Hose Fittings, Pressure and Return

Seal Replacement

If a leak occurs between the tubing and the tube nut or is at o-ring (3Z728) , replace the hose assembly. If a leak occurs between the tube nut and the aluminum gear housing, replace the plastic washer. The following procedure should be used:

1. Remove the steering gear mounting bolts, and lower the steering gear (3504) to gain access to the fittings.

2. Check the fittings to determine which fitting is leaking and whether the leak is between the tube and tube nut or between tube nut and steering gear housing (3548) .

3. Check to make sure that the nuts are tightened to 27-34 Nm (20-25 lb-ft). Do not over-tighten.

4. Unscrew the tube nut, and inspect the plastic seal washer. Replace if required. To facilitate assembly of the new TFE seal, a tapered shaft such as Teflon Seal Installer D90P-3517-A2, A3 or equivalent may be required to stretch the washer, so it may be slipped over the tube nut threads.
   
   
   
   
   
   
   
   
   

   Item	Part Number	Description
   1	3Z728	O-Ring
   2	—	Pressure Hose Nut (Gold) (Part of 3A719)
   3	3A719	Power Steering Pressure Hose
   4	3A713	Power Steering Return Hose
   5A	—	Return Hose Nut (Silver) (Part of 3A713)
   6	—	Teflon Seal (Part of 3A713)
   7	—	Snap Ring (Part of 3A713/3A719)
   8	3548/3D654	Steering Gear Housing or Power Steering Pump Valve Outlet Fitting
   A		Tighten to 34-46 Nm (25-34 Lb-Ft)

5. Connect the tube nuts and tighten to 27-34 Nm (20-25 lb-ft). Install clip to retain the power steering pressure hose (3A719) and power steering return hose (3A713) to the power steering right turn pressure hose (3A717) .