[mark511]

I have a RRS HSE 2007. within a week of installing my rock sliders from off roving.com i started hearing a grinding noise just after taking my foot off the gas pedal. the noise can be heard between 5-35mph but is loudest when my foot is taken off the gas pedal and the truck begins to slow down on its own.

i'm not sure if it had something to do with the rock slider install or if it was just coincidental. i will say that the truck was sluggish and felt heavy when driving and braking as if it was carrying more weight than it was used to or could handle. that feeling went away after the first week but then the grinding noise began. the noise sounds as if i installed aggressive tread pattern tires.

so i took the truck to the dealership and they said the noise was coming from the rear diff. well they replaced it but the noise was still there on their test drive so they then decided that the front diff was making the noise. i have no clue how they heard the noise in the back and all of a sudden it was actually coming from the front. anyway, they replaced the front diff on friday and monday i'm supposed to find out if the noise went away. the dealership also claims that somehow the diff fluids got contaminated and the rear diff gears were a little grinded up. i havent seen it yet so i cannot say if they're telling the truth or if they're trying to justify the fact that they chose to replace both diffs to land rover north america (it's all under warranty; thank god).

i have a feeling it's the transfer case but we'll see what happens on monday. has anyone had this problem or heard of it before? :doh:

 

[gooseyloosey]

Mark,
Welcome and I'm 99.9% sure nothing to do with rock slider install. Some thoughts.

Re: contamination, if I remember correctly, there was a TSB about incorrectly filled differential oil for a certain VIN range, can't remember if '07's were affected, but most were caught prior to leaving the dealer from what I remember.

In case replacing the other diff does not do the trick here's a few other ideas before pulling the transfer case:

1. A dragging brake shoe because the piston does not retract
2. A bad wheel bearing
3. The electronic parking brake not releasing fully

Since you are putting on rock sliders I assume you might be doing some offroading. Fyi, 1&2 show up more often if you are putting a vehicle through water, esp. if you are going seaside and running through any salt or brackish water.

 

[Leo]

At least you'll end up with 2 new diffs.....

 

[Drevs]

And the noise only happens upon deceleration?

 

[mark511]

gentlemen,

thank you for the replies. the dealership got back with me today and said that there was a service bulletin that came out about the diff oils being contaminated for my vin. i wonder why they didnt just check that in the first place. this event has led me to the conclusion that it's in my best interest to get a GTR webshop subscription. i will say that i've seen the bulletin for 2006 but didnt realize there was one for 2007. dovers, the noise is loudest upon deceleration but can be heard otherwise.

anyway, they finished stalling the front diff today but couldn't run a test drive because of a few bolts that could only be used one time and must be replaced if they're ever unscrewed (no idea what they're talking about but they had to overnight them to the dealership and will do the final install tomorrow). one would have figured that they would know what parts they would need prior to undertaking such a project. :think:

now i'm concerned about other stuff. if the oil in the diffs was contaminated and the diffs ended up with messed up gears wouldnt it then make sense that other stuff got messed up too?

thanks for the help.

 

[mark511]

ok. this is what i got off the gtr webshop and it looks like my vin starting with 7A would fall into this category:

Models
LM - New Range Rover
LA - Discovery 3
LS - Range Rover Sport

Title Front & Rear Differential Noise & Oil Leaks
Last Modified 03-MAR-2009 12:23
Category: Driveline
Symptom: 509000 Axle Concerns
Content: Front & Rear Differential Noise, Minor Oil Seal Leak & Debris in Oil.

Concern: Noise (Whine or humming) from the front or rear differential. A minor oil leak may be evident with possible debris in oil. Oil will be black in color.

Cause: The casing black paint /sealer degrades, detaches and contaminates the oil.
This results in the oil overheating which results in oil seal leaks and bearing noise.
Note: Differentials from the VINs quoted below are manufactured with a new casing paint which overcomes the above mentioned issues.

Please only raise an EPQR for differential issues which occur post the quoted VIN numbers:

Discovery 3 LR3 - LA8A459201
Range Rover Sport - LS8A141510
Range Rover. LM8A268394

 

[gooseyloosey]

now i'm concerned about other stuff. if the oil in the diffs was contaminated and the diffs ended up with messed up gears wouldnt it then make sense that other stuff got messed up too?

thanks for the help.

Good to hear you (hopefully) have this sorted out. If by "other stuff" you mean excessive wear in the transfer case, transmission, you are OK. The diffs take the beating for everything else--they always do. If you mean could the other oils be contaminated too? No, it was only a diff problem--wrong LS additive, if my memory is correct.

 

[mark511]

ok. picked up the truck today and everything was perfect. no more noise. both differentials were replaced and it was due to the service bulletin about the paint and oil contamination.

thanks for the gents.

 

[jjb218]

Hello amigos, where can i find the service bulletin please for the differentials, my VIN is SALLSAA346A963818 . 2006 RRS SC.
Thanks
JJB

 

[jjb218]

How much is each differential and where is the best place to buy them? Im out of warranty since I am located in the Dominican Republic.
Thanks
JJB

 

[Gazellio]

Hello amigos, where can i find the service bulletin please for the differentials, my VIN is SALLSAA346A963818 . 2006 RRS SC.
Thanks
JJB

This was never answered.

Does anybody know where to find the TSB/Service Bulletins for the 2006 Model VIN Numbers please?

 

[Gazellio]

Hello amigos, where can i find the service bulletin please for the differentials, my VIN is SALLSAA346A963818 . 2006 RRS SC.
Thanks
JJB

This post was never answered?

Does anybody know where to start looking for TSB or Service Bulletins for 2006 Model VIN Numbers please?

 

[umbertob]

There is no TSB. The above front/rear diff oil contamination issue was released as a Special Service Message, # SSM34304.

 

[Gazellio]

There is no TSB. The above front/rear diff oil contamination issue was released as a Special Service Message, # SSM34304.

Sorry to be Dumb but where do you find the latest TSB and SSM details?

 

[umbertob]

On the GTR site, but it's a pay-per-view deal... (you can register and browse the list of bulletins and messages for free, but to open up the documents and read the details you need a paid subscription): www.landrovertechinfo.com

Every now and the I subscribe for a week and download / save as many bulletins, pages from the Workshop Manuals, ets., as I can. :lol:

 

[Gazellio]

On the GTR site, but it's a pay-per-view deal... (you can register and browse the list of bulletins and messages for free, but to open up the documents and read the details you need a paid subscription): http://www.landrovertechinfo.com

Every now and the I subscribe for a week and download / save as many bulletins, pages from the Workshop Manuals, ets., as I can. :lol:

Many thanks for that. Maybe you should ask for small Forum member donations via paypal and then have a sticky thread constantly updated with all the latest bulletins!

 

[TripleE]

Every now and the I subscribe for a week and download / save as many bulletins, pages from the Workshop Manuals, ets., as I can. :lol:

Because you are the man!

Maybe you should ask for small Forum member donations via paypal and then have a sticky thread constantly updated with all the latest bulletins!

Motion to ban.

 

[Gazellio]

Every now and the I subscribe for a week and download / save as many bulletins, pages from the Workshop Manuals, ets., as I can. :lol:

Because you are the man!

Maybe you should ask for small Forum member donations via paypal and then have a sticky thread constantly updated with all the latest bulletins!

Motion to ban.

Oops better get back to MK111 Forum sharpish :hand:

 

[TripleE]

:lol:

 

[IMMensaMind]

Because you are the man!


Motion to ban.

Oops better get back to MK111 Forum sharpish :hand:

:lol:

Hahahahahahah :lol: