Oil Pan: Service and Repair
REMOVAL - 4X21. Drain the cooling system.
2. Remove the upper fan shroud.
3. Remove the throttle body resonator and air inlet hose.
4. Remove the intake manifold.
5. Raise vehicle on hoist.
6. Disconnect exhaust pipe at exhaust manifolds.
7. Remove the structural dust cover (Fig. 102) using sequence shown.
8. Drain engine oil and remove oil filter.
9. Position suitable jack under engine.
10. Remove both left and right side engine mount through bolts (Fig. 103).
11. Raise engine to provide clearance to remove oil pan.
12. Place blocks of wood between engine brackets and lower mounts to provide stability to engine.
NOTE: Do not pry on oil pan or oil pan gasket. Gasket is mounted to engine and does not come out with oil pan.
13. Remove the oil pan mounting bolts and oil pan (Fig. 104).
14. Unbolt oil pump pickup tube and remove tube and oil pan gasket from engine.
REMOVAL - 4X4
NOTE: 4X4 vehicles equipped with a 4.7L engine must have the front axle removed before the oil pan can be removed.
1. Remove the front axle from vehicle. Refer to TRANSMISSION AND DRIVETRAIN.
2. Remove the structural dust cover (Fig. 105) using sequence shown.
3. Drain the engine oil and remove oil filter.
NOTE: Do not pry on oil pan or oil pan gasket. Gasket is mounted to engine and does not come out with oil pan.
4. Remove the oil pan mounting bolts and oil pan (Fig. 106).
5. Unbolt oil pump pickup tube and remove tube and oil pan gasket from engine.
INSTALLATION - 4X2
1. Clean the oil pan gasket mating surface of the bedplate and oil pan.
2. Position the oil pan gasket and pickup tube with new O-ring. Install the mounting bolt and nuts. Tighten bolt and nuts to 28 Nm (20 ft. lbs.).
3. Position the oil pan and install the mounting bolts. Tighten the mounting bolts to 15 Nm (11 ft. lbs.) in the sequence shown (Fig. 104).
4. Raise the engine and remove the blocks of wood.
5. Lower engine and install both the left and right side engine mount through bolts (Fig. 103). Tighten the nuts to 68 Nm (50 ft. lbs.).
6. Remove jack and install oil filter.
7. Install structural dust cover.
8. Install exhaust pipe onto exhaust manifolds.
9. Lower vehicle.
10. Install intake manifold.
11. Install throttle body resonator and air inlet hose.
12. Install upper fan shroud.
13. Fill cooling system.
14. Fill engine oil.
15. Start engine and check for leaks.
INSTALLATION - 4X4
1. Clean the oil pan gasket mating surface of the bedplate and oil pan.
2. Position the oil pan gasket and pickup tube with new O-ring. Install the mounting bolt and nuts. Tighten bolt and nuts to 28 Nm (20 ft. lbs.).
3. Position the oil pan and install the mounting bolts. Tighten the mounting bolts to 15 Nm (11 ft. lbs.) in the sequence shown (Fig. 106).
4. Install structural dust cover.
5. Install oil filter.
6. Install front axle. Refer to TRANSMISSION AND DRIVETRAIN.
7. Lower vehicle.
8. Fill engine oil.
9. Start engine check for leaks.