Symptoms
The 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.
- Inspect the power steering reservoir for overfill.
- 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.
- Wipe the suspected area dry.
- 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.
- Turn the steering wheel from stop to stop several times, with the aid
of an assistant.
- Inspect the suspected area of the power steering system for exact
location of the leak.
- Use the following procedure when service is required:
| 7.1. | Clean the leakage area prior to the disassembly procedure. |
| 7.2. | Replace the leaking seal. |
| 7.3. | Inspect the component sealing surfaces for damage. |
| 7.5. | Bleed the power steering system. |
Refer to
Power Steering System Bleeding
.
Diagnostic Procedure
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.
- Inspect the power
steering fittings for proper torque (1).
Tighten
Tighten the power steering fittings (1) to 27 N·m
(20 lb ft).
- 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. |
- Perform a power steering gear replacement if a leak is observed
between the following components:
