52 Sedan Bridge
(525 Sedan Bridge)
2.16
S
ECTION
2 • G
ENERAL
B
OAT
A
RRANGEMENT
MANEUVERING/CONTROL HAZARD
Ensure continuous visibility of other boats, swimmers,
and obstacles during bow-up transition to planing.
!
WARNING
C. H
YDRAULIC
T
RIM
T
ABS
The trim tabs on your Sea Ray
®
are operated with
a rocker type momentary switch at the control station
(See Figure 2.8.1). They are protected by a circuit
breaker on the control station breaker panel which
must be ON to use the trim tabs.
To trim the bow of your boat down, push the top
halves of BOTH rockers down in momentary
bursts. If you hold the rockers down, you will over
trim the boat and the bow will dig in. To correct over-
trimming, push bottom halves of BOTH rockers to
obtain desired planing angle.
The two trim tabs on the transom of your boat can
also be used to trim the list of your boat (See chart
below) that may be caused by improper storage
of gear, too many people on one side or a strong
cross wind. Operation of the rocker switch should
be momentary bursts to achieve proper attitude of
the hull.
When running wide open, most boats do not require
any trim unless heavily loaded.
In heavy following seas or when running in an inlet,
best maneuverability is obtained with a bow high
attitude. To be sure the tabs are full up in the zero
position, push the bottom halves of BOTH rockers
for several seconds.
The trim tab pump is located in the bilge on the
inside of the transom (See figure 4.15.1). To service
the unit, remove the tinted plastic cover to gain
access to reservoir fill plug and motor parts.
Hydraulic trim tabs use Type A Dexron II automatic
transmission fluid, which should be filled up to the
FULL mark on the pump base. Add fluid with the
trim tabs in the up position only.
Your boat is designed to plane at a particular speed
and weight distribution. As speed decreases or
weight increases, the stern will settle lower in the
water and the hull will push a hill of water, increasing
drag and requiring more power to move through the
water.
Hydraulic trim tabs are adjusted independently of each
other, enabling adjustment of bow attitude up and down
as well as to correct for side to side list. Trim tabs
also provide attitude adjustment at lower speeds.
R
UNNING
A
TTITUDE
L
IST
P
USH
BOW UP
......
TOP OF BOTH ROCKERS
BOW UP
PORT
TOP OF STARBOARD ROCKER
BOW UP
STARBOARD
TOP OF PORT ROCKER
BOW DOWN
PORT
BOTTOM OF STARBOARD ROCKER
BOW DOWN
STARBOARD
BOTTOM OF PORT ROCKER
H
YDRAULIC
T
RIM
T
ABS
(F
IG
. 2.16.1)
D
C
B
TRIM PLANE SWITCH (AT HELM)
HYDRAULIC RAMS
TRIM PLANE ZINC
A
E
TRIM PLANES
TRIM TAB PUMP
UP
DOW
N
C
B
A
D
E
C
D
B
