After the next oil change, a problem often arises: you need to return the oil pressure to the desired level. After this can be done, it is necessary to check the performance of the oil pump.
Instructions
Step 1
Remove the oil pump first. To do this, put the car on a lift or drive it into the inspection pit. Disconnect the wires from the battery and carefully drain the oil from the engine. Remove the nuts that secure the front engine mount to the cross member. Remove the engine crankcase and pump.
Step 2
Secure the oil pump and remove the bolts to then remove the oil pressure valve and inlet. After that, rinse all parts with gasoline, then blow with compressed air, carefully inspect the cover and pump housing for cracks, and if necessary, replace them.
Step 3
Using a set of feelers, check the clearances between the teeth of the gears, as well as between the walls of the pump housing. These distances should not exceed 0.25 mm. If the permissible values do not pass, replace the gear and pump housing. Inspect the oil strainer and oil pan.
Step 4
Measure the clearance between the plane of the body and the ends of the gears. Its value should not exceed 0.2 mm. Also, measure between the axis of the driven gear and the gear itself. Remember that in case of any deviations, it is necessary to replace the worn out parts.
Step 5
Carefully check the pressure relief valve for damage and various contamination, deposits that can lead to seizure. Pay attention to looking for corrosion. Also remove any nicks or burrs that would cause a decrease in system pressure. Check the elasticity of the spring of this valve and reassemble everything in the reverse order, first installing the shaft and gear in the pump housing, and then the housing cover.
Step 6
Lubricate all pump parts with engine oil to prolong their life. After assembly, rotate the drive roller by hand. The gear should rotate smoothly and effortlessly.
