2. Remove the split pin from the bypass valve body, cover, spring and piston (see illustration).
23.2 Oil pump. On the left - for a 4-cylinder engine, on the right - for a V6 engine. When replacing the oil pump rotors, indicate the engine number
3. Thoroughly clean all parts and inspect for wear or damage. Pump rotors must always be changed in pairs. Measure the clearances between the rotors and the pump wall. To do this, set the touch probe at the points «A» as noted (see illustration). The gap should not be more than 0.12 mm. Also measure the axial clearance of the rotors. To do this, place a steel ruler on the surface of the pump and measure the cuts with a feeler gauge «IN», as shown. The maximum allowable value in this case is 0.10 mm.
23.3 Measure the gap between the outer side of the rotors and the pump housing at the location «A». Check the axial clearance in place «IN»
4. Assemble the pump in reverse order. Lubricate all internal parts well.
Assemble the bypass valve using the drawing and install the safety pin.
5. Assembly and installation of the V6 engine oil pump requires a little more attention:
6. Insert a well-lubricated driven rotor into the pump port and install the pump cover. Tighten the cover bolts evenly so as not to pinch the rotors.
7. Remove the oil filter and use an oil can to inject some engine oil into the holes as shown in illustrations 3.173, for primary lubrication of the pump.
8. Put the chain on the crankshaft sprocket. Install the oil pump sprocket and tighten the bolts evenly after lubricating them.
9. Establish a cover of a drive of a cam-shaft together with a sealing lining.
10. Put the pulley on the crankshaft (the slot of the pulley must fit on the segment key) and tighten the nut to 180 Nm.
11. Tighten all drive belts.
12. Fill the engine with the specified oil.