2010 JAGUAR XFR power steering

With the control valve (7) OPEN and the engine idling, the following system pressures may be checked:

During turning when static (dry parking pressure).
When the steering is held on full lock (maximum system pressure or pressure relief).
With the steering at rest (idle pressure or back pressure).
CAUTIONS:


To avoid excessive heating of the power steering pump when checking the pressure, do not close the valve for more than
5 seconds maximum.


When checking the pump pressure DO NOT drive the vehicle with the test equipment installed.

With the control valve (7) CLOSED the power steering pump maximum output pressure can be checked.

Removing Test Equipment

To remove the test equipment:

Install a hose clamp on the reservoir to power steering pump hose.
Removing the test equipment is a reversal of the installation instructions.
Install a new 'O' ring seal (9) to the power steering pump high pressure outlet to hose connection.
Install the original hose to the power steering pump.
Remove the clamp from the reservoir to the power steering pump hose.
Top-up the reservoir fluid.
Bleed the power steering system.
REFER to: Power Steering System Bleeding (211-00 Steering System - General Information, General Procedures).
Description of Terms General Steering System Noises
Boom
Rhythmic sound like a drum roll or distant thunder. May cause pressure on the ear drum.

Buzz

Low-pitched sound, like a bee. Usually associated with vibrations.

Chatter

Rapidly repeating metallic sound.

Chuckle

Rapid noise that sounds like a stick against the spokes of a spinning bicycle wheel.

Chirp

High pitched rapidly repeating sound, like chirping birds.

Click

Light sound, like a ball point pen being clicked.

Click/Thump

Heavy metal-to-metal sound, like a hammer striking steel.

Grind

Abrasive sound, like a grinding wheel or sandpaper rubbing against wood.

Groan/Moan

Continuous, low-pitched humming sound.

Groan/Howl

Low, guttural sound, like an angry dog.

Hiss

Continuous sound like air escaping from a tire valve.

Hum

Continuous sound of varying frequencies, like a wire humming in the wind.

Knock

Heavy, loud repeating sound like a knock on a door.

Ping

Similar to knock, except at higher frequency.

Rattle

A sound suggesting looseness, such as marbles rolling around in a can.

Roar

Deep, long, prolonged sound like an animal, or winds and ocean waves.

Rumble

Low, heavy continuous sound like that made by wagons or thunder.

Scrape

Grating noise like one hard plastic part rubbing against another.

Squeak

High-pitched sound like rubbing a clean window.

Squeal

Continuous, high-pitched sound like running finger nails across a chalkboard.

Tap

Light, hammering sound like tapping pencil on edge of table. May be rhythmic or intermittent.

Whirr/Whine

High-pitched buzzing sound, like an electric motor or drill.

Whistle

Sharp, shrill sound, like wind passing a small opening.

Specific Steering System Noise Types
Belt Squeal
Belt squeal is a high frequency air-borne noise generated by slippage of the ribbed Vee belt on the power steering pump
pulley. Squeal increases with system loading and at full lock.

Clonk

Clonk is a structure-borne noise heard as a loose-sounding rattle or vibration coming from the steering column. Clonk can be
identified by driving and turning over cobblestones, rough roads, or high frequency bumps such as 25-50 mm tall tar strips.
Clonk requires a tie-rod load impact.

Column Knock

Column knock is a loose-sounding rattle or vibration generated by the steering column shaft contacting other portions of the
column assembly. The noise is both audible and tactile. Column knock is generated by driving over cobblestones or rough
pavement. It is not necessary to turn the steering wheel to create this noise.

Column Rattle

Column rattle is a metallic sounding noise created when applying a highly impulsive force to the steering wheel. Column rattle
is often used to combine the more general group of column noises including clonk and column knock. Column rattle noises can
be caused by clonk, knock, loose column components, bonus parts etc. A series of parked, straight-line driving, and cornering
tests should be carried out to isolate the source/sources.

Grinding/Scrape

Grinding is a low frequency noise in the column when the steering wheel is turned. It is generally caused by interference

between moving components such as the steering wheel to steering column shroud.

Grunt (Squawk/Whoop)

Grunt is a 'honking' sound elicited when coming off one of the steering stops. Grunt is generally excited during parking
manoeuvres with a low to medium speed steering input.

Hiss (Swish)

Hiss or Valve Hiss is a high-frequency sound coming from the steering gear when the system is loaded. It is a rushing or
'swish' noise that doesn't change frequency with RPM. Hiss is the general noise generated by the flow of hydraulic fluid through
restrictions in the steering system. Restrictions include the rotary steering valve, power steering tubes, connectors, tuning
orifices, etc. Hiss can be air-borne and structure-borne, but the structure-borne path through the steering intermediate shaft is
usually dominant.

Moan (Groan)

Moan is the general structure-borne noise of the steering system. Moan is primarily transmitted to the driver via the body
structure through the pump mount, engine mounts, power steering lines and power steering brackets. On some vehicles, moan
is a loud humming noise, often present when the wheel is turned and the system is loaded. It may change frequency with
engine RPM and if the system is loaded or unloaded.

Steering Gear Knock (Steering Gear Slap)


CAUTION: DO NOT attempt to adjust the steering gear yoke. Failure to follow this instruction will invalidate the steering
gear warranty.

Steering gear knock is a rattle sound and steering wheel vibration caused by separation of the steering gear and pinion while
driving over bumps. It is a structure-borne noise transmitted through the intermediate shaft and column. Steering gear knock
can also be heard as a 'thump' or impact noise that occurs with the vehicle stationary when the steering wheel is released
from a loaded position and allowed to return to rest. Noise occurs with the engine on or off.

Rattles

Rattles are noises caused by knocking or hitting of components in the steering system. Steering rattles can occur in the engine
compartment, the suspension, or the passenger compartment. Rattles can be caused by loose components, movable and
flexible components, and improper clearances.

Squeaks/Scrapes

Squeaks/Scrapes are noises due to friction or component rubbing anywhere in the steering system. Squeaks/Scrapes have
appeared in steering linkages and joints, in column components and in column and steering wheel trim.

Weep

Weep is an air-borne noise, occasionally generated when turning the steering across lock at a constant rate. When present on
a vehicle the noise, once initiated can often be maintained across a large proportion of the available steering movement.

Whistle

Whistle is similar to hiss but is louder and of a higher frequency. It is also more of a pure tone noise than hiss. Whistle is
air-borne and is generated by a high flow rate of hydraulic fluid through a small restriction.

Zip

Zip noise is the air-borne noise generated by power steering pump cavitation when power steering fluid does not flow freely
through the suction hose from the reservoir to the pump. Zip primarily occurs during cold weather at start-up.

Steering System Vibrations and Harshness
Buzz
Buzz is a tactile rotary vibration felt in the steering wheel when steering inputs are slow. Buzz can also be called a grinding
feel and it is closely related to grunt and is caused by high system gain with low damping. Buzz is generally excited during
parking manoeuvres with low to medium speed steering input.

Buzz (Electrical)

A different steering buzz can be caused by pulse width modulated (PWM) electric actuators used in variable assist steering
systems. This buzz is felt by turning the ignition key to run without starting the engine and holding onto the steering wheel.
In extreme cases, the buzz can be felt with the engine running also.

Column/Steering Wheel Shake

Column shake is a low frequency vertical vibration excited by primary engine vibrations.

Nibble (Shimmy)

Published: 07-Jul-2011
Steering System - General Information - Power Steering System Bleeding
General Procedures


NOTE: Some variation in the illustrations may occur, but the essential information is always correct.

1. Clean power steering fluid reservoir around the filler cap and fluid
indicator.
Check the power steering fluid, if aerated, wait until fluid is free
from bubbles then top-up reservoir to UPPER level mark with
recommended fluid.


2. CAUTION: Fluid must always be present in the reservoir
during bleeding.
Remove the filler cap and fill to the MAX level mark.
Install the reservoir filler cap.









3. Start the engine and allow to run for 10 seconds, stop the engine.
Check the power steering fluid, if aerated, wait until fluid is free
from bubbles then top-up reservoir to UPPER level mark with
recommended fluid.


4. CAUTION: Do not hold steering on full lock for longer than 10
seconds.
Start the engine and turn steering fully lock to lock, stop the engine.
Check and top-up power steering fluid level.

5. Start and run the engine for 2 minutes, turn the steering fully lock to
lock.
Check and top-up power steering fluid level. www.JagDocs.com

Published: 11-May-2011
Steering System - General Information - Power Steering System Flushing
General Procedures
NOTES:

If heavy steering or contamination within the power steering system is found, it is necessary to carry out the system
flush procedure as detailed below. If any components have been replaced in the power steering system the procedure below
must be carried out in full.


Some variation in the illustrations may occur, but the essential information is always correct.

1. Remove the power steering fluid reservoir cap.

2. Using a suitable syringe, remove the power steering fluid from the power
steering fluid reservoir.


3. CAUTION: Be prepared to collect escaping fluids.


NOTE: Note the orientation of the clip.

Detach the power steering fluid reservoir.
Detach but do not remove the power steering fluid
reservoir.
Release the power steering fluid return hose from
the power steering fluid reservoir.
If a quick release coupling is fitted to the power
steering return hose, release the power steering
fluid return hose from the coupling by removing the
clip.




4. CAUTION: Be prepared to collect escaping fluids.

NOTE: Make sure that all openings are sealed. Use
new blanking caps.

Using a suitable blanking cap, cap the power steering
reservoir return pipe.

5. CAUTION: Be prepared to collect escaping fluids.


NOTE: Make sure the extended pipe is not kinked or
twisted and is correctly secured with hose clips.

Attach a suitable pipe to the power steering return hose to
allow the fluid to drain.









6. NOTES:


The suitable funnel should have the a capacity of 4
litres and O-ring seal


The suitable funnel must be tightly sealed to the
power steering fluid reservoir to avoid fluid leakage.

Install a suitable funnel onto the power steering fluid
reservoir.












7. WARNING: Do not work on or under a vehicle supported only by a jack.
Always support the vehicle on safety stands.
Raise and support the vehicle with the wheels just clear of the ground.

8. CAUTIONS:


Steps 8 and 9 must be carried out within 2 - 3 seconds of each
other. Failure to follow this instruction may result in damage to the
power steering system.


Be prepared to collect escaping fluids.

Using the suitable funnel, top up the power steering system with the
specified fluid. Make sure the fluid level is maintained at two thirds full
in the funnel.

9. CAUTIONS:


Be prepared to collect escaping fluids.


Do not allow the power steering fluid level in the
power steering fluid reservoir to fall below the minimum
power steering fluid level. Failure to follow this instruction
may result in damage to the power steering system.


Make sure the engine is switched off as soon as the
full 4 litres of power steering fluid has entered the power
steering fluid reservoir.
Flush the power steering system.
Start the engine
With assistance turn the steering slowly lock to lock
3 times at approximately 1 revolution every 5
seconds.
Continue to flush the power steering system until 4
litres of power steering fluid has been added to the
power steering reservoir. This should take
approximately 30 seconds.


10.

























11. CAUTION: Be prepared to collect escaping fluids.
Remove the suitable funnel.























CAUTION: Be prepared to collect escaping fluids.

Remove the suitable pipe to the power steering return
hose.












12.
CAUTION: Be prepared to collect escaping fluids.

NOTE: Note the orientation of the clip.

If a quick release coupling is fitted to the power steering return hose,
connect the power steering fluid return hose to the coupling by installing
the clip.

13. Install a new power steering fluid reservoir. For additional information,
refer to: (211-02 Power Steering)
Power Steering Fluid Reservoir - V6 3.0L Petrol (Removal and Installation),
Power Steering Fluid Reservoir - TDV6 3.0L Diesel (Removal and Installation).