perkins 4107 gearbox quiery

[castaway]

My Perkins has a Nicor hydraulic box with a separate reduction unit. After returning from Cherbourg a day so back and having run the engine for the final few hours I was sitting in Lulworth Cove enjoying an 'apres sail' and thought I would "check the levels".

Wish I hadnt...The Box had what appeared to be an emulsion in it as though it had had water in the oil...

So I put down my glass and drained off the oil... as it's almost impossable to collect it, I just let it run into the tray then extract it with 'Pig mat', but I could see that the last of the oil had a creamy texture to it... Re filled with SAE 30 and ran it all the way back to Portsmouth and checked it again, only to find same creamy stuff again. Panic starts to set in as these boxes are water cooled.

Drained the oil again but this time managed to capture some oil in a saucer and recovered for examination......Now.....the oil after 30 mins or so started to return to 'normal', making me think that the oil was simply 'aerated'...but Ive never noticed this before.

I have topped up the oil recently with SAE 30 instead of SAE20 as recomended, as its impossable to get SAE20 but it is not detergent oil...

Any ideas please ( not expensive ones pls!)

Thanks Nick

<A target="_blank" HREF=http://www.yachtsite.co.uk/fairweather>http://www.yachtsite.co.uk/fairweather</A>

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[Sybarite]

I read somewhere not so long ago - perhaps in a Seagull manual - that this emulsion is a normal state of affairs in a gearbox. However I am not a mechanic and can not give any opinion on your gear box.

John

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[dickh]

It's only normal in a Seagulls gearbox as there no oil seals and relies on the bearing/shaft fit, but inevitably water gets in. Seagulls use a very heavy oil, SAE 90 or 140 depending on the model, which should be changed yearly, but even so the oil is always emulsified when drained.

<hr width=100% size=1>dickh
I'd rather be sailing... /forums/images/icons/smile.gif

 

[david_bagshaw]

For a supply of the correct oil , would suggest you try <A target="_blank" HREF=http://www.morris-lubricants.co.uk/contact.htm>http://www.morris-lubricants.co.uk/contact.htm</A>

who do a wide range of lubricants for gearboxes etc


As to water leak in the oil cooler, if this had been taking place the oil volume would have increased as well, you could have the cooler lightly pressure tested though. I am sure bowmans would oblige, who made most of the yachty coolers any way.

<hr width=100% size=1>David
<A target="_blank" HREF=http://www.euroboating.net>http://www.euroboating.net</A>

 

[sailorman]

i have a re-built t.m.p. hydraulic box 4 sale c/w/ bell housing 4 the 4108.
should fit the 4107 as virtually the same engine.

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[sailorman]

i have re-built t.m.p. hydraulic box 4 sale it comes c/w bell housing trom a 4108, that is virually the same engine as the 4107.

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[noname]

hi just seen your posting for a Tmp box for sale,have you still got it?
I am looking for one to rplace mine,thanks dave

 

[sailorman]

Sold
see the other post relating to Perkins 4107/8

 

[Refueler]

It was me asking for noname !! just in case he didn't see the post ...

 

[sailorman]

the guy who bought it got a really good deal /forums/images/graemlins/ooo.gif

sold the engine for £500 as well. proberbly only rings or re-bore needed doing but where do you draw the line /forums/images/graemlins/confused.gif

 

[Billjratt]

It's seawater cooled, so if you had a leak there would be traces of oil in the pipework downstream of the box and maybe, if you have a tell-tale, there too.
Contact here http://www.thameswaymarineproducts.co.uk/index.htm
really helpful and a good site for diy info.

 

[sailorman]

Sea water cooled with copper pipes in the system /forums/images/graemlins/mad.gif /forums/images/graemlins/mad.gif

i know it cost me £1100 /forums/images/graemlins/blush.gif

 

[Billjratt]

tell me about it!
http://www.bluemoment.co.uk/phpBB2/viewtopic.php?t=3526&highlight=timebomb.
Plastic pipes now!

 

[sailorman]

there is also a "Perkins" spare part to replace the brass / bronze nipples on the box with zinc ones /forums/images/graemlins/wink.gif