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  1. Southbus

    Champion 720 accumulator's pressure switch and bleeding.

    Hi cuttin edge first thanks for your interest in helping me, do you mean removing the accumulators or pressure switches? My problem is only with the switch because it has an oil leak, I imagine that this switch has nothing to do with the operation of the accumulator, but apparently it is only...
  2. Southbus

    Champion 720 accumulator's pressure switch and bleeding.

    Hello friends, I need to get the pressure switch that is installed under the accumulators, while I get them I'll put some npt plugs, is there a way to bleed that end of the hydraulic circuit? The part number of switchs is: 44433 Thank you!!! Cesar
    • Southbus
    • Thread
    • accumulator bleeding champion 720 pressure switch
    • Replies: 4
    • Forum: Motor Graders
  3. Southbus

    Wanted Champion 720VHP Grader for sale!

    Hi, I have a Champion 720 from 1988 and I am thinking of renovating it. I would like a 720A series III or 720A VHP, ideally with few or average hours, well maintained and original. I appreciate any information or advice.
  4. Southbus

    Steering wheel and clutch pedal not working in the first engine start of the day.

    I think @Tones is right, today in the morning the problem arose again and while the engine was running I released one of the outputs of the rear hydraulic pump (steering, clutch and transmission pump), and many bubbles escaped, then The hydraulic oil came and at the same time he felt a change in...
  5. Southbus

    Steering wheel and clutch pedal not working in the first engine start of the day.

    Cuttin edge, it no have belt drive.
  6. Southbus

    Steering wheel and clutch pedal not working in the first engine start of the day.

    Hi Welder, Yes!
  7. Southbus

    Steering wheel and clutch pedal not working in the first engine start of the day.

    I forgot to mention that the fault suddenly disappears and the steering and clutch work one hundred percent again. This fault does not occur every day, on some occasions I turn the engine on and the fault does not occur, but on those occasions, just after starting the engine, I hear a noise...
  8. Southbus

    Steering wheel and clutch pedal not working in the first engine start of the day.

    Hello everyone, here I am again looking for help to solve a problem with my Champion 720R year 1988, serial number 720-187-134-19089-88. On some occasions, to turn on the machine I cannot move the steering wheel or press the clutch, both are very hard and I think they have no hydraulic...
  9. Southbus

    Clutch failing on Champion 720, HELP!

    Dear friends, here I am back with the solution to my clutch problems. Indeed my problem was in the clutch master cylinder (it's really a brake master cylinder) I released the three bolts that join it to the booster, here there is only a mechanical exchange and it does not share fluids. I took...
  10. Southbus

    Clutch failing on Champion 720, HELP!

    Dear friends, I have a 1988 Champion 720, it has an 8400 transmission. The clutch is starting to fail :(. Sometimes I press the clutch pedal, it feels soft, I move the selector lever forward or backward and the machine jerks as if I had not pressed the pedal, this happens sometimes and in some...
  11. Southbus

    Cummins 6ct 8.3 Cleaning oil circuit

    Hi Bob, That's right, but water began to flow into the oil through one of the shirts ... the situation depresses me, The lack of experience has given me a good punch, I am on the edge of the ledge...☠ Now all over again, I have taken the opportunity to repair the turbo (it was done by a...
  12. Southbus

    Cummins 6ct 8.3 Cleaning oil circuit

    Hi Folks I am trying to clean the lubrication circuit of an engine, now it is without the cylinder head, without the pistons and without the liners, I have cleaned the entire area and several solids fell on the crankshaft. Taking advantage of the fact that I have also removed the oil cooler, I...
    • Southbus
    • Thread
    • champion 720 cleaning oil system cummins 6ct flow diagram lubricating system
    • Replies: 2
    • Forum: Motor Graders
  13. Southbus

    Champion 720 hydraulic acumulators bleeding

    @Delmer thank you so much for you help!!! Cesar
  14. Southbus

    Champion 720 hydraulic acumulators bleeding

    Please, i need your tips!!! Thank you!
  15. Southbus

    Champion 720 hydraulic acumulators bleeding

    Hello Friend how are you? me in my career to eliminate oil leaks in my Champion 720 year 1988. On this occasion, change the hoses (indicated in red in the attached illustration) that go from the master cylinders or brake valves to the hydraulic accumulators. One of the hoses was leaking oil...
  16. Southbus

    Champion 720 transmission seals replacement

    Bob, I'm going to go to the seal store to find out if they can cross with another brand of seals. That information you send me seems very accurate, where do you get it from? Anyway, I really appreciate the information. Cheers Cesar
  17. Southbus

    Champion 720 transmission seals replacement

    Moderators: please change current title by "Champion 720 transmission seals replacement" Thanks Continuing with my process of eliminating leaks on my 1988 Champion 720 motor grader ... I need to know the equivalences or measurements of the seals of the input shaft and the output shaft of the...
  18. Southbus

    Cummins 6ct 8.3, how to replacement crank front seal

    Dear, the new seal I installed has a white lip, it came with a plastic tube inside that came out back when I installed the gear cover, then I tightened all the cover bolts. I think that maybe I should have affirmed this tube so that it did not come out backwards and thus remain separating the...
  19. Southbus

    Cummins 6ct 8.3, how to replacement crank front seal

    Good Morning! @funwithfuel, The plastic cylinder came out backwards while I was pushing the gear cover and it was fixed on the tip of the crankshaft ... Are you telling me that it shouldn't have come out completely? Cesar
  20. Southbus

    Cummins 6ct 8.3, how to replacement crank front seal

    Hi everybody! Yesterday afternoon, following all your instructions, I managed to change the crankshaft seal. Today I will put new oil in the engine and do the pertinent tests. What is the oil pressure at working temperature for this engine? (Cummins 6ct 8.3 year 1988) @Bluox @funwithfuel...
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