Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 13-06-2014, 08:58   #1
Registered User

Join Date: Jun 2009
Location: still in a roll of fiberglass around Cape Town
Boat: Leopard 40 (new model)
Posts: 1,201
Bleeding Volvo D2-40 cooling circuit

Has anyone flushed and refilled with coolant one of these new Volvos? Any tips regarding how to purge air out of the system?

Is it correct that you have to fill from the plastic overflow reservoir, (lift that reservoir also) and cannot open a cap in the block itself?

Thanks!

Charlie
__________________

__________________
svlamorocha is offline   Reply With Quote
Old 17-06-2014, 17:49   #2
Marine Service Provider
 
OceanSeaSpray's Avatar

Join Date: Aug 2013
Location: New Zealand
Boat: Custom 13m aluminium sloop
Posts: 416
Re: Bleeding Volvo D2-40 cooling circuit

I have filled my D2-40 from new and there is no need to bleed air from the block. If you look closely, the cooling system is very well designed with no airlocks and my engine is installed dead horizontal.

Fill from the small plastic header tank in place and let the coolant find its way into the block. It takes a few minutes. From memory, there wasn't even a level drop in this tank when I started the engine, so don't overfill to allow for it.

As long as you don't have a weird installation with a saildrive and the front of the engine lower than the back, it should be a complete non-event.

Regards.
__________________

__________________
OceanSeaSpray is offline   Reply With Quote
Old 17-06-2014, 18:38   #3
Senior Cruiser
 
colemj's Avatar

Cruisers Forum Supporter

Join Date: Oct 2005
Location: Presently on US East Coast
Boat: Manta 40 "Reach"
Posts: 10,049
Images: 12
Re: Bleeding Volvo D2-40 cooling circuit

I don't have direct knowledge of the D2-40, but lots of experience with its predecessor, which is quite similar.

If you have water heater loops off the engine, you will need to make sure these do not air lock. Other than that, I don't see why there would be any airlocks that wouldn't be cleared through the heat exchanger tank as normal.

I don't see any reason to have to fill it from the overflow reservoir. That just leads straight to the fill cap anyway. In fact, that seems like a very slow and complicated way to fill it. Just fill like normal through the fill cap. Pour somewhat slowly so that air can gurgle to the top as it fills. Just like any other engine.

A saildrive will have nothing to do with it - that isn't part of the coolant system nor does it cause the engine to be at an angle.

Your Volvo owners manual should have coolant change instructions.

Mark
__________________
www.svreach.com

You do not need a parachute to skydive. You only need a parachute to skydive twice.
colemj is offline   Reply With Quote
Old 17-06-2014, 19:03   #4
Marine Service Provider
 
OceanSeaSpray's Avatar

Join Date: Aug 2013
Location: New Zealand
Boat: Custom 13m aluminium sloop
Posts: 416
Re: Bleeding Volvo D2-40 cooling circuit

Quote:
Originally Posted by colemj View Post
I don't have direct knowledge of the D2-40, but lots of experience with its predecessor, which is quite similar.

...

I don't see any reason to have to fill it from the overflow reservoir. That just leads straight to the fill cap anyway.

...

A saildrive will have nothing to do with it - that isn't part of the coolant system nor does it cause the engine to be at an angle.

Your Volvo owners manual should have coolant change instructions.

Mark
Something could be said about speaking from actual experience... try to find the "fill cap" on a D2-40 and come back. These engines are filled by the header tank, where the only cap to be found is located, and it works extremely well. The new D-series engines are rather different than the old MD ones.

Saildrive installations sometimes result in the engine being installed back to front in the boat, and... sometimes with the front of the engine slightly lower than the back, but in fairness I think I can only remember one such instance. They are normally flat.
__________________
OceanSeaSpray is offline   Reply With Quote
Old 18-06-2014, 07:05   #5
Registered User

Join Date: Jun 2009
Location: still in a roll of fiberglass around Cape Town
Boat: Leopard 40 (new model)
Posts: 1,201
Re: Bleeding Volvo D2-40 cooling circuit

Quote:
Originally Posted by OceanSeaSpray View Post
I have filled my D2-40 from new and there is no need to bleed air from the block. If you look closely, the cooling system is very well designed with no airlocks and my engine is installed dead horizontal.

Fill from the small plastic header tank in place and let the coolant find its way into the block. It takes a few minutes. From memory, there wasn't even a level drop in this tank when I started the engine, so don't overfill to allow for it.

As long as you don't have a weird installation with a saildrive and the front of the engine lower than the back, it should be a complete non-event.

Regards.
Thanks. I was helping someone who is far away; apparently the airlock was not in the engine proper but in the (add-on) water heater, which is fairly high (top of it level with top of engine). This "theory" is compatible with what you stated. Thanks again!
__________________
svlamorocha is offline   Reply With Quote
Old 18-06-2014, 07:14   #6
Registered User

Join Date: Jun 2009
Location: still in a roll of fiberglass around Cape Town
Boat: Leopard 40 (new model)
Posts: 1,201
Re: Bleeding Volvo D2-40 cooling circuit

Quote:
Originally Posted by OceanSeaSpray View Post
Something could be said about speaking from actual experience... try to find the "fill cap" on a D2-40 and come back. These engines are filled by the header tank, where the only cap to be found is located, and it works extremely well. The new D-series engines are rather different than the old MD ones.
+1. I attach photo just to make the point.

Only caveat is that depending on where the plastic tank is installed (this is specific to each installation), there may be a high point in the hose between plastic tanks and heat exchanger, hence when filling the system from scratch you need to lift the plastic tank to eliminate that high point and let air out.
__________________
svlamorocha is offline   Reply With Quote
Old 18-06-2014, 07:24   #7
Senior Cruiser
 
colemj's Avatar

Cruisers Forum Supporter

Join Date: Oct 2005
Location: Presently on US East Coast
Boat: Manta 40 "Reach"
Posts: 10,049
Images: 12
Re: Bleeding Volvo D2-40 cooling circuit

Quote:
Originally Posted by OceanSeaSpray View Post
Something could be said about speaking from actual experience... try to find the "fill cap" on a D2-40 and come back. These engines are filled by the header tank, where the only cap to be found is located, and it works extremely well. The new D-series engines are rather different than the old MD ones.
Fair enough. I was correct about the lock in the water heater though

Mark
__________________
www.svreach.com

You do not need a parachute to skydive. You only need a parachute to skydive twice.
colemj is offline   Reply With Quote
Old 18-06-2014, 11:35   #8
Registered User

Join Date: Jun 2009
Location: still in a roll of fiberglass around Cape Town
Boat: Leopard 40 (new model)
Posts: 1,201
Re: Bleeding Volvo D2-40 cooling circuit

Thanks!

Sent from my GT-I9300 using Cruisers Sailing Forum mobile app
__________________

__________________
svlamorocha is offline   Reply With Quote
Reply

Tags
cooling, volvo

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
bleeding volvo 2002 engine Popeye99 Engines and Propulsion Systems 8 09-07-2013 10:53
Bleeding the cooling system - Yanmar 4JH4AE dsteinfeld Engines and Propulsion Systems 4 08-06-2013 17:47
Volvo 2002B Fresh Water Cooling Langusto Monohull Sailboats 1 18-08-2010 11:57
Engine Cooling Circuit - Choices sildene Engines and Propulsion Systems 4 19-08-2009 22:34
Perkins 4-236 cooling water circuit seaclusion Engines and Propulsion Systems 0 13-01-2007 06:07



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 00:23.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.