 | |
| Illustration 1 | g01591895 |
The Side of Machine With Rear Access Door opened. (1) Conveyor motor (2) Planetary assembly (3) Conveyor drive chain (4) Tension adjustment bolt | |
Conveyor motor (1) is located near the rear bulkhead. The left side of the machine is equipped with a conveyor motor, and the right side of the machine is equipped with a conveyor motor. The conveyor motors are identical. The rear doors on either side of the machine provide access to the conveyor motors.
Conveyor motor (1) is a piston-type motor that is fixed displacement. The right motor is shown. The output shaft of the motor is splined to planetary assembly (2). The planetary assembly drives chain (3) which drives the conveyor. Tension adjustment bolt (4) can be used to adjust chain tension. The conveyor motor has a displacement of 44 cc (2.7 in3) per revolution.
 | |
| Illustration 2 | g01591914 |
Rear of Machine (5) Left auger motor (6) Left planetary assembly (7) Left tension adjustment bolt | |
Left auger motor (5) and the right auger motor are mounted to the rear of the tractor. These motors are identical.
Auger motors (5) are piston-type motors that are fixed displacement. The left motor is shown. The output shaft of each motor is splined to planetary assembly (6). The left planetary assembly is shown. The planetary assemblies drive a chain which drives the augers.
The auger drive chain is located inside a box. Tension adjustment bolts (7) can be used to adjust chain tension. The left adjustment bolts are shown.
The conveyor and auger motors are both fixed displacement, piston-type motors. The auger motor has a displacement of 35 cc (2.1 in3) per revolution.
 | |
| Illustration 3 | g01591934 |
Rotating Group (8) Cylinder block (9) Piston (10) Slipper pads (11) Swashplate (12) Output shaft (13) Valve plate | |
Note: The material feed motors do not have a flushing valve. Instead, some oil is bled from the reverse circuit into the motor case drain.
When an auger or a conveyor is operating, supply oil from the corresponding pump enters the motor. Supply oil is directed to the inlet port of the valve plate. The valve plate directs oil into the piston chamber in the cylinder block. This pressure forces the pistons which are aligned with the inlet port to move out of the cylinder block.
As the pistons are forced out of the cylinder block, the slipper pads slide along the swashplate. This causes the cylinder block and pistons to rotate. Since the cylinder block is splined to the output shaft, the output shaft also rotates.
As the cylinder block rotates, pistons align with the outlet port in the valve plate, and rotation of the cylinder block forces oil out of the piston chambers and into the low pressure side of the hydrostatic loop. Low pressure oil is returned to the inlet side of the hydraulic pump. This completes the hydrostatic circuit.