Planning
Installation of the pump consists of:
• Finding a mounting location for the
pump
• Partially draining the steering system
• Mounting and connecting the pump to
the existing steering lines
• Filling and bleeding the steering
system.
A suitable mounting location for the pump
MUST:
•
Be
dry
• Be lower than at least one of the helm
pumps in the steering system
• Provide a solid mounting base
• Be at least 4 feet (3.1 m) from the
vessel’s compass.
A mounting location for the pump SHOULD:
• Provide easy access to the pump
• Provide an easy connection point to
the steering system
• Minimize the length of the pump hoses
• Minimize the length of the wires to the
motor.
A typical mounting location would be in the
engine compartment or the steering console.
The pump can be mounted in any orientation
except with Port C facing downward. If Port
C is facing downward then air will not be able
to rise out of the pump and the pump will not
have a supply of oil.
There are two ways to connect the pump to
the steering system. The first is to leave the
system completely filled and be careful not to
spill hydraulic fluid. The second is to drain
the system of fluid completely before cutting
or opening any lines.
If you follow the first method, remember that
when you disconnect or cut the steering
lines, there will be a constant slow discharge
of oil due to gravity draining the system.
Have a container ready to catch all excess
oil. Do not reuse any oil reclaimed from your
system.
Draining your System
If you wish to follow the second method and
drain the system, use the following simple
procedure.
1. Ha
ve a large container, about 2 gallons,
ready.
2. Disconn
ect the delivery lines at a low
point, usually where the lines connect to
the steering cylinder.
3. Tu
rn the wheel of the highest helm pump
in both directions until no more fluid
comes out of the lines.
4. Repe
at the previous step on each lower
helm pump in turn.
Types of Steering Systems
There are two general types of steering
systems, two-line systems, and three-line
systems. The pump connection to the
steering system is different for each type.
Separate instructions are supplied for both
types of steering systems.
You have a three-line system if the helm pump is a Capilano Model 250 or 275 (Made by
Teleflex), or if there is a Uniflow valve mounted close to the steering cylinder.
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