Power Steering Bleeding: Service and Repair
1. Fill the reservoir up to the MAX mark.
NOTE: When filling or topping up the reservoir, ensure that the fluid is clean and not agitated prior to use. The fluid should be poured slowly into the reservoir to minimize the possibility of aeration.
2. Start the engine and slowly turn the steering wheel from lock to lock.
^ Examine the hose connections, steering gear bellows and valve body for external leaks.
NOTE: When bleeding the system ensure that the fluid in the reservoir does not fall below the minimum mark which will ensure that no air enters the system.
3. Switch off the engine and recheck the fluid level; fill up as required.
4. Check the system for leaks.
5. Connect a suitable stopper to the hand vacuum pump tube and insert into the reservoir filler neck.
6. Bleed the system.
^ Start the engine and slowly turn the steering wheel to the right, just off the stop.
^ Turn the engine off and apply 51 kPa (5 in. Hg) of vacuum pressure, using the vacuum pump, until the air is purged from the system (minimum of 5 minutes).
^ Depressurize the system at the vacuum pump.
^ Repeat the bleed operation turning the steering wheel to the left, just off the stop.
NOTE: When bleeding, the pressure will drop so keep adequate pressure maintained using the vacuum pump. If the pressure drops by more than 7 kPa (2 in. Hg) in 5 minutes the system should be checked for leaks.
7. Remove the vacuum pump and Stopper and fill up the reservoir if required.
8. If the noise level is still unacceptable, leave the vehicle standing overnight then repeat the bleed procedure.