What's up with the Slop in the Drivetrain? - Defender Source
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  #1  
Old February 7th, 2005, 02:28 PM
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What is up with the slop in the drive terrain?

Hello, my name is Tim Spencer from Michigan, I own a 1997 D-90, 49,000 mile. There seems to be a lot of "slop" in the driveterrain, especially upon slowing down, then speeding up. Is this normal?
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  #2  
Old February 7th, 2005, 03:26 PM
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sure. Rovers are known for having slack in thier transmissions. Perhaps you could check your u-joints etc.
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  #3  
Old February 7th, 2005, 03:58 PM
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In an effort to split out the thread, I think I killed the earlier post. Sorry gang.
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  #4  
Old February 7th, 2005, 04:22 PM
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I have the same issue with mine as well, and have never been able to track it down fully. It seems to be coming from the front, possibly the bellhousing area. New u-joints didn't solve it, considering front axle CV's. It may also be the shock absorbing springs (the coil springs in the disk, not the flower spring on the pressure plate) aren't strong enough and they are bottoming out?

-Hans
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  #5  
Old February 7th, 2005, 04:26 PM
arbik
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I read in the latest issue of LRW that some of the "noise" that is accredited to the driveline is caused by the triangle bushings being too old and rotted.

since I dont know anything about rovers..I'm just passing on the info I read in the magazine...
by the way...my 95 has that slop too.

-arbi
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  #6  
Old February 7th, 2005, 04:47 PM
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Hmmm, now I just have to figure out what Land Rover calls a "triangle" bushing so I can inspect it. But it does make sense, it might be a suspension bonk rather than a driveline bonk.

-Hans
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  #7  
Old February 7th, 2005, 05:47 PM
arbik
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Hans,

I"ll look it up tonight and post it.
-arbi
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  #8  
Old February 7th, 2005, 11:00 PM
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I got it bad. It is huge when in locked high with the front end unlocked. If I let off the gas fully in first after getting rolling it chuncks and pops and clanks. It is annoying. To me it feels like slop in the t-case. I remember others complaining about it so I just figured it was normal. All my u-joints are new, and I have new bushings. It might just be the truck.
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  #9  
Old February 8th, 2005, 12:39 AM
arbik
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ok,
just checked the magazine. Its the January Issue of LRW. Its the Rear Radius arm bushings they call "triangle" bush.

Hope this helps.

-arbi
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  #10  
Old February 8th, 2005, 07:36 AM
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I agree with Dave, The T-case is the biggest part of the problem. There is slop between the front and rear outputs. I have driven both i front only and rear only and the problem goes away with only 1 drive shaft. And it is not because they are old, when I replaced mine it did the same thing. Auto trannys don't have as much of a problem as they are a bit smother in operation, but if you drive it enough you will get better at not making it do it.
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  #11  
Old February 9th, 2005, 06:35 AM
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I think all Rovers have more slack in the drivetrain than most other vehicles, all the way from the input of the transmission to the drive flanges.
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  #12  
Old February 10th, 2005, 01:37 AM
arbik
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Guys,

Just got back from driving my buddy's "new to him" D90 SW. #451/500 1995 with the manual gearbox.
This truck has 72K miles on her, and there is NO slop in the driveline. NONE WHAT SO EVER.
Mine on the other hand, with 112K on it (same year and model) has TONS of slop.
How does that work out?

Obviously, they "all dont do that" as the dealer told me yesterday morning. So..its something.
I'm probalby going to redo the whole truck one piece at a time...but it'd help to know where this slop comes in most ...

Just an observation...

-arbi
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  #13  
Old February 10th, 2005, 09:49 AM
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Good luck getting rid of your slop. Although, if you are handy with setting up diffs, you can first take those apart and reduce the backlash as much as possible before they start making a bunch of whining noise and be sure to check the inner teeth that mesh with your axles for wear--you will undoubtably need to replace your axles since the splines probably have some wear, also check your hub splines for wear, your u-joints, your transfer case gears, your entire transmission. When you are done with that, check your suspension mounts. Or do in whatever order you want. When you are done with all this, and your back lash is at a reasonable level, I will bet you will have some whining going on that will make all this seem like it was not worth it.

I know you drove one without slop--and good for them!, but it is not factory spec. and I would say they are just the 1%'ers.
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  #14  
Old February 10th, 2005, 12:57 PM
arbik
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...looks like I need to learn to live with slop
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  #15  
Old February 10th, 2005, 01:13 PM
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It would be interesting to check out the "No Slop" truck. Out of maybe half a dozen transfer cases I've seen (which includes a freshly rebuilt one from Ashcroft and a relatively new one out of a Disco), all of them have had a lot of slop in them. Add to that everything else in the drivetrain everyone has already mentioned, and the overall drivetrain slop is fairly signficant even in a fresh build. It's kinda funny to say, but I wonder if there's something "wrong" with the "No Slop" truck.
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  #16  
Old February 10th, 2005, 05:01 PM
arbik
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Nothing that I could feel. Ran and drove like a champ.
He'll be at the RR5 in April for show and tell
As will my "slop galore" D90

-arbi
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  #17  
Old February 10th, 2005, 08:00 PM
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Real men have slop.
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  #18  
Old February 10th, 2005, 08:32 PM
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  #19  
Old February 10th, 2005, 09:45 PM
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Slop is fun. What else can you drive that offers such a challenge??

Locked in low range and crawling on a rocky trail, my 110 sometimes is like a damn bucking bronco!! Who needs a horse??? 8-0

DW
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  #20  
Old February 11th, 2005, 08:38 AM
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yeah when I am locked and moving at a snail pace over rocks etc I get worried about something being fubar'ed, makes noises that sometimes are un reassuring.
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