Lubrication & Oil
Front Crankshaft Oil Seal Replacement
CG
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)
See the full tools list for where to buy each one and budget alternatives.
Tools
- Metric Wrench Set
- Metric Socket Set
- Jack stands or ramps
- Floor Jack
- Porsche Timing Belt Tension tool (P9201)
- Flywheel Lock (P9206)
- Balance Shaft Pin Spanner (P9200) or equivalent
- Gear puller
- Seal Puller
Parts
| PARTS | ||||
| Part No. | Description | Model | Year | Engine Code |
| 999 113 268 40 | Seal 38 x 55 x 7 mm | 944 | 1982 - 1984 | Up to 43 E 14858 (MT) Up to 43 E 21783 (AT) |
| 999 113 331 50 | Seal 38 x 52 x 7 mm | 944 | 1984 - 1991 | From 43 E 14859 (MT) From 43 E 21784 (AT) |
| 999 707 283 40 | O-Ring | 944 | 1982 - 1991 | ALL |
Other Procedures Needed
- ENG-05, Camshaft and Balance Shaft Belt Removal
- ENG-03, Flywheel Lock Installation
- ENG-13, Locating and Setting Engine to Top Dead Center (TDC), Cylinder 1
- AF-01, Air Filter Housing and Air Flow Sensor - Removal and Installation
- IGN-01, Distributor Cap and Rotor Replacement
- ENG-06, Camshaft and Balance Shaft Belt Installation
- ENG-08, Balance Shafts Sprocket Installation and Alignment Check
- ENG-10, Camshaft and Balance Shaft Belt Tension - Checking and Adjusting
Procedure
- Disconnect the battery negative lead.
- Raise the vehicle on jack stands or ramps.
- Using ENG-05, remove the timing and balance shaft belts.
- Remove the rear timing cover.
- Remove the oil pump thrust washer, o-ring, and drive sleeve.
- 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. Refer to LUBE-07 for drive sleeve (drive gear) part numbers.
- Using a seal puller, remove the crankshaft oil seal.
- Install a the new seal into the oil pump housing.
- Install the oil pump drive sleeve on to the crankshaft.
- Install the o-ring and oil pump thrust washer on to the crankshaft.
- Install the rear timing cover.
- Using ENG-06. install the timing and balance shaft belts.
- Lower vehicle and connect battery negative lead.