Special Tools

J 37228 Seal Cutter

1. Drain the cooling system. Refer to Cooling System Draining and Filling.
2. Remove the crankshaft rear oil seal. Refer to Crankshaft Rear Oil Seal Replacement.
3. Remove the turbocharger oil return pipe nuts from the top of the flywheel housing.



4. Remove the upper oil pan. Refer to Upper Oil Pan Replacement.
5. Remove the oil filter.



6. Remove the flywheel housing bolts, denoted by the black circles.
7. Separate the flywheel from the cylinder block using J 37228 .
8. Remove the flywheel housing.



9. Remove the turbocharger oil return pipe gasket from the flywheel housing.
10. Remove the oil cooler adapter bolts.
11. Remove the oil cooler adapter and gaskets.
12. If required, clean and inspect the flywheel housing. Refer to Engine Flywheel Housing Cleaning and Inspection.

1. Install NEW O-ring seals to the flywheel housing, if necessary.



2. Apply a 2 mm (1/8 in) wide bead of sealant (3) GM P/N 97720043 (Canadian P/N 88901148), or equivalent to the flywheel housing sealing surfaces.



3. Install a NEW oil cooler adapter gasket.
4. Install a NEW oil cooler adapter to flywheel housing gasket.
5. Install the oil cooler adapter to the flywheel housing.

Caution: Refer to Fastener Caution in the Preface section.

6. Install the oil cooler adapter bolts.

Tighten
Tighten the bolts/nuts to 21 N·m (15 lb ft).





Note: The upper oil pan bolts are denoted by a black triangle. These bolts are torqued at 50 N·m (37 lb ft).

7. Install the flywheel housing bolts, denoted by the black circles.

Tighten
Tighten the bolts to 95 N·m (70 lb ft).




8. Install the oil filter.
9. Install the upper oil pan. Refer to Upper Oil Pan Replacement.



10. Install a NEW gasket to the turbocharger oil return pipe.
11. Install the turbocharger oil return pipe to flywheel housing nuts.

Tighten
Tighten the nuts to 21 N·m (15 lb ft).

12. Install the crankshaft rear oil seal. Refer to Crankshaft Rear Oil Seal Replacement.
13. Fill the cooling system. Refer to Cooling System Draining and Filling.