TAMD63P Heat exchanger backflush

[sprocker]

Hi All,

I'm getting overheating on one of my TAMD63P's at high revs so am looking to backflush with RydLime.

My basic thoughts were 12v pump sucking from a bucket of Rydlime solution, and flushing back towards the raw water side so as not to push any debris forwards.

I'm a little unsure about what/where I need to disconnect to get the Rydlime solution into the heat exchanger system.

Can anyone point me in the direction of a 'How To' ? I have done some searching and can't find much info on the TAMD63.

 

[volvopaul]

Hi Andy , 63 starboard one not easy to get at , port ok . You need a 2 inch fitting each end , attach at gear cooler pipe and then remove rubber pipe at sea water pump to return to bucket ,
Sadly in past jobs I’ve found the intercoolers that bad they need stripping and rod tubes .
Has this shown onsurvey ?

 

[sprocker]

Hi Andy , 63 starboard one not easy to get at , port ok . You need a 2 inch fitting each end , attach at gear cooler pipe and then remove rubber pipe at sea water pump to return to bucket ,
Sadly in past jobs I’ve found the intercoolers that bad they need stripping and rod tubes .
Has this shown onsurvey ?

Hi Paul,

Thankyou for that, luckily it's the port engine!

Yes it was the only thing that showed up on the survey so I'm very pleased.

 

[No Regrets]

Rydlyme will remove all the calcification and crustaceans plus a few other things extremely effectively. You won't need to remove them afterwards unless there are bits of impeller jammed in!

I removed the exhaust elbow feed pipe (highest point!) and ran water out of exit pipe from the raw water pump into the bilge, and picked it up with a 12v pump from the bilge. Once finished, ran the old rydlyme into the strainer to get rid of it.

Run your pump for around 3 hours at a good strength and it will remove every spec of limescale! You can also run it in the antifreeze system to flush that out, you might be surprised what comes out...

 

[Bandit]

Here is how we/I do it:
Rydlyme comes in 20 litre cans.

You should use say 10 litres at a time.

Get a large plastic box capacity say 30 to 40 litres that will fit between the engines.

Remove impeller from pump and replace cover plate

Get a 12 volt Sureflo type diaphragm pump suck Rydlyme from box and pump to inlet hose for seawater impeller pump .

Run return after gear box cooler to plastic box of Rydlyme and circulate through for an hour or so .

Rydlyme foams up severely when fresh and later practically no foam.

When Rydlyme is fresh it is black when it is spent it is clear.

I would run two lots of 10 litres through each engine. First one then a fresh batch.

Have plenty of rags to hand.

You will need to think about hoses and adaptors for sizes of tube etc.

 

[sprocker]

Thankyou all, excellent instructions, I'll take a look tomorrow and see if it is clear to me where the inlet and outlet points will be.

 

[John100156]

Dont forget to remove your remove your engine anodes.....