[Johan]

Hi Tony, From the dashboard the pressure is around 22 or 23 bar, just like the starboard engine. I don’t know if this is also the case when I suddenly give full throttle, but with quiet use this remains constant.

[Johan]

Hi Eric,
I have the boat from 2017 and have always had vibrations but after the repair it has improved. What strikes me is that above 2000 the more revs you make the less the engines vibrate. Both engines are above 2500 rpm (I’m going to watch this for you, this may take a while because I’m busy with work) I do have some film material about the vibration for the repair but I can not add this maybe I can these Appen if I get your mobile number. You can also call me afterwards.

[Johan]

Tony,
Measurements were taken on the dashboard and also on the coupling itself with an external meter. Now the pressure is back as it should be 23/24 Bar.
I am still worried about the black oil. The oil is always black from the revision. Overhaul because the clutch slipped. After the revision, the oil is always black.

[Johan]

Hello Eric,

No the engine mounts have not been replaced.
Below what has been done, I hope you get it my english is difficult.

The following work on your ship
executed
Propeller shaft vibrations
Your ship hung in the crane for inspection and placed on a stand.
Screws disassembled, offered at Kramer ship screws afterwards
drove to Amsterdam for repair of both screws.
BB screw repaired and balanced, SB screw
balanced.
Shafts and bearings checked. SB rear bearing had a lot of play,
BB slightly slack. Replace both. Axles checked for runout,
shafts disassembled due to suspicion of pendulum in shaft and flanges.
Have treads cleaned and axles checked for straightness. BB
axis was within tolerance, SB was crooked. Align shaft, flanges
clocked, turned crooked. Have new flanges made. Seals
replaced and axles fitted. Nylon rings bunchers
replaced, supplied by you. Ship in water and test dangers
1.00 Tap costs and box rental 525.00 525.00
2.00 Seal 109.00 218.00
2.00 Rubber bearing shaft 50 186.00 372.00
1.00 Costs of shafts and new flanges 1236.00 1236.00
1.00 Repair costs BB screw 375.00 375.00
1.00 Balancing costs SB screw 295.00 295.00
1.00 Screw transport costs 95.00 95.00
1.00 Transport costs of axles 87.35 87.35
32.25 arb.mon Hour labor 62.50 2015.76

[Johan]

Hi Erik,
I have the same boat and last year, the drives were completely checked and parts replaced and I also have vibrations around the same speeds (also for repairs), especially on the radar bracket, which goes back and forth. I do notice a difference on deeper water and it is also much less on salt water (can also all be in my head). the boat sails the best slightly above 2000 tours.

[Johan]

I had a loss of pressure in his forward. After investigation, a specialist from ZF has discovered this damage and mounted new parts, this is the expired report (Report:
Bb gearbox flushed with gas oil, then 4 liters of new oil, filter check and cleaning
Replacement of 2 pieces of inlet rings and inlet sleeve.
Test run and sail, no details noticed during maneuvering.
Customer has paid the invoice in cash). The magnet had iron and in the filter also something of a material, but this was not magnetic. This gearbox was overhauled last year and after 3 months I changed the oil (40 hours) and then also had some iron in the filter and on the magnet, the oil was already dark then. I think there was a problem with the inlet bus back then. everything is working again now, but is it normal after 6 hours of sailing that the oil is dark with a golden glow? And can there be consequential damage caused by the metal particle? I want to rinse again with clean oil after 20 hours. See the photos there was much more metal than in the photos and still metal after refreshing.

[Johan]

Have you found out what causes the dark oil?
There was still some material in the filter and on the magnet.
I have the same problem, the part on which the pump is mounted is broken. and has released metal particle.
I have changed the oil but after 6 hours of sailing it is already gray again.

[Johan]

Before I got to the oil change the following problem arises. the gearbox is under pressure. This happens in forward, backward pressure seems to be in order. see the photos film I am unable to post. In the photos you can see the engine in forward in its 1st click oil pressure increases very slowly and sinks and floats again. The marine gear was overhauled last year.

[Johan]

Tony,
Thank you for your explanation and get the job done next week.

[Johan]

Hi Tony, I’ve read everything!
English is not my native language but I think I get it.
in your message you put O4C but those are all multi grade oils and I am sailing with my boat in a not too hot country so do I want to stick to the SAE 30 is this correct or is O4C better? can you give me a brand and type of oil which is available here in the Netherlands and what you think is the best. I have looked up some brands available here, SHELL RIMULA R3 + 30, and the manufacturer of The Marine engine oil single grade SAE 30 meets the requested specification of the ZF gearbox CD / SF says the manufacturer (see the photo), And the yanmar oil what do you think about that? I hope my questions are clear due to my bad english. thanks in advance for your time!

[Johan]

this is what can find about this oil, MOTORBOAT MOTOR OIL SAE 30 SINGLE GRADE FC-W, MPM motorboat motor oil sae 30 fc-w single grade is a mineral shipping motor oil and developed for a variety of purposes. Depending on the manufacturer’s prescription, this marine engine oil sae 30 is used in marine diesel engines, hydraulic systems and light duty gear units. This motor boat oil is also prescribed in marine reverse gears with higher power ratings.

Meets the requirements of:

* Engine oil sae 30
* Shipping engine oil
* Sae30
* Marine diesel engines

Product sheet for this engine oil sae 30
Safety data sheet for this engine oil sae 30

[Johan]

Valvoline Premium Blue 7800 15W-40 for the Cummins qsc 8.3, but I understood that a SAE 30 oil should be used for the gear Zf 280-1A. OIL SPECIFICATIONS
04A Lubricating class
Monograde oil (API CD / CE / CF-4 / CF / CG-4 / SF / SG / SH / SJ
or category ACEA A / B / E)
Viscosity range: SAE 30

[Johan]

Hi Tony,
I estimate that the fuel is 20 cm above the filter with the idea that the pickup in the tank is at the bottom of the tank, I think there is sufficient siphon action.

Tony in the story above, I give the following, Engines come at speed BB 2620 rpm and SB 2650 and consume around 97 liters per hour.

This is not in the port but on full power sailing at sea.

I see no leakage of fuel at the filters and the vacuum meters, it amazes me that I simply do not see an increase of the vacuum meter at full speed.

I assume that I have very clean fuel consumption?

First photo before sailing 2nd photo to full speed.

Gr, Johan

[Johan]

Hi Rob,

This I had already done and then the meters go up the red, but I thought that the meters always go up slightly when the engine is running. Could it be that the filters are still supper clean after 70 hours of sailing? Or would false air be sucked in? Engines come well at speed BB 2620 rpm and SB 2650 and consume around 97 liters per hour. Gr Johan

[Johan]

I have fully sailed but the vacuum meters do not come from the 0.

[Johan]

We’re going to do that Saturday! thanks.

[Johan]

And more pics.

[Johan]

More pictuers.

[Author]

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