Terex TV1200

[Arduainefs]

Hi All
Hoping someone will be able to shed some light on this.

We bought a 2014 terex TV1200 roller recently from a dealer. Machine has done 700hrs and is in great condition, everything works as it should and very pleased with it.
However using it over the holidays I noticed that on a steeper incline when it looses grip it will spin but only on one roller…either front or back. I ran this past the dealer who subsequently spoke to terex who confirmed that this is normal?? Sure it should drive on both rollers regardless!

Thing is we have an older TV800 and it drives on both rollers….confirmed by lifting it. Lifting the 1200 only the rear roller drives, the front makes an attempt but soon stops rotating.
There is a lever to run the vibrate on either the front or rear rollers but nothing else.

Anyone have an opinion on this?

cheers

 

[V8Druid]

would it have a flow sharing valve between the rollers?

 

[Bri963]

If the motors are tee’d off a common feed/return the one with least resistance will spin. Going back over 30 years I was on a small Cat CB-think It was a 246? and it did what you describe. You could select front, rear, or both to vibrate.

 

[Arduainefs]

would it have a flow sharing valve between the rollers?

If you mean a flow control valve, I don’t think so , at least nothing obvious, unless it’s tucked away somewhere.
Will contact Terex directly and find out for sure. Just seems strange that the 800 drives both.

 

[Arduainefs]

If the motors are tee’d off a common feed/return the one with least resistance will spin. Going back over 30 years I was on a small Cat CB-think It was a 246? and it did what you describe. You could select front, rear, or both to vibrate.

That sounds like what is going on. I’ll have a closer look under the hood and floor pan when I get a chance

 

[Shovelhands]

From memory, the forward and reverse pipes come off the bottom of the pump and are tee’d. I don’t recall there being a valve.

 

[V8Druid]

If the motors are tee’d off a common feed/return the one with least resistance will spin. Going back over 30 years I was on a small Cat CB-think It was a 246? and it did what you describe. You could select front, rear, or both to vibrate.

That sounds like what is going on. I’ll have a closer look under the hood and floor pan when I get a chance

the issue with not having a flow share valve is, as said, the roller with least resistance will spin and you lose all drive .... both rollers need an equal amount of drive, much like a limited slip diff. in an axle or a mid diff between two driven axles