Lubrication & Oil
Oil Pump Removal and Installation
This guide is preserved from Clark's Garage, a foundational 944 resource. View the original →
Tools you'll need
- P229 / 9201 Camshaft Holding Tool
- Porsche 9216 Timing Belt Locking Tool
- P238 Harmonic Balancer Holding Tool
- Porsche 9219 Balance Shaft Locking Tool
- Fluke 117 / Klein MM400 Digital Multimeter (4000+ count)
- Various Torque Wrench — 10–130 Nm
See the full tools list for where to buy each one and budget alternatives.
Torque specifications
Quick reference for the fasteners in this procedure — see the steps below for full context, and verify against your model year.
| Fastener | Size | Torque |
|---|---|---|
| Oil pump mounting bolts | M6 | 8 Nm (6 ft-lb) |
| Oil pump mounting bolt | M10 | 45 Nm (33 ft-lb) |
Introduction
Removing and installing the oil pump is best done with the oil pan removed. However, it can be done by loosening the bolts on the oil pan and dropping the pan enough to remove the pump. With the oil pan still in place, it is difficult to apply sealant to the oil pump sealing surfaces and ensure a good seal is established when the pump is installed. However, it can be done.
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
| Oil Pump Parts | ||||
| Part No. | Description | Model | Year | Engine Code |
| 944 107 114 09 | Oil Pump | 944 | 1982-1985 | M44.02 Thru 43E 14858 M44.04 Thru 43E 21783 |
| 999 113 268 40 | Main Seal (38 x 55 x 7) | 944 | 1982-1985 | M44.02 Thru 43E 14858 M44.04 Thru 43E 21783 |
| 944 107 161 01 | Sleeve / Drive Gear | 944 | 1982-1985 | M44.02 Thru 43E 14858 M44.04 Thru 43E 21783 |
| 944 107 014 11 | Oil Pump | 944 / 944S / 944 S2 / 944 Turbo / 968 | 1985-1995 | M44.02 43E 14859 Forward M44.04 43E 21784 Forward M44.5-12 M44.40-44 |
| 944 107 014 11 | Main Seal (38 x 52 x 7) | 944 / 944S / 944 S2 / 944 Turbo / 968 | 1985-1995 | M44.02 43E 14859 Forward M44.04 43E 21784 Forward M44.5-12 M44.40-44 |
| 944 107 161 02 | Sleeve / Drive Gear | 944 / 944S / 944 S2 / 944 Turbo / 968 | 1985-1995 | M44.02 43E 14859 Forward M44.04 43E 21784 Forward M44.5-12 M44.40-44 |
| 900 174 049 40 | Sleeve Seal (28 x 2.58) | 944 / 944S / 944 S2 / 944 Turbo / 968 | 1982-1995 | All |
* Before you replace your oil pump, verify the part number stamped on the pump. There is a possibility that you may have an early oil pump on one of the later cars. I have a 1986 944 Turbo which had an original engine whose block was manufactured in 1985 and had an early oil pump.
Procedure
- Place car on jack stands or ramps.
- Disconnect battery positive lead.
- Using ENG-13, set engine at TDC on cylinder number 1.
- Using ENG-03, remove the starter and install the flywheel lock (P9206).
- Using ENG-05, remove the balance shaft belt, timing belt, rollers, balance shaft sprockets, crankshaft gear, and rear timing cover.
- Remove the crankshaft gear Woodruff key from the crankshaft.
- If the oil pan is to be removed, refer to the applicable steps of LUBE-06 and remove the oil pan from the vehicle. Otherwise loosen/remove the oil pan retaining bolts as necessary to lower the front of the oil pan slightly.
- Remove the oil pump retaining bolts and slide the oil pump off the end of the crankshaft.
- Remove the oil pump drive gear from the pump. Inspect the drive gear closely. It will over time develop a ridge which will prevent proper sealing with the crankshaft oil seal. If a ridge is evident on the drive gear, it should be replaced.
- Remove the main oil pump seal from the oil pump housing.
- If the oil pump is to be disassembled for inspection prior to reusing, apply Loctite 574 to the outer edge of the pump insert during assembly.
- Install a new main seal in the oil pump housing and install the oil pump drive gear.
- Apply Loctite 574 to the sealing surfaces of the oil pump prior to installation on the block.
- Install the oil pump onto the block by sliding on to the end of the crankshaft and install the pump mounting bolts. Torque the M6 pump mounting bolts to 8 Nm (6 ft-lbs) and the M10 bolt to 45 Nm (33 ft-lbs).
- Install the crankshaft gear Woodruff key into the recess on the crankshaft.
- Using ENG-06 install the timing belt, balance shaft belt and all rollers. The belts are tensioned during the performance of ENG-06 using ENG-10.
- Install the air filter assembly (AF-01).
- Reconnect battery.
- Install skid pan.
- Remove car from jack stands/ramps.