Overspeed switch

We’re currently working with a long-standing offshore client to carry out the urgent test and calibration of an overspeed switch from their #Detroit 8V71 turbine starter. The trip test speed was unknown by the operator, and with all engine protection devices, it is vital to ensure it will work safely and effectively when called upon. To avoid actually overspeeding the engine (or worse, should the switch fail), the switch was sent to us to carry...

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Injector tube supersession

Recently we were completing the health check and maintenance routine on one of four back-up generators and found the result of problems caused because a much-needed upgrade hadn’t been carried out. It was obvious there was a problem when we removed the injectors for a borescope inspection on these Mirrlees Blackstone engines and found a pool of coolant on top of the piston. Looking into the cause, we found the injector tube had cracked, and the...

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Woodward PSG governor overhaul

Woodward PSG governor overhaul

Last week we were sent a couple of Woodward PSG governors in need of an overhaul.They’ve been in constant use on a ferry for the last 16 years without ever leaving the engines and the whole exercise has highlighted what can happen if these vital assemblies do not have any routine maintenance.Knowing the importance of effectively performing governors, the vessel owners had fitted new units but wanted the old units overhauled, so they could...

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Engine vibration damage

Engine vibration damage

One of our client’s Deutz DFP6 1013 C20 fire pumps failed the other day, and our engineer Andy has been looking into the root cause.And what he’s found is a great example of how much damage can be caused even on low hours engines and how it can be prevented.The engine arrived at Bartech after excessive movement was found on the crankshaft, and an assessment was needed to see if the engine could be repaired, or if a replacement was...

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Excessive engine wear

Excessive engine wear

Our engineers are currently doing some servicing and rectification work on an MTU 396 engine, and I thought it was worth sharing some feedback from them. Whilst carrying out the inspection of the top end of the engine, they’ve come across the common problem of excessive wearing, which is a result of ineffective lubrication. I won’t go into detail about the important role lubricating oil plays in your engine; I’ve got no doubt...

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