INSULATION 2179253 - Caterpillar

Illustration 1 g01218948
Steering System Components (1) Hydraulic tank filter (2) Hydraulic tank (3) Servo cylinder (4) Steering cylinder (5) Implement pump section of hydraulic pump (6) Steering pump section of hydraulic pump (7) Check valves (8) Filter (9) Check and relief valve for the steering cylinders (10) Steering control valve (11) Secondary steering pump (12) Check valve for the metering pump (13) Metering pump (steering)The system can be divided into two parts:
The servo pilot system
The steering systemThe servo pilot system controls the movement of the valve spool in steering control valve (10). The servo pilot system includes the following components:
Servo cylinder (3)
Check and relief valve (9)
Metering pump (13)
Illustration 2 g01218702
Located above front differential case (9) Check and relief valve for the steering cylinders (10) Steering control valvePump oil from steering control valve (10) is always available at metering pump (13). The metering pump is a metering pump and a directional pump. The metering pump sends pilot oil through check and relief valve (9) when the steering wheel is rotated. Then, the oil flows to the steering control valve.
Illustration 3 g01218716
Top of the Cushion-Hitch (3) Servo cylinderServo cylinder (3) hydraulically feels the movement of the articulation. When the steering wheel is turned and the machine starts to turn, the displaced oil from the servo cylinder balances the oil that is flowing through metering pump (13). When the steering wheel is stopped, the displaced oil from the servo cylinder flows to steering control valve (10). The steering control valve spool moves stopping the turn at the desired time. The servo cylinder also feels steering movement when an outside force turns the machine. The displaced oil from the servo cylinder flows to the steering control valve. The steering control valve spool moves in order to make a steering correction.Check and relief valve (9) will perform the following tasks:
Supply makeup oil to the servo pilot system.
Protect the system from high pressures.
Provide a system without the servo in the event of a failure.
Illustration 4 g01219077
Implement and Steering Pump at the Rear of the Tractor (5) Implement pump section (6) Steering pump section
Illustration 5 g00772463
Rear of the Tractor, Front of the Scraper (4) Steering cylindersThe steering system consists of the following components:
Hydraulic tank (2)
Steering cylinders (4)
Steering pump section (6)
Filter (8)
Steering control valve (10) The oil for the steering system is sent from steering pump section (6) through filter (8). The oil is sent through steering control valve (10). Part of the flow goes through the steering control valve and into check and relief valve (9). This oil flow charges the servo pilot system. The oil flow also supplies makeup oil for the servo pilot system.The oil in the servo pilot system moves the valve spool in steering control valve (10) to the left turn position or the right turn position. The oil from pump section (6) will flow to steering cylinders (4). The flow of this oil in steering cylinders (4) will cause the machine to turn.
Illustration 6 g01218739
Located underneath operator compartment (12) Check valve (13) Metering pump (steering)Note: Metering