Power Steering Line/Hose: Service and Repair

CORRECTING NOISE FROM COOLING LOOP


NOTE: The fluid cooling loop can cause noise due to pressure pulses in the power steering system. The noise can be eliminated by replacing the banjo fitting on the steering gear with a new, softer, return line 720 mm (28.35 inch) in length and a new banjo fitting. The hose should be installed as a loop between the steering gear banjo fitting and cooling loop and be secured by a tie strap as described below.





1. Replacement of return line and banjo fitting:
a. Clamp the return line using hose pliers between the cooling loop and the power steering fluid reservoir.
b. Raise the car.
c. Remove splash guard under engine.
d. Position a container under the steering gear.
e. Remove the return line from the steering gear (lower arrow in illustration) and the cooling loop.





2. Installation of new return line:
a. Take out the banjo fitting, P/N 3530775-0.
b. Take out the 720 mm (28.35 inch) long return line, P/N 980477-4.
c. Install the line on the banjo fitting using clamp, P/N 943470-5.
d. Install the return line and banjo fitting with the banjo fitting screw and 2 new aluminum washers on the steering gear, see arrow in illustration. Use new aluminum washers! (P/N 9157596-9).
e. Tighten return pipe pipe screws in the steering gear to 50 Nm (36.9 ft. lbs.).

NOTE: Use new aluminum washers! Torque tightening to 50 Nm (36.9 ft. lbs.) covers only return pipe pipe screws!

f. Remove the cooling loop from the clip by the horn and the screw by the anti-roll bar mounting.
g. Locate the hose in a loop as shown along the front side member and connect using clamp, P/N 9433705, on the cooling loop.
h. Reinstall the cooling loop.
i. Wipe off any fluid spillage.





j. Use tie strap clamp the new hose to the cable conduit and the hose between the power steering fluid reservoir and the cooling loop (see illustration).
k. A tie strap must also be used around the hose where it crosses in the loop (see illustration).

NOTE: Check that the new hose does not chafe against the engine mounting.

3. Top up the power steering system with oil
a. Lower the car.
b. Remove hose clamp.
c. Fill with hydraulic fluid. Transmission oil grade: ATF oil type F. G. Dexron II D, E, III, Ford Mercon or Volvos synthetic ATF oil, P/N 1161317-1. Synthetic oil can be mixed with normal ATF but the cold weather properties are greatly reduced. When changing to synthetic oil the system should be completely emptied of oil.





d. Turn steering wheel from lock to lock several times. Top up fluid if required.
4. Bleed the power steering system. Check oil level during bleeding:
a. Turn steering wheel from lock to lock several times. Top up fluid if required.
b. Set the parking brake.
c. Start engine.
d. Turn steering wheel slowly to the right, hold on full lock for 10 seconds.
e. Turn steering wheel slowly to the left, hold on full lock for 10 seconds.
f. Repeat points d and e 20 times. Move car after the operation has been carried out 10 times to avoid damage to the tires.
g. Fill the reservoir with fluid if required.
5. Check for leaks in the power steering system
a. Raise the car.
b. Check for leaks at the steering gear and the line connections.
c. Reinstall splash guard under the engine.
d. Lower the car.