Oil pump (Mazda BT-50 (1))

Removal and installation

1. Disconnect the cable from the negative terminal of the battery.

2. Drain the engine oil (see chapter "Maintenance and general check and adjustment procedures").

3. Remove the lower protection.

4. Remove the oil pan.

5. Remove the timing belt (see chapter "Engine. Mechanical part").

6. Remove the crankshaft pulley.

7. Remove the parts in the order they are numbered in the figure "Removing and installing the oil pump".

8. Installation of parts during assembly is carried out in the reverse order of removal.

9. Fill the required amount of engine oil into the lubrication system (see chapter "Maintenance and general check and adjustment procedures").

10. Start the engine and check for engine oil leaks.



Note on removing the fuel injection pump drive gear cover



(Based on website data: MAZBOOK.RU)

1. Using a special separator, cut off the sealant and remove the cover of the fuel injection pump drive gear mechanism.



2. Remove the fuel injection pump drive gear cover seal using a slotted screwdriver wrapped in a rag.



Note on installing the oil pump cover

Tighten the oil pump cover mounting bolts in several passes in the sequence shown in the figure.

• Tightening torque - 9-13 Nm

Note on installing oil pipe



Tighten the oil pipe mounting bolts in several passes in the sequence shown in the figure.



Note on installing the fuel injection pump drive gear cover

1. Apply a layer of engine oil to the lip of the oil seal.

2. Press in the seal of the fuel injection pump drive gear cover using a mandrel of suitable diameter and a hammer.

• Pressing depth: 0-0.4 mm

3. Apply silicone sealant to the contact surfaces of the fuel injection pump drive gear cover in the places indicated in the figure.

• Sealant thickness: 2-3 mm

4. Tighten the fuel injection pump drive gear cover mounting bolts in two or three passes in the sequence shown in the figure.

Examination

1. Check the oil pump housing and cover for damage and deformation.

2. Check the pressure reducing valve for damage and wear.

3. Check the pressure reducing valve spring for damage or deformation.

4. Using a feeler gauge, measure the radial clearance between the driven rotor and the pump casing, between the driving rotor and the pump casing.

• Nominal clearance - 0.10-0.19 mm
• Maximum gap - 0.20 mm

5. Using a precision ruler and feeler gauge, measure the end clearance between the rotors and the surface of the oil pump housing.

• Nominal clearance - 0.04-0.09 mm
• Maximum gap - 0.15 mm

If any of the clearances are greater than the maximum value, replace the rotor and/or oil pump housing.



6. Using a caliper, measure the free length of the pressure reducing valve spring. Replace the spring if necessary.

• Spring length - 43.8 mm