www.iFourWinns.com

I just pressure tested my outdrive. I set it at 15 psi. It slowly dropped to 10 psi in an hour but then held 10 psi overnight. Is this good or should I look at replacing seals. ????
Thanks Rob

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Anything Worth Doing Is Worth Overdoing
2001 Horizon 180

Sounds like it worked some crud out if a seal. If you are a trailer boater, I would not be concerned at all.

If you are about to put it on a mooring or dock for a season, I would consider running it some, then testing again. Still, if it held at 10psi all night it does not sound like you have any issue.

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"Knot Easy" 2000 Horizon 240 Volvo 5.7GS /SX
tow: 2017 Honda PILOT EXL-AWD
prev. boats:
'87 Chaparral 198CXL 4.3 OMC Cobra
'69 Jetstar 16ft Ski Boat, 115hp Yamaha
'68 Aluminum Jon Boat, 3hp Sears
'64 Water Wings

Which drive? I have the factory test procedure if you want it for a Volvo.

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Mike
2005 Four Winns 230/240
VP 5.7GXi/DP
1998 F-150 XLT
Boat Pic

I just wanted to give an update on my outdrive seal. Volvo Penta SX on a 2003 Horizon 180 with 5.0 GL engine.
Last July when I took the boat out of the water I noticed foamy outdrive oil. I refilled with new oil and stored the boat for the winter. Prior to putting the boat in late June I emptied the oil and ran a pressure test on the outdrive. It would not hold 15 psi but held 10 psi overnight. So I took a chance and replaced all 3 of the o-rings in the fill and drain and level check plugs. When I pulled the boat out after a month in the water the oil was clear and clean. Looks like I just had a bad o-ring.
Rob

_________________
Anything Worth Doing Is Worth Overdoing
2001 Horizon 180

I'm not sure what their spec is for the pressure it should hold but I always replace the fiber sealing washers on my Cobra and have not had milky gear oil for many years.

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88 Four Winns 200 Horizon
4.3 OMC Cobra-4bbl
2002 Walker Bay 10/2012 Suzuki 2.5
2008 Walker Bay 8

1998 Jeep Grand Cherokee 4.0/Selectrac
2007 Jeep Grand Cherokee 5.7 Hemi/Quadradrive II