Service Procedure

Service Procedure

Power Steering Gear Inlet Pipe/Hose Inspection/Replacement (LF1)

Special Tools

CH-50623 Gauge Tool

This procedure includes an inspection to gauge check the diameter of the hose mid crimp body. Over crimping (an undersized crimp diameter) may have damaged the structure of the hose.

Because the crimp can be tapered (smaller diameter at one end) and oblong in shape, the gauge check must be performed at four locations around the diameter at each end of the crimped section.

Note
An undersized crimp at just one of the eight positions is considered an unacceptable crimp

1. Remove the intake manifold cover.





2. Remove the power steering gear inlet pipe/hose upper retaining bolt.





3. Remove the tie strap (1) and slide the mesh sleeve down the hose to expose the mid crimp.





Position #1





Position #2





Position #3





Position #4





4. Use CH-50623 to check the crimp diameter at all 4 crimp diameter pairs at each end (identified with arrows in the above illustration) of the crimped section. Attempt to slide the CH-50623 over the crimp at 4 different locations, working your way around the crimp for a total of 8 checks (4 checks at each end).

Note
Some undersized (unacceptable) crimp diameters near the gauge size may require the tool to be wiggled slightly for it to slide over the crimp. Use feel, not excessive force to perform this step.

Note
The crimp diameter check must be performed on the surfaces between the crimp ridges.

Note
The illustration below shows the inspection being done on the crimp with the power steering gear inlet pipe/hose out of the vehicle for demonstration purposes only. The procedure should be done with the power steering gear inlet pipe/hose in the vehicle.

A - Unacceptable Crimp, B - Acceptable Crimp





1. If the CH-50623 will not slide over and bottom out against the crimp at any of the locations, the crimp checks good (is within specifications) and no further action is required (portion B of the above illustration). Slide the mesh sleeve back into its original position under the retaining clamp. If the mesh is frayed, it may be necessary to wrap it with tape to slide it under the clamp. Reinstall the retaining bolt and tighten to 9Nm (80 lb in). Reinstall the intake manifold cover.
2. If the CH-50623 slides over and bottoms out against the crimp at any one of the 4 crimp diameter pairs (portion A of the above illustration), the power steering gear inlet pipe/hose must be replaced. Proceed to Step 5.

5. Place a drain pan under the vehicle.
6. Remove as much power steering fluid from the reservoir as possible.
7. Install the engine support fixture.
8. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in SI.
9. Remove the front tire and wheel assemblies.





10. Remove the rear transmission mount through bolt (1).
11. Use mechanics wire in order to suspend the steering gear from the powertrain.
12. Remove the steering gear fasteners.
13. Disconnect the lower electronic suspension front vertical accelerometer link, if equipped.
14. Use a jack in order to support the rear of the drivetrain and front suspension frame.
15. Remove the reinforcement bolts.
16. Remove the rear frame-to-body bolts.
17. Lower the rear of the frame in order to access the hose on the steering gear.
18. Remove the power steering gear inlet pipe/hose lower retaining bolt.
19. Disconnect the power steering gear inlet pipe/hose from the steering gear.
20. Disconnect the power steering gear inlet pipe/hose from the power steering pump.
21. Remove the power steering gear inlet pipe/hose from the vehicle.
22. Position the power steering gear inlet pipe/hose in the vehicle.
23. Connect the power steering gear inlet pipe/hose to the power steering pump. Tighten the fitting to 34 Nm(25 lb ft).
24. Connect the power steering gear inlet pipe/hose to the steering gear. Tighten the fitting to 34 Nm(25 lb ft).
25. Install the power steering gear inlet pipe/hose lower retaining bolt. Tighten the bolt to 9 Nm (80 lb in).
26. Raise the rear of the frame.
27. Install the rear frame-to-body bolts. Tighten the bolts to 100 Nm (74 lb ft) plus 90 degrees.
28. Install the reinforcement bolts. Tighten the bolts to 45 Nm (33 lb ft) plus 30 degrees.
29. Remove jack from the rear of the drivetrain and front suspension frame.
30. Remove the mechanics wire from the steering gear.
31. Install the steering gear fasteners. Tighten the bolts to 60 Nm (44 lb ft) plus 120 degrees.
32. Install the rear transmission mount through bolt. Tighten the bolt to 100 Nm (74 lb ft).
33. Connect the lower electronic suspension front vertical accelerometer link, if equipped.
34. Install the front tire and wheel assemblies.
35. Lower the vehicle.
36. Remove the engine support fixture.
37. Install the power steering gear inlet pipe/hose upper retaining bolt. Tighten the bolt to 9 Nm (80 lb in).
38. Install the intake manifold cover.
39. Fill and bleed the power steering system. Refer to Power Steering System Bleeding in SI.
40. Clean any excess power steering fluid from the vehicle.
41. Remove the drain pan.

Power Steering Gear Inlet Pipe/Hose Replacement (LAU)
1. Place a drain pan under the vehicle.
2. Remove as much power steering fluid from the reservoir as possible.
3. Install the engine support fixture.
4. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in SI.
5. Remove the front tire and wheel assemblies.





6. Remove the rear transmission mount through bolt (1).
7. Use mechanics wire in order to suspend the steering gear from the powertrain.
8. Remove the steering gear fasteners.
9. Disconnect the lower electronic suspension front vertical accelerometer link, if equipped.
10. Use a jack in order to support the rear of the drivetrain and front suspension frame.
11. Remove the reinforcement bolts.
12. Remove the rear frame-to-body bolts.
13. Lower the rear of the frame in order to access the hose on the steering gear.
14. Disconnect the power steering gear inlet pipe/hose from the steering gear.
15. Disconnect the power steering gear inlet pipe/hose from the power steering pump.
16. Remove the power steering gear inlet pipe/hose from the vehicle.
17. Position the power steering gear inlet pipe/hose in the vehicle.
18. Connect the power steering gear inlet pipe/hose to the power steering pump. Tighten the fitting to 34 Nm(25 lb ft).
19. Connect the power steering gear inlet pipe/hose to the steering gear. Tighten the fitting to 34 Nm (25 lb ft).
20. Raise the rear of the frame.
21. Install the rear frame-to-body bolts. Tighten the bolts to 100 Nm (74 lb ft) plus 90 degrees.
22. Install the reinforcement bolts. Tighten the bolts to 45 Nm (33 lb ft) plus 30 degrees.
23. Remove the jack from the rear of the drivetrain and front suspension frame.
24. Remove the mechanics wire from the steering gear.
25. Install the steering gear fasteners. Tighten the bolts to 60 Nm (44 lb ft) plus 120 degrees.
26. Install the rear transmission mount through bolt. Tighten the bolt to 100 Nm(74 lb ft).
27. Connect the lower electronic suspension front vertical accelerometer link, if equipped.
28. Install the front tire and wheel assemblies.
29. Lower the vehicle.
30. Remove the engine support fixture.
31. Fill and bleed the power steering system. Refer to Power Steering System Bleeding in SI.
32. Clean any excess power steering fluid from the vehicle.
33. Remove the drain pan.