STD Tuning Engine OM606- Sanity check fuel line air leaks

OM606- Sanity check fuel line air leaks

OM606- Sanity check fuel line air leaks

 
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Alec300SD
K26-2

32
12-05-2018, 10:21 PM #14
(12-05-2018, 08:33 AM)jav1 Also-  why is there a return line fitting connected into the filter housing?  This is where the injection pump return line, the injector return line and the tank return line meet.  I get those 3 connections but why is there a sealed port into the filter housing?  Does the return passage somehow connect/interact to the pre-filter or main filter passage(s)?
On the OM617 fuel filter head, a banjo bolt secures the return line T-fitting to the filter head.
The port that receives this banjo bolt is not sealed.
It has a small orifice in the center of the well to provide the main (secondary) spin-on fuel filter with an air bleed off point.

The fuel flow returning to the tank purges the air out of the main fuel filter when the motor is running.
I believe your filter head is similarly designed.
Alec300SD
12-05-2018, 10:21 PM #14

(12-05-2018, 08:33 AM)jav1 Also-  why is there a return line fitting connected into the filter housing?  This is where the injection pump return line, the injector return line and the tank return line meet.  I get those 3 connections but why is there a sealed port into the filter housing?  Does the return passage somehow connect/interact to the pre-filter or main filter passage(s)?
On the OM617 fuel filter head, a banjo bolt secures the return line T-fitting to the filter head.
The port that receives this banjo bolt is not sealed.
It has a small orifice in the center of the well to provide the main (secondary) spin-on fuel filter with an air bleed off point.

The fuel flow returning to the tank purges the air out of the main fuel filter when the motor is running.
I believe your filter head is similarly designed.

 
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Messages In This Thread
OM606- Sanity check fuel line air leaks - by jav - 12-02-2018, 07:47 PM
RE: OM606- Sanity check fuel line air leaks - by AlanMcR - 12-02-2018, 10:48 PM
RE: OM606- Sanity check fuel line air leaks - by jav1 - 12-03-2018, 07:54 AM
RE: OM606- Sanity check fuel line air leaks - by Benzer - 12-05-2018, 09:34 PM
RE: OM606- Sanity check fuel line air leaks - by AlanMcR - 12-04-2018, 12:10 AM
RE: OM606- Sanity check fuel line air leaks - by jav1 - 12-04-2018, 08:05 AM
RE: OM606- Sanity check fuel line air leaks - by baldur - 12-04-2018, 10:09 AM
RE: OM606- Sanity check fuel line air leaks - by AlanMcR - 12-04-2018, 01:22 PM
RE: OM606- Sanity check fuel line air leaks - by baldur - 12-05-2018, 07:51 AM
RE: OM606- Sanity check fuel line air leaks - by jav1 - 12-04-2018, 03:07 PM
RE: OM606- Sanity check fuel line air leaks - by barrote - 12-04-2018, 03:26 PM
RE: OM606- Sanity check fuel line air leaks - by jav1 - 12-04-2018, 04:46 PM
RE: OM606- Sanity check fuel line air leaks - by jav1 - 12-05-2018, 08:33 AM
RE: OM606- Sanity check fuel line air leaks - by Alec300SD - 12-05-2018, 10:21 PM
RE: OM606- Sanity check fuel line air leaks - by jav1 - 12-06-2018, 08:14 AM
RE: OM606- Sanity check fuel line air leaks - by Alec300SD - 12-06-2018, 02:59 PM
RE: OM606- Sanity check fuel line air leaks - by jav1 - 12-06-2018, 03:42 PM
RE: OM606- Sanity check fuel line air leaks - by jav - 12-06-2018, 09:53 PM
RE: OM606- Sanity check fuel line air leaks - by Alec300SD - 12-07-2018, 02:02 AM
RE: OM606- Sanity check fuel line air leaks - by barrote - 12-07-2018, 04:35 AM
RE: OM606- Sanity check fuel line air leaks - by jav1 - 12-07-2018, 08:42 AM
RE: OM606- Sanity check fuel line air leaks - by AlanMcR - 12-07-2018, 10:36 PM
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