Marine

RoRo Vessels

Deutz MWM TBD 234 Full Overhaul

We were called to attend the vessel in the Netherlands to investigate problems.

Upon investigation, it was found on cylinder A3 that the pushrod exhaust valve was completely cracked, and the push rod inlet valve was bent.

All rocker covers were removed in order to inspect the valve operating gear and the remaining pushrods.

It was found that more push rods were bent.

The inlet valve push rod on cylinder A6 was extremely bent - it was unable to completely rotate in the aperture.

To avoid major failure with catastrophic damage, the engine was shut down and was sent to us for a complete overhaul.

Crew Transfer Vessels

6000hr service on both MTU 12V 2000 main engines

As approved service dealers for MTU UK, we have carried out extensive work supporting the 2000 series engines including 6000hr services, which incorporate:

• • Injector replacement
• • Borescope
• • Valve clearance check
• • Belt change
• • Turbo replacement
• • All filter changes
• • Oil and coolant change

Following the service work, the engines are tested using the MDEC system and diagnostic software.

Ferries

Retrofit new Woodward UG25+ Governors

On arrival at the vessel the old Woodward 3161 governor from number 2 main engine, a Wartsila 5L20 ready for the upgrade to a UG25+ model.

Once installed it was connected up to the engine fuel racks, all linkages were checked and the governor was set at dead rack.

To support the new style governor, a new control panel was installed and wired into the vessels original wiring.

Following the governor upgrade on number two engine, we then installed a new control box to number 4 main engine.

On completion of both workscopes, all running checks were carried out tot customer satisfaction before sign off and full report issued.

Tugs

Engine mounts exchange and engine alignment

When the old mounts were taken out and the new ones installed it was apparent that there was an issue as we couldn’t get the required height.

The client supplied mounts were too tall and could not be lowered.

Bartech discussed the issue with the mount suppliers in Holland and then arranged a meeting with the UK reps.

We travelled to Kent for the meeting which was to see if there was anything we could do regarding lowering the mounts further, however, they were pre-tensioned and could not be lowered.

It soon became apparent that the mounts had not been installed correctly in the first instance when the vessel was made.

Not only was the tension not relieved prior to installing but chockfast was used to install them.

Luckily when we chipped the chockfast away we gained enough clearance to install the mounts correctly.

The client who had suffered inherent vibration issues was extremely pleased and appreciated that we did not just walk away, instead, we looked into why and found a resolution.

Offshore Support Vessels

TPS57E01 Turbocharger 12,000 Service - 48 hr turnaround

The main issue for this service was the timing.

We had to meet the vessel on docking, fully service the turbocharger, take it back and install it before the vessel was due back out.

The time scale was 48 hours.

Very tight time frame but we completed the service with time to spare.

Again a full-colour report was issued for the class certification on the vessel.

Freight

Governor issue investigation

This merchant container vessel berthed at Tilbury and had reported an issue with generator number 4 governor speed and load sharing issues.

A Bartech engineer was asked to attend the vessel.

An initial visual inspection was carried out, which indicated the clutch for the governor motor was slipping.

This would cause the reported problem of load balancing with the other engines.

Our engineer rectified this issue and, because there are 4 of the same governors installed on the vessel, recommended a ships spare is made available.

Dredgers

Servicing and OEM spares to gain class classification sign-off

We were contacted by the Technical Superintendent who was a little stuck.

He had been using the OEM for his servicing and maintenance, however, on the previous service the OEM did not supply a detailed report and he found it difficult to get the classification sign off on the vessel because he could not prove the work.

We serviced the 3 CAT C32 engines using OEM spares and Bartech CAT trained engineers, produced an in-depth report and saved the client money as our labour was cheaper.

He had no issue getting the class classification sign off!

Super Yachts

Paxman 12 RPHCZ MK7 Extended Top End Overhaul

Once our engineers arrived on board the private yacht in Italy, they continued the engine dismantle which the vessel engineers had already begun.

Further dismantling of the exhaust system and other items was carried out to enable easy packing and return to Bartech Marine for rectification work that could not be carried out onboard.

During the fitting of the cylinder heads and after checking piston bumper clearances, cylinder head gaskets of 0.045 thou inch were fitted.

Upon completion of the overhaul, the engine underwent sea trials for a total of thirty hours at full sea speed and varying ship’s load.

Life Boats

Turbo Actuating Ram Modification on both the port and starboard engines

As standard, all MTU 10V2000M94 engines require this modification in order to eliminate a fault.

We attended this lifeboat to carry out the modification.

Firstly, the following items were replaced on both engines:

1. Ram

2. Linkage

3. Lever

4. Bracket

5. Two oil pipes connected to the ram

Once this had been completed, the new parameter settings were uploaded onto both of the ECU’s from the MTU laptop and an engine test was carried out with the Diasys connected to take a recording on both engines to confirm the ram was operating correctly.

Fishing

Overhaul of the Stork-Wärtsilä 6SW280 main engine and auxiliaries

This was completed whilst the vessel was in dry dock as part of its planned schedule of maintenance.

The dismantled components were sent to Bartech for overhaul, including the governor and turbocharger.

After completion and reinstallation, a sea trial was run, the procedure was as follows:

• One hour and a half with 20% load

• One hour and a half with 40% load

• One hour and a half with 60% load

• 30 mins with 30% load whilst the dredge was dropped

• One hour and a half with 100% load