Return to the home page...

Go Back   Moyer Marine Atomic 4 Community - Home of the Afourians > Discussion Topics > Safety

Reply
 
Thread Tools Display Modes
  #1   IP: 72.220.37.5
Old 05-17-2010, 03:34 PM
ramon ramon is offline
Member
 
Join Date: May 2010
Posts: 3
Thanks: 0
Thanked 0 Times in 0 Posts
oil pressure safety switch

Hi,
i'm new here.
have a newport30 (1979) with atomic 4 (don't know how old).
The cover of the oil pressure safety switch broke and having oil squirt out when engine runs. It seems that it was not connected to begin with as there are no wires I can see that would have connected to it. No loose wires. I'm thinking about taking the rest of the switch off and just putting a brass cap on it.

Before I do that, I'd like to know exactly what does the oil pressure safety switch do?? I think it just shuts off the fuel pump in case oil pressure drops, is this correct? Is it an ok idea to go without one since It wasn't connected anyway?

Thanks in advance for any thoughts on the subject.
Reply With Quote
  #2   IP: 71.118.13.238
Old 05-17-2010, 04:15 PM
Dave Neptune Dave Neptune is online now
Afourian MVP, Professor Emeritus
 
Join Date: Jan 2007
Location: Grove, Oklahoma
Posts: 5,035
Thanks: 711
Thanked 1,289 Times in 839 Posts
Exclamation Safety

ramon, if you have an electric fuel pump and you are safety consious it should be hooked up. That's why they call it a safety switch, regardless of what the P/O did. If you have a mechanical pump you don't need one.

Dave Neptune
Reply With Quote
  #3   IP: 174.21.136.177
Old 05-17-2010, 04:20 PM
charles@pricefarrington.c's Avatar
charles@pricefarrington.c charles@pricefarrington.c is offline
Senior Member
 
Join Date: Aug 2008
Location: Sammamish, Washington
Posts: 199
Thanks: 0
Thanked 0 Times in 0 Posts
Ramon:

Yes, it probably is the oil pressure shut off for the fuel pump. I would reconnect it. Without mine, my engine would have burnt up when my oil pressure gauage was not working, it showed fine, but there was little oil and the engine shut off. Saved buying a new engine vs. a buying a new oil sensor sender.
__________________
74' Ranger 29
Reply With Quote
  #4   IP: 72.220.37.5
Old 05-17-2010, 04:35 PM
ramon ramon is offline
Member
 
Join Date: May 2010
Posts: 3
Thanks: 0
Thanked 0 Times in 0 Posts
Thank you both!

How would I know if I have an electric vs mechanical fuel pump?
What do they look like?

Thanks again,
ramon.
Reply With Quote
  #5   IP: 76.7.125.222
Old 05-17-2010, 05:00 PM
Marian Claire's Avatar
Marian Claire Marian Claire is offline
Afourian MVP
 
Join Date: Aug 2007
Posts: 1,797
Thanks: 33
Thanked 129 Times in 94 Posts
Check out the pics on the on-line catalog. http://www.moyermarine.com/cgi-bin/s...rebuilder.html Dan S/V Marian Claire
Reply With Quote
  #6   IP: 68.110.33.194
Old 05-17-2010, 05:05 PM
roadnsky's Avatar
roadnsky roadnsky is offline
Afourian MVP
 
Join Date: Dec 2008
Location: Lake Mead, NV
Posts: 3,104
Thanks: 24
Thanked 467 Times in 309 Posts
Or, I can do it for you...

The mechanical pump is the 1st pic (blue background)
The electric will likely look like the other two pics and will be mounted either on the engine or a bulkhead.
Attached Images
   
__________________
-Jerry

'Lone Ranger'

1978 RANGER 30
Reply With Quote
  #7   IP: 72.220.37.5
Old 05-17-2010, 05:25 PM
ramon ramon is offline
Member
 
Join Date: May 2010
Posts: 3
Thanks: 0
Thanked 0 Times in 0 Posts
Got it.
So its the electrical then!

I'll order the oil pressure safety switch today.

Thanks again for all your help,

ramon.
Reply With Quote
  #8   IP: 24.61.219.184
Old 05-18-2010, 10:34 AM
David Masury's Avatar
David Masury David Masury is offline
Senior Member
 
Join Date: Oct 2004
Posts: 265
Thanks: 0
Thanked 5 Times in 5 Posts
The oil pressure safety switch is a great upgrade with the electric fuel pump..
This year my faithful A4 started right up after dormancy, and I usually start and run it several times before launching. This past weekend the A4 fired right up and ran for five minutes and then died. Well, that set in motion the search and rescue mode. I checked everything except the obvious.

My boat is now 35 years old and after replacing the electric fuel pump with my spare and making sure that all fittings were secure...nothing happened.

The next day, I came back to the boat armed with every tool and meter I own only to find that the ground wire connector to my ground buss was corroded at the engine attachment. I re-routed the ground wire to my battery ground plate and the electric fuel pump clicked away.

Net result was that the ground wire connector while tight was corroded enough that good contact was not made..... what does this have to do with the oil pressure safety switch... well, the switch only turns on the positive side the the fuel pump and when the ground goes away, there are more things to check.

David
Reply With Quote
Reply

Thread Tools
Display Modes

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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
oil pressure safety switch morgan_out_island Fuel System 5 05-25-2023 10:53 AM
Wiring of Oil Pressure Safety Switch forcenine Electrical 25 07-01-2021 08:57 AM
Engine shuts off dwoodriff Troubleshooting 24 11-23-2008 10:50 PM
Redundant oil pressure safety switches? skhorleb Fuel System 1 05-19-2007 07:53 AM
wiring question- oil pressure safety switch? msmith10 Electrical 2 09-10-2006 08:03 AM


All times are GMT -4. The time now is 06:37 PM.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2024, vBulletin Solutions, Inc.


Universal® is a registered trademark of Westerbeke Corporation

Copyright © 2004-2024 Moyer Marine Inc.

All Rights Reserved