Engine Alignment; Transmission; Stuffing Box - Tayana 37 Operation & Maintenance Manual

a. Engine Alignment
The propeller shaft of the TAYANA is 1-1/4" diameter stainless steel. The
shaft is checked for accuracy initially at the factory during installation and is
carefully aligned to the engine with the hull being properly supported and
level. At this time, the shaft log and bearing is bonded to the hull
penetration. The coupling to the engine is checked again for alignment by
the commissioning team prior to delivery of the boat.
This alignment check should be made periodically, since the action of a
rough sea could possibly change the shape of a bolt enough to disturb
engine alignment. If, after the first rough water experience, the alignment
has not changed, it is usually only necessary to make the check once per
season.
The alignment is considered acceptable if there is a gap less than .005" per
inch of face diameter of the coupling –(.002 for a 4" coupling, .0025 for a 5"
coupling). The feeler gauge is inserted between the flanges at four points 90
degrees apart. Then check again keeping the engine coupling stationary and
rotating the shaft coupling 90 degrees at a time. This checks the squareness
of the coupling face to the shaft centerline. The engine alignment is adjusted
by raising and lowering the adjusting nuts at each mount. To make lateral
adjustment, loosen the mounting pad screws that anchor the engine to the
bed. You will note there are slots in the mount pad which allow a reasonable
amount of adjustment side-to-side.
After adjusting and re-tightening all mount screws and lock nuts, double
check the alignment.
In the absence of a feeler gauge, the alignment can be checked fairly
accurately with a strip of paper. Insert the paper between the two halves of
the outer flange and rotate both together 360 degrees. The paper should
remain in place through the complete turn.
b. Transmission
Periodically check the oil level in the transmission and inspect the control
cables for signs of damage, chafing, corrosion or loose fasteners. Lubricate
the moving parts with spray lubricant or light grease.
c. Stuffing Box
The gland (stuffing box) should be tightened at least once per month to see
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