Power Steering Gear and Pump Leaks
SYMPTOMSThe following symptoms indicate that the power steering system may be leaking:
- Power steering fluid leakage is on the floor.
- Power steering fluid leaks are visible on the power steering gear or the power steering pump.
- A growling noise is heard either during parking or while the engine is cold.
- Power steering is lost during parking.
- Steering effort is heavy.
INSPECTION PROCEDURE
Complete the following steps in order to inspect the power steering system for an external leak.
1. Wipe the suspected area dry.
2. Inspect the power steering reservoir for overfill.
3. Inspect the power steering system for the following conditions:
- Power steering fluid aeration
- An overflow
4. Inspect the following components:
- The hose connections
- The O-rings
5. Verify the exact point of the leakage. The point from which the power steering fluid is dripping is not necessarily the point where the system is leaking. In order to locate the seepage type leaks use the following method:
5.1. Turn the engine off.
5.2. Wipe the entire power steering system dry.
5.3. Inspect the pump reservoir fluid level. Add fluid as necessary.
5.4. Start the engine.
IMPORTANT: Do not hold the steering wheel at a stop for any length of time. Damage to the power steering pump may result.
5.5. Turn the steering wheel from stop to stop several times, with the aid of an assistant.
5.6. Perform the Rack and Pinion Leak Diagnosis in order to locate and repair the exact area of the leak.
6. Use the following procedure when service is required:
6.1. Clean the leakage area prior to the disassembly procedure.
6.2. Replace the leaking seal.
6.3. Inspect the component sealing surfaces for damage.
6.4. Tighten the bolts to specification.
6.5. Bleed the power steering system.
DIAGNOSTIC PROCEDURE
NOTICE: Refer to Fastener Notice in Service Precautions.
1. Install the power steering fitting.
- Tighten the power steering fitting to 27 Nm (20 ft. lbs.).
2. If the leakage persists, complete the following steps:
2.1. Replace the O-ring seal.
2.2. Repair the fitting nut or replace the line if the leakage is due to damaged threads.
2.3. Replace the housing if the housing threads are badly damaged.
3. Replace the following components:
- The dust seals
- The stub shaft seals
4. Perform a power steering gear replacement if a leak is observed between the following components:
- The torsion bar
- The stub shaft.
5. Perform a power steering gear replacement if a leak is observed at the drivers side and is not affected by the direction of the turn.
6. Perform a power steering gear replacement if a leak is observed at the housing end and spurts when bottomed in a left turn.
7. Perform a power steering gear replacement if a leak is observed at the passengers side.