Misterons Posted June 24, 2022 Report Share Posted June 24, 2022 My 22 year old PRM 80 has developed an oil leak from the output seal (slight spraying around bilge) does anyone know the the flange nut size before I strip it down and find out I don't have the correct socket! Also, it has had CC grade engine oil in from new, only changed once! should it use ATF ? Manual says engine oil but get conflicting answers on other forums. Cheers in advance. Link to comment Share on other sites More sharing options...
Tony Brooks Posted June 24, 2022 Report Share Posted June 24, 2022 19 minutes ago, Misterons said: My 22 year old PRM 80 has developed an oil leak from the output seal (slight spraying around bilge) does anyone know the the flange nut size before I strip it down and find out I don't have the correct socket! Also, it has had CC grade engine oil in from new, only changed once! should it use ATF ? Manual says engine oil but get conflicting answers on other forums. Cheers in advance. PRM changed it so when you rebuild use ATF. No idea of the nut size. You will probably need a locking bar to hold the half coupling when undoing and doing up the net. A sturdy steel bar with two bolts in it to match the holes on one side of the coupling will usually do. You will probably have to make the said bar so when you split the coupling you can measure the nut. 1 Link to comment Share on other sites More sharing options...
Tracy D'arth Posted June 24, 2022 Report Share Posted June 24, 2022 The manual https://www.prm-newage.com/media/File/PRM80.pdf lists the nut as M20 x 1.5, which would suggest 30mm AF spanner size. Link to comment Share on other sites More sharing options...
BEngo Posted June 24, 2022 Report Share Posted June 24, 2022 And expect it to be 0tight. Something approaching 4 white knuckles on a 600 mm bar. N Link to comment Share on other sites More sharing options...
Misterons Posted June 24, 2022 Author Report Share Posted June 24, 2022 thanks all, i think that's covered it, much appreciated. Ron Link to comment Share on other sites More sharing options...
Musetta37 Posted August 20, 2022 Report Share Posted August 20, 2022 Sorted now, is in fact a 120! Same seal though, my paperwork is wrong. Link to comment Share on other sites More sharing options...
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