TM 5-3825-226-24
STEERING HYDRAULIC SYSTEM
STEERING SYSTEM SCHEMATIC
1. Left steering cylinder.
3. Hydraulic tank and filter.
5. Steering control valve.
2. Hydraulic pump (large
4. Right steering cylinder.
6. Control valve spool.
section for steering).
The steering system for the 613B 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 (2), steering control valve (5), and
steering cylinders (1) and (4).
The hydraulic pump is a two-section pump; a small
section for the implement system and a large section for
the steering system. The pressure oil from the pump
flows to the steering control valve.
Spool (6) 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 function will not operate if engine is
stopped.
2-106
