Demand for assistance (Valve misaligned) (Steering)

Demand for assistance (Valve misaligned)

When the steering wheel and input shaft is turned, steering resistance transmitted to the worm causes lock for more than 30 seconds in one minute.

• CAUTION: To avoid excessive fluid
• temperatures which could damage the oil
• seals, the steering must not be held on full

the torsion bar to be twisted and the valve ports to be misaligned for a right or left turn. The misalignment of Only when the steering wheel, and hence the demand the valve ports directs all fluid pressure ’A’ to one side for assistance is released, will the torsion bar return of the piston only and allows displaced fluid ’B’ on the the valve to neutral, allowing the fluid to circulate other side. through the reservoir where it is cooled.

When demanding maximum assistance, any In the unlikely event of mechanical failure of the excessive fluid output from the pump due to high torsion bar, a coarse splined connection (7) between pump speed, will circulate through the regulator valve the input shaft and worm, ensures steering control is located in the pump unit, causing the temperature of maintained sufficient to allow the vehicle to be the fluid and the pump to rise rapidly. recovered.

Rotary valve misaligned