I own a 444E Deere Loader, and I am having trouble with the hydrostatic transmission???? It seems to be running very

Expert's Assistant chatimg
Customer: I own a 444E John Deere Loader, and I am having trouble with the hydrostatic transmission???? It seems to be running very slow in road and work gear...it seems to have lots of power as it will spin the tires while pushing soils. Just wondering if there is any settings on the transmission?
Answered by Dave Stewart in 10 hours 14 years ago
Dave Stewart
35+ years of experience

500 satisfied customers

Specialities include: Auto Body Technician, Heavy Equipment Repairs, Diesel Engine Repairs, Brake and Transmission Repairs

Hi Joyce,does the machine seem to change speed at all no matter weather you select road or work? Thanks, Dave
It seems to go into gear but doesn't seem to be as fast as it should be
do you have a select option for steep grade/med grade or flat ground work
no, it has just high and low......rabbit or turtle????
LOL , OK let me do some more research and I'll get back to you ASAP. Thanks, Dave
How about the trans filters , ever been changed?
Have changed the sock type one, but the steel one i have just cleaned out...it is 800 bucks for a new one
Dang,@ 800.00 I'd clean it too! There should be a cartridge type also.give me a few min and i'll go back to my JD parts website and get some part # XXXXX you.
Can you get me a serial # XXXXX?


JD part # XXXXX is a cartridge filter for the trans. I have gone over the entire system and the are no adjustments for travel speed. That pretty well leaves filters and fluid.I would drain the trans and change out this 1 other filter and see weather it helps, it may be that with the age and wear on the machine, road speed will not get better no matter what you do short of a trans rebuild.

If you can spin the tires and have power in low there is nothing wrong with the guts of the hydrostatic system. And the way I am hearing you it is slow in both hi range and low range.? If when you shift to hi range the trouble starts then the problem is in the 2 speed transmission and the hi clutch is bad. From what I understand it is slow in both hi and lo.

The hydrostatic system is complicated in this application. When you push the foot throttle to wide open and are on level ground the system senses that there is little to no load and the control pressure regulating valve sends full oil to the hydrostatic pump swash plate control cylinders. The swash plate is then angled the most it can go, so it sends lots of oil the the hydrostatic motor which turns fast, so you go fast. Then when you ram into a pile of dirt the control system senses this load and pulls the swash plate back. This lets you keep your foot throttle tight to the board and gives you power to do something. On your machine this control system is messed up, it does not sense that there is no load so it does not angle the swash plate to wide open. Like I said in the beginning if there was damage to the hydrostats they would not be able to spin the tires. I would start with the control pressure regulating valve then the control pressure bypass valve then the pressure overriding valve. there must be something messed up in one of these.

In a bobcat they do not have this complicated system because the person running the levers is the sensing system. If you try to run wide open into a pile and do not pull the levers back you will kill the engine instantly.

Thanks John

if you need more help fire back.

If this gets you going please click accept
Good deal John,I like your answer thanks for picking this one up,Dave
Read less
Dave Stewart
500 satisfied customers
35+ years of experience
Dave Stewart
35+ years of experience

500 satisfied customers



Licensed mechanics

31,131 satisfied customers

Pearl avatar
Steve Pearl, Mechanic's Assistant
14 Mechanics are online right now.
Related Car Questions
I have a 185 john deere mower the hydro transmission will
Car Specialist
235 Satisfied Customers
machine and when i get the machine warmed..lever..pedel..slowing down
Field service technician
1,336 Satisfied Customers
John Deere tractor complete mechanical joystick bundle hose.
Car Specialist
457 Satisfied Customers
John deere..skid..loader..Drives forward just fine
Bobby Long
Car Specialist
208 Satisfied Customers
Have a clark 55c loader, 4cyl detroit, engine spools up to
Curtis B.
service manager
2,404 Satisfied Customers
How it works
logoAsk for help, 24/7
Ask for help, 24/7
Members enjoy round-the-clock access to 12,000+ verified Experts, including doctors, lawyers, tech support, mechanics, vets, home repair pros, more.
logoExpert will respond in minutes
Expert will respond in minutes
After you reach out, we match you with an Expert who specializes in your situation. Talk, text, chat, whichever you prefer.
logoSave time & money
Save time & money
No scheduling hassles, missing time from work, or expensive consults.
A JustAnswer membership can save you significant time and money each month.
Sarahesq and 87 other Automotive Mechanics are ready to help you.
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.
Last Updated: 12-20-22
Why you’ll love JustAnswer
JustAnswer is the best way to get expertise on-demand from doctors, lawyers, vets, mechanics and more. Since 2003, we’ve helped more than 9 million people in 196 countries and have an A+ rating with BBB and a 9.6/10 rating with TrustPilot.
Highly rated, verified Experts
We pride ourselves in our 8-step verification process including license and credential checks. Vetted by us and rated by customers, like you.
Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.
Web sites like justanswer.com/legal ...leave nothing to chance.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.

JustAnswerHomeAboutCareersPressPartner ProgramBlogCountries
MembersHow it worksLoginRegisterCategories
ExpertsMeet the ExpertsExpert qualityBecome an Expert
SupportHelp CenterContact Us

© 2003-2023 JustAnswer LLC. All rights reserved.

Privacy PolicyTerms of servicesContact usSitemap
DMCA.com Protection Status