It prevents the system fuse from blowing if you try to actuate one trim tab up and the other down at the same time. If there is it is an Interrupter Relay (IR1000). Check to see if there is a relay in line on the wiring harness near the hydraulic power unit. Bennett Trim Tab Systems carry a five year warranty.Ħ. If you conclude the problem is in the pump, contact me. ![]() If you suspect corrosion on the wire connector near the pump, cut it out, test as above and reconnect using butt splices.ĥ. You may wish to cut the connector off on the pump side and try the test on bare wires.Ĥ. ![]() You want to check this connection for corrosion. There is usually a connector to the wire harness within a foot or so of the pump. This test may also be done right at the pump by substituting a "hot lead" for orange. Also note that any loose or missing screws on the back of the switch (whether a wire is connected there or not) can cause the pump to malfunction. If the trim tabs function correctly for each wire grouping then the switch is at fault. Orange (+), yellow, red, green= Both trim tabs up Orange (+), yellow, green=Starboard trim tab up Orange (+), yellow, red= Port trim tab up Orange (+), blue, red, green= Both trim tabs down Orange (+), blue, green=Starboard trim tab down Orange (+), blue, red= Port trim tab down Remove the wires from the helm control and touch together as follows: Is the unit receiving a solid 12 volts? Low voltage will some times cause the solenoids to not open preventing the tabs from moving even though the pump motor is running. If the symptom remains on the same side, malfunction may exist with the actuator / hydraulic linesĢ. If after reversing the lines symptom shifts to the other side the malfunction may exist in HPU. (24v & 32v use proportionately smaller)ġ.If one side is not operating reverse hydraulic lines on the front of the Hydraulic Power Unit to determine if the malfunction is in HPU or actuator / hydraulic lines. Hydraulic Power Unit is self bleeding, running the Trim Tabs up and down 3-4 times will purge air from the system.įuse: 12 volt system use 20 amp in-line fuse on positive. Let me know what you find and I will walk you through fixing it.įluid: Automatic Transmission Fluid (ATF) any type. Make sure that ALL the screws are tight on the back of the switch even if they don't have a wire attached, this could be your problem. Take a look at step 3 below, it will walk you through the test I think will isolate your problem. Here is a link to a video that covers troubleshooting the pump if it runs and a Trim Tab does not move Īlso make sure that the system is getting good power, check and clean both ends of the black ground wire at the pump as well as the other connections. Here is a link to a video that covers the basic system and general troubleshooting Below you will find the troubleshooting for the system.
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