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Step 2: Mark and Drill Holes
Continuing to support the tab, use the backing plate as a template
to mark all the hole locations. If the transom is curved, a shim must
be made of a suitable material to provide a flat mounting surface.
Drill the holes on the trim plane mounting plate. All the holes
should be drilled at the same time. Drill the marked 11/32" (9mm)
mounting holes for each actuator. Drill the 3/4" (19mm) hole in the
transom for the sensor wire. Drill the 1/2" (12mm) holes for the pipe
nipples. And drill the appropriately sized holes for the mounting
plate based on the stainless steel fasteners chosen for install.
Apply sealant on the back of the backing plate and put plate on the transom.
Dip the selected stainless steel fasteners screws in marine epoxy before running in. Snug screws down to secure trim tab to transom.
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. The
pointed end of the upper mount must
face up as shown here.
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. Apply waterproof sealant on surface of the upper
hinge mount, around pipe nipples and screw holes. Apply sealant to the backing plate where the actuator upper mount will attach.
Insert pipe nipples through transom and secure actuator upper mounts to transom with 5/16" (8mm) fasteners. Actuators should be
through-bolted to transom. Do not tighten bolts.
Step 4: Attach Actuator
Continue supporting the trim tab assembly from below in the full retracted position.
Attach actuator to the center hole of the "X" bracket on the trim plane using
5/16 -18 hex head screw and nylon stop nut. (See Figure 4)
Step 5: Tighten the Bolts
Tighten the three upper mount bolts run through the
transom in Step 3.
4
1/2" pipe nipple holes
11/32" acuator
mounting holes
1/4" trim plane
mounting holes
Step 3: Mounting the
Actuators to the Transom
Carefully remove hex plugs
from the fluid holes in the
actuator upper mounts. The
actuators contain a large
amount of automatic
transmission fluid.
Apply Teflon tape on male
threads of pipe nipples and tighten into the actuator upper mounts.
(See Figure 3)
3/4" sensor wire hole
Figure 2
Pipe nipples
thread in here
with teflon
tape
Figure 3
Figure 4
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