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Champion 740A " CLUTCH ISSUE "

Discussion in 'Motor Graders' started by Marino77, Nov 27, 2019.

  1. Marino77

    Marino77 New Member

    Joined:
    Mar 10, 2019
    Messages:
    3
    Location:
    Kamloops B.C
    Recently was working this machine and out of nowhere the clutch pedal has no hold back .. meaning rt to the floor doesnt seem to do any different being pumped, lunges slightly forward obviously when put in gear while clutch is pressed down. NO major leaks on clutch master cylinder , new transmission, clutch and slave cylinder ..
    An awful noise at times comes from the clutch master cylinder when the clutch is depressed sounds like to me that possibly a bypass is happening of some sort .. reservoir is topped up and no leaks any ideas would be helpful .

    Thank you RM
     
    Clyde Hathaway likes this.
  2. DB2

    DB2 Senior Member

    Joined:
    Jan 4, 2015
    Messages:
    997
    Location:
    Winnipeg MB Canada
    Was the release bearing changed? Clutch adjusted properly? What Series of 740A are you dealing with?
    I’ve seen the cross shaft break causing problems with clutch disengagement. Not sure what the noise could be. Possibly the hydraulic booster is bypassing ?
     
  3. Andrew Cranley

    Andrew Cranley New Member

    Joined:
    Oct 26, 2022
    Messages:
    2
    Location:
    Homer Alaska
    I am currently having this same issue, without the awful noise. I have narrowed it down to air in the system. the system has been vacuumed multiple times, with some positive outcome. the drive shaft has still yet to come to a complete stop for more than a few seconds though. Is it normal for the upper driveshaft to spin a few revolutions then pause for a second, then repeat ??

    my next move is to back flush from the cylinder to the reservoir. i got this tip from a local TECH

    1994 740A champion road grader. Just installed new transmission and clutch.
     
    Last edited: Oct 26, 2022
    Blue-Fox likes this.