Hydraulic Drawbar

Hydraulic Drawbar

An optional hydraulic drawbar has been designed to absorb the shock to the drawbar / share should a large underground object be struck. The internal ram and accumulator system cushion the impact and thus lessen the possibility of damage to the machine.

Hydraulic System Pressure
The drawbar hydraulic system should be pre-charged using the tractor hydraulics as follows:-

Follow the instructions below to pressurise the system:-
- Couple the quick release pressurising hose to the tractor auxiliary hydraulic outlet.
- Open the system lock valve by turning in an anticlockwise direction, Fig 3.10.1.
- Operate the tractor auxiliary system to obtain a pre- charge working pressure shown on the gauge, Fig 3.10.2, of 100 bar (1450 psi).
- Close the lock valve by turning in a clockwise direction.
- Disconnect the quick release pressurising hose from the tractor auxiliary outlet.
The system is now charged and ready for use.

Warning!
Do not use the lock valve to depressurise the system, or at any other time unless the pressure hose is connected to the tractor hydraulic outlet.

Accumulator Pressure
The system accumulator is pre-charged to 117 bar (1700 psi) and requires no maintenance. If a fault develops with the accumulator the operator should notify his ScanStone dealer.