|
Register | FAQ | Members List | Calendar | Today's Posts | Search |
|
Thread Tools | Rate Thread | Display Modes |
|
#1
|
|||
|
|||
I will measure the thickness of it tomorrow. I don't have the right caliper to measure the inside groove diameter where it seats. One thing I would encourage is to take pictures and mark where the tubes go before you remove it.
Dave |
#2
|
||||
|
||||
additional info?
I was wondering if there was any follow up to this posting. I got to fly my skymaster for the very first time today.....and what a machine these things are!!!! What I found out was that when we were flying on the main tanks, the front engine would also pull fuel from the aux tank. 2.5 hours of flying time used 8 gallons out of the left aux tank. I moved the selector valve around a bunch of times to see if there was something stuck in it that could get worked out, but used about the same out of the aux tank on the next 2.5 hour flight. I am thinking the balls and seats have corrosion on them as was shown in the pictures in the post. I didn't want to have my mechanic rip it apart until he was certain he could replace those clips if one were to be broken or lost in the process.
Also, in the post below there is mention of B and S in Wichita. Did you ever reach out to them regarding rebuilding the valve? Just trying to wrap my head around all the options. Thanks much guys!!! |
#3
|
|||
|
|||
Rigging
Tom,
I am not saying that it could not be some internal corrosion or problem in the valve, but if you have not verified, just double check the rigging of the valve. One small panel on at the wing root and a mirror, and you can verify that the valve is in the detents and rigged properly. Jeff |
#4
|
|||
|
|||
Ended up leaving the valve alone. (We got sidelined with more critical issue of flap-trim interconnect cable seizing in its sheath and restricting trim control.) It's on a future project list when can stand risk of long term disabling the valve. But have been concerned about what you experienced. Likewise agree about checking the rigging.
|
#5
|
||||
|
||||
Thanks guys! I will check the rigging and go from there - that is a good idea o verify the easy stuff and go from there. Thanks again!
|
#6
|
||||
|
||||
rebuild fuel selector valve
wslade2.
FYI, you CANNOT just replace the original clips with a C clip from a assortment of clips. That would be illegal. I'm not trying to be a know it all but as an A&P I know there are rules in the FARs that prohibit this kind of modifications. If the original clips are not serviceable and hard to come by you may have to buy a serviceable selector valve and replace the whole valve?? Has anyone tried contacting AIRBORNE the original valve manufacturer, for the clips? Just a thought. Regards, BILLS |
#7
|
|||
|
|||
McFarlane
Has anyone used McFarlane to rebuild their fuel valves? I spoke with Dave 2 days ago and he told me they can rebuild them now. He said it's mostly labor, but they do fabricate a few pieces. He mentioned somewhere in the $600 range.
We're having some issues and may need a rebuild also. |
#8
|
|||
|
|||
That is super duper news! McFarlane was on my list.
Tried to call Airborne for parts. They don't exist as they did before. They have been absorbed by parker hannifin. (check this link: https://semspub.epa.gov/work/05/465914.pdf) Called Parker Hannifin, pretty big outfit and have not gotten a call back from them. (out due to coronavirus?) Did call B&S and they think they have one gasket on the shelf but did not want to sell it in case they need it. They said their suppliers have stopped. Then got call from someone else there who wanted me to call yet another person there to see if they have capability to service it. But have not gotten a call back yet. They also directed me to Ross Aviation parts. Ross reports the valve is superceeded by a 1H12-3 obtainable at a price of $14,000 (yes fourteen thousand). Yingling also has it for $14K and change with a $3000 core charge. To dive deeper in parts, would need a repair manual for the valve listing part numbers for springs/gasket/retaining rings. Called Quality Aircraft Accessories and they confirmed (again) they do not service this valve. Called Cox Airparts and they said they were getting out of the fuel valve business. But the good news is, called Powerpacks Plus. They will repair it. They won't overhaul it, though, and you won't get a part back with paperwork/certificates. But it can be worked on. I couldn't find anyone to supply parts, retaining rings, springs, gasket. |
#9
|
||||
|
||||
Quote:
Dave owns a Skymaster
__________________
Herb R Harney 1968 337C Flying the same Skymaster for 47 years |