BEARING- 5364198 - Caterpillar

Illustration 1 g00552346
Steering motor (1) Pivot pin (2) Pistons (seven) (3) Case drain port (4) Barrel (5) Port plate (6) Case (7) Head (8) Passage (lubricating oil for the pivot pin) (9) Retaining plate (10) Shaft (11) Bearing (12) Ring (13) Bearing (14) Shims (15) Snap ring and shims (16) CoverThe steering motor is attached to the main frame below the operator's station.The steering motor is a fixed displacement bent axis motor of the piston type. The steering motor is operated by pressure oil from the variable displacement piston pump. The steering motor can produce the same amount of output torque in either direction.Oil flow through the steering motor can be in either direction. A change in the direction of oil flow changes the direction of rotation for barrel (4), for pistons (2), and for shaft (10) .The following components are the parts of the motor that turn: shaft (10), snap ring and shims (15), retaining plate (9), pistons (2) and barrel (4). The parts that do not turn are the following components: head (7), case (6), port plate (5), shims (14), ring (12) and cover (16) .Oil from the pump flows to the steering motor through the steering control valve and through the pressure control valve. Then, oil flows through the inlet control slot in head (7) to the inlet control slot in port plate (5) .Note: The direction of the turn determines of the two slots in head (7) which is the inlet or the outlet. Likewise, the direction of the turn determines of the two slots in port plate (5) which is the inlet or the outlet.Oil through port plate (5) flows into the cylinders of barrel (4) that are over the inlet control slot of port plate (5) .The cylindrical heads of pistons (2) are held in sockets in shaft (10) by retaining plate (9). The sealed end of pistons (2) are positioned in barrel (4). Barrel (4) rotates around pivot pin (1), which is at a fixed angle of 40 degrees to the axis of shaft (10). Because the steering motor is a bent axis type motor, seven pistons (2) move in and out of the cylinders as pressure oil leaves the cylinders and as pressure oil enters the cylinders. This in and out motion forces the pistons to rotate around pivot pin (1). Shaft (10) and barrel (4) are rotated by the rotation of the pistons.As shaft (10), pistons (2), and barrel (4) continue rotation, the pistons reach the top center (full retracted position). At the same time, the cylinder begins to overlap the outlet control slot in port plate (5). The piston begins to move downward. Because the piston moves downward, the piston pushes oil out of the cylinder, into the outlet control slot in port plate (5), and through the outlet control slot in head (7). Also, the same oil is pushed to the pressure control valve, to the steering control valve, and to the tank. The ball head of pivot