KIT- 5295961 - Caterpillar

Illustration 1 g01419190
This Location is Under the Machine Behind the Hydraulic Tank. (1) Axle hydraulic motor (2) Flushing valve (3) Shift valve lineThe axle motor is located under the machine on the front side of the axle. This motor is a piston motor with two speeds. The axle motor drives the axle through a planetary gear reducer. The axle is equipped with two parking brakes. One parking brake is located on either side of the differential.When the machine is in the high speed range, the shift solenoid is energized, and charge oil enters the axle motor through shift valve line (3). In the high speed range, the propulsion motor operates at the minimum angle.Flushing valve block (2) is identical to the flushing valve block which is used on the drum motor.The axle housing drain line (not shown) directs oil from the axle motor housing to the return manifold.
Illustration 2 g01419199
Axle Motor (Forward, Low Speed) (4) Piston (5) Barrel Assembly (6) Minimum displacement limiter (7) Flushing relief valve (8) Flushing spool (9) Check valve (10) Control spool (11) Shift port (12) Flushing block (13) Rod (14) Actuator Piston (15) Control spool (16) Control plate (17) Maximum displacement limiterThe axle motor has a bent axis. The speed of this type of motor shifts when the bend angle of the motor is changed. The motor can be operated against either the minimum displacement limiter or the maximum displacement limiter. The minimum displacement limiter or the maximum displacement limiter can be adjusted in order to control the minimum and maximum motor speeds.When the supply pump is generating flow, supply oil enters the motor. Supply oil is directed to the inlet port of the control plate. The control plate directs oil into the piston chamber in the barrel assembly. 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 barrel assembly, the barrel assembly and pistons rotate. Since the pistons are connected to the output shaft, the output shaft also rotates. As the barrel assembly rotates, pistons align with the outlet port in the control plate. The rotation of the barrel assembly forces oil out of the piston chambers and into the low pressure side of the hydrostatic loop. The low pressure oil then returns to the inlet side of the hydraulic pump, which completes the hydrostatic circuit.With the hydraulic system in the LOW SPEED condition, the shift port is connected to the tank. The springs of the control spool move the spool. In this condition, the control spool directs oil from the high pressure circuit to the top of the actuator piston. This action shifts the actuator piston downward and this action shifts the control plate downward. The bottom of the actuator piston is vented to the motor case.Note: In order to shift the motor to the HIGH SPEED condition, charge oil is routed to the shift port. Charge oil then shifts the control spool against the spring