Hylas 54 Specifications | H ome (Back to home page of website www.Dakare.com)

Yanmar Corporate Details:

Corporate Office, IL: 800 962-1984

Distributors NE: Mac Boring, 800 MACK Engine; www.MackBoring.Com

Mastry, Tampa, FL: 800 545-4574 (Richard Mastry Cell 727 639-1012)

Ft. Lauderdale Dealers: RPM Diesel (Billy) 954 587-1620

Ft. Lauderdale Dealers: Complete Yacht 954 462-4377

Ft. Lauderdale Dealers: Sun Power 954 522-4775 (We have been pleased with the work that Kevin has done for us.)

Mechanic's School: Larry Berlin - Mack Boring, Engine City Technical Inst. 800 305-3487; LarryB@EngineCityTech.com

Parts - Tony, Mack Boring, (800 622 5364 X220) (We recommend taking this class.)

Technical Support, Bob Shaw, Headquarters, Yanmar, IL, 800 962-1984

Yanmar Receives Best Review From SSCA

	Yanmar Receives Best Review From SSCA Note: In This Case, Lower is Better; Higher is Worse

	As Published in Cruising World Magazine Jan 2006 page 99 Data Provided by SSCA Member's Survey

Yanmar engine Model 4JH3-DTE - Vertical 4-cycle fresh water cooled diesel engine, direct injection, turbo charged.

Serial Number: E30319

Dimensions (mm) 886 x 581 x 660

Cooling water capacity (liters):\

Fresh water tank: 7.2

Subtank: 0.8

Engine weight: 260 kg / 118 Lbs

Oil Capacity ~ 8 Liters including Oil Purifier reservoir

Transmission: 30 wt Motor Oil, upon change ~ 1 pint

Continuous Output rating at 3700 RPM's: 81.6 kW - 111.1 HP (Note: BHP = 0.7355kW)

1 Hour Rating at 3800 RPM's: 91.9 kW - 125 HP

Low Idle speed: 700 +/- 25 RPM's

Warranty Issues:

There is an undocumented fix for the fuel injectors on the 4JH3-DTE. The 5 fuel injectors nozzle holes on each fuel injector tip are .001mm too large. As a result, the engine tends to be more smoky than it should be. The fix for this is to replace the fuel injector tips with the tips for the 4JH3-HTE engine. There is no Yanmar bulletin on this fix. A contact point at Yanmar in Green Cove, Illinois who approved the warranty fix and who is very familiar with this issue is Bill Schreor. The point of Contact we used was Rendell Animoni and Richard from Trintrac Ltd, in Trinidad (868) 672-5329.

	Nozzle Part Number	Nozzle Hole Size (MM)	Injector Part Number	Engine Type
Old	150P265	.026	129692-5300	DTE
Replacement	150P255	.025	129672-5300	HTE

Note: A not well documented point on the Yanmar Service Manuals for the 4JH3-DTE

There are 3 Manuals:

The General Manual (HINSHI-H8009)

The Addendum Manual (HINSHI-H10-009)

The Installation Manual (For Pleasure Boats) Rev. 3 (HISNI-H8010-R4)

You should get two service manuals for the 4JH3-DTE engine. We found that the service reps at Mac Boring (The largest Yanmar distributor in the US) were unaware of the fact that there are 2 manuals for this engine. The installation manual has a lot of useful information and it can be of great service in debugging the electical wiring, proper techniques for installation, a tremendousamount of engine technical data that may be found useful in diagnosing future problems, and a compendium of optional accessories (We wish we had this manual when ordering our boat.)

You should get both the General and Addendum manuals. The Addendum contains indispensable information on the engine and that information is not duplicated in the General manual. (See for example: Test Running.) We strongly suggest that if you want parts, manuals, etc., that you contact:

Tony (800 622 5364 X220)

at Mac Boring in New Jersey. He not only knows all this stuff, he is a great person to work with and you will find him very helpful.

Data provided courtesy of Mac Boring, Union, NJ

The rate of increase in fuel consumption through the lower portion of the curve is .2 GPH/100 RPM's

The rate of increase in fuel consumption in the upper range of the curve is 3.4 GPH/100 RPM's

The rate of increase in fuel consumption through the entire curve is .28 GPH/100 RPM's

Engine Room Controls:

Controls are placed in the engine room to conveniently provide access to:

AC Power

DC Power

Engine Start & Stop

Bilge Pumps

Engine Room Ventilation Fan

Cooling System Recommendations

Yanmar recommends that you use Texaco Long Life antifreeze (Orange in color) in your engine because the normal (Green in color) antifreeze is high in silicates which will cause problems down the line.

Below are critical hose replacements (spares) for the Yanmar engine. Page references refer to the Yanmar manual.

Fig	Item	Part	Decription
24	15	129470-49250	Pipe. C. Fresh Water
23	11	129672-49090	Pipe Cooling Water
24	3	129693-44560	Pipe overflow Turbocharger
16	15	129792-39610	Joint Rubber from Turbocharger
9	10	129693-18450	Pipe B.C.S. Suction Manifold

Fuel and Oil Purification:

The Yanmar has been augmented to include a fuel polishing and an oil polishing system.

The transmission used is a Japanese Hurth transmission.

Model KMH4A hydraulic wet-multiple disk clutch with 8 degrees down angle drive.

Reduction ratio 2.45:1 (Validated during Commissioning)

Lube oil capacity 2.0 liters.

Cleaning Turbo Charger

We have been using CRC 6-56 to clean our Turbo. We spray about every 100 hours for about 10-15 seconds with the engine running at 2500 RPM's and then we let the engine run for at least another 10-15 minutes before shutting it down. We understand that Yanmar makes a similar product, that it is very expensive, and difficult to obtain in that many Yanmar people do not know about the product. Several other Hylas owners are now using this same product.

Recommended List of Parts:

Note: The Following parts are not shown in the Table below:

Coolant Treatment - Texaco Extended Life

Parts Manual & Service Manuals (See note above)

Spares and Yanmar Engine Parts carried on Dakare

(References taken from Yanmar Parts Catalog 000Y00R4771)

Part Name	Quantity	Part #	Reference	Comment
Bonnet abd Breather Gasket	2	129550-11310	Fig 8 Item 8
C.F.W. Cooler Gasket, Exhaust Manifold	1	129550-13110	Fig 22 Item 1
C.F.W. Cooler Gasket, Gasket	1	126650-44610	Fig 22 Item 12	Old # 120445-44640
C.F.W. Cooler Gasket, O-Ring 1A G-100.0	2	24231-00100	Fig 22 Item 18
C.F.W. Pump; Fresh Water Gasket	2	129795-49551	Fig 21 Item 13
C.F.W. Pump; Fresh Water Gasket	2	129470-49810	Fig 21 Item 15
C.F.W. Pump; Fresh Water Gasket CW Pump	1	129150-42350	Fig 21 Item 18
C.F.W. Pump; Fresh Water O-Ring	2	129150-42310	Fig 21 Item 2
C.F.W. Pump; Fresh Water Pump Assy	1	129470-42001	Fig 21 Item 1
C.F.W. Pump; Fresh Water Thermostat	2	129470-49801	Fig 21 Item 14
C.S.W. Pipe C Fresh Water	1	129470-49250	Fig 24 Item 15
C.S.W. Pipe Cooling Water	2	129693-49260	Fig 24 Item 16
C.S.W. Pipe Cooling Water Pipe	1	129672-49010	Fig 23 Item 1
C.S.W. Pipe Cooling Water Pipe	1	129693-49010	Fig 23 Item 2
C.S.W. Pipe Cooling Water Pipe	0	129693-49010	Fig 23 Item 3	Same as Item 2 above
C.S.W. Pipe Cooling Water Pipe	1	129672-49020	Fig 23 Item 4
C.S.W. Pipe Cooling Water Pipe	1	129672-49090	Fig 23 Item 11	See Fig 10 Item 25
C.S.W. Pipe Hose	2	23072-040300	Fig 23 Item 18
C.S.W. Pipe Joint	2	129470-49200	Fig 24 Item 12
C.S.W. Pipe Joint 28	2	129470-49240	Fig 24 Item 14
C.S.W. Pipe Overflow	1	129693-44560	Fig 24 Item 3
C.S.W. Pipe Rubber Joint	1	129171-49900	Fig 23 Item 25
C.S.W. Pipe; Pipe	1	127420-44570	Fig 24 Item 1	Old # 127420-44560
C.S.W. Pump Impellar; Salt Water	5	129670-42530	Fig 20 Item 2	See Note Fig 20
Cylinder Block Gasket	1	129693-01330	Fig 1 Item 30
Cylinder Block Gasket 10, Round	20	23414-100000	Fig 1 Item 12
Cylinder Block Gasket 12, Round	10	23414-120000	Fig 1 Item 37
Cylinder Head Cap Valve	2	129150-11370	Fig 7 Item 22
Cylinder Head Gasket	4	129470-11920	Fig 7 Item 32
Cylinder Head Gasket	8	129693-11880	Fig 7 Item 31
Cylinder Head Injection Studs	4	26216-060202	Fig 7 Item 14
Cylinder Head Nut M6	2	26366-060002	Fig 7 Item 25	Old # 26367-060002
Cylinder Head Seat	4	129693-11870	Fig 7 Item 29
F. I. Pipe & Valve Assembly	4	729692-53100	Fig 27 Item 1
F. I. Pipe & Valve Bolt M 6X 10 Plated	6	26106-060202	Fig 27 Item 40
F. I. Pipe & Valve Gasket	4	129470-11920	Fig 27 Item 20
F. I. Pipe & Valve Pipe Fuel Injector	1	129693-59810	Fig 27 Item 23
F. I. Pipe & Valve Pipe Fuel Injector	1	129693-59820	Fig 27 Item 27
F. I. Pipe & Valve Pipe Fuel Injector	1	129693-59830	Fig 27 Item 31
F. I. Pipe & Valve Pipe Fuel Injector	1	129693-59840	Fig 27 Item 35
Flywheel Housing Oil Seal	1	129795-01780	Fig 3 Item 3
Fuel Injection Pump O-Ring	1	121850-51960	Fig 26 Item 7
Fuel Injector Nozzle .25 MM 5 Holes HTE(FIX)	4	150P255	Fig 27 Item 46
Fuel injector Nozzle .26 MM 5 Holes DTE	4	150P265	Fig 27 Item 45
Fuel Pipe & Strainer Gasket 12 Round	20	23414-120000	Fig 28 Item 16
Fuel Pipe & Strainer Gasket 12 Round	10	23414-120000	Fig 28 Item 23
Fuel Pipe & Strainer Sensor	2	129574-55700	Fig 28 Item 4
Fuel Pipe & Strainer Strainer	6	129574-55710	Fig 28 Item 5
Gear Housing Gasket	1	129693-01512	Fig 2 Item 2
Gear Housing Gasket	1	129470-01531	Fig 2 Item 4
Gear Housing Gasket	2	129150-01881	Fig 2 Item 8
Gear Housing Gasket 8, Round	10	23414-080000	Fig 2 Item 10
Gear Housing Oil Seal	1	129795-01800	Fig 2 Item 6
Instrument Panel Bulb	8	124617-91980	Fig 41 item 4
Lube Oil Pipe Gasket 10 Round	2	23414-100000	Fig 16 Item 19
Lube Oil Pipe Gasket 20 Round	20	23414-200000	Fig 16 Item 8
Lube Oil Sump Gasket 16	1	23414-160021	Fig 5 Item 4
Lube Oil Sump Gasket 16 Round	10	23414-160000	Fig 5 Item 20
Starting Motor - Complete Assembly	1	171008-77010	Fig 33 Item 1
Sunction Manifold Gasket 10 Round	10	23414-100000	Fig 9 Item 6
Sunction Manifold PIPE B.C.S.	1	129693-18450	Fig 9 Item 10
Turbocharger Gasket	1	129472-13520	Fig 10 Item 14
Turbocharger Pipe, Cooling Water	1	129673-49090	Fig 10 Item 25; also Fig 25 Item 11
Kohler Genset Fuel Filter	6	129470-55702(229898)		OLD #s:129470-55701 (229898)
Lube Oil System Filter 80X80L	0	129150-35151	Fig 17 Item 6	Refer to 129150-35152: (Yanmar)129150-35151 & 252834: (Kohler) 229841_ Same Filter For All
Nut & Washer for Cockpit Instrument Console	1
Kohler & Yanmar Oil Filter	18			Refer to: (Yanmar)129150-35151 & 252834: (Kohler) 229841_ Same Filter For All

Engine Temperature Mapping:

Temperatures Measured with Raytek MiniTemp in Degrees F

	At Location	At Exhuast	Commnents
Injector 1	146	157
Injector 2	143	159
Injector 3	144	156
Injector 4	144	158

Oil Sender	131
Oil Filter	132
Turbo Charger	149
Exhaust Elbow	78

	Front	Middle	Aft
Engine Block	161	161	164
Fuel Injection Pump	85

Fuel Nozzles 1	105		Fuel lines coming out of FIP
Fuel Nozzles 2	116
Fuel Nozzles 3	110
Fuel Nozzles 4	120

Valve Cover	130-150
Heat Exchanger	120

Replacement Suggestions:

1) Use Large SS Washers supplied in Spares Kit for Shaft Lock to spread apart drive shaft monting flange for removal and insertion of Flange. Remove all bolts (11) and place SS washer in split on flange and by inserting and tightening the end two bolts of the 6 drive shaft tightening bolts, you can easily remove and insert the drive shaft flange by hand without tapping with a hammer.

2) Slide off drive shaft flange and remove keyway. To remove the keyway, remove the set screw and then use the Special SS Extraction Screw labeled "Extraction Screw for Drive Shaft Flange" supplied in the Spares Kit for the Shaft Lock to extract the keyway from the drive shaft. Use a socket & wrachet to tighten the Special SS Extraction Screw until the keyway pops out

3) When reattaching drive shaft flange, align the flange with the keyway and slide the flange over the shaft making sure you use the SS Washers supplied in Spares Kit for Shaft Lock to spread apart the flange. Move the flange over the drive shaft until the center alignment hole in the flange exposes the dimple in drive shaft. Tighten the center alignment bolt (This is the bolt with the retaining wire attached through the head of the bolt.

1) See Special Notes: for removing / replacing PYI Dribless Shaft Seal

2) See Special Notes: for removing / replacing Shaft Lock