Hello everyone, I purchased my 2006 LR3 over a month ago. Changed the fluids, transmission, oil, differential oils. My hubs are good no play in them but I do have a loud hum and I am worried that it is my rear differential. I hear that the LR3's are notorious to have these failed due to a coating that Land Rover added in the inside of the differential. My question is that I am good with my hands and do have an extensive amount of tools. How hard is to remove and install a rear differential? Any help is greatly appreciated.

 

Pretty sure the issue was with the front diff, not rear. And its not an huge issue really, in fact over the years you are the second mention of it I have seen. 100% certain not the hubs, you check all four wheel bearing with wheels off the ground? Do is come and go when turning corners at speed at all? What happens when you hear it and drop into neutral?

 

Thanks for your response. When I put it in neutral, it still sounds the same. A big whinning sound. I changed the rear differential fluid and I have to do the front, is this worth doing the fluid change or just replace the front differential? TIA

 

Of course change the fluid. If putting into neutral does not change the sound or eliminate, I tend to not think differential as the load on it will have substantially changed. They generally make noise under load only.

 

I will do the oil change for the front, so it might be the tranny? I would hate to think that.

 

You (or the garage) for sure follow the fill procedure for the transmission? Easily to have a bad fluid level as it's a tricky and specific process

 

If it's like the BMW ZF6 you do an initial fill, row through the gears a few times with tires off ground, bring the trans to a specific temp range, and then top it off within that temp range while it's running. Helps to have a way to monitor trans temp. I imagine since they're nearly the same trans the procedure is similar.

They also like a very specific ZF6 fluid.

 

Yes , I have the Gap tool and monitored the temp. The biggest PITA was the transmission sleeve. Took a lot of force to get that in but all done.