Removal procedure
1. Remove the primary camshaft drive chain and crankshaft sprocket. See «Camshaft Drive Chain Components» in this section.
2. Remove three bolts (1) oil pump mounts (2).
3. Remove the oil pump assembly.
Disassembly
Attention!
There are no serviceable parts in the oil pump. The oil pump should be disassembled only when looking for the causes of malfunctions associated with the lubrication system. The disassembled oil pump cannot be reused and must be replaced.
The lower primary camshaft drive chain guide is not serviced separately and is an integral part of the oil pump assembly. If it is removed from the oil pump, then both the guide and the pump must be replaced.
1. Remove two bolts (1) lower rail mounting (2) camshaft primary drive chains and remove the guide.
2. Remove seven bolts (2) fixing the cover to the body (1) oil pump and remove the cover.
3. Remove inner gear (1).
4. Remove outer gear (2).
5. Remove retainer (1), holding the lid (2) reducing valve.
6. Remove cover, remove spring (3) and plunger (4) from the oil pump housing.
Clear
1. Clean the oil pump components with a non-corrosive solvent.
2. Dry the oil pump components with compressed air.
Inspection
1. Inspect the oil pump housing for damage.
2. Inspect the oil pump cover for damage.
3. Inspect the inner drive gear for damage. If damage is found on the inner surface, be sure to also inspect the crankshaft.
4. Inspect the outer driven gear for damage.
5. Inspect the oil pump relief valve components for dirt or damage.
6. Inspect the lower primary camshaft guide for damage. If the primary camshaft drive chain lower guide needs to be replaced, the oil pump assembly must be replaced as the lower guide is not serviced separately.
7. If there is dirt or damage inside the oil pump, then all engine components must be checked.
Assembly
Attention! The disassembled oil pump must be replaced because there are no serviceable parts inside the oil pump.
Installation procedure
1. Align the oil pump gear with the crankshaft flats and install the oil pump assembly to the cylinder block.
2. Align Pump Body (2) with mounting holes on the cylinder block.
3. install bolt (1) oil pump.
Tighten
Tighten the oil pump bolt to 23 Nm (17 lb-ft).
4. Install the primary camshaft drive chain. See «Camshaft Drive Chain Components» in this section.
