Locating Fluid Leaks Pump and Remote Reservoir

1. Turn off the engine.
2. Wipe the power steering system dry.



3. Check the fluid level in the reservoir. Adjust as necessary.

Notice: Do not hold the steering wheel against the stop. This may damage the pump.

4. Start the engine. Turn the steering wheel from stop to stop several times.



5. Check for leakage around the clamps of each of the hoses (6, 18). Tighten the clamp to stop the leakage.

Tighten
Tighten the clamp to 1.7 N·m (14 in).

6. Check for leakage around the hose fittings. Tighten the hose fitting.

Tighten
Tighten the hose fitting to 38 N·m (28 lb ft).




7. Check for leakage around the power steering pump stub shaft (18).
8. Remove the power steering pump. Refer to Power Steering Pump Replacement
9. Replace the pump if it was determined the leak originated from the drive shaft seal (19) area of the pump. The drive shaft should be clean and free of pitting in the seal area.
10. Replace the pump if it was determined the leak is originated from the pump O-ring seal (23) area of the pump.



11. Tighten or replace the remote reservoir clamp.
12. Make sure the power steering fluid is at the correct level. Ensure the cap is on tight. Check the cap for leakage.
13. Replace the cap if there is leakage.
14. Check the reservoir for cracks and bends.
15. Replace the reservoir and tighten or replace the clamp if you find cracks or bends.

Locating Fluid Leaks Steering Gear

1. Turn off the engine.
2. Wipe the power steering system dry.
3. Check the fluid level in the reservoir. Adjust as necessary.

Notice: Do not hold the steering wheel against the stop. This may damage the pump.

4. Start the engine. Turn the steering wheel from stop to stop several times.



5. Check for leakage around the adjuster nut (1). Tighten the nut if the leaking persists. If the leakage persists, replace the nut.

Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

6. Install the adjuster nut.

Tighten

•	Tighten the adjuster lock nut on the Model 708 steering gear to 49 N·m (36 lb ft).

•	Tighten the adjuster screw jam nut on the Model 710 steering gear to 90 N·m (66 lb ft).

7. If leakage is discovered by the steering gear side cover, tighten the side cover bolts.

Tighten

•	Tighten the cover bolts on the Model 708 steering gear to 60 N·m (44 lb ft).

•	Tighten the cover bolts on the Model 710 steering gear to 47 N·m (35 lb ft).




8. Check for leakage around the hose fittings.

Tighten

•	Tighten the gear inlet and outlet hose fittings to 33 N·m (24 lb ft).

•	Tighten the inlet and outlet hose fittings with new O-rings (Motorhome vehicle with the 6.5L and 7.4L engines with independent front suspension) to 30.5 N·m (23 lb ft).

•	Check for seepage between the torsion bar and stub shaft. If it exists, replace the rotary valve assembly.

•	Seat the ball in the housing with a blunt punch. Apply Loctite 75559 solvent and Loctite 290 adhesive, or equivalent, to the ball area.