Bennett Marine Premier Line Systems User Manual
Installation Instructions
& Reference Guide
» READ INSTRUCTIONS COMPLETELY BEFORE BEGINNING INSTALLATION
» TEST SYSTEM BEFORE PUTTING BOAT IN WATER
» PLEASE KEEP THIS MANUAL WITH THE BOAT
550 Jim Moran Boulevard
Deereld Beach, Florida 33442
USA
Phone: +1.954.427.1400
Fax: +1.954.480.2897
Congratulations, you are the owner of Bennett’s Premier SST System —
the most prestigious trimming system in the world. Bennett Marine is recognized
worldwide for durability, strength, and unparalleled customer satisfaction.
How to Use Your SST Trim Tab System
Getting and Staying Trimmed
Your vessel will “break over” or plane at a particular speed. This speed is
determined by weight distribution, water conditions, etc. Your SST trim tabs
enable you to plane at lower speeds. By depressing the helm control in the
“Bow Down” position, your trim tabs move down. This will raise your stern
and lower your bow, getting you up on plane faster and increasing your speed.
Your Vessel’s Optimum Attitude
Determine your optimum attitude by conducting this test: Get out and run at
full speed in calm water. Notice the bow in relation to the horizon. This should
be your best running attitude. You can use your trim tabs to recreate this “optimum
attitude,” correcting for changes in weight distribution, speed and water conditions.
Getting Used to the “Feel” of Your Tabs
When learning to use the SST, begin by pressing the helm control in half-second bursts,
allowing time between corrections for gradual trimming. Do not over-trim. An over-trimmed vessel
will “plow” or “bow-steer.” If you over-trim, simply press “BOW UP” and the bow will rise.
Trimming From a Bridge or Tower
When steering from a bridge or tower, a good trimming method is to watch the bow spray, stern wake, or the rooster tail. An untrimmed vessel will
produce spray farther aft of the bow and it will produce a larger wake. When trimmed, the bow spray is farther forward, the wake is reduced, and
the rooster tail is smaller and farther behind the boat. You’ll also notice that the engine RPM may increase when the boat is properly trimmed.
Running in Rough Water
When running in a chop, press “BOW DOWN”. This will bring the “V” of the hull in contact with the waves rather than having the waves pound the
atter portion of the hull and your passengers. In a following sea or when running an inlet, the trim tabs should be fully retracted for maximum
rudder response.
Correcting for a “Listing” Condition
The SST trim tabs may be operated individually so that you can correct for a “listing” condition. Your control is designed so that you can use it
“intuitively.” Do not think about what the trim tabs are doing, just concentrate on your bow. If the port bow is high, push the port-side “Bow Down”
direction. If the starboard bow is high, push the starboard side “Bow Down” direction until the “listing” condition is corrected.
Safety Precautions
• Do not over-trim, particularly at high speeds as the bow may dig in and wave action may cause the vessel to veer.
• While underway, do not move one trim tab signicantly farther down than the other as undesirable listing could occur.
• For best maneuverability, trim tabs should be fully retracted in a following sea, or when running an inlet.
• Improper use of trim tabs can cause an unexpected attitude change of vessel, which could lead to an unsafe condition.
The SST System will have a signicant eect on the operation and versatility of the vessel. The best learning method is to spend time getting
familiar with your vessel’s reaction to trim tabs. Always operate your vessel with safety rst in mind.
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P-SST-S
Installation Instructions for Dual Acting SST System
READ THIS FIRST BEFORE BEGINNING INSTALLATION
IMPORTANT FOR ACTUATOR INSTALLATION ON ALL BOATS
Actuators must be installed perpendicular to the trim tabs and parallel to each other. Stainless steel is not exible.
Measurements have to be precise.
BE CAREFUL NOT TO ROTATE THE ACTUATOR SHAFT ROTATING THE SHAFT WILL DAMAGE THE INTERNAL SENSOR.
IMPORTANT: FOR BOATS KEPT IN SEAWATER
THIS SYSTEM MUST BE PROTECTED FROM ELECTROLYSIS AND GALVANIC CORROSION —
THIS DAMAGE IS NOT COVERED UNDER WARRANTY
To provide protection from electrolytic corrosion a zinc anode must be applied to each tab. In the case of tabs installed on the
boat as original equipment by the builder, a bonding system may be utilized for your particular model. The SST system top
portion of the actuator and the actuator shaft are electrically isolated from each other. Therefore the trim plane and the
upper part of the actuator must be individually protected or integrated into a bonding system.
MUST USE ANTI-FOULING PAINT
Trim tabs and actuators should be painted with anti-fouling paint to prevent fouling by marine growth.
Follow paint manufacturer’s recommendations for proper priming and painting of stainless steel.
NOTE: Do not paint under zincs — this prevents electrical contact with trim tabs.
Step 1: Positioning Tabs
Position the trim tabs against the transom and check to see that the upper mounts of the hydraulic actuators do not center on an inside
obstruction. If they do, reposition tabs slightly outboard. The further outboard the tabs are mounted, the greater the lateral
(side-to-side) control. Position tabs 8-10 cm (3"-4") from the chine and run towards
the centerline of the boat.
Step 2: Securing Tabs
Attach the hinge plate and backing plate (mounting plates), and trim tab with
6mm (1/4") stainless steel fasteners along the bottom of the transom.
(See Figure 1) Using the backing plate as a template, mark screw hole locations.
Assemble mounting plates and tab, dip screws in marine epoxy before running in.
Support the trim tab from below, then slide trim tab between backing plate and hinge
plate before running screws tight. Snug screws down to secure mounting plates and
trim tab to transom. If the transom is curved, a shim must be made of a suitable
material to provide a at mounting surface.
7mm (9/32") Mounting Holes for
6mm (1/4") Fasteners
Hinge
Backing
Plate
Plate
Trim Tab
Figure 1
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Step 3: Drilling the Holes for Actuators
DUAL ACTUATOR SYSTEMS (2 ACTUATORS PER SIDE)
These systems consist of two actuators per trim tab — one with
sensor and one without sensor. The actuator with the red sensor wire
installs on the port side of the boat, and the actuator with the green
sensor wire on the starboard side of the boat.
IMPORTANT: The hole for the sensor wire must be accurate
— match the paper template exactly so that the wire goes
through the transom easily. Be careful not to crush or pinch
the wire while mounting the actuator.
(See Figure 2) For this step, use the two actuators WITHOUT the
sensor wires. You will do this for each side of the boat:
1. Each trim tab is installed as an extension of the hull. To achieve
this, position the upper mount of each actuator with the trim tab on
the same plane as the hull bottom.
IMPORTANT INSTALLATION NOTICE:
MAKE SURE ACTUATOR UPPER MOUNTS
FACE THE CORRECT WAY
The upper mount is able to pivot through 180 degrees but there
is only one correct way to install it.
An easy guide: Make sure the three black dots in the upper
mount (as shown) are not visible when installed.
No black dots visible
when mounted.
CORRECT
Black dots visible.
NOT CORRECT
2. Support the trim tab assembly from below while positioning against the transom. Attach both actuators without sensors to the trim
tab using the supplied 5/16-18 x 1 ¼" hex head machine screws.
3. Mark the outline of the four mounting holes in the upper mount. Remove the actuators from the trim tab and set aside.
4. Take both actuator paper templates and put them in position — the paper template with sensor hole should be inboard, and the
template without sensor hole should be outboard. Align the templates and tape to the transom. The templates should be used to mark
and drill the sensor holes and pipe nipple holes. Drilling a small pilot hole rst helps locate an accurate center for each hole. Based on
the template, for the actuators with a sensor, drill a 19mm (3/4") hole in the transom for the sensor wire. Drill the marked
8mm (5/16") mounting holes for each actuator. And drill the marked 12mm (1/2") holes for the pipe nipples.
5. Once all the holes are drilled, mount the actuators to the trim plane using the supplied machine screws. DO NOT TIGHTEN.
Note: Actuators WITH sensors should
be mounted inboard. Actuators
WITHOUT sensors should be mounted
outboard.
PROCEED TO STEP 4 ON PAGE 6 TO
COMPLETE THE INSTALLATION.
For Each Side of the Boat:
Use Both Actuators
WITHOUT Sensors to
Position the Upper
Mounts and Drill the
Four Mounting Holes
Template
Without
Sensor
Use Individual Templates to
Drill the Sensor Holes and
Pipe Nipple Holes
Template
With Sensor
(inboard
actuator)
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Figure 2
SINGLE ACTUATOR SYSTEMS (1 ACTUATOR PER SIDE)
(The actuator with the red sensor wire installs on the port side of the boat,
and the actuator with the green sensor wire on the starboard side of the boat.)
1. Each trim tab is installed as an extension of the hull. To achieve this,
position the upper mount of each actuator with the trim tab on the same plane
as the hull bottom. Support the trim tab assembly from below in the fully
retracted position. Attach an actuator to the trim plane using the supplied
5/16-18 x 1 ¼" hex head machine screws. Tip back the upper mount such that
the wires and the hydraulic ports face away from the transom. Position the
assembly template over the end of the upper mount as shown in Figure 3.
The radius on the top of the uprights should nest fully into the assembly
template. This will temporarily locate the position of the upper mount.
Mark the position of the assembly template by tracing around the perimeter of
the template.
2. Remove the actuators from the trim tab and set aside.
Figure 3
3. Hold the assembly template placed in the marked position, then
mark the outline of the four mounting holes, the pipe nipple holes
and the sensor cable hole.
4. Remove the assembly template. When completed, you should
have an outline of the actuator upper mount as shown in Figure 4.
5. Drill the marked 8mm (5/16") mounting holes for each
actuator. Drill the 19mm (3/4") hole in the transom for the sensor
wire. And drill the 12mm (1/2") holes for the pipe nipples.
IMPORTANT: The hole for the sensor wire must be
accurate — match the template exactly so that the wire
goes through the transom easily. Be careful not to crush
or pinch the wire while mounting the actuator.
6. Once all the holes are drilled, mount the actuators to the trim
tab using the supplied 5/16-18 x 1 ¼" hex head machine screws.
DO NOT TIGHTEN.
Figure 4
IMPORTANT INSTALLATION NOTICE:
MAKE SURE ACTUATOR UPPER MOUNTS
FACE THE CORRECT WAY
No black dots visible
when mounted.
CORRECT
Black dots visible.
NOT CORRECT
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Step 4: Mounting the Actuators to the Transom
Carefully remove hex plugs from the uid holes in the actuator upper mounts. The actuators contain a large amount of automatic
transmission uid. Apply Teon tape on male threads of pipe nipples and tighten into the actuator upper mounts. (See Figure 5)
Note: Before pushing the pipe nipples and sensor plugs through the holes in the
transom, cover the ends with masking tape to prevent damage or debris from
entering the system.
Carefully insert sensor wire through center hole. Pull all slack sensor wire into the boat.
Pipe nipples
thread in here
with teon
tape
Apply waterproof sealant on surface of the upper mount, around pipe nipples and screw holes.
Insert pipe nipples through transom and secure actuator upper mounts to transom with
8mm (5/16") fasteners. Actuators should be through-bolted to transom.
Figure 5
Tighten 5/16-18 x 1 ¼" machine screws to attach the actuator to the trim tab.
Step 5: Filling the Dual Acting Hydraulic Power Unit (DAHPU)
Remove the Lexan cover from the DAHPU. Then remove the plug from the ller stack located at the front left corner of the reservoir.
Fill uid to reservoir if necessary using any type automatic transmission uid (ATF).
Step 6: Mounting the Dual Acting Hydraulic Power Unit
Install Dual Acting Hydraulic Power Unit (DAHPU) in a convenient, dry location. Important: The DAHPU must be mounted in a dry
enough location to avoid drenching. Allow space above the DAHPU so that it may slide into its mounting bracket — about
8 cm (3"). This will also be enough space to remove Lexan cover once installed. Use the mounting bracket as a template, being careful
not to ex or bend it. The upper holes on the DAHPU mounting bracket should be 11.75 cm (4 ⁄") apart. Drill 4mm (5/32") pilot holes for
the mounting bracket. Put the four #10 x 1" screws into place but do not fully tighten. Run ground wire and wire harness down the back of
the DAHPU while sliding it into bracket. Now tighten screws on mounting bracket.
Step 7: Attaching Fittings
Inside the transom, remove the protective tape from the pipe nipples. Check that the pipe nipples are clean and clear. Then apply Teon
tape on male threads of pipe nipples and tighten the 90° brass elbows to pipe nipples.
Step 8: Running Hydraulic Tubing
Single Actuator System: Run hydraulic tubing between the actuators and cut to length. Secure tubing as needed. (See next page,
Figure 7 for Single Actuator Systems.) Dual Actuator Systems: Run tubing from the DAHPUs to the desired Brass Line-T location as
shown. Secure as required. (See Figure 8 for Dual Actuator Systems.) Use tube bending clips at desired 90° bends in tubing to prevent kinking.
Step 9: Connecting Tubing to Actuators and DAHPUs
(See Figure 6) Insert tubing through the nut with ferrule and into the 90° elbow.
Push tubing to bottom of tting while tightening.
Tighten nut with 13mm (½") wrench one full turn past
nger tight - NO MORE.
Push until the tubing bottoms in the tting. While continuing to bottom the tubing in
the tting, tighten nut “nger tight,” then one full turn with a 13mm (1/2") wrench …
NO MORE. Do the same to connect the tubing to the Brass Line-Ts, and then from the Brass
Line-Ts to the DAHPUs.
Step 12: Installing Electronic Indicator Control
Wire control and electrical system per diagram and instructions in the next section for a
SST System with an EIC5000.
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