Jaguar X-Type Sedan and Estate (Wagon). Manual — part 103
Published: 20-Jul-2011
Steering System - General Information -
Steering Linkage Specifications
Steering Linkage Free Play
Measurement (mm)
Measurement (in)
Free play (measured at the steering wheel rim)
0-6
0-0.24
Power Steering Pump Specifications
Item
Specification
Power steering pump relief pressure
106-114 bar
Lubricants, Fluids, Sealers and Adhesives
Item
Specification
Power steering fluid
Dexron 3
Published: 11-May-2011
Steering System - General Information - Steering System
Description and Operation
Item
Part Number
Description
1
—
Fluid cooler
2
—
Low pressure pipe - fluid cooler to reservoir
3
—
Fluid reservoir
4
—
Power steering pump
5
—
Heat shield
6
—
Extension shaft
7
—
Dash panel seal
8
—
High pressure pipe
9
—
Steering gear
10
—
Tie-rod end
11
—
Low pressure pipe - steering gear to fluid cooler
Vehicles with 2.0L or diesel engines
The power steering system is a rack and pinion design, with an engine-driven pump providing the steering assistance.
Vehicles with 2.5L or 3.0L engines
The power steering system is a rack and pinion design, with an engine-driven pump providing the steering assistance. The system features
variable steering assistance with vehicle speed and a variable ratio steering rack.
Absolute cleanliness must be observed when replenishing the fluid or dismantling any part of the system. New fluid from a sealed container
must be used.
• NOTE: If the steering gear, pump or cooler are being replaced for leakage or noise related issues and there is no evidence of fluid
contamination, there is no need to replace the reservoir.
In some cases where the fluid clearly contains particulate matter, and the system continues to function, flush the system with fresh fluid
and replace the reservoir, as there is the possibility that the reservoir internal filter may be damaged or faulty.
Published: 11-May-2011
Steering System - General Information - Steering System
Diagnosis and Testing
Inspection and Verification
1. Verify the customer concern by driving the vehicle.
1.
2. Visually inspect for obvious signs of mechanical or electrical damage.
2.
Mechanical Inspection Chart
Mechanical Checks
Incorrect tire pressure, loose wheel nuts, incorrect wheel alignment
Loose tie-rods
Loose damper and spring assemblies or ball joint
Loose steering column shaft universal joints
Loose pinch bolts on steering column shaft
Loose steering gear assembly
Check for external damage to the steering gear.
- Damaged tie-rods
-
CAUTION: If a steering gear assembly is returned under warranty with leaking seals, but there is also damage to the
steering gear boot/boots the steering gear warranty will be invalid. This is due to the steering gear seals being damaged due to
foreign materials entering the steering gear boot and damaging the steering gear seals thereafter.
Damaged steering gear boot
Damaged accessory drive belt
Binding or misaligned steering column, pump or steering gear
Incorrect fluid level
Hose leaks or line restrictions
Hose fouling bodywork
Electrical Inspection Chart
Electrical Checks/Tests
Make sure all connectors are in place (steering gear Servotronic solenoid and steering control module (SCM) - if applicable)
Make sure all the fuses are in place and not blown
DISCONNECT the steering gear transducer and the steering should become heavy
TEST electrical values:
- Power Supply to the SCM = 12 Volts
- Steering gear transducer resistance 7.0 to 7.5 Ohms is normal
(limits: less than 5 Ohms and greater than 9 Ohms would be declared
unacceptable)
- Steering gear transducer voltage = 6 Volts
- Steering gear transducer current = 840 mA at 0 mph reducing to 0 mA at maximum speed
RECONNECT all electrical items disturbed during testing
3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next
step.
3.
4. Check the power steering fluid condition. For additional information, REFER to Power Steering Fluid Condition Check in this section.
4.
5. If the concern is not visually evident, verify the symptom and REFER to Steering Fault Diagnosis by Symptom Charts in this
section.
5.
Steering Relay Harness Connector
Item
Description
1
Steering transducer ground
2
Ignition feed
3
Steering transducer feed
4
Ground
5
Speed sensor signal
6
Serial interface
Steering Linkage Inspection and Backlash (Freeplay) Check
CAUTION: Steering gear boots must be handled carefully to avoid damage. Use new clamps when installing steering gear boots.
Inspect the boots for cuts, deterioration, twisting or distortion. Check the steering gear boots to make sure they are tight. Install new boots
or clamps as necessary.
• NOTE: The following steps must be carried out with assistance.
1. With the wheels in the straight ahead position, gently turn the steering wheel to the left and the right to check for free play.
1.
2. Free play should be between 0 and 6 mm (0 and 0.24 in) at the steering wheel rim. If the free play exceeds this limit, either the
ball joints are worn, the lower steering column joints are worn or the backlash of the steering gear is excessive.
2.
CAUTION: DO NOT attempt to adjust the steering gear yoke. Failure to follow this instruction will result in the steering gear warranty
to become invalid.
3. The backlash of the steering gear cannot be adjusted, install a new steering gear. For additional information,
REFER to Section
211-02 Power Steering
.
3.
4. Grasp the steering wheel firmly and move it up and down and to the left and right without turning the wheel to check for column
bearing wear, steering wheel or steering column. For additional information,
REFER to Section
211-04 Steering Column
.
4.
Power Steering Fluid Condition Check
1. Run the engine for 2 minutes.
1.
2. Check the power steering fluid system level.
2.
3. Observe the color and the odor. The color under normal circumstances should be dark reddish, not brown or black.
3.
4. Allow the fluid to drip onto a facial tissue and examine the stain.
4.
5. If evidence of solid material is found, the power steering fluid system should be drained for further inspection.
5.
6. If fluid contamination or steering component failure is confirmed by the sediment in the power steering fluid system, REFER to
Steering Fault Diagnosis by Symptom Charts in this section.
6.
Power Steering Pressure Test
Test Equipment
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