Albemarle 41 CONVERTIBLE Owner'S Manual Download

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10 Convertible

Propeller Shaft Alignment

The propeller shaft coupling and the transmission coupling
should be checked for proper alignment beginning with the ﬁrst
launching, again after 20 hours of engine operation, and annu-
ally thereafter. The alignment should especially be checked if
noise or vibration occurs.

Excessive vibration, abnormal strut bearing wear, or broken
propeller shaft coupling bolts are an indication of misalignment.
Misalignment can also cause severe damage to the shaft log,
strut, shaft and the engine transmission. Realignment should
only be performed by a qualiﬁed service person.

The correct procedure for checking the shaft alignment so a
boat owner can determine if service work is required, is as
follows:

Step 1:

Remove the bolts that secure the propeller shaft
ﬂanges.

Step 2:

Hold the propeller shaft ﬂange ﬁrmly against the
transmission ﬂange.

Step 3:

Try to insert a .004” feeler gauge at the top, the
bottom and at both sides between the ﬂanges. If
it can be easily inserted between the ﬂanges in any
area, try inserting a larger feeler gauge until you
determine the amount of variance.

Step 4:

While holding the transmission ﬂange, turn the
prop shaft 90 degrees and repeat step 3. A straight
shaft in proper alignment will not allow the inser-
tion of a feeler gauge larger than .004”, regardless
of the prop shaft position.

Step 5:

If  a  gap  larger  than  .004”  is  found  and  the  gap
moves as the shaft ﬂange is rotated, the ﬂange or
the prop shaft is bent out of tolerance and must
be replaced or removed and straightened.  If the
gap remains at the same position regardless of the
propeller shaft rotated position, the engine must
be realigned.  At this point, an Albemarle dealer
should be contacted.

NOTE: The boat should always be at rest in the water when

checking or aligning the propeller shaft.

MAKE SURE THE PROPELLER SHAFT FLANGE
BOLTS ARE TIGHTENED SECURELY AFTER
CHECKING THE ENGINE ALIGNMENT AND BEFORE
OPERATING THE BOAT.

Propeller Shaft Coupling

NOTE: Lifting the boat with lifting straps over the prop

shafts will cause the shafts to become bent. Always
position lifting straps so they are clear of the run-
ning gear.

1.8 Engine Instrumentation

The helm station is equipped with a set of engine instruments
and/or alarms.  These instruments allow the pilot to monitor
the engine operational conditions.  Close observation of these
instruments allows the pilot to operate the engines at the most
efﬁcient level and could save the engines from serious costly
damage.  The instrumentation is unique to the type of inboard
motors installed on your Albemarle and is typically built into
the electronic engine monitor and display system.  Some or all
of the following gauges may be present.

Tachometer

The tachometer displays the speed of the engine in revolutions
per minute (RPM). This speed is not the boat speed nor nec-
essarily the speed of the propeller. The tachometer may not
register zero with the key in the “OFF” position.

Cat Marine Power Display (MPD)