Agriculture and Farm Equipment

Agriculture and farm Equipment repair questions? Ask a mechanic.

Ask an Expert,
Get an Answer ASAP!

This answer was rated:

I have a 748h deer skidder vin DW748HX620650 that keeps

I have a 748h John...
I have a 748h John deer skidder vin DW748HX620650 that keeps running hot the fan turns but it does not kick in high like it’s suppose to when the engine is working hard new egr cooler, new thermostats, new water pump, I think it is the fan pump and motor or the solenoids that controls the fan. Do u no the spec for the fan pump pressure? Also it does have this code 1508.03 witch is hydronic temp sensor I replaced the sensor on the bottom of the tank and inspected wiring I think this is the correct sensor. Would that have anything to do with the machine running hot? And is that the correct sensor for the code I am having. We need this going ASAP thanks
Show More
Show Less
Ask Your Own Agriculture and Farm Equipment Question
Customer reply replied 3 months ago
Any help or response would be nice thanks
Customer reply replied 3 months ago
This is usually helpful but I hadn’t received a response
Answered in 2 days by:
3/30/2018
Dan
Dan, Technician
Category: Agriculture and Farm Equipment
Satisfied Customers: 6,792
Experience: 17+ yrs. shop and field experience with all major brands of heavy equipment, trucks and farm equipment - 1995 WyoTech graduate.
Verified

Hi ,My name is Dan. I will be glad to help. We can follow up as needed on here, Give me some time to review your information and post my responses. Im not an employee of the site but I help on here as time allows in between jobs. Response time will vary depending on my work load , etc.

1508.03 Hydraulic Oil Temperature Sensor voltage is too high (cc# ***** above 4.97 V). The device or wiring is faulty.

Ask Your Own Agriculture and Farm Equipment Question

Click below for the manifold... Inspect it for trash/debris and damaged o rings etc.

Ask Your Own Agriculture and Farm Equipment Question
Customer reply replied 3 months ago
That is the sensor I changed and inspected the wiring now when u get time please answer the rest of my question thanks

I can only type so fast....

Ask Your Own Agriculture and Farm Equipment Question
That sensor not reading correctly could potentially affect the machine running hotter as it regulates fan speed into the valve by the signal the sensor gives. So that sensor fault should be repaired. Also all other potential causes of overheating should be looked into such as. Thermostat.... Water pump.. belts..... Restricted radiator core as if you cannot see light through the core from one side to the other than air cannot pass through it either. Make sure the Shroud is okay in the fan is in good shape. Also a tired fan hydraulic motor could cause the fan speed to be slower. Look for signs of metal or debris in the hydraulic filters that would indicate a potential component failure. Test continuity of the wiring harness with an ohmmeter and check for shorted or grounded wiring. Check for excessive voltage from the machine ECM as if the ECM is putting out incorrect voltage it will throw off the sense of return voltage if you've already confirm that there is no other shorts in the wiring where voltage could be higher coming from another source such as a short. If the wiring harness and sensor are okay then there is a possibility that the 5-volt reference from the ECM controller if higher than 5 volts it could be a problem with the controller itself and even a potential software related issue. Check for these things and let me know. Please remember to take a moment to write my answers as that is how the site credits my time helping on the site. Five-star ratings and bonuses are greatly appreciated.
Dan
Dan, Technician
Category: Agriculture and Farm Equipment
Satisfied Customers: 6,792
Experience: 17+ yrs. shop and field experience with all major brands of heavy equipment, trucks and farm equipment - 1995 WyoTech graduate.
Verified
Dan and 87 other Agriculture and Farm Equipment Specialists are ready to help you
Ask your own question now
Customer reply replied 2 months ago
Thanks it ended up being the solenoids I replaced those and all worked fine thanks
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: Agriculture and Farm Equipment
Satisfied Customers: 6,792
6,792 Satisfied Customers
Experience: 17+ yrs. shop and field experience with all major brands of heavy equipment, trucks and farm equipment - 1995 WyoTech graduate.

Dan is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

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

4,104 satisfied customers

Technican turned service manager on multiple lines of equipment and rental equipment.

Wayne

Wayne

Journeyman

1,278 satisfied customers

34 + years as a mechanic

dieseldan55

dieseldan55

Mechanic

42 satisfied customers

Road mechanic for Volvo Construction Equipment.

Cat Man

Cat Man

Cat Engine Expert

36 satisfied customers

I am ASE Master Certified.

MowerDocMD

MowerDocMD

Technician

33 satisfied customers

Own LaGrange Small Engine Repairing farm tractors and equipment

Chris (aka-Moose)

Chris (aka-Moose)

Technician

22 satisfied customers

16 years of experience

JBFixxer

JBFixxer

Mechanic

20 satisfied customers

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

< Previous | Next >

Related Agriculture and Farm Equipment Questions
I have a deere 440 skidder that's been sitting for a time,
I have a john deere 440 skidder that's been sitting for a long time, how do I prime/bleed the fuel line to get it going? … read more
Curtis B.
Curtis B.
Technician
Associate Degree
4,104 satisfied customers
We have a 997 Deere diesel with rear throw. It seems to be
We have a 997 John Deere diesel with rear throw. It seems to be over heating. A buzzer goes off and the mower shuts down. Any ideas? We have blown the radiator out, put new air filters in, put new sea… read more
Curtis B.
Curtis B.
Technician
Associate Degree
4,104 satisfied customers
I have a excavator Deere 490E Hydraulic oil over heating, I
I have a excavator John Deere 490E Hydraulic oil over heating, I change filters, Then replaced hydraulic Radiator core, Then added a 12 volt electric fan to the new oil cooler, after a few hours cylin… read more
Dan
Dan
Technician
6,792 satisfied customers
I have a Deere 5320'it starts and goes in to gear but won't
Hi I have a john Deere 5320'it starts and goes in to gear but won't move hydrolic oil is ok and all other hydrolics works linkages ingage in gear box I can see under the machine … read more
Curtis B.
Curtis B.
Technician
Associate Degree
4,104 satisfied customers
My 4710 deere sprayer, I can start it but cant accelerate or
My 4710 john deere sprayer, I can start it but cant accelerate or shift gear and its braked. Last time I used was working and today it isn't. I put on new battery that's it. And the left boom second s… read more
Dan
Dan
Technician
6,792 satisfied customers
How to replace a fan belt on a 6400 deere tractor, fan belt
how to replace a fan belt on a 6400 john deere tractor … read more
Dan
Dan
Technician
6,792 satisfied customers
I am removing front hydralic pump on deere 3020 I have every
I am removing front hydralic pump on john deere 3020 I have every thing loose except the short line on top from cooler. How do I remove it? … read more
Curtis B.
Curtis B.
Technician
Associate Degree
4,104 satisfied customers
My brother in-law owns a 7720 Deere combine.He's having
My brother in-law owns a 7720 John Deere combine.He's having problems with it overheating when its sitting idol and nothing running.The oil gets over 200 degrees .Is that normal. And what should he ch… read more
Curtis B.
Curtis B.
Technician
Associate Degree
4,104 satisfied customers
Have a new to me Deere 4250 that when I bought it has a
Have a new to me John Deere 4250 that when I bought it has a brand new rad in it. Tractor is running hot by gauge so locked fan clutch up, checked thermostats and put new water pump on it. Still runni… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
1,278 satisfied customers
I am having a problem with my deere 5085e. It keeps throwing
I am having a problem with my john deere 5085e. It keeps throwing the code 94.18 which is low fuel pressure signal. I have changed both fuel filters, the fuel transfer pump, checked the fuel sender in… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
1,278 satisfied customers
TM 115 New Holland tractor keeps over heating the hydraulic
TM 115 New Holland tractor keeps over heating the hydraulic fluid. changed all filters and fluid, cooler screen is clear. overheats when tractor is being used, or just driving down the road empty. war… read more
dd85
dd85
Service Manager
20 years Service Manager at Dealersh
239 satisfied customers
Have a John Deere compact utility tractor 2210 - suddenly started
Have a John Deere compact utility tractor 2210 - suddenly started overheating this afternoon. Screen in front of the radiator is clear, as is the front screen. Obviously will wait for it to cool down … read more
Curtis B.
Curtis B.
Technician
Associate Degree
4,104 satisfied customers
I have a John Deere 5510 that has just recently started running
I have a John Deere 5510 that has just recently started running hot; I was planning to flush the radiator. I have been unable to find a new thermostat; should I order a new one before flushing. If flu… read more
Curtis B.
Curtis B.
Technician
Associate Degree
4,104 satisfied customers
John Deere 1650 Oil pressure problem Pressure at 800 RPM
John Deere 1650 Oil pressure problem Pressure at 800 RPM before engine gets warmed up is 40lbs After you use tractor and have it fully warmed up pressure drops to 10lbs at idle & 25lbs at full throttl… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
1,278 satisfied customers
I have a John Deere X728 it just heated to the red section
I have a John Deere X728 it just heated to the red section and shut off mower deck, how can I fix it?… read more
Curtis B.
Curtis B.
Technician
Associate Degree
4,104 satisfied customers
i have a 2008 john deere 648h skidder that is running hot.
i have a 2008 john deere 648h skidder that is running hot. I changed all 3 thermostats an a few other things. it has a reversing engine fan an I think it could be out . how can I tell I changed the bi… read more
Expert
Expert
John Deere 6430 wont charge.Put new alternator on nothing.
John Deere 6430 won't charge.Put new alternator on nothing. Four front lights do not work. Two in the middle on low beam will work though? On the alternator the new one has B1 and B2 the old one only … read more
Dan
Dan
Technician
6,792 satisfied customers
I asked this question before & no answer. I have 6300L john
I asked this question before & no answer. I have 6300L john deere & i lost all of my hydraulics at the same time. I was tilling & i lost my steering---then 3 point would not raise-- I then shut tiller… read more
Curtis B.
Curtis B.
Technician
Associate Degree
4,104 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.

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