Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 01-10-2010, 18:56   #1
Registered User
 
jglauds's Avatar

Join Date: Jan 2008
Location: Washington, DC
Boat: Orana 44
Posts: 164
Wiring Electric Fuel Pump into Volvo D1-30

Hi from Tonga:

We continue our circumnavigation despite the best efforts of our port engine to leave us driving in circles. This time I think it's the fuel pump that seems to lack the power to pull the fuel up -- I had the same issue on my starboard engine, and in addition to replacing the mechanical pump, I'm going to install an electric pump between the primary and secondary fuel filters to keep the fuel flowing no matter what.

Ideally, I'd be able to wire it into something that is only powered when the engine is running ... but the Volvo D1-30 I have does not have a dedicated ignition key -- the battery runs through the main switch to an EVC -- Electronic Vessel Control -- panel, which has on/off, start, stop, and alarm acknowledgment buttons. I press the on/off, and that enables the start button. When I stop the engine, I also then have to press the on/off button to put the EVC back to sleep (I leave the main switch on; it's tough to access).

The wiring harness from the EVC is six wires, and I'm loathe to break it open since I'm afraid that I'll miss something that may be embedded in the circuitry inside the EVC.

Any ideas of how to wire this fuel pump? I would prefer not installing a stand-alone switch for it -- much prefer an approach that relies only on the existing EVC electronics.

Many thanks to all.

/jon
__________________

__________________
jglauds is offline   Reply With Quote
Old 01-10-2010, 19:25   #2
Registered User

Join Date: Jun 2005
Posts: 1,901
Do not cut into an EVC harness. You'll gain nothing. It's a 5v communication bus similar in theory to Cat5.

You should have an accessory relay available at the main station.
__________________

__________________
never monday is offline   Reply With Quote
Old 01-10-2010, 20:11   #3
Senior Cruiser

Cruisers Forum Supporter

Join Date: Aug 2009
Location: between the devil and the deep blue sea
Boat: a sailing boat
Posts: 17,314
Quote:
Originally Posted by jglauds View Post
Hi from Tonga:

I'm going to install an electric pump between the primary and secondary fuel filters to keep the fuel flowing no matter what.
???

What about the primary pump then?

If it is broken - the electric one may not help.

If it is good - the primary pump may not like the suction on the pressure side.

Unless your set-up is different. Ours is: primary filter then primary pump then secondary filter.

barnie
__________________
barnakiel is offline   Reply With Quote
Old 02-10-2010, 09:32   #4
Moderator Emeritus
 
GordMay's Avatar

Join Date: Mar 2003
Location: Thunder Bay, Ontario - 48-29N x 89-20W
Boat: (Cruiser Living On Dirt)
Posts: 31,580
Images: 240
Electric fuel pumps must only operate when the engine is running; hence an Oil Pressure Safety Switch is required to protect against the possibility of someone accidentally letting the ignition switch in the "On" position, which (without an oil pressure safety switch) would let the fuel pump pressurize the fuel system while the boat is left unattended. The safety switch deactivates the electric fuel pump any time that the engine is not actually running (and producing oil pressure).
__________________
Gord May
"If you didn't have the time or money to do it right in the first place, when will you get the time/$ to fix it?"



GordMay is offline   Reply With Quote
Old 02-10-2010, 11:22   #5
Moderator
 
noelex 77's Avatar

Cruisers Forum Supporter

Join Date: Jul 2007
Location: Living on dirt waiting for our new yacht to be built.
Boat: Half built Bestevaer.
Posts: 10,619
Quote:
Originally Posted by GordMay View Post
Electric fuel pumps must only operate when the engine is running; hence an Oil Pressure Safety Switch is required to protect against the possibility of someone accidentally letting the ignition switch in the "On" position, which (without an oil pressure safety switch) would let the fuel pump pressurize the fuel system while the boat is left unattended. The safety switch deactivates the electric fuel pump any time that the engine is not actually running (and producing oil pressure).
Gord I hate to contradict anything you say as you are always such a fountain of knowledge, but isnít the electric fuel pump is nice to have when starting the engine, before the oil pressure has closed the oil pressure switch?
Wired to the ignition would be more sensible.
This is how many Yanmar engines come from the factory so I would be surprised if it contravenes regulations.
__________________
noelex 77 is offline   Reply With Quote
Old 02-10-2010, 12:08   #6
Moderator Emeritus
 
GordMay's Avatar

Join Date: Mar 2003
Location: Thunder Bay, Ontario - 48-29N x 89-20W
Boat: (Cruiser Living On Dirt)
Posts: 31,580
Images: 240
Quote:
Originally Posted by noelex 77 View Post
... Wired to the ignition would be more sensible ...
Right.

It’s always a good idea to place a safety switch in the circuit when installing an electric fuel pump.
Wiring the switch through the starter solenoid circuit energizes the pump on engine start-up. After the engine is running, the switch continues to provide power to the pump as long as there is oil pressure to keep the switch turned on.
__________________
Gord May
"If you didn't have the time or money to do it right in the first place, when will you get the time/$ to fix it?"



GordMay is offline   Reply With Quote
Old 03-10-2010, 12:54   #7
Registered User
 
jglauds's Avatar

Join Date: Jan 2008
Location: Washington, DC
Boat: Orana 44
Posts: 164
Thanks all -- it's the starter solenoid circuit I'm looking for -- I've got a harness running from the EVC to the engine, and it appears to include the starter solenoid circuit, but not sure how to break into it ... this is new territory for me re: electronics.

Is there a path from the control box on the engine itself to the starter motor? Do I need to intercept the harness before it hits the control box? I may wait for a competent mechanic ...

The instructions call for an oil pressure safety switch, which further complicates self-installation

Thanks for any last bits of advice!

/jon
__________________
jglauds is offline   Reply With Quote
Old 07-01-2013, 16:58   #8
Registered User

Join Date: Dec 2012
Boat: Fountaine Pajot Orana 44
Posts: 48
Re: Wiring Electric Fuel Pump into Volvo D1-30

My apologies for reviving a nearly three y/o thread but wondered, Jon, if you ever installed the electric pump? (I have the same motors!)

Thanks - Rob
__________________

__________________
rmaher is offline   Reply With Quote
Reply

Tags
electric pump, fuel, fuel pump, 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
Yanmar 2gmf Electric Fuel Pump madmac Engines and Propulsion Systems 1 28-05-2010 17:43
Electric Fuel Pump Location? Mike Sibley Engines and Propulsion Systems 26 29-09-2009 16:13
Looking for Yanmar YS Electric fuel pump Chief Engineer Engines and Propulsion Systems 0 21-07-2009 18:43
YSB12 Electric Fuel Pump Taidog Engines and Propulsion Systems 3 15-06-2009 20:34
Electric Fuel Pump for Yanmar 3 Cylinder? quartersplash Engines and Propulsion Systems 1 07-06-2009 08:58



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 21:16.


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.