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: 1 month 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 1 month ago
Jeremy
Jeremy, Technician
Category: Construction and Road Equipment
Satisfied Customers: 3,740
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 1 month 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?
Ask Curtis B. Your Own Question
Curtis B.
Curtis B.
Curtis B., Technician
Category: Construction and Road Equipment
Satisfied Customers: 1,362
1,362 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

1,362 satisfied customers

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

Wayne

Wayne

Journeyman

615 satisfied customers

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

Cat Man

Cat Man

Cat Engine Expert

495 satisfied customers

I am ASE Master Certified.

dieseldan55

dieseldan55

Mechanic

270 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
Do u know about 1986 deere 490 excavator rotary manifold. Do
do u know about 1986 john deere 490 excavator rotary manifold … read more
Dan
Dan
Auto Mechanics 1&2/diesel mech
I have a Takeuchi TB230 mini excavator. The dang hydraulics
I have a Takeuchi TB230 mini excavator. The dang hydraulics on it are very random. There are times where it is a smooth as glass and then all of the sudden it will jump and shake ya to death. It does … read more
Dan
Dan
Auto Mechanics 1&2/diesel mech
I have a Genie 644 lift that will not lift to capacity. Pump
I have a Genie 644 lift that will not lift to capacity. Pump pressure is good. There is a switch under the steering wheel that reads pump off. when I cycle this switch the lift will operate to capacit… read more
Dan
Dan
Auto Mechanics 1&2/diesel mech
I have a 1986 deere straight 490 excavator, working on
Hello I have a 1986 john deere straight 490 excavator, working on rotary manifold, I have john deere parts manual but I have replaced 4 seal and I need to know where the top o ring goes, there are 3 l… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
615 satisfied customers
Gehl 353 mini excavtor will not swing to the right. Sure.
gehl 353 mini excavtor will not swing to the right … read more
Dan
Dan
Auto Mechanics 1&2/diesel mech
How do you take out the fuel tank on a 277b cat.
yes, Ive got the cab up and the joysticks loose and the HVAC plastic tube loose … read more
Dan
Dan
Auto Mechanics 1&2/diesel mech
Altec ah125, lower boom will not boom down, currently stuck
Altec ah125, lower boom will not boom down, currently stuck straight up, all other functions work correctly… read more
Dan
Dan
Auto Mechanics 1&2/diesel mech
I have cat v155c fork lift. when it warms up the
I have cat v155c fork lift. when it warms up the transmission starts to slip. I can back it up ,but it will not go forward if I rev it up it will try to move forward… read more
Dan
Dan
Auto Mechanics 1&2/diesel mech
Have a p&h 22 ton Rt model cn115 s/n56578 outriggers will
Have a p&h 22 ton Rt model cn115 s/n56578 outriggers will not retract in and horiz is very slow and no power. I changed all Hydralic filters electric switch panel did get wet in rain put dry now … read more
Jeremy
Jeremy
Technician
3,740 satisfied customers
I've got a 1976 case backhoe. The starter went out and I
I've got a 1976 case backhoe. The starter went out and I purchased a new one, but that one stopped workiing shortly after. I replaced the positive cable and the solenoid, but it still didn't work. Wha… read more
Curtis B.
Curtis B.
Technician
1,362 satisfied customers
I have a 2004 GMC c7500 with a 7.2l cat diesel engine died
i have a 2004 GMC c7500 with a 7.2l cat diesel engine died while driving and wont restart. has all 6 injector codes SPN 651-656 FMI 11. will start and die with either. … read more
timothy ratcliff
timothy ratcliff
t3
Vocational, Technical or Trade School
12 satisfied customers
I have 226b Cat skid loader, had the auger attachment on and
I have 226b Cat skid loader, had the auger attachment on and operating, and with no warning the hydraulics to it and the machine quit, but engine still running. Machine will not move … read more
catmastertech
catmastertech
Field service technician
Vocational, Technical or Trade Scho
1,287 satisfied customers
Deere 4640 keeps blowing power shift valve gasket between
John Deere 4640 keeps blowing power shift valve gasket between two of the ports. After it blows, pressure is getting to clutch packs and causing drag in all gears except 7 and 8. The only other proble… read more
Dan
Dan
Auto Mechanics 1&2/diesel mech
I have a TH 514 telehander. Been working fine but get in it
Been working fine but get in it today and won't go any faster than idle … read more
Dan
Dan
Auto Mechanics 1&2/diesel mech
I have a v155c forklift. after using it for about half a
I have a v155c forklift. after using it for about half a hour the trans starts to slip.if I give it more gas and then let off , it will more a little bit … read more
timothy ratcliff
timothy ratcliff
t3
Vocational, Technical or Trade School
12 satisfied customers
I am working on a 12e motorgrader serial number 99e9553. I
I am working on a 12e motorgrader serial number 99e9553. I am looking for the procedure to adjust he clutch.… read more
Curtis B.
Curtis B.
Technician
1,362 satisfied customers
I have a KX 121 -3 kubota excavator. All hydraulic seems to
I have a KX 121 -3 kubota excavator. All hydraulic seems to be ok but walking is weak on both tracks. After running a bit it barely will turn… read more
Dan
Dan
Auto Mechanics 1&2/diesel mech
I have a terex telehandler th0806a serial 8322 8000lb lift
I have a terex telehandler th0806a serial 8322 8000lb lift when u put it in foward or reverse it moves but is real slow in all three gears gets worse after it gets out is their a transmission pump wha… read more
Dan
Dan
Auto Mechanics 1&2/diesel mech
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