{Stus-List} Diesel leak at secondary filter housing - 3GM30F

Jim Watts jimwatts at shaw.ca
Mon Jun 1 00:40:44 EDT 2009

Clean the fitting with Interlux 216 Special Thinner and a toothbrush (Oral-B, #40 Extra Soft), give both mating surfaces a thin coat of 3M 5200 (any colour but Teak), and put it on hand-tight. That sucker will never leak again. 

(I jest) 

Jim Watts
Paradigm Shift
C&C 35 Mk III
  ----- Original Message ----- 
  From: David Blair 
  To: cnc-list at cnc-list.com 
  Sent: Sunday, May 31, 2009 9:09 PM
  Subject: {Stus-List} Diesel leak at secondary filter housing - 3GM30F

  Has anyone experienced the tightening ring on the secondary filter housing working itself lose after 2 or 3 hours of running time? After the first episode(which was after a filter change and bleeding) and getting back to the dock a qualified mechanic checked and reinstalled the filter, etc again. Seemed good, but 3 running hours later its worked itself loose again, more diesel in the bilge.. Threads look good (ie: don't appear stripped), Yanmar authentic filter element carefully centred and ring threaded fully up and hand tight, etc. 

  Any suggestions?


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