Maxum 4100 SCA Sportyacht, Owner'S Manual Supplement

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22 Chapter 2: Components/Systems
4100 SCA Sport Yacht
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Owner’s Manual Supplement
Shaft-Transmission Alignment
Alignment between the engine transmission output shaft and
the propeller shaft is critical. This alignment had been per-
formed at the factory, and was rechecked by the dealer after
the yacht had been in the water for 48 hours.
•
An alignment inspection should be performed as part of
the routine maintenance program by a marine mechanic
after the initial 30 hours of operation, then annually or
whenever an unusual noise or vibration is noticed.
•
The gap between flange faces should be less than 0.003".
•
Replacement flange bolts, nuts and washers must be
corrosion resistant and grade 8 or better.
•
Recheck flange bolt torque after 20 hours of operation.
Tighten the flange bolts according to the torque specifica-
tions listed in the table below.
FLANGE BOLT SPECIFICATIONS
Shaft Log Packless Sealing System
The shaft seal, which is part of the shaft log packless sealing system, is a maintenance-free, watertight seal that
doesn’t require packing or adjustments.
Controls
Steering System
Your yacht is equipped with a manual hydraulic steer-
ing system. Before using the steering system, read and
understand the steering section in your owner’s man-
ual, and observe the following:
•
A manual hydraulic system will not operate as eas-
ily as your car’s power steering.
•
A rhythmic pulsing when turning the wheel is a
characteristic of the pump and is not a malfunction.
Also, when coming off a hard-over position, a resis-
tance may be felt, followed by a distinct sound.
This is a normal situation resulting from the release
of the check valve.
•
The steering fluid level and pressure should be
checked regularly, according to the instructions and
maintenance suggestions in the steering manual.
BOLT SIZE TORQUE
3/8" - 24 40 +/- 7 lb.
7/16" - 20 65 +/- 10 lb.
1/2" - 20 95 +/- 15 lb.
5/8" - 18 200 +/- 30 lb.
M16 x 1.5 175 +/- 25 lb.
TYPICAL TRANSMISSION-TO-PROP SHAFT COMPONENTS
TRANSMISSION-TO-PROP SHAFT COMPONENTS VARY,
DEPENDING UPON ENGINE TYPE AND SIZE
SECTION VIEW
OF HULL
CLAMPS
SHAFT LOG
(TRIANGLE FLANGE)
BELLOWS SHAFT
FLANGE BOLT (TYPICAL)
POSSIBLE QUANTITY
CARBON/GRAPHITE
FLANGE
TRANSMISSION
OUTPUT FLANGE
4, 6 OR 8 BOLTS
DETAILED VIEW
COUPLER
ROTOR
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A marine mechanic should perform the shaft/transmission alignment, since it requires moving
the engine.
•
If a shaft/transmission misalignment exists, have a qualified marine mechanic perform an alignment
as soon as possible. Continued use may lead to premature engine, transmission, shaft, shaft seal and/
or hull damage!
CAUTI O N!
!
AFT
STEERING
CYLINDER RUDDER
ARM ASSY
STEERING SYSTEM ROUTING
TIE BAR