A Guide on How to Remove and Install an Oil Pump including the Oil Pump Drive Gear
When deciding to remove and install the oil pump including the drive gear on your own, it is recommended that the oil pan is removed. If the oil pan is still in place, it might be difficult for you to put sealant on the oil pump sealing surfaces. Here's a guide on how to do it.
Difficulty level: Difficult
What you'll need:
- Jack stands
- Metric Socket set
- Metric wrench set
- Flange sealant
- Rubber gloves
Step 1: Prepare the tools and materials needed prior to the removal and installation. Wear your rubber gloves for protection.
Step 2: Carefully lift your vehicle using jack and support it using heavy-duty jack stands.
Step 3: You need to cautiously disconnect the battery positive lead.
Step 4: Set the engine at top dead center (TDC) on cylinder.
Step 5: Carefully remove the starter. Install the flywheel lock.
Step 6: You also need to remove the timing belt, rollers, balance shaft sprockets, balance aft belt, rear timing cover, and crankshaft gear.
Step 7: Do not forget to take away the crankshaft gear Woodruff key.
Step 8: Remove the oil pan from your vehicle if the oil pan is already loose. If not, then loosen and/or remove the oil pan retaining bolts.
Step 9: You need to slide the oil pump off the end of the crankshaft.
Step 10: You can now remove the oil pump drive gear from the oil pump. Make sure to check the oil pump drive gear. Replace the drive gear if a ridge is already visible.
Step 11: Take away the oil pump seal (main) from the oil pump housing.
Step 12: You may use flange sealant if you opt to disassemble and inspect the oil pump before reusing it. Just apply the sealant on the outer edge of the pump insert during assembly.
Step 14: Carefully install the new main seal to the oil pump housing.
Step 15: You can now install the new oil pump drive gear into the oil pump.
Step 16: Use the flange sealant on the sealing areas of the oil pump before installation on the block.
Step 17: In order for you to install the oil pump onto the block, you need to carefully slide it towards the end of the crankshaft.
Step 18: Place the mounting bolts. The M6 pump mounting bolts must be torques to 8 NM, and the M10 bolt to 45NM.
Step 19: Gently and carefully install the crankshaft gear Woodruff key into the recess on the crankshaft.
Step 20: Reinstall the balance shaf belt, timing belt, and all rollers.
Step 21:You also need to install the air filter assembly.
Step 22: Reconnect the battery.
Step 23: You must test the ability of your vehicle of withstanding lateral acceleration by installing a skid pan.
Step 24: Lower your vehicle by removing the jack stands.
Step 25: You're done. Make sure to dispose of the old components and dirts properly.
The entire process can take you about 1-2 hours. If you find it complex to do, we recommend you to let a professional mechanic do it for you.