Construction and Road Equipment

Construction and road equipment repair questions? Ask a mechanic ASAP

Ask an Expert,
Get an Answer ASAP!

I have a 1994 HTC 8665 crane with some problems extension…

Customer Question
Hello I have a...

Hello I have a 1994 HTC 8665 crane with some problems extension retraction circuit

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

Linkbelt, HTC 8665 D614-1835. The boom outer mid extension extends at 2500 psi with the sound of oil running over relief and only with override switch on console. Retracts at 3000-3200 psi and retracts normal. the rated limit control system is running in override or bypass on box behind cab since the scale function is not working

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

The extend/retract pedal supply voltage is 4.6 to 4.7 volts with pedal connected, and 6.2 volts with pedal disconnected measured at the pedal and at the etcs box plug and inside the plug on circuit board. the pedal potentiometer resistance from supply to ground pin measureds 500 ohms. I have a schematic of the machine wiring harness but do not know how the rlc and the etcs system are interconnected apparently the pedal quit working to extend once after someone tried to repair the rlc system I also am not sure if it is normal for supply volts to be as low as 4.6 volts and what could cause the difference given that the the voltage measures the same at the pedal and at the controller

Submitted: 4 months ago.Category: Construction and Road Equipment
Show More
Show Less
Ask Your Own Construction and Road Equipment Question
Answered in 1 day by:
3/20/2018
Mechanic: Jeremy, Technician replied 4 months ago
Jeremy
Jeremy, Technician
Category: Construction and Road Equipment
Satisfied Customers: 3,782
Experience: ASE Medium/Heavy Duty Technician, Hydraulics, Brakes, Electrical Certified
Verified

My name is ***** ***** I will assist you with your question today.

I'm an independent contractor and I don't get paid until a rating has been made.

We can go back and forth as needed to help resolve the issue you are having. Follow ups are free after ratings, so rate in confidence!

I don’t normally work on these, but I can try to assist you where I can. Did you still need assistance with this? Or do you prefer to work with a tech that knows the equipment better?

_______________________________________________________________________________

You want a 5 star service and I want to provide a 5 star service. Please consider that I don't know your skill level as well as I can't see, touch, smell, hear the vehicle/machine in question. Please provide as much detail as possible and I will provide as much back.

Once an answer is provided, you should see a rating screen. Please rate my personal service to you. The ratings are my personal feedback, they are not the site feedback.

Thank you for allowing me to assist you through Just Answer!

Jeremy

Ask Your Own Construction and Road Equipment Question
Customer reply replied 4 months ago
I'm good with your assistance
I don't want to brag or talk my skills up but just so you know who you are dealing with I'm a Licenced Heavy Equipment Technician (in Canada we do the licence thing) I operate a mobile repair business mostly with construction equipment and cranes are not my main area of expertise and only have some of the service I have a schematic of electrical and hydraulic systems and I have deduced that there are two basic areas of problems the hydraulic (the pressures mentioned) and electrical/electronic control my main priority it the electrical as the my customer is ok leaving the hydraulic problem as is since it functions as is
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 Curtis B. Your Own Question
Curtis B.
Curtis B.
Curtis B., Technician
Category: Construction and Road Equipment
Satisfied Customers: 1,422
1,422 Satisfied Customers
Experience: Technican turned service manager with multiple lines of equipment and rental units.

Curtis B. 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

1,422 satisfied customers

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

Wayne

Wayne

Journeyman

650 satisfied customers

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

Cat Man

Cat Man

Cat Engine Expert

517 satisfied customers

I am ASE Master Certified.

dieseldan55

dieseldan55

Mechanic

273 satisfied customers

Road Mechanic for Volvo Construction Equipment.

Chris (aka- Moose)

Chris (aka- Moose)

Technician

42 satisfied customers

16 years of experience

Steve

Steve

Mechanic

42 satisfied customers

Heavy Equipment Mechanic for 25 years

JBFixxer

JBFixxer

Mechanic

20 satisfied customers

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

< Previous | Next >

Related Construction and Road Equipment Questions
We are using a 310KEP and need to know if we can switch the
We are using a 310KEP and need to know if we can switch the controls? … read more
Dan
Dan
Auto Mechanics 1&2/diesel mech
I have a link belt 3400q that stalls when the bucket is
I have a link belt 3400q that stalls when the bucket is opened or closed … read more
Dan
Dan
Auto Mechanics 1&2/diesel mech
Catmastech 321c SN mcf00334 when boom is held over to releaf
catmastech 321c SN mcf00334 when boom is held over to releaf stalls machine no codes power shit is good right pmp at idel is 434 psi… read more
catmastertech
catmastertech
Field service technician
Vocational, Technical or Trade Scho
1,282 satisfied customers
I have a 312 cat excavtor that doesnt want to turn, model
hi i have a 312 cat excavtor that doesnt want to turn … read more
Dan
Dan
Auto Mechanics 1&2/diesel mech
I have a JD 270C LC excavator, over the winter this machine
I have a JD 270C LC excavator, over the winter this machine had some major maintenance done to it, main hyd valve removed and resealed, swing motor removed and resealed, main pump and gear drive remov… read more
Dan
Dan
Auto Mechanics 1&2/diesel mech
I am a New Holland tech, and have gotten involved with a CAT
I am a New Holland tech, and have gotten involved with a CAT 236 skid steer that the RH boom and aux. functions do not work on. I have checked to see that the seat switch and park brake switch both ar… read more
Dan
Dan
Auto Mechanics 1&2/diesel mech
I have a 420 D cat backhoe steers good without a load in the
I have a 420 D cat backhoe steers good without a load in the bucket . When you get a load on the bucket with main hyd. valve in neutral position steering quits. Move any hyd spool steers good . I thin… read more
Dan
Dan
Auto Mechanics 1&2/diesel mech
I have a 2007 d3g that is giving me codes 254, 252, 256,
I have a 2007 d3g that is giving me codes 254, 252, 256, 255, 244, and 124. The hydrostat light is on and the parking brake won't turn off.… read more
catmastertech
catmastertech
Field service technician
Vocational, Technical or Trade Scho
1,282 satisfied customers
I have a E120b catapillar excavator and motor was almost
I have a E120b catapillar excavator and motor was almost stalling when lifting boom I have replaced 4 relief valves had hydronic pump reconditioned 130 hours ago ,have recently replaced hydronic oil a… read more
catmastertech
catmastertech
Field service technician
Vocational, Technical or Trade Scho
1,282 satisfied customers
I have an older cat th220b, and the tilt started acting up a
Hi, I have an older cat th220b, and the tilt started acting up a few weeks ago. The tilt function started slowing down, and has progressively gotten slower. Now it will only tilt up and very slowly, b… read more
catmastertech
catmastertech
Field service technician
Vocational, Technical or Trade Scho
1,282 satisfied customers
Samsung se 130 lmc 2 sn dby0937 when asked to travel engagement
Samsung se 130 lmc 2 sn dby0937 when asked to travel engagement is very slow as well as boom down all other functions operate fine rebuilt swivel joint and new filters the problem started all at once… read more
dieseldan55
dieseldan55
Mechanic
Vocational, Technical or Trade Scho
273 satisfied customers
I own a CAT Challenger 75C. Recently, when I tried to turn
I own a CAT Challenger 75C. Recently, when I tried to turn right, it sped up and went straight. It did this while I was pulling a heavy disc on it. It happened twice. I had trouble stopping it. Then I… read more
catmastertech
catmastertech
Field service technician
Vocational, Technical or Trade Scho
1,282 satisfied customers
I Have a cat d4g Dozer 2003 and when u put it in forward or
I Have a cat d4g Dozer 2003 and when u put it in forward or reverse at half throttle it bearly moves. It only goes when u rev the throttle all the way up I think it's a bad solenoid valve but which on… read more
Dan
Dan
Auto Mechanics 1&2/diesel mech
I have a Komatsu PC50MR-2 with some hydraulic issues. The first
I have a Komatsu PC50MR-2 with some hydraulic issues. The first issue is that the boom raise function is immediately overridden when any other function is initiated at the same time (ie. Crowd or Curl… read more
Dan
Dan
Auto Mechanics 1&2/diesel mech
I have a L120E wheel loader. This morning when moving snow
I have a L120E wheel loader. This morning when moving snow piles I got out to move an item, set the parking brake. When on got back in the parking brake wont release. I unplugged and plugged back in, … read more
dieseldan55
dieseldan55
Mechanic
Vocational, Technical or Trade Scho
273 satisfied customers
cat 279c intermittently loses r/h joy stick function. seat
cat 279c intermittently loses r/h joy stick function. seat and armrest switches working properly. l/h joystick functions properly. any thoughts?… read more
Dan
Dan
Auto Mechanics 1&2/diesel mech
S190 makes shrieking noise when powered forward and will not
S190 makes shrieking noise when powered forward and will not move also red light with four arrows outside of square box lights up, then machine dies. The sound is like belts slipping.… read more
Dan
Dan
Auto Mechanics 1&2/diesel mech
Cat 262C with Hydraulic warning light: Codes 2477-3 and 2475-3.
Cat 262C with Hydraulic warning light: Codes 2477-3 and 2475-3. The hydraulic fluid was low and a warning light came on. Added T0-2 hydraulic oil to top off. The hydraulic lift/tilt does not work; the… read more
catmastertech
catmastertech
Field service technician
Vocational, Technical or Trade Scho
1,282 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