 | |
| Illustration 1 | g01327567 |
Left side of the motor for the auger (1) Crossover relief valve (2) Adjustment screw for shift pressure of the auger (3) Adjustment screw for motor speed (4) Control valve (5) Piston motor (auger) | |
Piston motor (5) is located on top of the support bracket on the scraper bowl.
 | |
| Illustration 2 | g01327596 |
Right side of the motor for the auger (6) Adjustment screw for motor speed (7) Crossover relief valve | |
Motor (5) is a variable displacement bent axis motor. Motor manifold (4) has two crossover relief valves for the forward operation. Crossover relief valve (1) and crossover relief valve (7) will vent oil from the forward circuit to the reverse circuit if the auger is stalled by an obstruction. Motor (5) has an adjustment screw (2) that controls the shift point of the motor. Motor (5) has an adjustment screw (6) that controls the speed of the motor. Control valve (4) contains a servo piston which moves the swashplate in motor (5) when system pressure increases or system pressure decreases. Adjustment screw (2) controls the charge valve for the system pressure setting.
 | |
| Illustration 3 | g01327773 |
High speed and low torque (2) Adjustment screw for the stroke (3) Adjustment screw for motor speed (5) Piston motor (auger) (6) Adjustment screw for motor speed (8) Swashplate (9) Piston | |
Motor (5) has two different operating conditions. Motor (5) has a combined condition that is both high speed and low torque. Motor (5) has a combined condition that is both low speed and high torque. Adjustment screw (6) is used to set the speed of motor (5). Turning the adjustment screw will increase the angle of motor (5). Two conditions will change when the angle of the motor is increased:
- The speed of the motor decreases.
- The torque of the motor increases.
When the system pressure is at a minimum, the servo piston holds swashplate (8) against adjustment screw (6). Motor (5) is at a condition that is both high speed and low torque.
 | |
| Illustration 4 | g01327603 |
Low speed and high torque (2) Adjustment screw for the stroke (3) Adjustment screw for motor speed (5) Piston motor (auger) (6) Adjustment screw for motor speed (8) Swashplate (9) Piston | |
When the system pressure increases, the charge valve moves against the force of the spring. Oil is directed through the internal passage to the top side of the servo piston. Pressurized oil shifts the servo piston in order to move swashplate (8). Motor (5) will upstroke in the position when the system pressure increases. The servo piston will move swashplate (8) against adjustment screw (3). As the motor upstrokes, less pressure is required to turn the auger. This is due to an increase in torque.
Adjustment screw (2) will set the pressure that is required in order to shift the motor. The pressure will lower when the adjustment screw is turned inward.