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

This answer was rated:

Well I bought a Komatsu backhoe and can't release the

Well I bought a...

Well I bought a Komatsu backhoe and can't release the parking brake to bring it home. I think it is similar to some of the Cat models. Is there a better place to look for info on Komatsu?

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

Komatsu WB140-2N

Mechanic's Assistant: Anything else you want the Equipment Mechanic to know before I connect you?

S/N KMTWB001H3A22573

Show More
Show Less
Ask Your Own Construction and Road Equipment Question
Answered in 3 days by:
10/13/2020
Mechanic: Dan, Technician replied 1 year ago
Dan
Dan, Technician
Category: Construction and Road Equipment
Satisfied Customers: 14,637
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 you out with this.I would start by testing for power on both sides of each one of your fuses replacing any fuse with power only on one side. Swap your relays one at a time where they known good one for testing purposes. Check your parking brake control to verify that it is functioning properly and free from any damage.thoroughly inspect your wiring and connector pins for any type of corrosion or damage as well. Reply back with the results of these checks if any further help is needed. It's a pleasure to help anyway I can.
Ask Your Own Construction and Road Equipment Question
Customer reply replied 1 year ago
Dan, thanks for your suggestions. I have just purchased this backhoe at an auction and had a limited time to get it off the yard. It does have various electrical issues, plus not having a legend for what the switches are for, and the labels are all gone. I assumed that the one warning light that worked on the dash was indicating the parking brake was not releasing. But it meant that the master cylinder was low on fluid. I now have it home and will apply your suggestions to find more problems. Thanks for your.
Mechanic: Dan, Technician replied 1 year ago
Thank you for the update. My recommendation for any new machine would be to obtain at the very least the operation manual for your model and serial number machine. You can usually find them either used on websites like eBay in the paper format or in a PDF format doing a search on the web.
Ask Your Own Construction and Road Equipment Question
Customer reply replied 1 year ago
Komatsu may be a big company, but their manuals are not as common as others. After purchasing and downloading outdated and partial versions, I have a good shop manual. I found the local dealer/parts source and ordered the correct operator and parts manuals. It will take a few days and I was in a panic to get it off the auction yard. Now that it is at my place I can learn Japanese if I need to
Mechanic: Dan, Technician replied 1 year ago
If you have a Japanese specification machine that is considered a gray market machine, it might not be specked out for the United States and usually are sold at a lower price because it's not supposed to be in the United States but for the country it's specified for. Sometimes there's problems matching up the correct parts on Gray market machines.
Ask Your Own Construction and Road Equipment Question
Customer reply replied 1 year ago
No, I have a US machine. I was joking that now is part of my many ongoing projects that take forever to finish. But I do have to learn to think the way their manuals are written. I used to work on Deutz equipment, and I have learned that not only are brands different, but countries also.
Mechanic: Dan, Technician replied 1 year ago
That is true. Thanks for the clarification.
Dan
Dan, Technician
Category: Construction and Road Equipment
Satisfied Customers: 14,637
Experience: 17+ yrs. shop and field experience with all major brands of heavy equipment and trucks - 1995 WyoTech graduate.
Verified
Dan and 87 other Construction and Road Equipment Specialists are ready to help you
Ask your own question now
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: 14,637
14,637 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
Need a serial number for a back decoded. 14bt4096/322232/7
14bt4096/322232/7 This is all I got. It's a JCB I think it's a 1400 but I have no idea … read more
Fieldtech59
Fieldtech59
416 satisfied customers
I have a wb 140. all works fine and has power, but the is
I have a wb 140. all works fine and has power, but the hoe is slow and you can only do one movement at a time. what can I check or ujust … read more
Dan
Dan
Technician
Auto Mechanics 1&2/diesel mech
14,637 satisfied customers
Komatsu wb140-2 serial numbeer a20455. Komatsu wb140-2
Komatsu wb140-2 serial numbeer a20455 JA: What is the complete model and serial number of your machine? Customer: Komatsu wb140-2 serial numbeer a20455 JA: Are you fixing this yourself? What have you … read more
Dan
Dan
Technician
Auto Mechanics 1&2/diesel mech
14,637 satisfied customers
Case 580n parking brake will not disengage. Loader backhoe
yes and nothing yet. i just took over store and was informed it won't disengage … read more
Curtis B.
Curtis B.
Technician
Associate Degree
2,324 satisfied customers
I have drained the oil from my Komatsu WB140-2 backhoe to
I have drained the oil from my Komatsu WB140-2 backhoe to change the two filters. The bottom sucking filter was loaded with fibers. Then I started the machine to get the oil to circulate from the main… read more
Dan
Dan
Technician
Auto Mechanics 1&2/diesel mech
14,637 satisfied customers
Komatsu model D31EX-21A Parking Brake won't release Error
Komatsu model D31EX-21A Parking Brake won't release Error Code Call E04 … read more
Dan
Dan
Technician
Auto Mechanics 1&2/diesel mech
14,637 satisfied customers
I am looking for a layout of the controls for our new 2000
I am looking for a layout of the controls for our new 2000 Komatsu wb140-2 I ordered a operating manual but it won't be here till sometime next week. … read more
Dan
Dan
Technician
Auto Mechanics 1&2/diesel mech
14,637 satisfied customers
I too have a D7G, s/n 92V where the parking brake is stuck
I too have a D7G, s/n 92V where the parking brake is stuck on … read more
Dan
Dan
Technician
Auto Mechanics 1&2/diesel mech
14,637 satisfied customers
I am doing a reparation of a Caterpillar 428C Backhoe Loader
Hi, I am doing a reparation of a Caterpillar 428C Backhoe Loader 8RN00001-04088 but can't seem to find the parts manual to see the exploded view in order to find the parts to change. Could you help me… read more
Curtis B.
Curtis B.
Technician
Associate Degree
2,324 satisfied customers
I have a komatsu sk815 s/n 37bf00818 skid steer. It blew a
I have a komatsu sk815 s/n 37bf00818 skid steer. It blew a fuse for the park brake and would only run a couple seconds and shut off. and after replacing fuse, it now will run fine but will not release… read more
Dan
Dan
Technician
Auto Mechanics 1&2/diesel mech
14,637 satisfied customers
I have a Cat 941 Traxcavator SN 80H983 that I can't get
I have a Cat 941 Traxcavator SN 80H983 that I can't get either steering clutch to engage. Can't steer tractor at all. What do I need to do to get these clutches to work. Worked fine when I brought it … read more
catmastertech
catmastertech
Field service technician
Vocational, Technical or Trade Scho
1,325 satisfied customers
I have a 1999 komatsu wb140 backhoe. The overall hydraulic
I have a 1999 komatsu wb140 backhoe. The overall hydraulic system's working pressure is 3,000 psi and max delivery is 43.6 gpm. I need to know the hydraulic flow rate in gallons per minute in the line… read more
Dan
Dan
Technician
Auto Mechanics 1&2/diesel mech
14,637 satisfied customers
Komatsu WB140-2 #F110xx Backhoe Loader |=| Problem: Starter
Komatsu WB140-2 #F110xx Backhoe Loader |=| Problem: Starter won't turn over. |=| Background: When I short relay K01 (Starting Relay) pins 30 and 87, then it starts just fine using ignition key. The vo… read more
Dan
Dan
Technician
Auto Mechanics 1&2/diesel mech
14,637 satisfied customers
I have a Komatsu WB140-2 backhoe. It has been working fine,
I have a Komatsu WB140-2 backhoe. It has been working fine, but now when I turn the key to start, it does not turn over the motor. The battery tests perfect, shifter is in neutral, drive lever is in n… read more
dieseldan55
dieseldan55
Mechanic
Vocational, Technical or Trade Scho
299 satisfied customers
Komatsu WB140-2 blowing 10amp fuse when you select reverse
Komatsu WB140-2 blowing 10amp fuse when you select reverse then it will not start but forward works fine.… read more
dieseldan55
dieseldan55
Mechanic
Vocational, Technical or Trade Scho
299 satisfied customers
I have a 410g john deere backhoe that the parking brake come
i have a 410g john deere backhoe that the parking brake come on moveing forword I have put new swich in and did do anything to help… read more
Curtis B.
Curtis B.
Technician
Associate Degree
2,324 satisfied customers
We have a fermec with a front loader and a backhoe. It is really
We have a fermec with a front loader and a backhoe. It is really old. The parking break chain broke and now the left rear tire brake is on and won't release. I need to move the tractor. How can I get … read more
Dan
Dan
Technician
Auto Mechanics 1&2/diesel mech
14,637 satisfied customers
I have a 1999 komatsu backhoe wb140.It seems like the automatic
I have a 1999 komatsu backhoe wb140. It seems like the automatic clutch is slipping. Can it be adjusted or will it need to be repaired or replaced?… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
1,298 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