1. Thank you for visiting HeavyEquipmentForums.com! Our objective is to provide industry professionals a place to gather to exchange questions, answers and ideas. We welcome you to register using the "Register" icon at the top of the page. We'd appreciate any help you can offer in spreading the word of our new site. The more members that join, the bigger resource for all to enjoy. Thank you!
  2. ALL NEW MEMBERS READ THIS FIRST!! Thank you for joining Heavy Equipment Forums! If you are new to forums we communicate with "Threads", please search our threads to see if your topic may have already been answered and if not then click "Post New Thread" in the appropriate forum. This will allow all of our members to see your question and give you the best chance to be answered. After you've made a number of posts you will graduate to Full Member status where you'll see a few more privileges. Following these guidelines will help make this the best resource for heavy equipment on the net. Thanks for joining us and I hope you enjoy your stay!!

Slow movin Michigan Loader

Discussion in 'Wheel Loaders' started by Tom Spivak, Nov 22, 2007.

  1. Komatsu 150

    Komatsu 150 Senior Member

    Joined:
    Aug 17, 2007
    Messages:
    672
    Location:
    Northern Illinois
    I don't know about 55's in particular. Just assuming the transmissions are like the 75 they are supposed to be checked at idle. If filled to check plug with engine off they will be very low on oil when running. The converter housing drains into the transmission when off. This is why the shifter rods leak much more when parked as the oil level rises. If this doesn't apply please ignore.
     
  2. division1

    division1 Member

    Joined:
    Sep 13, 2009
    Messages:
    15
    Location:
    ohio
    i have a 125a loader wont move wen you start it takes a min to gointo gear. Help?
     
  3. Kiwi Will

    Kiwi Will Active Member

    Joined:
    Aug 8, 2009
    Messages:
    32
    Location:
    New Zealand
    I to have a very slow moving Mich' 75B. I have been reading at this site & thought I'd try some 10w oil added to the trans. No other place was obvious & I really didn't know how to get the oil into the trans but tipped it down a small hose by the LH step up to the cab. It has no cap or dip stick so don't know what the level is or should be. Anyway, after about 3 quarts & she was up and moving.
    My question are;
    1) What should the transmission take in volume of oil?
    2) Is there a dip stick normally fitted?
    3) If I find a dip stick or make one up, does the oil level get checked when engine is running like car?
     
  4. Komatsu 150

    Komatsu 150 Senior Member

    Joined:
    Aug 17, 2007
    Messages:
    672
    Location:
    Northern Illinois
    If the trans works OK after the first minute of waiting then it sounds normal-just their nature. The oil from the bell housing compartment drains into the transmission when the engine is shut off. The oil level on the old machines was checked at the transmission plug with machine running after a waiting period and the oil was added at the bell housing plug slowly until oil came out the trans plug. There used to be cute little decals on the frame telling you this.
     
  5. Komatsu 150

    Komatsu 150 Senior Member

    Joined:
    Aug 17, 2007
    Messages:
    672
    Location:
    Northern Illinois
    Just an additional point. If the oil is level with the transmission plug with engine stopped then you are probably several GALLONS low.
     
  6. division1

    division1 Member

    Joined:
    Sep 13, 2009
    Messages:
    15
    Location:
    ohio
    thank you. i cheacked it running i just serviced trans took off pan and cleaned then cleaned out the screen put it all back togeather and put almost 6 gallans in it when it running if you pull out the pug it slowly comes out. and i also replaced the filter in the lines coming from the radietor. if i use it for a while then let it sit for 10 min it does same thing. but when running it works proper. i was told mabye charge pump?
     
  7. division1

    division1 Member

    Joined:
    Sep 13, 2009
    Messages:
    15
    Location:
    ohio
    i found out i have a early 125a and the charge pump isnt on the back of the converter. do you know were it is i dont want it to leve me stranded on a snowy day. i just changed all filters on trans. and no diffrence it didnt do this before thow. someone told me mabye u could shim a presure regulator??? no idea about that
     
  8. Komatsu 150

    Komatsu 150 Senior Member

    Joined:
    Aug 17, 2007
    Messages:
    672
    Location:
    Northern Illinois
    The regulator is adjustable but you need to check pressures. If it's running OK after a period I can't see the regulator being the problem. I'm not familiar with the 125 in particular. Our machines (75 and 175)have all three pumps on the back of the converter housing if I remember right. Just one pump for all the trans functions-I don't remember a separate charge pump like you see now. The other two pumps were loader and steering.
     

    Attached Files:

  9. Kiwi Will

    Kiwi Will Active Member

    Joined:
    Aug 8, 2009
    Messages:
    32
    Location:
    New Zealand
    Ahhhh!!! Thanks Komatsu.
    Maybe after crawling underneath ol' girl a dozen or so times for each problem, I might (after making enquiries on this here forum) get to know what I am doing. :)
    Does anyone know of a workshop manual either for sale or even better, on the net that can be accessible for a slow brainers like (and of course including) me?
     
  10. division1

    division1 Member

    Joined:
    Sep 13, 2009
    Messages:
    15
    Location:
    ohio
    ya mine is not like the picture. all i have is on pump on the back of the converter. and i have a drivshaft that goes into the trans. im confused. all the lines that go to and from the converter go into the trans. i have fully restored this loader hope it is sompten that can be fixed.....
     
  11. division1

    division1 Member

    Joined:
    Sep 13, 2009
    Messages:
    15
    Location:
    ohio
    my steering pump is run on inline with the belts on the engine also thanks for anyhelp
     
  12. Bigstevex4

    Bigstevex4 Well-Known Member

    Joined:
    Apr 10, 2009
    Messages:
    70
    Location:
    Denver Colorado
    The air you are talking about is declutch if that spool is stuck it will dump clutch psi did you take any pressures clutch conv in and out check stall speeds?
     
  13. Tom Spivak

    Tom Spivak Well-Known Member

    Joined:
    Oct 31, 2007
    Messages:
    56
    Location:
    ontario
    Did'nt know that Komatsu, thanks for that info.
     
  14. division1

    division1 Member

    Joined:
    Sep 13, 2009
    Messages:
    15
    Location:
    ohio
    no. it aleays goes in gear thow. just hopen it not the trans pump!
     
  15. Bigstevex4

    Bigstevex4 Well-Known Member

    Joined:
    Apr 10, 2009
    Messages:
    70
    Location:
    Denver Colorado
    The transmission pump would be a cheap fix.
     
  16. division1

    division1 Member

    Joined:
    Sep 13, 2009
    Messages:
    15
    Location:
    ohio
    any idea how big of a snow box a 125a will push its got the gas 6 cyl
     
  17. John DiMartino

    John DiMartino Super Moderator

    Joined:
    Oct 30, 2003
    Messages:
    94
    Occupation:
    Greenskeeper/mechanic
    Location:
    Walden, NY
    I read this thread with interest,as I have a older 75A. I guess here I thought I had a 75A,but my machine is much larger than the ones pictured here,as well as being articulated.Mines got a 4-71 in it as well.
     
  18. mourafetis

    mourafetis Active Member

    Joined:
    Mar 8, 2010
    Messages:
    38
    Location:
    Greece
    Hello guys,
    I do not know if your questions are still valid, but I may be able to help with most of your transmission problems. If there is still something, just repost ot...
     
    Burnt.Fingers likes this.
  19. oldseabee

    oldseabee Senior Member

    Joined:
    Jan 23, 2010
    Messages:
    529
    Occupation:
    Retired
    Location:
    Milner, Ga.
    Some early 125A torque convertor's had an internal charge pump so the pump on the back of the convertor would then be for the hydraulics. I believe that it was a C-353 or C-404 designation. The transmission was an R400.
     
  20. UnitCrane514

    UnitCrane514 Member

    Joined:
    Jun 27, 2011
    Messages:
    12
    Occupation:
    Machinist
    Location:
    Michigan
    75 B manual

    Minnpar.com has all the 75 series manuals for free but they are PDF downloads.