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Old 01-02-2015, 10:10   #1
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Navtec System V Multifunction Panel

I have a Navtec System V Multifunction Panel and the pump has started leaking out the seal in the back. We are in Panama and I want to send the pump into the local hydraulic shop, but I want to make sure I can take the pump off the back of the panel.

It looks like I can remove the 3 bolts on the front of the panel holding the pump in place, as well as 4 allen screws on the back holding the pump onto the relief valve/pressure gauge mechanism. Has anyone done this, and do you have any advice? Is there a service manual in existence? The System V manual linked on cruisersforum is just a user manual. Also, are there seals in the selector and relief valve that should also be replaced?

I've attached pics of the front and back of the panel for reference.

Edit: My pressure gauge is broken also. Are these hard to replace?
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Old 01-02-2015, 14:37   #2
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Re: Navtec System V Multifunction Panel

I took the pump off, which was straightforward. What I thought was a seal on the back is just a bearing for the shaft that actuates two pistons that go into the pump housing. I am guessing that these two pistons are sealed by o rings that need replacing. Here is a side pic of the pump showing one of the pistons going into the pump. The pump is on its side and the piston is the horizontal bronze tube.

Does anyone know what the seals for these pistons are and if they are accessed from the top of the pump or from the bottom?
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Old 01-02-2015, 14:54   #3
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Re: Navtec System V Multifunction Panel

just to make sure, do you have the drawings & Service Manual?

http://www.hisse-et-oh.com/system/as...pdf?1321964899

In case they disappear from the web, I can send them as email. Might be worth identifying the seal kit and have it shipped before going to the hydraulic shop.

Dirk

PS: Greetings to G., we were in the same 'taxi' from PC, then helping Elysium thru the canal.
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Old 03-02-2015, 16:53   #4
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Re: Navtec System V Multifunction Panel

Thanks Dirk! That is exactly what I needed. Looks like the piston seals and o ring are all off the shelf items. Sadly, none in stock in Panama. But I'll ship them in from the US and do the rebuild myself!

Now, are the cylinders just as easy? I'll have to find out some day.

Frank
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Old 03-02-2015, 17:15   #5
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Re: Navtec System V Multifunction Panel

Hi Frank

My hydraulic (integral) backstay adjuster was OK to rebuilt per that manual, but I did use a complete kit from Navtec, the kit also had new gaskets, pressure relieve springs and valves if I remember right.

Some of the cylinders (boomkicker?) are filled with pressurized gas on one side of the piston, they could be more problematic to work on.

Cheers

Dirk
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Old 03-02-2015, 20:00   #6
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Re: Navtec System V Multifunction Panel

Yeah, be careful on these. Our vang is pressurized to 1000lbs, because we have an inboom furler. They are dangerous at that point. The backstays are no big deal.
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