Front Crankshaft Oil Seal Replacement

Tools

• Metric wrench set
• Metric socket set
• Jack stands or ramps and floor jack
• Porsche Timing Belt Tension tool (P9201)
• Flywheel Lock (P9206)
• Balance Shaft Pin Spanner (P9200) or equivalent
• Gear puller
• Seal puller

Parts

Part No.	Description	Model	Year	Engine Code
999 113 268 40	Seal — 38 × 55 × 7 mm	944	1982–1984	Up to 43 E 14858 (MT); Up to 43 E 21783 (AT)
999 113 331 50	Seal — 38 × 52 × 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 Shaft Sprocket Installation and Alignment Check
• ENG-10, Camshaft and Balance Shaft Belt Tension — Checking and Adjusting

Procedure

1. Disconnect the battery negative lead.
2. Raise the vehicle on jack stands or ramps.
3. Using ENG-05, remove the timing and balance shaft belts.
4. Remove the rear timing cover.
5. Remove the oil pump thrust washer, o-ring, and drive sleeve.
6. Inspect the drive gear closely. It develops a ridge over time that prevents proper sealing with the crankshaft oil seal. If a ridge is evident, replace the drive gear. Refer to LUBE-07 for drive sleeve (drive gear) part numbers.
7. Using a seal puller, remove the crankshaft oil seal.
8. Install the new seal into the oil pump housing.
9. Install the oil pump drive sleeve onto the crankshaft.
10. Install the o-ring and oil pump thrust washer onto the crankshaft.
11. Install the rear timing cover.
12. Using ENG-06, install the timing and balance shaft belts.
13. Lower the vehicle and connect the battery negative lead.