOTE: Replace the oil jet assembly if the nozzle is damaged or bent.

3. Carefully install the oil jet. The mounting torque is critical.

12 mm oil jet bolt





8 mm oil jet bolt