Hello all,
I went looking at the seals noted below, and they appear to be much larger than
the seals on my hydraulic backstay adjusters. Would anyone know the part
numbers for the smaller version adjusters that are on the later boats? Mine is
a 1994 37/40+.
I thoroughly understand all of the recommendations to have the adjusters
professionally repaired, but I'm big into self-sufficiency, and I'd rather try
it first and see how it turns out. I can always go the professional route if I
don't get it right...
Thanks! Bruce Whitmore
(847) 404-5092 (mobile)
bwhitm...@sbcglobal.net
From: Len Mitchell via CnC-List <cnc-list@cnc-list.com>
To: CNC List <cnc-list@cnc-list.com>
Cc: Len Mitchell <xfireca...@gmail.com>
Sent: Friday, August 17, 2018 11:34 PM
Subject: Stus-List 37/40 hydraulics
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 MitchellCrazy Legs1989 37+Midland On.
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_______________________________________________
Thanks everyone for supporting this list with your contributions. Each and
every one is greatly appreciated. If you want to support the list - use PayPal
to send contribution -- https://www.paypal.me/stumurray
