Maxum 3700 SY, Owner'S Manual Supplement

Page: 35 / 80

Chapter 3: Propulsion & Related Systems
29
Shaft-Transmission Alignment
•
Alignment between the engine trans-
mission output shaft and the propeller
is very critical.
•
The alignment was performed 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 by a marine mechanic as
part of the routine maintenance pro-
gram after the initial 30 hours of
operation, then every 60 hours and
whenever unusual noise or vibration
is noticed.
•
Shaft-transmission alignment should
be performed by a marine mechanic
since it requires moving the engine
and prop shaft.
•
To insure proper alignment after a
haul out or dry storage, wait 48 hours
after launching before final alignment
adjustments by a marine mechanic
are made.
Shaft Log Packless Sealing System
The shaft log packless sealing system’s shaft seal is a maintenance-free, watertight seal that doesn’t require packing
or adjustments.
SYSTEM DAMAGE HAZARD!
•
If you suspect a shaft-transmission misalignment, have a qualified mechanic perform an
alignment inspection as soon as possible.
•
Continued use may lead to premature engine, transmission, shaft, shaft seal and/or
hull damage!
CAUTI ON !
TRANSMISSION-TO-PROP SHAFT COMPONENTS (TYPICAL)
SECTION VIEW
OF HULL
CLAMPS
CLAMPS
SHAFT LOG
(TRIANGLE FLANGE)
BELLOWS
SHAFT
ROTOR
FLANGE BOLTS
CARBON/GRAPHITE
FLANGE
COUPLER
TRANSMISSION
OUTPUT FLANGE