Crankshaft Rear Oil Seal Installation

Special Tools

• EN-658-1  Installer
• EN-235-6  Installer

For equivalent regional tools, refer to Special Tools .

1. Slide the crankshaft rear oil seal (2) across the EN-235-6  installer (1).
   Fig 1: Crankshaft Rear Oil Seal

   Courtesy of GENERAL MOTORS COMPANY
2. Install the crankshaft rear oil seal (1) with EN-235-6  installer (2) to the crankshaft.
   Fig 2: Crankshaft Rear Oil Seal And Installer

   Courtesy of GENERAL MOTORS COMPANY
3. Use EN-658-1  installer (2) to strike the crankshaft rear oil seal (1)
   Fig 3: Oil Seal Installer

   Courtesy of GENERAL MOTORS COMPANY
4. Check the crankshaft rear oil seal for proper seat, the EN-658-1  installer must be flush with the cylinder block at the position (1).
   Fig 4: Check Crankshaft Rear Oil Seal For Proper Seat

   Courtesy of GENERAL MOTORS COMPANY
5. Install the reluctor ring (2).
   Fig 5: Crankshaft Position Sensor Reluctor Ring And Oil Seal Housing

   Courtesy of GENERAL MOTORS COMPANY
6. Install the crankshaft rear oil seal housing (1).
7. Install the crankshaft position sensor (3) to the crankshaft rear oil seal housing (1).
   Fig 6: Crankshaft Position Sensor And Bolt

   Courtesy of GENERAL MOTORS COMPANY
8. Install the crankshaft position sensor bolt (2) and tighten to 4.5 N.m (40 lb in).
   CAUTION: Refer to Fastener Caution .