Adjust Counterbalance Valve

The following machine models use a counterbalance valve and must be adjusted:

  • 8030 series wheel tractors (serial number 40,000 -).
  • 8030 series track tractors (serial number 905000 -).
  • 9030 series wheel tractors (serial number 013000 -).
  • 9030 series track tractors (serial number 911000 -).
  • All 7R, 8R, 8RT, 9R, and 9RT series tractors.

  1. NOTE: Flow rates between 11—30 L/min. (3—8 gpm) are recommended.

    If hydraulic flow rate is adjusted, complete SCV threshold calibration test.

    PC18224
    PC18224-UN-06DEC13

    A - Lock Nut

    B - Valve Cartridge

    Adjust hydraulic flow on machine to operators preference, then adjust valve.


  2. Loosen lock nut (A) on valve cartridge.

  3. Turn cartridge (B) clockwise until it stops.

  4. NOTE: If implement is slow to respond, turn cartridge 1/4 turn clockwise.

    Turn cartridge counterclockwise 1/4 turn increments until implement operation is normal.

  5. NOTE: Torque lock nut to 20—25 N·m (15—18 lb.-ft.).

    Tighten lock nut on valve cartridge.

    If acceptable performance is not reached after adjusting valve, adjust hydraulic flow rate on machine then readjust valve.

BA31779,00006D7-19-20131219