Hydraulic pressure insufficient

If the hydraulic pressure is permanently too low, carry out the following checks:

• Check oil level in the hydraulic tank.
  
• Check the hydraulic selector unit for leaks.
  Note: The oil can also exit into the gearbox without this being visible from the outside.
  
• Check the oil lines for leaks.
  
• Check the hydraulic pump (see 'Hydraulic pump').