Albemarle 410 CONVERTIBLE Owner's Manual download pdf (Page 19)

410 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

Cat Marine Power Display (MPD)

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Albemarle 410 CONVERTIBLE Owner's Manual Page 19

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