Construction and Road Equipment

Construction and road equipment repair questions? Ask a mechanic ASAP

Connect one-on-one with {0} who will answer your question

I have a jd 450h dozer it will go ahead and back but wont…

Customer Question
I have...

I have a jd 450h dozer it will go ahead and back but wont steer

Mechanic's Assistant: What is the complete model and serial number of your machine?

2003 john deere 450h serial# *****

Mechanic's Assistant: Are you fixing this yourself? What have you tried so far?

It just happened goes ahead and back but wont steer

Mechanic's Assistant: Is there anything else the Equipment Mechanic should know before I connect you? Rest assured that they'll be able to help you.

No just wondering what would cause this

Submitted: 1 year ago.Category: Construction and Road Equipment
Show More
Show Less
Ask Your Own Construction and Road Equipment Question
Answered in 2 days by:
5/25/2021
Mechanic: Dan, Technician replied 1 year ago
Dan
Dan, Technician
Category: Construction and Road Equipment
Satisfied Customers: 14,865
Experience: 17+ yrs. shop and field experience with all major brands of heavy equipment and trucks - 1995 WyoTech graduate.
Verified

Hi, My name is***** will be glad to try to help. We can follow up as needed on here. Professionals are not employees of the site but users of the site and help on here as time allows depending on their daily schedule. Sorry to hear you're having these troubles with this machine steering. The first thing you want to do is check all your fuses and relays but also make sure that your battery and charging system all check out to be functioning within its rated capacity. Check to see if there are any fault codes logged that might be related to your drive motor speed sensor circuit or wiring, or even a possible calibration related problem with the transmission TCU software. This way those fault codes can be identified and investigated individually. Try to perform a TCU recalibration using the procedure below to see if it is successful without kicking it out related to fault codes.

Remove the cover from the transmission TCU which when you are sitting in the seat it is on your left side in the rear.

1 Warm up machine till transmission oil is at least 100 degrees f

2 Make a reference mark next to throttle lever is at 1500 RPMs you will need this during the cal.

3Turn Key Off

4Press and hold decelerator pedal down

Hold CAL button down on TCU and start engine

5Release CAL after engine starts your software number and machine model number will appear after this a P will appear indicating your park lever is in the up locked position

Your Check Service Code Light Will Begin Flashing

6If your sofware number was 600 4E will be flashing on your monitor display wait for it to stop flashing if your software is not 600 disregard this step

7Lower park lever the monitor will flash 4E wait for the 4E to stop flashing

The lever and pedals must be moved slowly trough there entire travel holding at detent or stop until monitor changes

8With engine speed control at low idle remove your foot from the decelerator slowly move the engine speed control to fast idle and hold there till 4E goes out, return throttle lever to low idle.

9The monitor will now display 267

10Press your speed control up then down the 7 will go out

11The monitor will display 26 Slowly move steer lever to the right until the detent is felt do not move past the detent into counter rotate then do the exact same thing to the left the 6 will go out

12Now just a 2 will be on the monitor move throttle control lever to the mark you made at 1500 RPM now slowly move the forward reverse lever fully forward past the detent to the mechanical stop.

13Now the monitor will display 2Lr after 15-70 seconds the left track will move aqnd stop the L will go out next in the same amount time the right track will move and the r will go out

14 Do not move lever until the return FNR to neutral light starts flashing

15When the FNR light starts flashing move the lever to nuetral

16 Move engine speed control to low idle

17 If FrFr are displayed the calibration was good if not repeat calibration

For this part of the calibration you will need alot of room the tractor will will need to travel both forward and reverse at high speed with out turning I would say you will need 200feet both directions if you have a ripper you can lift it off the ground and do this test or securly block the machine up in the air if you don't have lots of room

18Move speed lever to full throttle

19 Press hold the speed control switch up for 5 seconds to ensure max speed is set

20Hold down decelerator pedal move lever to forward slowly release the declerator both of the F's will go out when each track reaches maximum speed depress the decelerator move lever to neutral

21Move the lever to revers and slowly release the decelerator both of the r" will go out when maximum speed is reached

22Depress the decelerator and shift to neutral move engine speed control to neutral

23Press CAL on the TCU once if 1111 shows Calibration was GOOD if not repeat

I hope you find this information helpful. Reply back with the results of these checks and fault code history if any further help is needed. It is a pleasure to help anyway I can.

Ask Your Own Construction and Road Equipment Question
Was this answer helpful?

How JustAnswer works

step-image
Describe your issueThe assistant will guide you
step-image
Chat 1:1 with a mechanicLicensed Experts are available 24/7
step-image
100% satisfaction guaranteeGet all the answers you need
Ask Dan Your Own Question
Dan
Dan
Dan, Technician
Category: Construction and Road Equipment
Satisfied Customers: 14,865
14,865 Satisfied Customers
Experience: 17+ yrs. shop and field experience with all major brands of heavy equipment and trucks - 1995 WyoTech graduate.

Dan is online now

Related Construction and Road Equipment Questions
I have a 2000 deere 550h with trans code F3M4. When i drive
Hi, i have a 2000 John deere 550h with trans code F3M4. When i drive straight it pull slowly on left side. … read more
Dan
Dan
Technician
Auto Mechanics 1&2/diesel mech
14,865 satisfied customers
What year is my JD450 dozer. Serial number5F3M019752T.
What year is my JD450 dozer. Serial number5F3M019752T … read more
james Roberts
james Roberts
Maintenance assistant
Vocational, Technical or Trade School
3 satisfied customers
I'm changing the clutch packs on a jd 550 dozer. I have
I'm changing the clutch packs on a jd 550 dozer. I have pulled the motor, torque converter housing, the front plate of the transmission and all the components inside the transmission except the one ba… read more
Dan
Dan
Technician
Auto Mechanics 1&2/diesel mech
14,865 satisfied customers
I have a 450h Deere dozer and I keep blowing the Hyd hose
I have a 450h John Deere dozer and I keep blowing the Hyd hose that operates the 6 way blade . It has happened 4 times in the last week ,and has never giving me problems before , have any ideas ? … read more
Curtis B.
Curtis B.
Technician
Associate Degree
2,324 satisfied customers
We are working on an old Deere 450, having trouble setting
Hello. We are working on an old John Deere 450, having trouble setting up the steering clutch finger height. We have the service manual, but we cannot find the JD 264 special tool to do it … read more
Keiphun Sowell
Keiphun Sowell
Owner Brothers Restoration/Troubleshoot
AutoDiesel Technology
2,767 satisfied customers
I just recently purchased a Deere 450h and was wondering if
I just recently purchased a John Deere 450h and was wondering if someone on here could decode the serial number for me and maybe answer some questions.… read more
Dan
Dan
Technician
Auto Mechanics 1&2/diesel mech
14,865 satisfied customers
What does the code F372 mean on a 2002 John Deere 450H
what does the code F372 mean on a 2002 John Deere 450H crawler dozer … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
1,298 satisfied customers
We have a 1981 deere 850D with VIN 365030T and have some
Good morning, we have a 1981 John deere 850D with VIN 365030T and have some problems we can not figure out. the machine runs, just that it pulls to one side while driving, sometimes it pulls so much t… read more
Dan
Dan
Technician
Auto Mechanics 1&2/diesel mech
14,865 satisfied customers
I have a 2002 JD 850c Dozer and the left track is braking in
I have a 2002 JD 850c Dozer and the left track is braking in forward causing it to turn but works fine in reverse. What could it be? … read more
Jeremy
Jeremy
Diesel Diagnostic Technician / Expert
Associate Degree
1,511 satisfied customers
I have a 1999 Deere 450H s/n TO450HX884881 which I'm trying
I have a 1999 John Deere 450H s/n TO450HX884881 which I'm trying to calibrate a NEW Transmission Control Unit, can you give me complete instruction to do so? … read more
Dan
Dan
Technician
Auto Mechanics 1&2/diesel mech
14,865 satisfied customers
I have a 450H Deere dozer serial number HX901175. I need to
I have a 450H John Deere dozer serial number HX901175. I need to calibrate the speed sensors to the tcu . I seen an article from Dan for a 550H but it doesn't seem the same. Do you have the calibratio… read more
Dan
Dan
Technician
Auto Mechanics 1&2/diesel mech
14,865 satisfied customers
I have a Deere 450h dozer that won't start. Tested the
Tested the solenoid. It Is getting power from the battery but nothing from the ignition. … read more
Dan
Dan
Technician
Auto Mechanics 1&2/diesel mech
14,865 satisfied customers
Do you clear the codes on the transmission of the 450h the
Hello Dan do you clear the codes on the transmission of the 450h the same way as you do the 550h john deere dozer I read your answer on the 550 and I have a 450 with the same issue? Thanks Ed… read more
Dan
Dan
Technician
Auto Mechanics 1&2/diesel mech
14,865 satisfied customers
I have a 450h Deere dozer. I was operating dozer and dozer
Hello, I have a 450h John Deere dozer. I was operating dozer and dozer was running great. During the time I was running dozer I had put it in reverse to back up and dozer died on me. Dozer will not st… read more
Dan
Dan
Technician
Auto Mechanics 1&2/diesel mech
14,865 satisfied customers
I have john deere 650j dozer 2006 electronic throttle control
I have john deere 650j dozer 2006 electronic throttle control knob,when i push pedal down it dosnt idle down,i changed switch out of my other dozer didnt help,got any suggestions?… read more
Dan
Dan
Technician
Auto Mechanics 1&2/diesel mech
14,865 satisfied customers
I have a 450h dozer that I bought with problems, went through
I have a 450h dozer that I bought with problems, went through the motor and put it in but the tractor wont even attempt to move! Have trans pressure but not even a shake of an attempt to move .Anyone … read more
Dan
Dan
Technician
Auto Mechanics 1&2/diesel mech
14,865 satisfied customers
Hi: I have a 850-B John Deere dozer hydro. After going around
Hi: I have a 850-B John Deere dozer hydro. After going around and around with JD techs ETC I am sick of all the bullshit. You know like we have to come out and run this test that test and oh by the wa… read more
Dan
Dan
Technician
Auto Mechanics 1&2/diesel mech
14,865 satisfied customers
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.

JustAnswer in the News:

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.
Web sites like justanswer.com/legal
...leave nothing to chance.
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.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

EstherWoodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

RobinElkton, Maryland

He answered my question promptly and gave me accurate, detailed information. If all of your experts are half as good, you have a great thing going here.

DianeDallas, TX

< Previous | Next >

Meet the Experts:

Curtis B.

Curtis B.

Technician

2,324 satisfied customers

Technican turned service manager with multiple lines of equipment and rental units.

Wayne

Wayne

Journeyman

1,298 satisfied customers

worked on many road graders, Bull dozers , skid steers, Rollers

Cat Man

Cat Man

Cat Engine Expert

578 satisfied customers

I am ASE Master Certified.

dieseldan55

dieseldan55

Mechanic

299 satisfied customers

Road Mechanic for Volvo Construction Equipment.

Chris (aka- Moose)

Chris (aka- Moose)

Technician

85 satisfied customers

24 years of experience diagnosing & repairing

Steve

Steve

Mechanic

42 satisfied customers

Heavy Equipment Mechanic for 25 years

JBFixxer

JBFixxer

Mechanic

22 satisfied customers

16+ years experience, hydraulics,hydrostatics, engines, fuel injection systems. And everything in between.

< Previous | Next >

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.

Show MoreShow Less

Ask Your Question

x