Heavy Equipment
Heavy equipment repair questions? Ask an Expert now.
Connect one-on-one with {0} who will answer your question
Answered in 1 hour by:
2/19/2009
catmastertech, Technician
Category: Heavy Equipment
Satisfied Customers: 4,196
Experience: 25 years Cat, 3 years Case
VerifiedLook at the pedal were it rocks in the floor, most have a locking pin that when removed allows the pedal two-way flow control. If this is so just add hoses to the blanked valve section.
I am assuming the machine was sold for hammer or tampfoot attachment since it has a one-way pedal. The main valve body should not be a problem as most are sold with one extra valve for attachments. My experience is on the 311 and larger machines but, I think they work the same. Look at the lines on the boom for attachments. They sometimes had shutoff valves on the stick or, they could be plugged on the back of the boom. One line should go back to the main valve and the other would go to a block with direction control lever on it. This lever is for hammers to return flow directly to tank. The groove on the lever shows direction of flow. If you have the owners manual it will show how to set valves for two-way flow. And yes, you will need a two-way pedal to control the main valve.
catmastertech, Technician
Category: Heavy Equipment
Satisfied Customers: 4,196
Experience: 25 years Cat, 3 years Case
Verifiedcatmastertech and 87 other Heavy Equipment Specialists are ready to help you
How JustAnswer works
Describe your issueThe assistant will guide you
Chat 1:1 with a technicianLicensed Experts are available 24/7
100% satisfaction guaranteeGet all the answers you need
Related Heavy Equipment Questions
I have a Deere LLC 160 excavator and the thumb is super
I have a John Deere LLC 160 excavator and the thumb is super slow. When I fire it up in the am it runs alright then after ten minutes it is painfully slow … read more
Daniel Wilson
Associate Degree
1,343 satisfied customers
I have a PC228USLC that was hydraulic plumbed by previous owner
I have a PC228USLC that was hydraulic plumbed by previous owner for vibrating tamper. What needs to be changed at control valve to use same circuit to operate hyd thumb?… read more
Jeff
High School or GED
325 satisfied customers
I have a hitachi ex60-3 excavator I just purchased. I was told
I have a hitachi ex60-3 excavator I just purchased. I was told it was a 1995 but I'm not sure. I'm also trying to figure out if it is a grey market machine? The serial number is XXXXX Thank you, Mike… read more
Daniel Wilson
Associate Degree
1,343 satisfied customers
I have a cat 307b that is set up with a breaker on the auxillary
I have a cat 307b that is set up with a breaker on the auxillary hydraulics. I would like to set it up with a thumb also. I am having trouble getting pressure to both sides of the auxillary. I moved t… read more
catmastertech
Technician
Vocational, Technical or Trade Scho
4,196 satisfied customers
I just bought a cat 307 excavator and want to switch the controls
I just bought a cat 307 excavator and want to switch the controls to john deere. Whats the best way to do this?… read more
catmastertech
Technician
Vocational, Technical or Trade Scho
4,196 satisfied customers
thumb only works..One side of the aux hydraulics wont move.
I just installed a thumb on a John Deere 27c zts excavator. The thumb only works in one direction. One side of the aux hydraulics won't move. I've hooked the machine up to a 4 in one bucket and the bu… read more
Daniel Wilson
Associate Degree
1,343 satisfied customers
mitsubishi: hello I have an hydraulic pump mounted..liter diesel
hello I have an hydraulic pump mounted on a 3.5 liter diesel (mitsubishi). It are actually 3 pumps. Came from an cat digger 7-10 tonnes I think. Want to use it ,but have no schematic. Wonder if you co… read more
catmastertech
Technician
Vocational, Technical or Trade Scho
4,196 satisfied customers
komatsu p35r..unit has a control valve on the floor .
I recently purchased a komatsu p35r , I am installing a hydro thumb . the unit has a control valve on the floor . My question is will this control wourk with the hydro thumb . The valve don't control … read more
Daniel Wilson
Associate Degree
1,343 satisfied customers
small kabota excavator with a control valve..hydraulic thumb..cylinder
We have a small kabota excavator with a control valve that does not have a pressure relief valve. We are installing a hydraulic thumb that requires a 1000# XXXXX that can be overridden by the main buc… read more
Dan
Road sevice Mechanic
Vocational, Technical or Trade Scho
354 satisfied customers
Mitsubishi: I am putting a hydraulic thumb on my excavator..heads
Hi Donnie, I was wondering if you could help me. I am putting a hydraulic thumb on my excavator and the local hydraulics dudes are scratching their heads. The excavator is Mitsubishi MS280. The proble… read more
catmastertech
Technician
Vocational, Technical or Trade Scho
4,196 satisfied customers
EXCAVATOR..Hydraulic system..controls..valves..the pedals/hand levers
CAT EXCAVATOR 315L Serial # XXXXX (Year 1993 > 1995). Hydraulic system controls. In particular the track control valves & lines attached to the pedals/hand levers . While driving across an open fie… read more
catmastertech
Technician
Vocational, Technical or Trade Scho
4,196 satisfied customers
heavy equipment..recently bought..excavator..on at a CAT dealership
Hi, I am new to the heavy equipment world and recently bought a CAT 320 B L excavator. The thumb does not seem to have the holding power I think it should. From what I was told the thumb was put on at… read more
catmastertech
Technician
Vocational, Technical or Trade Scho
4,196 satisfied customers
his 2000.. 320 cat excavator to john deere controls can you help?
my name is XXXXX XXXXX run a excavating company just yesterday i purchest all of the equipment from a retiered man that only ran cat,,, would like to change his 2000.. 320 cat excavator to john deere … read more
catmastertech
Technician
Vocational, Technical or Trade Scho
4,196 satisfied customers
Volvo: Ec..a hydraulic thumb on it cant get the cylinder..stick
I have a volvo Ec 25 mini trackhoe just put a hydraulic thumb on it cant get the cylinder to operate both ways it will either open or close but not both i need to know what to do to make it have push … read more
Erik Bowers
Rental Store Owner and Operator
4 years of college
98 satisfied customers
Technical service bulletins, recalls, reliability, manuals etc
Hello, I'd like follow-up quality, technical service bulletins, recalls, reliability, manuals etc. documentation on the following hydraulic excavators: 2004-07 Case CX330 Hydraulic excavator 2004-07 C… read more
catmastertech
Technician
Vocational, Technical or Trade Scho
4,196 satisfied customers
Excavator..sputters,stalls and starts right back up.Has new filter,is
I have a cat 307 excavator that has recently started stalling.Acts like it is starving for fuel,sputters,stalls and starts right back up.Has new filter,is there more than one?Primary pump going?where … read more
Tim
Foreman
Associate Degree
338 satisfied customers
Commands: that is locked in the positive position (down position)
cat cr303 with a thumb that is locked in the positive position (down position). does not respond to commands and is on pump with pressure. what should i do? this is a mini excavator. please send respo… read more
Tim
Foreman
Associate Degree
338 satisfied customers
I BOUGHT A CAT 307 EXCAVATOR LAST FALL. IT HAS A SERIAL NUMBER
I BOUGHT A CAT 307 EXCAVATOR LAST FALL. IT HAS A SERIAL NUMBER THAT STARTS WITH 9ZL015. THE CAT DEALER TELLS ME THAT IT IS AN INVALID NUMBER. I NEED A MANUAL FOR IT. THE MACHINE WORKS FINE WITH THE EX… read more
Tim
Foreman
Associate Degree
338 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.
...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:
I would (and have) recommend your site to others I was quite satisfied with the quality of the information received, the professional with whom I interacted, and the quick response time. Thanks, and be sure that I'll be back whenever I need a question answered in a hurry.
Elm City, NC
used your service this weekend with "Trecers" help. thank you ,thank you, thank you. replaced an A/C fan motor. Local Auto Zone had part. $15.00 "tracer" fee and $40.00 for parts, I saved several hundreds of dollers at a shop. i will recommend you and use you in the future.
Richmond, TX
9 dollars, 2 hours of my time, and I drove away. Your diagnosis was right on the mark. Thank you so much.
Marysville, CA
Lurch. Thank you very much. I had real doubts about this website but your promptness of response, quick followup and to the point answer with picture was incredible.
Walnut Creek, CA
As a single woman, I really appreciate an excellent and affordable opinion.
Charleston, WV
Thank you Geordie, I will not hesitate to contact justanswer in the future!
Another great insight to what may be the problem. I will have my mechanic take a look at it tomorrow. Thanks again, Frank...you do indeed know your stuff.
Castleberry, FL
Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.
Freshfield, Liverpool, UK
< Previous | Next >
Meet the Experts:
Chris (aka - Moose)
Technician
133 satisfied customers
24 years of experience diagnosing & repairing
Tim
Foreman
338 satisfied customers
23 Years Heavy Equipment and Truck Repairs Shop and Field in the Minning and Construction Industry
Cat Man
Caterpillar Engine Expert
3,777 satisfied customers
23 Years Caterpillar Engine experience.
Wayne
Journeyman
3,308 satisfied customers
34 years experiance as engine rebuild and problems.Thermo-King repair and trouble shooting.
Curtis B.
service manager
2,404 satisfied customers
30 years exp. with diesel engines, heavy equipment and forklifts, including lp forklifts
DR.Cummins
FIELD SERVICE TECHNICIAN
2,392 satisfied customers
16 Years working on Cummins Diesel engines,
Don
Mechanic
553 satisfied customers
35 years experience journeyman mechanic transport truck and trailer including off road equipment
< 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.
