Today's Message Index:
----------------------
1. 07:31 AM - Re: Two Nanchang mechanical questions (Terry Calloway)
2. 07:57 AM - Re: Two Nanchang mechanical questions (dabear)
3. 08:15 AM - Re: Two Nanchang mechanical questions (doug sapp)
4. 08:55 AM - Re: Two Nanchang mechanical questions (N642K)
5. 09:23 AM - Re: Two Nanchang mechanical questions (Warren Hill)
6. 10:04 AM - Re: Re: Two Nanchang mechanical questions (doug sapp)
Message 1
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| Subject: | Re: Two Nanchang mechanical questions |
Pete,
This is my experience, I am sure others may have additional advice.
1. Not too bad if you are a dwarf or don't mind standing on your head. Do take
the seat out. I did mine last summer and can tell you the trick is when reinstalling
the new valve to loosely attach all fittings first. Also be sure to
thoroughly clean the threads before going back in the cockpit. Finally the waist
bracket on the valve can also remain loose till all air line attachments are
secured.
2. There is a tool to do this or I have used a pair of snap ring pliers to open
the gap.
Another way to replace the flap valve is to go to and air show with a bunch of
RPA members and as soon as you get started trying to replace the valve someone
is sure to come around and show you how they would do it.
Then you can just sit back and watch. I recommend you make this move after the
last flight of the day that way when you are watching you can also have a beer.
:)
Good luck.
tc
On Feb 22, 2010, at 9:46 PM, Pete Fowler wrote:
>
> 1. Is there any trick to replacing the Flap cockpit valve? I have a spare and
there appears to be a lot of air leaking out of the one that's installed. Is
it a straight swap? Someone mentioned the 90 degree air fittings have to be clocked,
is that correct?
>
> 2. How do you open the gap on the Chinese spark plugs? They're surprisingly hard
metal and without putting any pressure on the delicate center electrode, I
don't see an elegant way to pry them open without galling the metal on the outer
electrodes (grabbing or hitting them open).
>
> Thanks!
>
> --------
> N4183E
> http://nanchangcjs.yuku.com/
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=287750#287750
>
>
>
>
>
>
>
>
>
>
Message 2
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| Subject: | Re: Two Nanchang mechanical questions |
I try that at most every airshow I go to. If I bring the part along, I can
get most of my maintenance done for free over the year....
I get a bad reputation, but I'm cheap.
Just haven't figured out how to get the new fuel tanks installed that
way....
DaBear
Joking y'all, joking
----- Original Message -----
From: "Terry Calloway" <terrycalloway@mac.com>
Sent: Tuesday, February 23, 2010 10:26 AM
Subject: Re: Yak-List: Two Nanchang mechanical questions
>
> Pete,
> This is my experience, I am sure others may have additional advice.
>
> 1. Not too bad if you are a dwarf or don't mind standing on your head. Do
> take the seat out. I did mine last summer and can tell you the trick is
> when reinstalling the new valve to loosely attach all fittings first.
> Also be sure to thoroughly clean the threads before going back in the
> cockpit. Finally the waist bracket on the valve can also remain loose
> till all air line attachments are secured.
>
> 2. There is a tool to do this or I have used a pair of snap ring pliers to
> open the gap.
>
> Another way to replace the flap valve is to go to and air show with a
> bunch of RPA members and as soon as you get started trying to replace the
> valve someone is sure to come around and show you how they would do it.
>
> Then you can just sit back and watch. I recommend you make this move
> after the last flight of the day that way when you are watching you can
> also have a beer. :)
>
> Good luck.
> tc
>
>
> On Feb 22, 2010, at 9:46 PM, Pete Fowler wrote:
>
>>
>> 1. Is there any trick to replacing the Flap cockpit valve? I have a spare
>> and there appears to be a lot of air leaking out of the one that's
>> installed. Is it a straight swap? Someone mentioned the 90 degree air
>> fittings have to be clocked, is that correct?
>>
>> 2. How do you open the gap on the Chinese spark plugs? They're
>> surprisingly hard metal and without putting any pressure on the delicate
>> center electrode, I don't see an elegant way to pry them open without
>> galling the metal on the outer electrodes (grabbing or hitting them
>> open).
>>
>> Thanks!
>>
>> --------
>> N4183E
>> http://nanchangcjs.yuku.com/
>>
>>
>>
>>
>> Read this topic online here:
>>
>> http://forums.matronics.com/viewtopic.php?p=287750#287750
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>
>
>
>
Message 3
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| Subject: | Re: Two Nanchang mechanical questions |
Pete,
Before you change it out make sure that you don't have a leaking flap
actuator. If there is air moving through the actuator it will vent out of
the flap handle. This caution applies to suspected gear valve problems
also, always check the actuators first.
Before you remove the valve take a felt marker and make a line across the
valve and onto the clamp bracket which hold it. this witness mark will help
you when you go to hook up the lines on the new valve.
If your new valve does not have fittings in it and you have to remove the
fittings from the old valve you will sometimes have a bit of trouble unless
you heat the old valve up a bit.
USE only box end or tube wrenches to remove the fittings.
The Chinese DZ5 plug gap is normally set with a simple go/no go type of
tool. There is one in every can of spark plugs. I may have one I'll check,
give me a call.
Hope all this helps,
Doug
On Mon, Feb 22, 2010 at 7:46 PM, Pete Fowler <pfdesign1@cox.net> wrote:
>
> 1. Is there any trick to replacing the Flap cockpit valve? I have a spare
> and there appears to be a lot of air leaking out of the one that's
> installed. Is it a straight swap? Someone mentioned the 90 degree air
> fittings have to be clocked, is that correct?
>
> 2. How do you open the gap on the Chinese spark plugs? They're surprisingly
> hard metal and without putting any pressure on the delicate center
> electrode, I don't see an elegant way to pry them open without galling the
> metal on the outer electrodes (grabbing or hitting them open).
>
> Thanks!
>
> --------
> N4183E
> http://nanchangcjs.yuku.com/
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=287750#287750
>
>
Message 4
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| Subject: | Re: Two Nanchang mechanical questions |
Doug, I don't have the air system schematic in front of me or I could probably
answer this myself (ok...probably not). Does the air leak out of both handles
with an actuator leak or just one?
Thanks in advance,
Mike DeCanio
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=287831#287831
Message 5
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| Subject: | Re: Two Nanchang mechanical questions |
Pete,
One other helpful precaution. If you are replacing a valve on the CJ that has multiple
B-nut attachments, such as the gear valve, mark, or number the lines.
After the valve is off, it may not be obvious which line goes to which connection.
Switching lines is not that hard to do, especially for the aft cockpit gear
valve.
And before you place into service a valve, take a few extra minutes to clean up
the threads. Makes it a little easier to hand tighten for the first few turns
before placing a wrench.
Warren Hill
N867PA
On Feb 22, 2010, at 8:46 PM, Pete Fowler wrote:
>
> 1. Is there any trick to replacing the Flap cockpit valve? I have a spare and
there appears to be a lot of air leaking out of the one that's installed. Is
it a straight swap? Someone mentioned the 90 degree air fittings have to be clocked,
is that correct?
>
> 2. How do you open the gap on the Chinese spark plugs? They're surprisingly hard
metal and without putting any pressure on the delicate center electrode, I
don't see an elegant way to pry them open without galling the metal on the outer
electrodes (grabbing or hitting them open).
>
> Thanks!
>
> --------
> N4183E
> http://nanchangcjs.yuku.com/
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=287750#287750
>
>
>
>
>
>
>
>
>
>
Message 6
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| Subject: | Re: Two Nanchang mechanical questions |
I honestly don't know without a bunch of study, my first knee jerk response
would be "that would depend on the position of the rear valve handle", but
would have to give is some more thought.
Doug
On Tue, Feb 23, 2010 at 8:55 AM, N642K <mdecanio@mac.com> wrote:
>
> Doug, I don't have the air system schematic in front of me or I could
> probably answer this myself (ok...probably not). Does the air leak out of
> both handles with an actuator leak or just one?
>
> Thanks in advance,
> Mike DeCanio
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=287831#287831
>
>
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