Page 1 of 2 12 LastLast
Results 1 to 10 of 11
  1. #1
    Platinum Member sawtooth's Avatar
    Join Date
    Sep 2007
    Posts
    508

    Default 461 overheating

    I have a 461 that slowly overheats when bush hogging grass. Takes about 15 minutes to do so. 6ft cutter, radiator is clean and full. New water pump supposedly installed. Any ideas? I hate to take to dealer but no idea how to proceed.

    Thanks

  2. #2
    Platinum Member MFRED's Avatar
    Join Date
    Mar 2006
    Posts
    926
    Location
    Connecticut
    Tractor
    MF 5435, MF 165

    Default Re: 461 overheating

    Have you actually washed the fins on the radiator? Just blowing through with compressed air will get the big stuff but leave the fines. I usually wash through the radiator (with the machine cool) with a simple garden hose with my thumb over the end. If there is some oil or something mixed in I may add some simple green or another cleaner too.
    Also. are you certain the thermostat is opening? That tractor shouldn't have any issues with a 6ft cutter.

  3. #3
    Veteran Member Jerry/MT's Avatar
    Join Date
    Feb 2008
    Posts
    2,028
    Location
    Western Montana
    Tractor
    New Holland TD95D, Ford 4610 & Ferguson TO-30

    Default Re: 461 overheating

    Quote Originally Posted by sawtooth View Post
    I have a 461 that slowly overheats when bush hogging grass. Takes about 15 minutes to do so. 6ft cutter, radiator is clean and full. New water pump supposedly installed. Any ideas? I hate to take to dealer but no idea how to proceed.

    Thanks
    Besides the other comments, make sure the air filter is not clogged, check the water pump belt for tightness, make sure you have the correct pressure cap on the radiator. Check to make sure the lower hose isn't collapsing at high rpm. look for continuous bubbles in the coolant indicating a blown headgasket.

  4. #4
    Platinum Member sawtooth's Avatar
    Join Date
    Sep 2007
    Posts
    508

    Default

    Great info guys. Yes the radiator is very clean. It has been washed and you can see through it easily with a light. Everything is fully open. So how do i check for bubbles? I cant open it when hot right? I will check all the other stuff too. Thanks

  5. #5
    Platinum Member MFRED's Avatar
    Join Date
    Mar 2006
    Posts
    926
    Location
    Connecticut
    Tractor
    MF 5435, MF 165

    Default Re: 461 overheating

    You can leave the cap loose or off & get it up to temp. How many hours are on your machine? If I remember right the water pump is gear driven and you can't really see it right? Have you checked to be sure it isn't a faulty guage?

  6. #6
    Platinum Member sawtooth's Avatar
    Join Date
    Sep 2007
    Posts
    508

    Default

    Quote Originally Posted by MFRED View Post
    You can leave the cap loose or off & get it up to temp. How many hours are on your machine? If I remember right the water pump is gear driven and you can't really see it right? Have you checked to be sure it isn't a faulty guage?
    It has 400 hours on it. I cant see it but really not sure what to look for

  7. #7
    Platinum Member MFRED's Avatar
    Join Date
    Mar 2006
    Posts
    926
    Location
    Connecticut
    Tractor
    MF 5435, MF 165

    Default Re: 461 overheating

    Ok , I ckecked and the water pump is gear driven and you can't see it. Well not enough to inspect any way. Do you have a cooling system pressure tester? I use that to determine leaks, head gaskets and such. You can put it on in place of the cap & read pressure build up & pressure drop. Was the water pump changed to correct this issue or did it appear after? Have you owned the machine for a while?
    If all the basics have been checked: fan isn't damaged & is turning easy, coolant is the proper type and level, radiator is clean and free of debris, grille screens are clean, oil level is correct, load isn't too large for machine (6ft cutter isn't), coolant guage is functioning properly, coolant system is clean, thermostat is functioning properly.

    That's where I would start. If all those check out, it may be time to check in more depth.

    -Was the timing changed when the water pump was installed? The injection pump is right behind the water pump. If the guy didn't know what he was doing it could have been altered.
    -Head gasket issues? Was the machine run hot enough to fail a component?

    At 400 hours this tractor is still just getting broken in. I'm surprised to hear of a water pump replacement.

  8. #8
    Silver Member
    Join Date
    Dec 2012
    Posts
    226
    Location
    Texas
    Tractor
    Deere 5055E

    Default Re: 461 overheating

    If the rest of the cooling system is checking out and you have a access to a thermal camera or ir temp gun I would check out the rad closer. It could be plugged up and not exchanging the coolant like it should. Usually easy enough to pull and taken to a rad shop to be dipped

    Brett

  9. #9
    Elite Member
    Join Date
    Apr 2012
    Posts
    4,110
    Location
    Middle Tennessee
    Tractor
    My tractor is an old MF

    Default

    Quote Originally Posted by sawtooth View Post
    I have a 461 that slowly overheats when bush hogging grass. Takes about 15 minutes to do so. 6ft cutter, radiator is clean and full. New water pump supposedly installed. Any ideas? I hate to take to dealer but no idea how to proceed.

    Thanks
    All of the above is good advice, but have you actually checked the water flow in the radiator? Looked inside for any whitish looking buildup. Fan belt tight? Bushing requires going slow. You might try a lower gear to keep you RPM's higher to see it it keeps it cooler. High brush limits airflow thru the radiator. Poor circulation will show up under those conditions. It the tractor temp lowers in open field and moving a bit faster, then it sounds like a circulation problem. Hard water is a radiators worse enemy. If all the above checks out, if it where me I'd look into removing the radiator taking it and have it properly cleaned. DIY cleaning kits are great for moderate to low contamination. A rad shop can check for leaks, pressure and give it a like new cleaning. Then only use a premium coolant/antifreeze with distiller water mix.

    Message posted with TractorByNet v1.6.2 for iPad

  10. #10
    Platinum Member sawtooth's Avatar
    Join Date
    Sep 2007
    Posts
    508

    Default

    I know this is a old post of mine but wanted to update it in case someone had same issue. Basically i bought this tractor used with 400 hours and at a very good price as the original owner had it overheat a couple times and didn't find the issue. I think he just got frustrated and wanted a new Mahindra to be honest. Anyway I to had some problems and even my dealer thought it just needed the radiator cleaned but to no avail. The dealer is 30 min away and i had other tractors so basically let it sit for a while. Then this weekend it was raining so I tore into it. Just as some others had mentioned it was a bad thermostat. Believe it or not it was totally destroyed. Apparently MF got the bright idea to save money and make it out of plastic. Well the plastic had broken and the metal valve section fell down into the top of the engine. I fished all the pieces out and put a new in place. Apparently MF figured out the issue as the new one was ALL metal. At this point I'm surprised that no one, including the original owner, checked for this. Oh well she runs great now and is back in production.

    -image-3488679951-jpg

Page 1 of 2 12 LastLast

Similar Threads

  1. massey 461 first review
    By sawtooth in forum Massey Ferguson Owning/Operating
    Replies: 23
    Last Post: 07-21-2013, 06:41 PM
  2. MF 461 overheating
    By sawtooth in forum Massey Ferguson Owning/Operating
    Replies: 6
    Last Post: 08-16-2012, 08:21 AM
  3. New Holland 461 Haybine
    By Dan Burgdorf in forum New Holland Owning/Operating
    Replies: 1
    Last Post: 03-28-2010, 10:21 PM
  4. 451 vs 461
    By Poncho in forum Massey Ferguson Owning/Operating
    Replies: 6
    Last Post: 03-02-2006, 07:40 PM
  5. Price Check 461 or 471 pricing
    By threeman in forum Massey Ferguson Buying/Pricing
    Replies: 2
    Last Post: 08-04-2005, 02:34 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
© 2014 TractorByNet.com. TractorByNet is a registered trademark of IMC Digital Universe, Inc. Other trademarks on this page are the property of their respective owners.