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Primary diesel filter leak |
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S&J
Admiral Joined: 30 August 2014 Location: Perth WA / Med Status: Offline Points: 1180 |
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Posted: 04 May 2018 at 17:58 |
Returned to the boat after a 6 month winter break to find almost 2 litres of diesel pooled behind the engine. The source is the primary filter. Edited by S&J - 04 May 2018 at 17:59 |
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H458 #159 Primal Mediterranean cruising
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samuel
Admiral of the Fleet Joined: 26 December 2004 Location: United Kingdom Status: Offline Points: 2683 |
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I do not know about the Allpa unit but I had a similar problem with my CAV ( now made by Delphi) unit. Is the actual filter you have Allpa & the holding unit to a CAV? Or is the whole thing made by Allpa?
I had leaks & got annoyed when my cousin ( who works on various farms) called me a "spanner monkey". he pointed out that there are thousand of CAV units in use & people change them on plant & machinery whilst up to their knees in mud with no problems. He ended up by suggesting that I took a good look at the unit & check it was in fact a genuine CAV filter. It was in fact a clone that Hanse had fitted When I changed it for the real thing all leaks ended & I did not have to force the nuts tight. just a gentle nip of the bolt. So may I suggest that you change the filter unit for a genuine CAV/Delphi water trap primary filter. At least check you have a genuine unit. I am assuming that the filter you are talking about is the water trap one!!! Edited by samuel - 04 May 2018 at 19:30 |
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Daydream Believer- Hanse 311- No GBR9917T- Bradwell Essex
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sailkoop
Commadore Joined: 02 September 2010 Location: Germany Status: Offline Points: 437 |
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Move forward to a Separ Filter. Their you exchange the Filter on the Top, not on the Bottom!! Less trouble and less Diesel in the Bilge....
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best regards
Bjoern |
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Kjell
Sub Lieutenant Joined: 02 February 2014 Location: Sweden Status: Offline Points: 5 |
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On our filter there is a rubber seal on the drainage tap. In the picture it appears to be missing.
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Hanse 345 #124, Tuva
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Captain Cook
Admiral Joined: 23 May 2006 Location: Denmark Status: Offline Points: 1009 |
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I had the same problem. I changed the filter without problems when the tank was ½ full. When I filled the tank, several liters of diesel escaped down in the bilge. The diesel fumes annoyed me for years, even after having washed out the bilge with detergent.
The filter delivered from the marine store was designed for my 3JH4E, but it was two millimeters too short. I solved the problem by stacking 2½ mm of washers under the bolt, but this year I will search for an filter element the right size. |
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Freya H400 #27 (2006), 40HP 3JH4E, 2-cabin, 3-blade Flexofold, Aries LiftUp Windvane, Exturn 300, Jefa DD1,Simrad NX40,Icom M603(VHF)+M802(SSB)
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SausalitoDave
Commadore Joined: 13 October 2014 Location: Sausalito Status: Offline Points: 366 |
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On my 505 the bolt was so short that it only engaged two turns of the thread so it was quickly obvious it was not possible to get it tight enough to compress the washer. Fortunately, I figured it out before more than a few cc's of fuel ended up in the bilge. What can you say, other than it is a boat.
Dave
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S&J
Admiral Joined: 30 August 2014 Location: Perth WA / Med Status: Offline Points: 1180 |
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Thanks Kjell
I have used a fibre washer to stop the leak from the drainage tap. So far it seems to be OK and is staying dry. I will look for a replacement filter in due course.
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H458 #159 Primal Mediterranean cruising
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J&J
Sub Lieutenant Joined: 10 June 2014 Location: Auckland Status: Offline Points: 17 |
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Had a similar problem and replaced with a racor spin on unit and haven't had any problem since the elements are more expensive but much faster to change and don't come undone
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