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07-05-2022, 08:57 AM
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#1
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Guru
City: Savannah, Ga.
Vessel Name: Indigo Star
Vessel Model: 2006 Mainship 400
Join Date: Jun 2018
Posts: 527
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Racor Filter Question-
Hello,
I replaced this filter yesterday for our Genset and about an hour or so later it started leaking from the large header bolt on top. This is a Racor Model 120RMAN filter assembly (which I found the spec sheet for). I didn't have to remove the header bolt on the bracket housing in order to spin on & off the filter however it now surprisingly leaks. Guess I pinched an O-ring?
I guess I should have replaced the seals on this header bolt as well but I didnt even know they were there.
The spec sheet calls for Racor filter R12SUL but ours had a R12S filter on it.
Should I replace the filter whole assembly or just buy the Header bolt kit with the gaskets, as they are about the same price as the header bolt kit looks to be a hard find.
Thanks for your comments and suggestions.
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07-05-2022, 09:19 AM
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#2
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Guru
Join Date: Jun 2008
Posts: 4,642
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Personally I wouldn’t want anything that rusty looking on my boat.
I guess that’s my answer.
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07-05-2022, 09:27 AM
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#3
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Veteran Member
City: Juneau
Vessel Name: Sea Dog
Vessel Model: DeFever 49 Raised Pilothouse
Join Date: Aug 2021
Posts: 81
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If I spent my time replacing everything that was that rusty I would never have time to take the boat out.
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07-05-2022, 09:53 AM
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#4
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Guru
City: Fort Myers, FL... Summers in the Great Lakes
Vessel Name: Slow Hand
Vessel Model: Cherubini Independence 45
Join Date: Dec 2010
Posts: 11,050
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If it were me, I would take the bolt assembly to a hydraulic shop and just match the orings. They should be standard SAE orings. The system is only under a very minimal vacuum. Lubricate the orings with engine motor oil when putting them on the bolt and installing them through the housing.
Ted
__________________
Blog: mvslowhand.com
I'm tired of fast moves, I've got a slow groove, on my mind.....
I want to spend some time, Not come and go in a heated rush.....
"Slow Hand" by The Pointer Sisters
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07-05-2022, 10:02 AM
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#5
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Guru
Join Date: Jun 2008
Posts: 4,642
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Quote:
Originally Posted by O C Diver
If it were me, I would take the bolt assembly to a hydraulic shop and just match the orings. They should be standard SAE orings. The system is only under a very minimal vacuum. Lubricate the orings with engine motor oil when putting them on the bolt and installing them through the housing.
Ted
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Good point about lubrication. You want both the bolt and housing to slide on the ring as you tighten so you get even pressure.
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07-06-2022, 05:08 PM
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#6
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Guru
City: Savannah, Ga.
Vessel Name: Indigo Star
Vessel Model: 2006 Mainship 400
Join Date: Jun 2018
Posts: 527
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Update to issue-
The obsolete/leaking Racor model 120RMAM (that was installed by the factory i am assuming) was replaced today with a new Racor model 120AS. This was what was recommended by Parker/Racor, however they also reminded me the USCG requires the fuel filter to have a metal bowl and the plastic bowl replaced (new model 120AS comes with a plastic bowl) with a metal one or just swapped over in my case.
So the wife is happy and we are comfortably at a mooring ball in Port Washington...NYC was not my cup of tea...wow.
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07-06-2022, 05:37 PM
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#7
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Guru
City: Seattle
Vessel Name: AZZURRA
Vessel Model: Ocean Alexander 54
Join Date: Aug 2017
Posts: 3,200
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Stainless Steel Doggy Buckets make inexpensive heat shields
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07-07-2022, 12:48 AM
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#8
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TF Site Team
City: Saltspring Island
Vessel Name: Retreat
Vessel Model: C&L 44
Join Date: Nov 2007
Posts: 5,174
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Quote:
Originally Posted by O C Diver
If it were me, I would take the bolt assembly to a hydraulic shop and just match the orings. They should be standard SAE orings. The system is only under a very minimal vacuum. Lubricate the orings with engine motor oil when putting them on the bolt and installing them through the housing.
Ted
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Harbor Freight has pacs of O rings. $10. for hundreds, in a dozen sizes. With a pac, I have all those sizes and more.
__________________
Keith
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07-07-2022, 09:06 AM
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#9
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Guru
Join Date: Jun 2008
Posts: 4,642
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Take dinghy ride and tour all the houseboats there. Incredible.
__________________
Jay Leonard
New Port Richey,Fl
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07-07-2022, 11:41 AM
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#10
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Guru
City: Fort Myers, FL... Summers in the Great Lakes
Vessel Name: Slow Hand
Vessel Model: Cherubini Independence 45
Join Date: Dec 2010
Posts: 11,050
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Quote:
Originally Posted by koliver
Harbor Freight has pacs of O rings. $10. for hundreds, in a dozen sizes. With a pac, I have all those sizes and more.
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I spent a lifetime working with orings, rebuilding scuba diving regulators and other diving equipment. Orings come in different sizes (including SAE standard and Metric), durometers (densities), and most importantly materials. For the deck fill caps on my water tanks, I would probably be fine with a Harbor Freight orings. For my diesel fuel system, I'm prepared to give the guy at the hydraulic shop a $1 an oring to know that it's diesel fuel compatible.
Ted
__________________
Blog: mvslowhand.com
I'm tired of fast moves, I've got a slow groove, on my mind.....
I want to spend some time, Not come and go in a heated rush.....
"Slow Hand" by The Pointer Sisters
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07-07-2022, 02:56 PM
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#11
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Guru
Join Date: Jun 2008
Posts: 4,642
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If in doubt if it’s diesel fuel compatable:
Soak it in diesel fuel overnight. If it swells it’s NOT compatible.
( the company I worked for had to do this as a short term fix for a corrective action for a materials mixup)
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07-11-2022, 03:22 PM
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#12
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Veteran Member
Vessel Model: 01 Carver 444, Four Forty Four CPMY
Join Date: Sep 2011
Posts: 63
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Just replace the Head Bolt Assembly Kit. No big deal. Don’t lose any sleep about how it looks… It’s beautiful.
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07-12-2022, 09:20 AM
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#13
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Senior Member
City: south kingstown
Vessel Name: Albatross
Vessel Model: 1973 Grand Banks 36
Join Date: May 2019
Posts: 299
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Did you try just tightening the header bolt? I think when the filter cartidge is tightened it can turn that bolt in a counter clockwise direction. Not sure on this, just a thought.
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07-12-2022, 09:50 AM
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#14
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Guru
City: Gulf Islands, BC Canada
Vessel Name: Soo Valley
Vessel Model: Grand Banks 36
Join Date: Jul 2019
Posts: 2,877
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IMO, while the filter can be unscrewed, I do not think it is meant to be unscrewed. The top bolt is what needs to come out and filter held in place while bolt is tightened.
__________________
SteveK AKA Soo Valley
You only need one working engine. That is why I have two.
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07-12-2022, 10:36 AM
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#15
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TF Site Team
City: Au Gres, MI
Vessel Name: Black Dog
Vessel Model: Formula 41PC
Join Date: Jul 2015
Posts: 16,289
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On the new one in the second photo (post #6) it looks like it is a spin on element.
__________________
Boat Nut:
If you are one there is no explanation necessary.
If you aren’t one, there is no explanation possible.
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07-12-2022, 11:19 AM
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#16
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Guru
City: Gulf Islands, BC Canada
Vessel Name: Soo Valley
Vessel Model: Grand Banks 36
Join Date: Jul 2019
Posts: 2,877
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Quote:
Originally Posted by Comodave
On the new one in the second photo (post #6) it looks like it is a spin on element.
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Not sure, same filter canister. The OP should be able to tell us.
Yup it is a spin on according to online.
__________________
SteveK AKA Soo Valley
You only need one working engine. That is why I have two.
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07-12-2022, 11:32 AM
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#17
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TF Site Team
City: Au Gres, MI
Vessel Name: Black Dog
Vessel Model: Formula 41PC
Join Date: Jul 2015
Posts: 16,289
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Yes, I think the original one used the bolt but the mew one is a spin on.
__________________
Boat Nut:
If you are one there is no explanation necessary.
If you aren’t one, there is no explanation possible.
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