TMQ AP4 Autopilot (AP4S10) 41 of 62 Version 4.96 9/10/2017
General Information - Drive Units
The AP4 autopilot is capable of controlling reversing hydraulic pumps,
mechanical drives, linear hydraulic drive systems, linear mechanical systems,
solenoid valves on constant running pumps and relays
When installing any drive system, refer to the manufacturers’ specifications and
instructions. Follow all instructions.
Installation Considerations
Mechanical Drives
Ensure correct voltage of drive unit
Mount horizontally in a dry position
Ensure robust and stable mounting platform is available
Provide for cable connection to AP4 control unit
Provide access for drive sprocket and chain to be fitted
Provide for cable lay if linear mechanical drive
Check correct sprocket ratio for the boat
Hydraulic Pumps
Check correct pump voltage for boat
Ensure correct flow rate of pump matched for steering
Mount horizontally in a dry position
Pump should be mounted lower then the helm pump
Provide adequate space for hydraulic line connections
Ensure access to existing boat steering lines
A balance line must be connected from autopilot pump reservoir to
helm pump reservoir
Replace any vented bung on pump with non vented
Check if extra lock valve is needed for steering system
When mounted, fill with oil and purge air from system