Albemarle 410 CONVERTIBLE Owner's Manual download pdf (Page 18)

410 Convertible

• Before changing propellers to correct boat performance

problems, be sure other factors such as engine tuning,

bottom and running gear growth, etc., are not the source

of performance changes. You also should be sure the load

conditions are those normally experienced. If the boat

ran in the required RPM range when it was new and you

have not added any additional gear or heavy equipment and

have not damaged the propellers, there is a good chance

the propellers are not the problem.

KEEP AWAY FROM THE PROPULSION MACHINERY

DURING ITS OPERATION OR WHENEVER THE

BOAT IS IN MOTION. MOVEMENT OF WATER PAST

A PROPELLER CAN CAUSE THE PROPELLER,

SHAFT AND OTHER PROPULSION MACHINERY TO

ROTATE EVEN IF THAT EQUIPMENT IS NOT BEING

OPERATED INTENTIONALLY.

1.7 Running Gear

Shaft Logs and Dripless Seal

The shaft logs, which are fastened into the hull bottom, allow

the propeller shaft to extend and rotate through the hull. The

shaft log is equipped with a special “Dripless” propeller shaft

seal. To lubricate this seal, sea water from the engine cooling

system is injected into the shaft seal through a hose that is

connected to the engine and the shaft seal housing.

The shaft seal must have positive water injection any time the

propeller shaft is rotating. The water ﬂow to the seal should

be tested annually by removing the water injection hose from

the seal ﬁtting and running the engine at idle with the trans

mission in neutral. There should be a positive ﬂow of water

from the hose. If no water is ﬂowing from the hose, contact

your dealer or the Albemarle Customer Relations Department

before operating your boat. Some water will leak into the

bilge from the hose ﬁtting on the seal assembly during this

test. The hose should immediately be reattached and the hose

clamps tightened securely when the test is completed. Please

refer to the seal manufacturer owner’s manual for additional

information on the shaft seal.

Proper performance of the shaft seal is directly dependent upon

correct propeller shaft alignment. Propeller damage, a bent strut

or shaft, or abnormal wear, settling, etc. are common reasons

for misalignment. This can cause such problems as repeated

shaft leakage, excess seal wear, shaft log and assembly damage,

premature strut bearing wear, etc. It is, therefore, important

that the alignment be periodically checked and adjustments are

made when necessary.

ALWAYS BE SURE TO USE THE SHAFT REMOVAL

SLEEVE AND FOLLOW THE SEAL MANUFACTURER’S

INSTRUCTIONS WHEN REMOVING OR INSTALLING

A PROPELLER SHAFT. IMPROPERLY REMOVING

OR INSTALLING A PROPELLER SHAFT CAN

PERMANENTLY DAMAGE THE SHAFT SEAL AND

CAUSE IT TO LEAK.

Struts

The struts are the metal castings bolted to the bottom of the

hull to secure the aft end of the propeller shafts. A replaceable

cutlass bearing, also called a strut bearing, is used to minimize

shaft wear. The strut bearing should be inspected once a year,

or whenever the boat is hauled, to ensure that there has been no

damage or deterioration and that the strut bearing is not worn

excessively. Upon inspection of the bearing, a small amount

of play between the propeller shaft and bearing, .008” to .010”,

is normal. This gap allows water to pass between the bearing

and the shaft to lubricate the bearing surface. If the rubber

bearing shows signs of deterioration or excessive wear, greater

than .015” play between the bearing and the shaft surfaces,

the bearing should be replaced and you should contact your

Albemarle dealer. It is advisable, during lay-up periods, to

insert some castor oil into the rubber bearing to keep it from

“freezing” to the shaft. Never use machine oil or grease on

the rubber bearing.

THE OPERATION OF THE BOAT IN HEAVILY

SILTED OR POLLUTED WATER, WITH A DAMAGED

PROPELLER, A DAMAGED PROPELLER SHAFT

OR WITH THE ENGINE OUT OF ALIGNMENT, CAN

SIGNIFICANTLY SHORTEN THE LIFE OF THE STRUT

BEARING. IF YOU EXPERIENCE ANY OF THESE

SITUATIONS, THE BEARING SHOULD BE CHECKED

MORE FREQUENTLY.

ALWAYS CHECK THE ENGINE ALIGNMENT AFTER

REPLACING THE STRUT BEARING.

Propeller Shaft Seal

1 2 ... 13 14 15 16 17 18 19 20 21 22 23 ... 137 138

Comments to this Manuals

No comments

Albemarle 410 CONVERTIBLE Owner's Manual Page 18

Comments to this Manuals