BAR-RETAINING 8T2856 - Caterpillar

Introduction
For Specifications with illustrations make reference to the SPECIFICATIONS FOR 815 & 816 COMPACTOR STEERING SYSTEM, Form No. SENR7527. If the Specifications in Form SENR7527 are not the same as listed in the System Operation and the Testing and Adjusting, look at the printing date on the back cover of each book. Use the Specifications listed in the book with the latest date.Steering Hydraulic System
STEERING SYSTEM SCHEMATIC 1. Hydraulic pump (large section for steering.2. Right steering cylinder.3. Left steering cylinder.4. Hydraulic tank.5. Implement control valve.6. Filter.7. Steering control valve.The steering hydraulic system is a variable flow modulated system. The modulated steering gives the operator good control for a slow turn. This is necessary when the machine operates either in a tight area or at faster speeds. With this system, the operator can also make fast turns when necessary.The main components of the steering system are the hydraulic pump (1) steering control valve (7) and steering cylinders (2) and (3).The hydraulic pump is a two-section pump; a small section for the implement system and a large section for the steering system.The valve spool for the steering control valve is connected to the steering wheel by linkage. When the steering wheel is turned, the valve spool moves. This lets oil from the pump go to the steering cylinders.Steering Control Valve
Neutral Position
STEERING CONTROL VALVE IN NEUTRAL POSITION 1. Tank return passage.2.