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Deer 644B loader want drive

Discussion in 'Wheel Loaders' started by chris allen, Jun 2, 2022.

  1. chris allen

    chris allen Senior Member

    Joined:
    Feb 11, 2014
    Messages:
    353
    Occupation:
    Feild tech
    Location:
    georgia
    Hey guys , dealing with another dinosaur here, serial number is 209246. Well the loader had been sitting up threw the winter , we got it out an ran it for a wk an did well for its age. Well later in the day it had got to we’re it didn’t wanta drive. Like it try’s to pull but nuthin. I checked fluids an level,changed the trains filter an the charge filter, both looked clean an oil smelt fine, all the hydraulics still work so I know it’s not in the drive line, would of been nice to of been able to get the strainer out but deer though it would be funny to make it impossible! Was hopeing someone on here is familiar with this loader or has a service manual on a computer, looks to be a simple Alison trains. One reverse an a low an high forward, Shift cable isn’t broken cause I can see the shift spool moveing, Did notice there were trains test ports on the valve body, Hopefully someone can help me identify witch is witch an what kinda press we should see. Thx
     
  2. mg2361

    mg2361 Senior Member

    Joined:
    Jul 5, 2016
    Messages:
    3,611
    Occupation:
    Equipment Mechanic/Technician
    Location:
    Pennsylvania
    Under your left leg below the seat should be a knob that you can pull in or out. If it is pulled out, try pushing it in to see if that changes anything.
     
    BigWrench55 likes this.
  3. chris allen

    chris allen Senior Member

    Joined:
    Feb 11, 2014
    Messages:
    353
    Occupation:
    Feild tech
    Location:
    georgia
    Already tryed that.