Removal and installation the oil pump (Opel Corsa C)

1. On most engines considered in this Manual, the oil pump is driven directly by the crankshaft - the oil pump rotors are mounted on the shaft journal. If necessary, it is recommended to replace the leading and driven rotors together. Operations to check the condition and adjust the oil pump should be entrusted to service station specialists.

Engines Z10XE(P)/Z12XE/Z14XEP

2. Remove the oil pan (see Section 12) and remove the timing chain (see Section 8).

3. Remove the 6 bolts and oil pump cover, then remove the inner and outer rotors (see accompanying illustration).



4. Clean all mating surfaces before installation. Installation is performed in reverse order.

Engines Z14XE/Z16XE/Z18XE

Attention: On Z18XE engines, after removing the timing belt, it is necessary to hang up the power unit using the MKM-883 tool kit and remove the tools for removing the right engine support (see section 5).

5. Remove the timing belt tensioner and the left timing belt guide roller (see Section 8).

6. Remove the oil pan (see Section 12), unscrew the 3 mounting bolts and remove the oil intake (see accompanying illustration).



7. Remove the gear wheels (see Section 5) and the drive wheel of the toothed belt.

Note: To remove the wheel, it is necessary to block the flywheel from turning in the same way as when removing the crankshaft pulley (see Section 5). Unscrew the 2 mounting bolts and remove the rear timing belt cover (see accompanying illustration).

8. Disconnect the oil pressure sensor wiring connector, unscrew the 7 mounting bolts and remove the oil pump (see accompanying illustration). Using a suitable tool, carefully remove the front crankshaft oil seal so as not to damage the mounting surfaces.



9. Before installing the oil pump, clean all mating surfaces from any remaining sealant and pre-thread all holes.

10. Lubricate the surfaces of the new crankshaft oil seal with silicone grease (white color) insert it into the seat and press it in using a special tool (see accompanying illustration) on the crankshaft journal.





11. The installation of the remaining removed components is carried out in the reverse order of their removal.

Z16SE Engine

12. The oil pump of this engine is of the same design as on the Z14XE/Z16XE/Z18XE engines, and the order of this procedure is completely the same as described above for these engines. The differences concern only the appearance of some parts and their location, which is caused by the design features of the engine with the SOHC valve timing system.

Note: To install a new oil pump seal, use the KM-417 tool.

Z13DT Engine

13. The lubrication system of this engine is shown in the accompanying illustration - the oil pump is built into the timing cover.



14. To remove the pump, remove the timing belt cover (see Section 8), unscrew 2 bolts, separate the oil intake from the cover, remove the sealing gasket (see accompanying illustration), remove the oil pump cover and take out the outer and inner rotors.

Engines Y17DT(L)/Z17DTH

15. Remove the oil pan (see Section 12) and the timing belt (see Section 8).

16. Remove the oil pump gear, holding it from turning with a socket wrench (see accompanying illustration).



17. Using special devices (see accompanying illustrations) remove the timing drive pinion.

13.17a. Holding the drive wheel (1) from turning using the KM-662-C tool (2), unscrew the mounting bolt (3) (z17DTH engine)

13.17b. Removing the timing drive pinion (2) using the KM-161-B tool (z17DTH engine)

18. Unscrew the 9 mounting bolts and remove the oil pump housing (see accompanying illustration).

Note: The bolts are different lengths - remember the order in which they are placed! Then remove the oil pump rotors.

19. Using a suitable tool, carefully remove the crankshaft and oil pump seals so as not to damage the mounting surfaces (see accompanying illustration).



20. Clean all mating surfaces before installation. Apply sealant (black color) on the oil pump housing, replace the pump seal, insert the rotors, install the housing (see accompanying illustration) and tighten the mounting bolts to the required torque (see Specifications).

Attention: Tightening of the bolts must be completed no later than 10 minutes after applying the sealant!

21. Lubricate the surfaces of the new crankshaft and oil pump seals with silicone grease (white color) and using the KM-656 and KM-657 devices, install them into the mounting sockets - tap the seals until they stop (see accompanying illustrations). When installing the gear, pay attention to the position of the edge of the mounting hole.

13.21a. Device KM-656 (1) for installing the crankshaft oil seal

13.34b. Installing the oil pump gear (the arrows show the position of the edge of the mounting hole): 1. KM-657 device for installing the oil pump seal

22. The installation of the remaining removed components is carried out in the reverse order of their removal.