450 JD track loader manual versu HLR transmission

percheron · Post by **percheron** » Wed Feb 19, 2014 10:47 am

I am looking at buying a 450 JD track loader and would rather not buy any thing that a has a hydrostatic transmission been there done that with a international loader and that was a big mistake is the HLR tranny hydrostatic or is it some type of gear driven set up ? is the manaul more rugged or reliable than the HLR ?

Scottyb · Post by **Scottyb** » Wed Feb 19, 2014 1:18 pm

The transmission is gear driven however the reverser engages to drive the crawler. Both Transmission and reverser are in the same case on a 450, with the power first going through the reverser then the gear selection. the reverser operates with clutches that engage using hydraulic pressure and have multiple wet discs for reverse as well as forward. I have never had a problem with one ....yet anyway.
Scott

Tigerhaze · Post by **Tigerhaze** » Wed Feb 19, 2014 2:00 pm

If you go to the JD parts catalog online (it's free) you can see the major differences in parts between the constant mesh transmission ("manual") and the HLR transmission. The parts catalog specifically lists what parts are shared and which are different.

The bigger factor in your decision may be availability. I don't know the percentage of straight 450s produced that had constant mesh versus HLR, but I would imagine that ratio is pretty low- you might have a hard time finding one with a constant mesh transmission. Every straight 450 I have seen in person has the HLR, but that doesn't mean straight 450s with the constant mesh transmission aren't out there either.

percheron · Post by **percheron** » Wed Feb 19, 2014 2:31 pm

Thank you for clarifying that for me , it was a relief when I read both replies ! I just dont neeed any thing that requires a pump and torque converter to propel the machine so that was good news for me . Are there any down loadable ownwers mauals out there that any one knows of ?

jtrichard · Post by **jtrichard** » Wed Feb 19, 2014 3:31 pm

Tiger if the 450s are like the 2010s in the loader version they only came in HLR.... not available in consent mesh with loader

Perchron the HLR is a hydraulic clutch applied trans (there is a pump on the main input shaft in the trans) it runs just like a consent mesh if you go in to something and it bogs down it will either spin the tracks or kill the engine ..it has NO torque converter.... whats nice with the HLR is no clutch shifting from forward to reverse and from HIGH to LOW and vise-versa

percheron · Post by **percheron** » Wed Feb 19, 2014 4:22 pm

Thats pretty cool . and innovative so its pretty much another form of synchronization !

jtrichard · Post by **jtrichard** » Wed Feb 19, 2014 4:39 pm

syncro on steroids

scampr · Post by **scampr** » Wed Feb 19, 2014 7:35 pm

Just need to make sure its adjusted right so it doesnt slam back and forth from forward to reverse or the big headaches start..When i got mine i had to so a little adjusting and its very smooth now.

Tigerhaze · Post by **Tigerhaze** » Wed Feb 19, 2014 7:58 pm

You should also read what discussion threads you can on here about the HLR- they are pretty rugged but once they are worn out they are very pricey to repair. Many of the commercial users/former JD mechanics on here have mentioned that when they are really worn they seem OK when cold but start to slip when hot. You have to be careful when shopping for a crawler with HLR to try and test it out long enough to get it up to operating temperature and see if it slips.

percheron · Post by **percheron** » Wed Feb 19, 2014 8:48 pm

Thank you thats some good advise !

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450 JD track loader manual versu HLR transmission

450 JD track loader manual versu HLR transmission

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