Bennett Marine Tab Position Indicator User Manual
Installation instructions
INSTALLATION INSTRUCTIONS
READ INSTRUCTIONS COMPLETELY BEFORE BEGINNING INSTALLATION
SYSTEM REQUIRES 12 VOLT POWER SOURCE
IF ACTUATOR STROKE IS LESS THAN 1" OR MORE THAN 2-1/2", OR IF LESS THAN 1"
OF PISTON SHAFT IS EXPOSED WHEN THE ACTUATOR IS FULLY RETRACTED, HAS
EXTERNAL HYDRAULIC CONNECTION, OR THREE RINGS MOLDED ON CYLINDER
BODY (SEE FIGURE 1), SPECIAL SENSOR COILS ARE REQUIRED. (CONTACT BENNETT
MARINE)
MAKE ALL ELECTRICAL CONNECTIONS WITH POWER OFF
TEST SYSTEM BEFORE PUTTING THE BOAT BACK IN THE WATER
Tools required:
1/2" & 7/16” Wrench
5/16" Drill Bit
2” Hole Saw
Teflon Tape
Wire Stripper
Electric Drill
Marine Grade Sealant
Jewelers Small Screw Driver
Vise Grips
Wire Cutter
Installing New Upper Hinge with Sensor
Step 1 Inside transom, with tabs in full up position, locate trim tab
hydraulic line and detach tubing from brass elbow (some fluid will
drip out). While holding pipe nipples with vise grips, unscrew brass
elbow. Do this procedure for port and starboard cylinders (see
figure 2). If there is no pipe nipple visible inside the transom, you
have a short fitting connection (see figure 3), skip to step 2.
Step 2 Outside transom, snap white plastic clip on shaft protruding from bottom of cylinder.
Grasp cylinder body with both hands and unscrew counterclockwise from cylinder upper
hinge (a small amount of fluid will spill).
Step 3 Insert metal rod into piston, POINTED END DOWN. Make sure that the O-ring is in
place in new upper hinge with sensor coil. Screw new upper hinge onto cylinder while
keeping metal rod inserted into center of sensor coil. Red cable for port side and green cable
for starboard side. Tighten upper hinge hand tight. IMPORTANT: Use care when handling
sensor coils during assembly to avoid damaging wires.
Step 4 Remove upper hinge from transom and remove pipe nipple. If you have a short fitting
use a 7/16” wrench to remove it from the upper hinge.
Step 5 Remove plastic clip from piston and repeat steps 2 - 4 for the starboard cylinder.
Step 6 Using template, drill 5/16" hole in transom for the sensor cable. Screw pipe nipple into new actuator upper hinge.
Tighten nipple hand tight. Then, with vise grips, tighten two full turns . . .
NO MORE. If you have the short fitting, using a ½” wrench screw it in until the
fitting is snug, the shoulder of the fitting will just touch the plastic of the upper
hinge.
Step 7 Cover end of pipe nipple with masking tape. Apply sealant to actuator
upper hinge surface around pipe nipple, screw holes, and cable. Feed actuator
cable through 5/16" hole and secure actuator upper hinge to transom with
mounting screws. Grasp cylinder body with both hands and tighten (clockwise)
securely. Repeat for other side. Run cables to helm.
Step 8 Inside transom, remove masking tape from pipe nipples. Carefully wrap Teflon tape around male threads of pipe
nipples. Holding pipe nipples with vise grips (to prevent them from turning) re-secure 90 degree elbows. Re-attach
hydraulic tubing, tightening nut finger tight. Snug nut with 1/2" wrench. Do not over-tighten. Note: If you have the short
fittings omit this step.