SIMRAD PUMP-2 MKII 12vDC Reversible Pump

The PUMP-2 is a reversible hydraulic steering pump for vessels up to 35ft with a cylinder displacement of 80-250 cm3

Optional hose fitting kits are available to assist with your PUMP-2 MKII installation.

A marine autopilot drive unit translates instructions from your autopilot system into movements of your rudder or outboard. The drive unit you’ll need depends on the type of steering system you have and the size of your boat.

There are two main types of drive unit:

Hydraulic steering pumps add autopilot capabilities to outboard or sterndrive (inboard/outboard) vessels with existing hydraulic steering systems.

Mechanical drive units add autopilot capabilities to cable-steer runabouts and larger rudder-steered vessels with inboard engines.

Steering System	Size/Capacity/Compatibility	Recommended Drive Unit	Required Computer
Outboard/Stern Drive with Hydraulic Steering	Hydraulic cylinder < 15 cubic in or 250cc	PUMP-2	NAC-2
	Hydraulic cylinder(s) 10-33 cubic in or 160-550cc	PUMP-3	NAC-3
	Hydraulic cylinder(s) 17-58 cubic in or 290-960cc	PUMP-4 or PUMP-5	NAC-3
Outboard/Stern Drive with Mechanical Steering	Compatible with Morse 290,304411 and TeleflexSSC52 cables	HELM-1	NAC-2
Inboard with Hydraulic Steering	Hydraulic cylinder < 15 cubic in or 250cc	PUMP-2	NAC-2
	Hydraulic cylinder(s) 10-33 cubic in or 160-550cc	PUMP-3	NAC-3
	Hydraulic cylinder(s) 17-58 cubic in or 290-960cc	PUMP-4 or PUMP-5	NAC-3

Retrofitting:

PUMP-2 replaces the popular RPU-80. The body port threads on the pumps have changed from 7/16" 20 UNF in the old pumps to a 1/4" 18 NPT thread in the new pumps. New fitting kits are supplied with PUMP-2 to facilitate fitting. The new fitting kits include: