Oil Spray Jet: Testing and Inspection

Engine Oil Jet Bolt Inspection

12 mm oil jet bolt type

1. Remove the oil jet Service and Repair.

2. Inspect the oil jet bolt as follows.

- Make sure that a 1.1 mm (1/32 in) diameter drill bit will go through the oil intake (1.2 mm (0.047 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 operation with an air nozzle. It should take at least 310 kPa (3.2 kgf/cm2, 46 psi) to unseat the check ball.





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

8 mm oil jet bolt type

1. Remove the oil jet Service and Repair.

2. Inspect the oil jet bolt as follows.

- Make sure that a 1.1 mm (1/32 in) diameter drill bit will go through the nozzle hole (A) (1.2 mm (0.047 in) diameter).
- Insert the other end of a 0.9 mm (1/32 in) drill into the oil intake (1.0 mm (0.039 in) diameter). Make sure the check ball (B) moves smoothly and has a stroke of about 4.0 mm (0.157 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.





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