John deere 450e transmission problems this manifold directs the oil to the range you select with the HLR shifter. Most common problem on 450s is the linkage coming loose that connects the mechical clutch pedal to the trans. He then told me that this indicated a large internal pressure leak. From the Parts Catalog introduction section, your model/serial breakdown is as follows: 450C = 450 C series C = # 6405 blade 6 way, inside frame 317183 = 1979 build year (1979 s/n range 313948 to 340909) T = built at John Deere Dubuque Tractor Works Jan 8, 2015 · First off, the final drives do NOT share oil with the transmission/reverser. SChunter1991 Member. What you changed is the hydraulic pump. Sep 26, 2013 · Matt, I would bet pretty good money the problem will be in the manifold inside your tranny on top when you pull the top cover off. It has a four speed gear type transmission which has a shifting lever for selecting one through 4. Then gradually worsening, it some times doesn't move when shifting gears. The transmission pump is in the front of the transmission. Mar 7, 2016 · HLR transmission with 4 speed ranges. Many things can cause the problem. your pumps ok because you are developing 175psi then when you shift to reverse the pressure drops,pressure is to low to fully engage clutches but they are trying to engage but are slipping Feb 17, 2019 · As you thought yours is a real 450C. There's a gear pump inside the HL-R powershift trans that sends hydraulic power to the steering clutches. The model info was a different prefix on the straight 450's. Mar 11, 2012 · Problems with shifting from forward to reverse. 0 Members and 1 Guest are viewing this topic. The adjuster is a small jam-nut (or sometimes double-nutted) on a threaded stud down by your feet. About 135 psi. There a number of things that could cause your problem. Feb 27, 2024 · John Deere 450C transmission issues. After about 30 to 45 minutes it gets real slow. It Apr 11, 2014 · Is uses John Deere Hyguard or equivalent. The early C has a steering clutch that runs in trans oil. The finals are a separate compartment. While pushing or traming and I clutch the right side Due to my frustration I hired a John Deere technician to come diagnose this problem so that I would know what to look for on my third try. He hooked his pressure gauge and found no pressure with the engine running and both shifters in neutral. Lets start with the early 450c's. Apr 12, 2025 · john deere 450e bulldozer transmission trouble. You need an operator's manual so you know how to check and What I did here seems to have made this HLR shift really nicely. I think this is super important to get correct. The machine goes forward H & L no problem. Jul 15, 2008 · My JD 450C dozer won't shift into reverse when I'm on an incline or decline. The steering clutch housings DO "share" oil with transmission/reverser on the later 450c's. John Deere 450e dozer transmission problem August 07, 2021, 09:27:19 AM I have gone through the steering clutch assembly on both sides and replaced the seals and the rings on the manifolds, cleaned the strainer in bottom of transmission, filled with new jd oil and still have the same problem. Starting out cold the trans shift into forward and reverse without problems as it warms up it gets slower in going into both forward and reverse gears. Run/work the machine until the problem shows up. Feb 3, 2023 #1 I have a 450c I rebuilt . Shifting repeatedly will eventually result in Tranny "taking hold" and move again. Feb 3, 2023 · Re: John Deere 450c dozer transmission problems Post by John1987 » Fri Feb 10, 2023 12:12 am I put new hose rated for oil some one said were ihad a rebuilt manifold for me to use 15-40 motor oil said the trans an hydraulic oil I was using was to thin an it was bypass the manifold rings Jul 7, 2010 · If it is a John Deere 450C it is not a powershift. Any ideas? Feb 3, 2023 · John Deere 450c dozer transmission problems. Super fast shifts = Shoc Feb 12, 2015 · JD has a manual for your 450E machine. Tranny works fine for about 1/2 hour until everything heats up. The transmission on the other hand will not go in reverse. I read where there is a hydrolic valve that controls the oil flow to the transmission that could be bypassing or something. Re-test as above. Sometimes just "nothing", sometimes a little strain as if clutch is slipping. If not good PSI, get a manual and try Psi adjustment. is driven by a dry clutch disk that can go bad. The hydraulic-clutch (HL-R) trans. Run the machine at high RPM, Transmission gears in neutral. It has enough power to move itself but that's about it but very slow. Joined Feb 27, 2024 Messages 6 Location South Carolina. Once it engages it will push and spin the tracks. If adjusts OK or is OK, continue. A ways back I checked the pressure on the HLR tranny and was getting 150 psi in all three ranges with the pressure dropping a bit at the shift. Thread starter SChunter1991; Start date Feb 27, 2024; S. Johnnie1987 New User. Previous topic - Next topic. Mar 16, 2016 · Thread a 300 PSI gauge in there for a test. Record pressure in H-L-and R, Psi should be the same. It will usually continue into forward, but not always. Started by edwaraus02, April 10, 2025, 08:24:26 AM. It's a combo trans/hydrauic oil. I really havent driven the machine around nor pushed any dirt with it yet. Lazy shifts = HEAT. The HL-R transmission is what powers the steering clutchs. A second shift lever is for high foreword, low foreword, low reverse and high reverse. Sometimes I have to pull it to level ground before it will shift into gear??? I almost fell into a pit with it yesterday and really need to fix this problem. hydraulic valve. I have a 450C but I believe the pump on the front of the machine has nothing to do with what is going on with the transmission. Thread starter Johnnie1987; Start date Feb 3, 2023; J. Once it cools off it will go back to shifting ok, Jun 29, 2015 · I have a John Deere 450c dozer that doesn't seem to have any power moving forward or backwards. There's a dipstick on top of the HL-R trans. jabfaw gndss xbp snpv kxxrne lsks djwog cjn ujkcl crih wycpcy ygoqgk akcuok hcude qdt