Coolant leak on 5075M
Results 1 to 3 of 3
Like Tree2Likes
  • 2 Post By jd110

Thread: Coolant leak on 5075M

  1. Top | #1

    Join Date
    Aug 2018
    Last Online
    08-05-2018 @ 09:31 AM
    Thanked 0 Times in 0 Posts

    Coolant leak on 5075M

    Hi all, thanks for the forum!

    I just bought a JD 5075M with the 5 cylinder 5030 Turbo engine. I have a coolant leak coming from somewhere near the thermostat housing, that I'm having a hard time with. I have tightened the hose clamp, and even added a second clamp on the upper rad hose where is meets the thermostat change. Also, there is about a 3/4" very course threaded hole on the front of the motor just under the pulley on the thermostat housing. I have coolant that is leaking from there as well. I don't know what this hole is for....?

    Thanks for your input.

  2. Remove Advertisements

  3. Top | #2
    JROC's Avatar
    Join Date
    Apr 2018
    Last Online
    11-09-2019 @ 11:09 AM
    South Carolina
    Thanked 16 Times in 14 Posts
    Do you have any good pictures of the effected area where the leak is, and the hole you're referring to? I don't have and experience with a 5 cylinder John Deere, but maybe a few good pictures can help tell someone on here something to help you out with.

    You don't see any cracks where the coolant holes connects to the thermostat housing do you? They're often very fine and hard to see without close examination. Obviously not a tractor, but I once had the thermostat housing on my old 1999 Mustang GT develop a hairline crack running down it. Unfortunately its thermostat housing was molded into the intake manifold so I had to buy a new intake to fix it. Lol
    Last edited by JROC; 08-10-2018 at 07:18 PM.

  4. Top | #3

    Join Date
    Jan 2011
    Last Online
    11-09-2019 @ 06:07 AM
    Thanked 315 Times in 240 Posts
    Sounds like you have a timing cover leaking. The original ones were sealed with sealant and sometimes leaked. There is now a paper gasket to take the place of the sealant. There is also a brass shim added on the top portion of the timing cover between a rubber gasket and the cylinder head. The timing cover is a time consuming repair. The oil pan needs to come off and the governor and oil pump are mounted to the timing cover. I don't recommend tackling it yourself unless you are very mechanically inclined. THe threaded hole you see is unused in this application. Some applications mount a fan bearing there.
    DRobinson and arlen like this.

  5. The Following 2 Users Say Thank You to jd110 For This Useful Post:

    2mtrucks (08-10-2018), Zebrafive (08-11-2018)

  6. Remove Advertisements


Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts