Engine Oil Cooler Gasket Replacement

Engine Oil Cooler Gasket Replacement

Removal Procedure

1. Place a jack or utility stands at the rear of the vehicle.
2. If equipped, remove the engine protection shield. Refer to Engine Shield Replacement Engine Shield Replacement.
3. If equipped, remove the oil pan skid plate, if equipped. Refer to Oil Pan Skid Plate Replacement .




4. For both 1500 and 2500 series, support the front differential carrier with a suitable adjustable jack.
5. For 1500 series vehicles, remove the differential carrier right side nuts.




6. Remove the differential carrier left side bolts.
7. Lower the differential carrier.
8. For 2500 series vehicles, remove the differential carrier right side nuts.




9. Remove the differential carrier upper mounting bolt and nut.
10. Remove the differential carrier lower mounting bolt and nut.




11. If equipped with RPO L76 (6.0L) engine, perform the following:

1. Lower the differential carrier.
2. Remove the oil cooler hose adapter bolts (2).
3. Remove the oil cooler hose assembly and gasket. Discard the gasket.
4. Inspect the fittings, connectors, and cooler hoses for damage or distortion.




12. If equipped with RPO LY6 (6.0L) engine, perform the following:

1. Remove the oil cooler hose bracket bolt. (1)
2. Remove the oil cooler hose adapter bolts. (2)
3. Remove the oil cooler hose assembly. Discard the gasket.
4. Inspect the fittings, connectors, and cooler hoses for damage or distortion.

Installation Procedure





Caution: Refer to Fastener Caution Fastener Caution.

1. Install the oil cooler hose assembly and a NEW gasket.
2. Install the oil cooler hose adapter bolts (2) and tighten to 12 Nm (106 lb in).
3. Install the oil cooler hose bracket bolt and tighten to 25 Nm (18 lb ft).




4. For 2500 series vehicles, raise the differential carrier into position.
5. Install the differential carrier left side upper bolt and nut until snug.
6. Install the differential carrier left side lower bolt and nut until snug.
7. Install the differential carrier right side nuts and tighten to 100 Nm (74 lb ft).




8. For 1500 series vehicles, raise the differential carrier into position.
9. Install the differential carrier right side nuts.
10. Install the differential carrier left side bolts and tighten to 100 Nm (74 lb ft).
11. If equipped, install the engine protection shield. Refer to Engine Shield Replacement Engine Shield Replacement.
12. Remove the jack or utility stand from the rear of the vehicle.
13. Lower the vehicle.