I had my pump, backstay and boomvang all serviced by Western Hydralics in
Ontario Canada. They did servicing at different times from $275 cdn to $425 cdn
for each piece. For the American, if shipping is feasible, that's seems to be
much less with the exchange rate. I had the boomvang snap in half
(literally)some years back (never realized why) and they rebuilt it entirely
with a new aluminum tubing and tapped for refitting and rebuilding to the
existing. They are a big industrial shop and these little pieces don't seem to
be a problem. They also didn't look specifically for Navtec parts as they
sourced generic and fabricated their own as needed. They also put the 650lbs of
gas in my vang and periodically top up when needed. I've always been happy
with their workPaul Hood416.799.5549
Original message From: cenelson--- via CnC-List
Date: 2024-01-07 10:40 p.m. (GMT-05:00) To: Stus-List
, CnClist Cc: cenel...@aol.com
Subject: Stus-List Re: Navtec hydraulic backstay - amateur rebuild
Great detailed write-up Dennis! If I had known it was coming, I might have done
the equivalent rebuild of my 28 year old Navtec/Sailtec unit myself. Alas, I
just picked it up from my local hydraulic shop after a complete rebuild
including the internal seals, etc. about 3 weeks ago!Initially the shop claimed
there was no longer a rebuild kit available for this old unit but when I picked
it up, they told me that Navtec/Sailtec located what they claimed was the last
kit in existence on a little used shelf in their shop/warehouse so the shop was
able to do a complete rebuild.For reference purposes, the total cost of my
rebuild was $652.73, including shipping of kit to NC and NC 7% sales tax. I
drove it to and from the shop myself. The equivalent new replacement was north
of $2000 and this was the second rebuild of the cylinder in 28 years (by the
same shop). It could likely be rebuilt again in another 14 years but that
won’t be my problem unless I’m still trying to figure out how to improve my
club racing when I ‘m in my 90s!Charlie Nelson1995 C&C 36XL/kcbWater Phantom
Sent from the all new AOL app for iOSOn Sunday, January 7, 2024, 3:44 PM,
Dennis C. via CnC-List wrote:A fellow boater had a
Navtec integral hydraulic backstay adjuster that blew the top seal. As many of
you know, this is probably the most common failure for these. Exposure to UV
and the elements deteriorates the rod wiper at the top of the cylinder and it's
downhill from there. (I recommend a 1/2 washer on top of the cylinder.)This
list has been down this road many times. There's always a discussion whether
to take the thing to a local hydraulic shop or let Lew Townsend in Seattle
rebuild it. For the record, I sent Touche's adjuster to Lew a couple years ago
and am a satisfied Lew client.So I called Lew and chatted with him about this
"orphan" adjuster. He asked some critical questions. Was I going to keep it
as a spare? Was I going to try to auction it? He commented that neither
option was particularly economical. H. Then we talked about snow skiing.
We're both avid skiers.After some thought, I tended to agree with Lew.
Including shipping, a rebuild would be north of $400-500. An expensive gamble
to have it sit on eBay for weeks like others I've seen.So I decided to give the
rebuild a shot myself. The Navtec seal kit, IF you can find one, is about
$200. Philosophically, it's not much more than a manual hydraulic jack that
compresses rather than lifts. Internet research turned up a set of rebuild
instructions. See
here:https://www.plaisance-pratique.com/IMG/pdf/navtec_hydraulik_service_manual.pdfArmed
with instructions and a pair of calipers, off I went. Disassembly of the
cylinder was fairly straightforward. I found several equivalent seals at
mcmaster.com. For those who are really interested, parts below are referenced
on Page 8.Part Qty Navtec Mcmaster Price31 2 HJ-2-215 9452K36
$12.08 (Needed 2. Had to buy 100)35 1 HI-005 9505K39
$4.8336 1 HN-002 9403K55 $2.30Jug of Fram Hydraulic Jack Oil
AW32. $10Reassembly went well. I strapped it between two trees in my backyard
and pressured it up. I noticed the thing was leaking from the pump piston.
Okay, I pulled the pump handle and piston. The piston rod seal disintegrated
when I removed it. Turned out this is a generic U seal with o-ring
1/4x1/2x1/4. Internet search on the Navtec number turned up numerous
suppliers. I bought it from Crescent Hydraulics in south Florida.Part Qty
Navtec Crescent Price39 1
12500250-250B P125-00,250-250B $4.05It's now back between the trees
pressured up to 500-700. Hard to tell because the gauge lens is very crazed.
But it seems to be holding. I'll know for sure in a couple days.Granted, I did
not get into the actual pump assembly and all the check valves,
