Good morning,
I had my 2013 XF in for repair recently (replacing leaking water pump - with only 37K miles ?!) and I made mention of the supercharger knock. The repair manager said Jag had issued a bulletin about it and if owners complained, they would install an insulating blanket to help reduce the noise.

Has anyone heard of this or had the blanket installed? What are thoughts - good or bad? The noise doesn't really bother me and I'm concerned that an insulating blanket may cause the components to remain hot and potentially cause premature failure. Thanks for any feedback! (apologies to the Admin - I see that I may have posted this to the wrong XF site earlier)

 

Wow, that seems like quite a band aid of a fix. GM had the same issue with the super charger torsional dampener but fixed under warr. My supercharger was rebuilt with the solid dampener.

 

The TSB should really say " turn up radio volume"

 

Thanks - I agree its not really addressing the matter...

 

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Have not heard of that. See the above link. There is a YouTube also of someone with the Isolator on the way out.
I would not describe it as a knock thou.

And yes 37k miles and water pump and Isolator on the way out is not unheard of.
Have a google and search and see what comes up.

The attachment may be of some assistance, it worked for me.

 

Looked this up on topix. Hope this helps you.




SECTION: 303-12C

5.0L Supercharger Noise
AFFECTED VEHICLE RANGE:
XK Range (X150) Model Year:
2010-2014
VIN:
B32753 Onwards

F-TYPE (X152) Model Year:
2014 Onwards
VIN:
K00001 Onwards

XF (X250) Model Year:
2010-2014
VIN:
R47154 Onwards

XJ Range (X351) Model Year:
2010-2014
VIN:
V00001 Onwards


MARKETS:
All
CONDITION SUMMARY:
Situation:
A Customer may report a concern of a loud clattering/rattle/knocking type noise from the engine. Investigation reveals the noise is being emitted from the supercharger.
This version has been issued for a change to the Service Instruction and Parts Required.

Cause: The torsional isolator and or the torsional isolator spring support shaft are wearing causing excessive backlash in the supercharger drive.
Suggested Customer Concern Code N11.



Action: Should a customer express concern, follow the Service Instruction outlined below.



PARTS:
C2D38554
Supercharger Spring Isolator Kit (Denso As Required)
Quantity: 1
C2D38553
Supercharger Spring Isolator Kit (Bosch As Required)
Quantity: 1
AJ811576
Gasket - Right
Quantity: 1
AJ811590
Gasket - Left
Quantity: 1

WARRANTY:
Vehicle Model Model YearsVIN RangeC2D38554 (Denso)C2D38553 (Bosch)XJ (X351)2010 to 2013V00001 to V39426Yes-XJ (X351)2014 onwardsV39427 onwards-YesXF (X250)2010 to 2013R47154 to S61361Yes-XF (X250)2014 onwardsS61362-YesXK (X150)2010 onwardsB32753 onwardsYes-F-Type (X152)2014 onwardsK00001-YesNOTE: Repair procedures are under constant review, and therefore times are subject to change; those quoted here must be taken as guidance only. Always refer to TOPIx to obtain the latest repair time.
NOTE: DDW requires the use of causal part numbers. Labor only claims must show the causal part number with a quantity of zero.
DESCRIPTION
SRO
TIME (HOURS)
CONDITION CODE
CAUSAL PART
F-Type 5.0L SC
18.50.69
3.7
42
C2D38553
XK 5.0L SC
18.50.69
4.3
42
C2D38553
XF 5.0L SC (Up to VIN 2012S61361)
18.50.69
5.2
42
C2D38553
XF 5.0L SC (VIN 2013S61362 Onwards)
18.50.69
4.7
42
C2D38553
XJ 5.0L SC (Up to VIN 2012V39426)
18.50.69
5.2
42
C2D38553
XJ 5.0L SC (VIN 2013V39427 Onwards)
18.50.69
4.7
42
C2D38553
NOTE: Normal Warranty procedures apply.

SERVICE INSTRUCTION:
NOTE: See the table above for the part numbers that apply to affected vehicle lines.

1. Remove the supercharger drive belt (see TOPIx Workshop Manual Section 303-05 Supercharger Belt) and rotate the supercharger pulley by hand.
2. Use the supercharger spring isolator kit: When there is a clunk or knocking noise from the supercharger or if there is significant free play when turning the pulley before the rotors start to turn (see Workshop Manual, Section 303-12, Supercharger Spring Isolator).
3. Refer to the symptoms in items 1 to 3 below – if any of these are present install a new supercharger. This must be done as a separate Warranty Claim.
1. The pulley does not rotate freely – for example if it sticks, if it is difficult to move, or if roughness can be felt in the bearing during rotation.
2. The blades/rotors are damaged. Please be advised light rotor contact will result in a polished appearance this is normal and does not indicate damage to the rotors.
3. The customer reported an excessive whine noise from the supercharger.