[C320-list] racor primary fuel filter

[Warren Updike]

According to my Racor document, the nylon screw is a check ball valve for
the incoming fuel.  Makes sense.  You wouldn't want the fuel from the filter
passing back into the tank creating an air dam.  I seem to remember from an
earlier post that if you turn this down tightly, it will stop fuel flow from
the tank.  I've never done that as I always use the shutoff near the tank.  

Warren & Pattie Updike
1994 C320 #62 "Warr De Mar"


-----Original Message-----
From: David Swanson [mailto:kswanson123 at comcast.net] 
Sent: Monday, March 21, 2011 10:30 AM
To: C320-List at Catalina320.com
Subject: Re: [C320-list] racor primary fuel filter

Yea I know.  The hand pump is the one with the knurled plastic knob.
However, there is another recessed nylon screw next to the hand pump.  That
is the one that I am not sure what it does.  I was guessing that this is the
one Jim Brown was also asking about. 

Dave

David Swanson
S/V Emily Ann
2007 C320 MK II, No. 1107
Mukilteo, WA 

  
On Mar 21, 2011, at 7:25 AM, hcreech at comcast.net wrote:

> David, 
> The nylon screw is a manual hand pump. If you get an air lock from the
tank to the filter this pump will "break" the lock. 
> 
> 
> Herb Creech 
> Cloud Chaser 606 
> 
> 
> 
> ----- Original Message ----- 
> From: "David Swanson" <kswanson123 at comcast.net> 
> To: C320-List at Catalina320.com 
> Sent: Monday, March 21, 2011 10:15:27 AM 
> Subject: Re: [C320-list] racor primary fuel filter 
> 
> I just changed my fuel filters and bled my fuel system of air yesterday. 
> 
> Im not sure what the plastic screw is, I was wondering the same thing...
The bolt is the bleed vent. 
> 
> I replaced my filter with the Racor R20U filter. This is also a 10 micron
filter. My boat came with a 10 micron filter as well. 
> 
> The mechanic at the local Yanmar distributor said that given the small
fuel usages rates of these small sailboat engines, you could use a primary
filter down to the 2 micron size, although it would be overkill since the
engine mounted secondary fuel filter is 2 microns. 
> 
> Anyway, I just changed mine, bled the air from the system using the Racor
filter housing hand operated fueld priming pump, and all is well now. 
> 
> Dave 
> 
> David Swanson 
> S/V Emily Ann 
> 2007 C320 MK II, No. 1107 
> Mukilteo, WA 
> 
> On Mar 20, 2011, at 1:45 PM, jim brown wrote: 
> 
>> What is the nylon slotted screw on the top of the fuel filter housing
for? I 
>> can't remember whether this is the bleed screw or the bolt is the bleed
vent. 
>> Also, Yanmar recommends that the primary filter be 30 u but mine boat
came with 
>> a 10 u filter. No problems with the 10 but just curious since the fuel
rate is 
>> listed a different in the Racor informtion. 
>> 
>> 
>> Jim Brown 
>> 
>> 
>> 
>> 
>> ________________________________ 
>> 
>> 
>> 
> 
> David Swanson 
> kswanson123 at comcast.net 
> 
> 
> 

David Swanson
kswanson123 at comcast.net