Before Installation
Before performing installation, read the entire instructions and make
sure battery power is disconnected.
Required Tools and materials
Installation Instructions
Installing New Upper Hinges with Sensors
Step 1 - Inside the transom, with tabs in full up position, locate the trim
tab hydraulic line. If there is no pipe nipple visible inside the transom,
you have a short through-transom tting connection,
(Figure 2). Unscrew and remove the actuator away from the transom and
use a 7/16"wrench to remove the tubing from the upper hinge.
Skip to step 3.
For standard installations, detach tubing from the brass elbow (some
uid will drip out). While holding the pipe nipples with vise grips,
unscrew the brass elbow using a 9/16" wrench. Do this procedure for
the port and starboard cylinders (see Figure 3).
Step 2 - Outside the transom, unscrew and remove the actuator away
from the transom. Remove the pipe nipple.
Step 3 - Start with the port side cylinder. Snap the white plastic clip
on the shaft protruding from the bottom of the cylinder.
is clip must be used to keep the spring inside the cylinder
compressed. Grasp the cylinder upper hinge with both hands and
unscrew it counterclockwise from the cylinder body (a small amount
of uid may spill).
Step 4 - Use care when handling sensor coils during assembly to
avoid damaging wires. Insert the metal rod into the piston,
pointed end down. Make sure
that the O-ring is in place in the
new upper hinge with sensor coil.
Screw the new upper hinge with
the red sensor wire onto the port
side cylinder while keeping the
metal rod inserted into the center
of the sensor coil (Figure 4).
Tighten the upper hinge hand tight. You will nish tightening the
cylinder in Step 7.
Step 5 - Remove the plastic clip from the piston and repeat steps
2 - 4 for the starboard cylinder. Use the upper hinge with the green
sensor wire for the starboard side.
Step 6 - Using the included template, drill a 5/16" hole in the
transom for the sensor wire (Figure 5). Screw the pipe nipple into the
actuator upper hinge. Tighten the nipple hand tight. en, with vise
grips, tighten two full turns …
NO MORE. Cover end of the
pipe nipple with masking tape.
If you have the short through-
transom tting, using a 7/16"
wrench, screw it in until the
tting is snug; the shoulder of
the tting will just touch the
plastic of the upper hinge.
Step 7 - Carefully feed the sensor wire through the 5/16" hole.
Apply sealant to the actuator upper hinge surface around the pipe
nipple, screw holes, and cable. Secure the actuator upper hinge to the
transom with mounting screws. Grasp the cylinder body with both
hands and tighten (clockwise) securely.
Step 8 - Inside the transom, remove masking tape from the pipe
nipples. Carefully wrap Teon tape around the male threads of the
pipe nipples. Holding the pipe nipples with vise grips (to prevent
them from turning) re-secure 90 degree elbows. Re-attach the
hydraulic tubing, tightening nut nger tight. Snug nut with 1/2"
wrench. Do not over-tighten. Note: If you have the short through-
transom ttings, omit this step. Repeat for the other side. Run the
red and green sensor wires to where you plan to mount the
ATP Helm Display.
Step 9 - Connecting the ATP Display
Refer to the “Installation of the ATP Helm Display” section on
page 7 of the ATP Hydraulic Installation & User’s Guide, and the
Connecting & Testing the System” section on page 8-9. Calibration
instructions as well as troubleshooting information can also be found
in the complete installation guide. A digital version of this manual
can be downloaded at BennettTrimTabs.com/ATP.
• 7/16", 1/2"
& 9/16" Wrench
• 5/16" Drill Bit
• Masking Tape
• 2" Hole Saw
• Teon Tape
• Wire Stripper
• Electric Drill
• Marine Grade
Sealant
• Vise Grips
• Wire Cutter
Figure 2
Hydraulic
Tubing
Short
hydraulic
tting
Transom
Figure 3
Nut
Brass
elbow
Pipe
nipple
Hydraulic Tubing
Transom
Figure 4
Figure 5
ATP Sensor Kit Installation Instructions
Have Questions?
We’re here to help
Call us at (954)427-1400
See the reverse side for the system diagram
and sensor wire hole drilling template
For information on installing a complete Bennett Hydraulic
Actuator, please visit BennettTrimTabs.com/Installation
ATP67-1
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