yanmar 6lp intercooler

alpha · 12 January 2016, 16:59

Could any of you yanmar guys give me some advice?
I am servicing the intercooler.
Tubestack is being stubborn,doesn't want to budge.
Question is how remove tubestack from intercooler without damage?

Bigtalljv · 12 January 2016, 18:31

I have no experience with this particular item or diesel engines in general.

a really big ultrasonic cleaner? It might be worth a drive to find somebody who could do that. looks like it's going to be hard to put any pressure on without damaging. the drawing makes it look like there isn't much surface area to bind but what's there is locked up by corrosion? A block of wood and some gentle taps on the open end with the persuader? break it free?

alpha · 12 January 2016, 19:36

Quote:

Originally Posted by Bigtalljv

I have no experience with this particular item or diesel engines in general.

a really big ultrasonic cleaner? It might be worth a drive to find somebody who could do that. looks like it's going to be hard to put any pressure on without damaging. the drawing makes it look like there isn't much surface area to bind but what's there is locked up by corrosion? A block of wood and some gentle taps on the open end with the persuader? break it free?

I tried tapping on it,I don't want to get to carried away with a hammer.
Was thinking of maybe putting it in my shop press, curious how much force is typically
needed to free it.

yam man · 12 January 2016, 20:46

Pick the o-ring out of the ends of coolers . Then soak each end in de scaler . Little tap should start moving

alpha · 12 January 2016, 21:27

Quote:

Originally Posted by yam man

Pick the o-ring out of the ends of coolers . Then soak each end in de scaler . Little tap should start moving

Will give it a try.
thanks yam man

captainpugwash · 15 January 2016, 07:21

I have a Yanmar 6LY2A-STP.
We used the local engineering workshop to do the very same job with it's 60T press.
Just make sure that you have a big piece of foam beneath the press so it has a nice soft landing if you cannot catch it.
Ours came out fine with no damage at all.

beamishken · 15 January 2016, 08:11

As yam man says pick out the o rings and try soaking it
Boiling water over the ends might help to swell the aluminium
The problem is the aluminium corrodes and swells trapping the core,if left it continues swelling and splits the case along its length
A pain in the ass job but worth doing on a regular basis to save the cost of a new cooler.