After all the talk about hydraulics last week I noticed both my backstay
cylinders are leaking a little around the top seal. I have one cylinder working
harder than the other too which is a problem. I put together the parts needed
to rebuild them and thought someone may benefit from knowing the parts
required. The backstay cylinders aren’t difficult. The boom vang cylinder is
spring loaded and I will probably pay a shop when it needs a rebuild. (and I
will warn them it’s spring loaded)
The parts come from Hercules and this is for 1 cylinder.
1-P187-00.937-312B (large seal)
1-ST-50 (sweep)
1-P187-00.500 (small seal)
2-568-215 (o-ring)
A couple of things I found useful last time was wrapping the shaft threads with
electrical tape to ease sliding the new seals on and I made up a sacrificial
stainless steel wire wrapped hose for the boom vang so I didn’t have to replace
and fish a new 20+ foot hose under the ceiling liner when the sun damages the
hose enough to leak. Navtec has a support section on their web page that
details how to check and set relief valve pressures which should help those of
you worried about over pressure of your backstay and transom hardware.
Len Mitchell
Crazy Legs
1989 37+
Midland On.
Sent from my iPad
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