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Constant Running Hydraulic Pump - Installation Guide 15
Figure 7: CR pump connections to a Type 100/300 course computer
Mechanical steering
If you are fitting the pump to a boat with mechanical steering you will
need to connect it to a secondary steering ram, along with a solenoid-
operated bypass valve (part no. M81167). The bypass valve allows
you to switch between autopilot course control and manual steering.
To fit to a mechanical steering system:
1. Use suitable hydraulic pipes to connect the pump to the secondary
steering ram and a suitable reservoir.
2. Install the solenoid-operated bypass valve across these pipes (as
shown in Figure 8).
3. Connect the bypass valve to:
• the
CLUTCH terminals on the course computer (Type 150/400
course computer), or
• the
BYPASS terminals on the CR interface (Type 100/300
course computer
Note: Follow the manufacturer’s instructions for mounting the
hydraulic ram.
Supply
Circuit breaker
Type CR
interface unit
To bypass
valve (if
required)
12 V - 25 A
24 V - 10 A
Solenoid 'A' cable
Motor supply
CR1 (12 V) – 50 A
CR1 (24 V) – 30 A
CR2 (12 V) – 70 A
CR2 (24 V) – 40 A
D5164-2
Course computer
Solenoid 'B' cable
MOTOR
POWER
CLUTCH
Course computer
connections:
Fuse
+ –
+ – + –
+ –
BYPASS
VALVE
BATTERY
A B
SOLENOIDS
+
–
+
–
M1 M2
SUPPLY
CLUTCH
1
2
3
4
5
1
2
3
4
5