Bleeding the Power Brakes

CAUTION: Always follow precisely the steps described here. This is the only way to ensure that the tractor's brakes are bled properly.

NOTE: The oil must NOT be in a foamy condition when the brakes are bled. For this reason, do not bleed the brakes after driving at speed, performing work with the tractor's hydraulics or carrying out hydraulic tests. If necessary, park the tractor and wait one hour to allow the oil to settle.

Bleeding points:

• Without trailer brake:

  a. Left rear brake
  b. Right rear brake
  

• With hydraulic trailer brake:

  a. Left rear brake
  b. Trailer brake valve
  

• With air brake system:

  a. Trailer control valve, rear bleed screw
  b. Trailer control valve, front bleed screw
  

• With air brake system and FWD with brake:

  a. Left front brake
  b. Right front brake
  c. Trailer control valve, bleed screw
  d. Left rear brake
  

• With hydraulic trailer brake and FWD with brake:

  a. Left front brake
  b. Right front brake
  c. Left rear brake
  d. Trailer brake valve
  

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1. With the engine running, turn the steering wheel slowly and evenly two or three times from left full lock to right full lock and back again. This fills the brake valve housing via the steering valve return line. Shut off the engine.

2. As shown in the relevant illustration, slide two transparent bleed tubes over the appropriate bleed screws. Place the other ends of the two bleed tubes in the oil filler neck.

3. Open the bleed screws by half a turn.

4. Start the engine.

5. Brake pedals must be coupled together. Apply gentle pressure to the brake pedals and hold them in this position until the fluid escaping from the bleed screws is free of air bubbles.

6. Then depress the pedals briefly and release. Repeat this a few times. This should flush out any air bubbles left in the fluid.

7. If necessary, repeat point 5.

8. Hold the pedals in the depressed position and close the bleed screws.

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9.

IMPORTANT: If pedal does sink noticeably after resistance has been reached, leaks in the brake system may be the cause.

Shut off the engine and actuate the brake pedals several times each (separately!) with the engine shut off. This bleeds the last of the air out of the brake valve. There must be perceptible (increasing) resistance before each pedal reaches its limit of travel.

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