Chevy 305 Engine Oil Pump Replacement Repair Guide

Difficulty

Moderate

Steps

Time Required

                          1 - 2 hours

Sections

Oil pump
3 steps

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Introduction

The oil pump serves the purpose of generating the oil pressure needed in order to circulate oil through the car. Without a properly performing oil pump you will not have a successful running engine.

What you need

Step 1

              Oil pump

Remove the 18 bolts holding the oil pan in place using the 3⁄8 and 1⁄2 sockets, 6 inch extension and 3⁄8 ratchet.
Fourteen 3/8 bolts around the perimeter and four 1/2 bolts on each corner
Lift the oil pan up and forward so the oil pump pick up will clear the baffle.
Do not remove the oil pan gasket yet.

Remove the 18 bolts holding the oil pan in place using the 3⁄8 and 1⁄2 sockets, 6 inch extension and 3⁄8 ratchet.

Fourteen 3/8 bolts around the perimeter and four 1/2 bolts on each corner

Lift the oil pan up and forward so the oil pump pick up will clear the baffle.

Do not remove the oil pan gasket yet.

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Step 2

Remove the single 9/16 bolt holding the oil pump in place.
Using a rubber mallet to break loose, gently tap on the side of the base of the pump indicated by the arrow. DO NOT HIT THE TOP OF THE PICK UP TUBE AND SCREEN. This can potentially damage the pick up tube or screen.

Remove the single 9/16 bolt holding the oil pump in place.

Using a rubber mallet to break loose, gently tap on the side of the base of the pump indicated by the arrow. DO NOT HIT THE TOP OF THE PICK UP TUBE AND SCREEN. This can potentially damage the pick up tube or screen.

Step 3

Pull straight up from the base of the oil pump to remove.
Replace with a new oil pump.

Pull straight up from the base of the oil pump to remove.

Replace with a new oil pump.

To reassemble your device, follow these instructions in reverse order. Torque oil pump bolt to 60-70ft.-lbs. Torque oil pan bolts to 12ft.-lbs.

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Author

                                      with 3 other contributors

                    Joey Barton

Member since: 10/30/2019

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Team

                       University of Memphis, Team S4-G3, Kim Fall 2019                        

                                                  Member of University of Memphis, Team S4-G3, Kim Fall 2019 



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Introduction

What you need

Team