Sea Ray 390 Sundancer, Руководство пользователя

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2.15
S
ECTION
2 • G
ENERAL
B
OAT
A
RRANGEMENT
390 Sundancer
®
(
425 Sundancer ®
)
TRIM PLANE SWITCH (AT HELM)
HYDRAULIC RAMS
TRIM PLANE ZINC
STBD TRIM PLANE
PORT TRIM PLANE
RESERVOIR FILL
TRIM TAB PUMP
H
YDRAULIC
T
RIM
T
ABS
(F
IG
. 2.15.1)
G
F
E
D
C
B
A
G
F
E
D
C
A
B
C
MANEUVERING/CONTROL HAZARD
Ensure continuous visibility of other boats, swimmers,
and obstacles during bow-up transition to planing.
! WARNING
E
FFECTS OF TRIMMING
(F
IG
. 2.15.2)
BOW-DOWN (“PLOWING”)
BOW-UP (“PORPOISING”)
PROPER TRIM (3-5° BOW-UP ANGLE)
EFFECTS OF PORT AND STBD TRIM TAB ADJUSTMENT
PORT TAB DOWN
PORT STERN UP
STBD BOW DOWN
BOTH NEUTRAL
NO CHANGE IN LIST
STBD TAB DOWN
STBD STERN UP
PORT BOW DOWN
B
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 on the aft bilge
bulkhead, mounted on the inside of the transom and
can be accessed through a hatch in the aft wall of
the master stateroom head. 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 create and 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 can also be used to provide attitude
adjustment at lower speeds.