Oil Pump Removal and Installation

Introduction

Oil pump removal is best done with the oil pan removed. It can be done by loosening the oil pan bolts and dropping the pan enough to remove the pump, but applying sealant to the pump's sealing surfaces is difficult without the pan fully removed.

Tools

• Metric wrench set
• Metric socket set
• Ramps or jack stands and floor jack
• Loctite 574 sealant

Other Procedures Needed

• LUBE-06, Oil Pan Gasket Replacement
• ENG-13, Locating and Setting Engine to Top Dead Center (TDC), Cylinder 1
• ENG-03, Flywheel Lock Installation
• ENG-05, Camshaft and Balance Shaft Belt Removal
• ENG-06, Camshaft and Balance Shaft Belt Installation
• ENG-10, Camshaft and Balance Shaft Belt Tension — Checking and Adjusting
• AF-01, Air Filter Housing and Air Flow Sensor — Removal and Installation

Parts

Note: Before ordering, verify the part number stamped on your pump. Early-style oil pumps have been found on later cars — for example, a 1986 944 Turbo with a block manufactured in 1985 that carried the early pump.

Part No.	Description	Model	Year	Engine Code
944 107 114 09	Oil Pump	944	1982–1985	M44.02 to 43E 14858; M44.04 to 43E 21783
999 113 268 40	Main Seal (38 × 55 × 7)	944	1982–1985	M44.02 to 43E 14858; M44.04 to 43E 21783
944 107 161 01	Sleeve / Drive Gear	944	1982–1985	M44.02 to 43E 14858; M44.04 to 43E 21783
944 107 014 11	Oil Pump	944 / 944S / 944S2 / 944 Turbo / 968	1985–1995	M44.02 from 43E 14859; M44.04 from 43E 21784; M44.5–12; M44.40–44
944 107 014 11	Main Seal (38 × 52 × 7)	944 / 944S / 944S2 / 944 Turbo / 968	1985–1995	same as above
944 107 161 02	Sleeve / Drive Gear	944 / 944S / 944S2 / 944 Turbo / 968	1985–1995	same as above
900 174 049 40	Sleeve Seal (28 × 2.58)	All models	1982–1995	All

Procedure

1. Place the car on jack stands or ramps.

2. Disconnect the battery positive lead.

3. Using ENG-13, set the engine at TDC on cylinder number 1.

4. Using ENG-03, remove the starter and install the flywheel lock (P9206).

5. Using ENG-05, remove the balance shaft belt, timing belt, rollers, balance shaft sprockets, crankshaft gear, and rear timing cover.

6. Remove the crankshaft gear Woodruff key from the crankshaft.

7. If the oil pan is to be removed, refer to the applicable steps of LUBE-06 and remove the oil pan. Otherwise loosen/remove the oil pan retaining bolts as necessary to lower the front of the pan slightly.

8. Remove the oil pump retaining bolts and slide the oil pump off the end of the crankshaft.

9. Remove the oil pump drive gear from the pump. Inspect the drive gear closely — it will develop a ridge over time that prevents proper sealing with the crankshaft oil seal. If a ridge is evident, replace the drive gear.

10. Remove the main oil pump seal from the oil pump housing.

11. If the oil pump is to be disassembled for inspection prior to reuse, apply Loctite 574 to the outer edge of the pump insert during reassembly.

12. Install a new main seal in the oil pump housing and install the oil pump drive gear.

13. Apply Loctite 574 to the sealing surfaces of the oil pump prior to installation.

14. Install the oil pump onto the block by sliding it onto the end of the crankshaft and install the pump mounting bolts. Torque specs:

    • M6 pump mounting bolts: 8 Nm (6 ft-lbs)
    • M10 bolt: 45 Nm (33 ft-lbs)

15. Install the crankshaft gear Woodruff key into the recess on the crankshaft.

16. Using ENG-06, install the timing belt, balance shaft belt, and all rollers. Tension the belts as described in ENG-10.

17. Install the air filter assembly (AF-01).

18. Reconnect the battery.

19. Install the skid pan.

20. Remove the car from jack stands/ramps.