Construction and Road Equipment

Construction and road equipment repair questions? Ask a mechanic ASAP

Ask an Expert,
Get an Answer ASAP!

I HAVE AN LINKBELT LS2800 C SERIES 2 EXCAVATOR 1978 MODEL.

Customer Question
MAN ####-##-#### *****# ***** ENGINE...
I HAVE AN LINKBELT LS2800 C SERIES 2 EXCAVATOR 1978 MODEL. MAN ####-##-#### *****# ***** ENGINE RUNS GREAT-I BOUGHT A GUAGE AND TESTED PUMPS AND THEY ARE SPEC. WE WERE RUNNING PERFECTLY AND ALL OF A SUDDEN WHEN YOU CLOSE OR OPEN BUCKET TO THE STOPS IT PULLS MOTOR DOWN AND AT THE SAME TIME RIGHT TRACK STARTED RUNNING REAL FAST TO THE POINT OF KILLING THE MOTOR. ALSO THE BUCKET LOOSES ITS GRIP ON A STUMP IN A SHORT TIME WHEN MOVING THEM AROUND.ALL OTHER RELIEF SETTINGS LOOK GOOD ON THE REST OF THE MACHINE EXCEPT BUCKET. DONT KNOW ABOUT THE RIGHT TRACK. IT SPIKES EITHER WAY ON THE BUCKET. TRIED ADJUSTING BUT THATS NOT IT. THE MACHINE IS WORKING HARD ALL OF A SUDDEN AND WILL OVER HEAT AFTER A SHORT TIME. MABEY 15 MINUTES. YOU CAN SEE THE MOTOR IS WORKING WAY TOO HARD. ALL OF THESE THINGS HAPPENED AT ONCE.
Submitted: 2 years ago.Category: Construction and Road Equipment
Show More
Show Less
Ask Your Own Construction and Road Equipment Question
Answered in 53 minutes by:
2/2/2016
Mechanic: Dan, Technician replied 2 years ago
Dan
Dan, Technician
Category: Construction and Road Equipment
Satisfied Customers: 6,887
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 help. It sounds like the pump swash plate or control is sticking the pump in full stroke. Check the return filter in the tank for signs of metal/debris indicating a pump or component failure occurring. It will look like fine glitter in the oil and filter. Also check the relief cartridges in the main control valve for damaged o rings or debris etc causing then to stick including the control valve spool.Let me know

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: 6,887
6,887 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

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

1,409 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
I have a 2014 Cat 302.7D mini excavator with 3,900 hrs that
I have a 2014 Cat 302.7D mini excavator with 3,900 hrs that has several issues. The left track is very week. The right track will not move at all unless I curl the bucket. When I curl the bucket it wi… read more
Dan
Dan
Technician
Auto Mechanics 1&2/diesel mech
6,887 satisfied customers
I have a cat 307ssy tracks slow without much power I have
I have a cat 307ssy tracks slow without much power I have new final drives not much better now can I adjust the HyD pump pressure… read more
Dan
Dan
Technician
Auto Mechanics 1&2/diesel mech
6,887 satisfied customers
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
Technician
Auto Mechanics 1&2/diesel mech
6,887 satisfied customers
I have a linkbelt 4300c2 blow thw travel on track replaced
i have a linkbelt 4300c2 blow thw travel on track replaced it now it only has 300 lbs at track other side works fine checkd pump work fine both sides … read more
Dan
Dan
Technician
Auto Mechanics 1&2/diesel mech
6,887 satisfied customers
I have a Catapillar 320BL the hydraulic functions are losing
I have a Catapillar 320BL the hydraulic functions are losing power boom up is extremely slow and tracking seems to have lost a lot of power as well The pilot pressure is at 600 psi I tested the two po… read more
catmastertech
catmastertech
Field service technician
Vocational, Technical or Trade Scho
1,287 satisfied customers
Cat 302.5 mini ex. Drive locks up. All other functions still
Cat 302.5 mini ex. Drive locks up. All other functions still work. If I use the bucket I can pull mini forward and drives re engage.… read more
Dan
Dan
Technician
Auto Mechanics 1&2/diesel mech
6,887 satisfied customers
Link belt ls1600CII. The main problem in having is when the
Link belt ls1600CII. The main problem in having is when the boom is lifted, its slow and bogs the engine down unless you bottom out the arm function at the same time, then the boom shoots right up. Ev… read more
Dan
Dan
Technician
Auto Mechanics 1&2/diesel mech
6,887 satisfied customers
I have a Kobelco SK160LC 2007 model excavator, The hyd all
I have a Kobelco SK160LC 2007 model excavator, The hyd all work good except the right track is slow and weak, and the bucket cyl. is slow and weak. I it to be in the pump but which one??… read more
Dan
Dan
Technician
Auto Mechanics 1&2/diesel mech
6,887 satisfied customers
I have a 2007 ecr88. I bought it at an auction. All fluids
I have a 2007 ecr88. I bought it at an auction. All fluids and filter were just changed. When I try to lift machine to clean tracks it lifts very slow and only about a ft nothing like my pc78 komatsu.… read more
dieseldan55
dieseldan55
Mechanic
Vocational, Technical or Trade Scho
273 satisfied customers
Hi i have excavotor Hyundai r210lc-3 its 1997year made and
Hi i have excavotor Hyundai r210lc-3 its 1997year made and my right side tracks doesn"t run as quick as the left side(the left side actually is barely running). Moreover when i try to do something wit… read more
Dan
Dan
Technician
Auto Mechanics 1&2/diesel mech
6,887 satisfied customers
Link belt 2700C series II Hydraulic IssuesA short at the
Link belt 2700C series II Hydraulic Issues A short at the split bolt connector in the console has fried the circuit boards in the control panel, so I've converted the machine to manual controls and th… read more
Dan
Dan
Technician
Auto Mechanics 1&2/diesel mech
6,887 satisfied customers
I have 215 lc a steel line started leaking so I changed It
I have 215 lc a steel line started leaking so I changed It now my right track is dead only one track is driving and when I push the steer lever over the machine changes direction with pedal down eithe… read more
Dan
Dan
Technician
Auto Mechanics 1&2/diesel mech
6,887 satisfied customers
i have a kobelco excavetor:sk200-111.the bucket,s fungtion
i have a kobelco excavetor:sk200-111.the bucket,s fungtion for folding and unfolding is too slow,and the right track is slow too in moving.i have checked the presure for the bucket and i found it's lo… read more
Dan
Dan
Technician
Auto Mechanics 1&2/diesel mech
6,887 satisfied customers
BEST CAT EXCAVATOR FOR NEW ALLUVIAL GOLD MINING PROJECT IN
BEST CAT EXCAVATOR FOR NEW ALLUVIAL GOLD MINING PROJECT IN WESTERN GHANA. INITIAL SUGGESTION IS TO ACQUIRE 4/5 USED 330CL WORKING 8/10 HRS. DAILY. ORE IS MOSTLY GRAVEL AND SAND. ANY IDEAS?… read more
catmastertech
catmastertech
Field service technician
Vocational, Technical or Trade Scho
1,287 satisfied customers
Could you please advise if caterpillar make or can make a 312d
Could you please advise if caterpillar make or can make a 312d Excavator with a hydraulic cab riser. Thanks… read more
catmastertech
catmastertech
Field service technician
Vocational, Technical or Trade Scho
1,287 satisfied customers
Hello, we have a Caterpillar 311b with some hydraulic issues,
Hello, we have a Caterpillar 311b with some hydraulic issues, here are the symptoms- with travel just slightly engaged(direction doesn't matter, same symptoms forwards or reverse), machine not moving,… read more
Dan
Dan
Technician
Auto Mechanics 1&2/diesel mech
6,887 satisfied customers
I have a 1980 235 Cat excavator and recently the stick is very
I have a 1980 235 Cat excavator and recently the stick is very slow, also one track has lost power. I checked the pressure on the pumps, both pressure up to 3700 psi, pilot pressure is at 325 at the s… read more
catmastertech
catmastertech
Field service technician
Vocational, Technical or Trade Scho
1,287 satisfied customers
on 314cl tracks lock up on both sides one at a time or both
on 314cl tracks lock up on both sides one at a time or both also free wheels when walking let off one track other keep going like its in free wheel for about 10 feet also when walking let off both ped… read more
Dan
Dan
Technician
Auto Mechanics 1&2/diesel mech
6,887 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