Oil Pump: Service and Repair

Oil Pump

Oil Pump:

Material:

Removal
1. With the engine in NEUTRAL, position it on a hoist.
2. Remove the engine front cover.
3. Drain the engine oil, then install the drain plug.
^ To install, tighten to 28 Nm (21 lb-ft).
4. Remove the 4 oil pan-to-bellhousing bolts.
5. Remove the 13 bolts and the oil pan.

6. NOTE: Discard the gasket and clean and inspect the gasket mating surfaces.

Remove the 2 bolts and the oil pump screen and pickup tube.
^ To install, tighten to 10 Nm (89 lb-in).
7. Remove the oil pump drive chain tensioner.
1. Release the tension on the tensioner spring.
2. Remove the 2 shoulder bolts and the tensioner.





8. Remove the chain from the oil pump sprocket.
9. Remove the bolt and oil pump sprocket.
10. Remove the 4 bolts and the oil pump.

Installation

1. NOTE: Clean the oil pump and cylinder block mating surfaces with metal surface cleaner.

Install the oil pump assembly. Tighten the 4 bolts in the sequence shown in 2 stages:
^ Stage 1: Tighten to 10 Nm (89 lb-in).
^ Stage 2: Tighten to 20 Nm (15 lb-ft).





2. Install the oil pump sprocket and bolt.
^ Tighten to 25 Nm (18 lb-ft).
3. Install the chain onto the oil pump sprocket.
4. Install the oil pump drive chain tensioner shoulder bolt.
^ Tighten to 10 Nm (89 lb-in).





5. Install the oil pump drive chain tensioner and bolt. Hook the tensioner spring around the shoulder bolt.
^ Tighten to 10 Nm (89 lb-in).





6. Install the oil pump screen and pickup tube and the 2 bolts.
^ Tighten to 10 Nm (89 lb-in).

7. CAUTION: Do not use metal scrapers, wire brushes, power abrasive discs or other abrasive means to clean the sealing surfaces. These tools cause scratches and gouges, which make leak paths. Use a plastic scraping tool to remove traces to sealant.

Clean all mating surfaces with metal surface cleaner.

8. NOTE: If the oil pan is not secured within 10 minutes of sealant application, the sealant must be removed and the sealing area cleaned with metal surface cleaner. Allow to dry until there is no sign of wetness, or 10 minutes, whichever is longer. Failure to follow this procedure can cause future oil leakage.

Apply a 2.5 mm (0.09 in) bead of sealant gasket and sealant to the oil pan.
^ Position the oil pan onto the engine and install the 2 rear oil pan bolts finger-tight.





9. Using a suitable straight edge, align the front surface of the oil pan flush with the front surface of the engine block.





10. Install the remaining oil pan bolts.
^ Tighten in the sequence shown to 25 Nm (18 lb-ft).





11. Install the 4 oil pan-to-bellhousing bolts.
^ Tighten to 48 Nm (35 lb-ft).
12. Install the engine front cover.
13. Fill the engine with clean engine oil.