How JustAnswer Works:

  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.

Ask catmastertech Your Own Question

catmastertech
catmastertech, Technician
Category: Heavy Equipment
Satisfied Customers: 1894
Experience:  19 years Cat, 3 years Case
11546476
Type Your Heavy Equipment Question Here...
catmastertech is online now
A new question is answered every 9 seconds

I just bought a cat 518 skidder (old, cable type) and the winch

Customer Question

I just bought a cat 518 skidder (old, cable type) and the winch will spool in, but not out. The winch control lever feels normal when you ask for 'in', but feels like there is no hydraulic pressure when you ask for 'out.' Is there a way to reverse the lines so I can check the control valve for proper operation? Any suggestions for isolating the problem otherwise.
Submitted: 3 years ago.
Category: Heavy Equipment
Expert:  catmastertech replied 3 years ago.

I don't think your winch has a power out mode. Most of the skidders did not.

If I am wrong about this please send me your serial number and I will dig into the model you have. I have some information on winches attached. If you winch is different include the winch model and serial number with your reply. It is stamped on the winch but, I am not sure of the exact location.

518 winch operation.

Customer: replied 3 years ago.
I think you are right. I may have misunderstood the seller when he said it "winched out". I have seen many skidders work and they all 'freewheel' when you pull the main winch cable. The winch and controller look exactly like the info you sent me. I am grateful to have it. Can you suggest as to why the winch would spool in smoothly and not freewheel under a fairly substantial strain. I busted a 6000 lb. rope like it was a shoestring trying to break the spool loose. I am a fair mechanic and this machine seems fairly simple and well designed. I just hate to work on the wrong end of a problem if good advice can start me in the right place. Thanks so much again.

Dave
Expert:  catmastertech replied 3 years ago.

Here is more on the later models, these are usually CAT made winches and were very common in my area.

I would guess your brake release is not working correctly. Check this info and see if it won't help understand this unit.

Winch operation

 

Here is the testing book also.

 

Winch Testing

 

Let me know if this is not correct, the serial number may help if it is not. I will try to find other information.

 

Here is info for the older Gearmatic winch, it has more cast iron in its housing and is rounder shaped.

 

Gearmatic winch testing.

 

Either way you should be covered.

 

 

catmastertech, Technician
Category: Heavy Equipment
Satisfied Customers: 1894
Experience: 19 years Cat, 3 years Case
catmastertech and 3 other Heavy Equipment Specialists are ready to help you
Customer: replied 3 years ago.
Donnie,

The first link you sent me worked really well. I pulled the primary cover on the clutch and brake side and found the brake not working. I traced the problem back to the master control. My neighbor, who is also a fair mechanic, helped me, and we were able to use the three pages you sent us to save several hours of diagnostics. We were able to reverse the lines, release the brake, spool the winch drum out, and, after returning the lines, spool the cable in under power.

I know exactly which parts I need now and will be able to rebuild the hydraulic control system from the winch back. It should be as good as new.

Thanks tons,

Dave
Expert:  catmastertech replied 3 years ago.

Glad to hear that, thanks for the reply.

Let me know if I can help you again.

I did like the simple design of the 518, it only has some tough spots to work on. The rest of the machine is solid as long as it doesn't use wide tires.

Important note: Replace the u-joints every year in the center section or it will fail and damage the transmission housing.

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:

 
 
 
  • 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. Stephanie P Elm City, NC
< Last | Next >
  • 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. Stephanie P 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. David L. Richmond, TX
  • 9 dollars, 2 hours of my time, and I drove away. Your diagnosis was right on the mark. Thank you so much. Phil 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. Charles Walnut Creek, CA
  • As a single woman, I really appreciate an excellent and affordable opinion.
    Thank you Geordie, I will not hesitate to contact justanswer in the future!
    Sue Charleston, WV
  • 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. Jim Castleberry, FL
  • 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
 
 
 

Meet The Experts:

 
 
 
  • Chris (aka - Moose)

    Technician

    Satisfied Customers:

    112
    16 years of experience
< Last | Next >
  • http://ww2.justanswer.com/uploads/MU/muddyford/2012-6-13_1204_1.64x64.png Chris (aka - Moose)'s Avatar

    Chris (aka - Moose)

    Technician

    Satisfied Customers:

    112
    16 years of experience
  • http://ww2.justanswer.com/uploads/Boxerman1969/2009-06-22_213107_ja_avatar.JPG Tim's Avatar

    Tim

    Foreman

    Satisfied Customers:

    338
    23 Years Heavy Equipment and Truck Repairs Shop and Field in the Minning and Construction Industry
  • http://ww2.justanswer.com/uploads/jrwhitey2000/2009-01-03_193237_me.jpg J.R.'s Avatar

    J.R.

    Technician

    Satisfied Customers:

    148
    13 years as warranty technician for Detroit Diesel
  • http://ww2.justanswer.com/uploads/yellowman99/2010-03-20_033822_Marshall_Pete_Furr.jpg Cat Man's Avatar

    Cat Man

    Caterpillar Engine Expert

    Satisfied Customers:

    3706
    23 Years Caterpillar Engine experience.
  • http://ww2.justanswer.com/uploads/WT/wtolkson/2012-6-8_12723_JApicture2012.64x64.jpg Wayne's Avatar

    Wayne

    Journeyman

    Satisfied Customers:

    3017
    34 years experiance as engine rebuild and problems.Thermo-King repair and trouble shooting.
  • http://ww2.justanswer.com/uploads/cumminsdr/2010-7-20_204410_ja.jpg DR.Cummins's Avatar

    DR.Cummins

    FIELD SERVICE TECHNICIAN

    Satisfied Customers:

    2352
    16 Years working on Cummins Diesel engines,
  • http://ww2.justanswer.com/uploads/KO/koboma/2012-6-6_20917_DSCF1022.64x64.JPG Curtis B.'s Avatar

    Curtis B.

    service manager

    Satisfied Customers:

    2226
    30 years exp. with diesel engines, heavy equipment and forklifts, including lp forklifts