Engine Checks - Bayliner 4788 Operation Manual

Operating Manual for Sea Daze 4788 Bayliner

3.3.2 Engine Checks

Remember "WOBBS" prior to each cruising day: Water (Coolant), Oil, Bilge, Belts and Sea Strainer. The
inspection is best done in the morning while engines and engine room is cool.
The main engines on Sea Daze are very reliable Twin Cummins Diesels – Model 6TB 5.9 TD – 370 HP each.
If treated correctly, they can be expected to give trouble-free economical cruising. The engine room is accessed
through panels in the floor of the salon or through a hatch at the top of the companionway stairs next to the
refrigerator.
Turn the engine room lights on at DC panel in pilothouse.
To inspect the engines you will need to lift the salon floor hatch covers. Slide the salon table and chairs forward
to the ice maker bar and roll up the salon area rug to access the engine covers. You will need to lift 3 of the 4
covers as follows. 1) the port aft nearest the cockpit door to access the port engine oil dip stick, 2) the port
forward nearest the galley to inspect the coolant level, 3) the starboard forward hatch to access the starboard oil
dipstick and coolant level.
While the covers are open visually inspect to verify the bilge is dry, any significant water in the bilge could
indicate thru hull leak, bilge pump failure, or other critical issues such as engine coolant, or furnace coolant
leakage. If high water is noted check for sources and remedy before departing.
Check coolant level. Forward of each engine is an expansion tank. Fluid in the expansion tanks will indicate a
proper coolant level. If the engines are cool, you can reach your finger in at the caps on the top of the engines.
If you can reach coolant with your finger, it is fine. Coolant is a 50/50 mixture of antifreeze and water. If
coolant level is down look for a sign of a coolant leak under the engine. If there are signs of leakage, do not run
the engine. If no leak is identified add clean water.
Check Oil levels. Check the level of each engine's oil with the dipsticks. They are located on top of each engine
toward the aft/Mid point. The oil level should be between the two marks on the dipstick. Use a paper towel to
wipe the stick, reinsert, remove and check the level. The distance between the two marks is about 1.5 quarts.
Only fill if oil levels are below the add mark. Do not overfill!!! The oil fill on each engine is atop its valve
cover. After refilling, be sure to retighten the cap. Do not over tighten.
Reposition the hatch covers, rug, chairs and table
Lift the engine room access cover. This is the top stair of the companion way directly next to the galley floor.
Set this cover in front of the ice maker and climb into the engine room entry space. To access the engine room
you will need to open the sound barrier hatch. To open this hatch move all 4 cam handles 90 degree and using
the center handle push the barrier into the engine room. Set the barrier off to the side and enter the room.
Visually inspect V-belts, hoses, engine mounts, coupling bolts, 3 sea strainers (they are located aft of each
engine) and fuel filters. Look for leaks, wear, or looseness. To inspect sea strainers hold a flashlight behind the
filter and look through it for anything that could clog the filter. See labeled strainers located: in engine room
(port and starboard side), generator-cockpit floor (starboard side, forward). Check the transmission fluid levels
in each transfer case. Raise the dip stick on top of the transfer case housing; after inspection replace tightly to
avoid contamination from water.
Visually inspect the bilge. Check under and around the engines. During your inspection, ask yourself if
everything looks (and smells) right.
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Sea Daze 160323.doc Page 9 of 44 Last Revision August 11 , 2015