Today's Message Index:
----------------------
1. 09:44 AM - =?utf-8?B?WWFrNTIgZWxlY3RyaWNhbCBmYWlsdXJl? (=?utf-8?B?TmlnZWwgV2lsbHNvbg==?=)
2. 10:07 AM - Re: Yak52 electrical failure (Bitterlich, Mark G CIV Det Cherry Point, MALS-14 64E)
3. 10:26 AM - Re: Yak52 electrical failure (A. Dennis Savarese)
4. 12:26 PM - Re: Yak52 electrical failure (Eric Wobschall)
5. 01:25 PM - Re: Yak52 electrical failure (Jan Mevis)
6. 01:33 PM - Re: Yak52 electrical failure (Eric Wobschall)
Message 1
| INDEX | Back to Main INDEX |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | =?utf-8?B?WWFrNTIgZWxlY3RyaWNhbCBmYWlsdXJl? |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Message 2
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Yak52 electrical failure |
I am going to have to dig into the schematics to give you the exact details, but
you have a little bit of troubleshooting to do.
Here's a start from memory.
The very FIRST thing to do is to check the master fuse! It is a 50 amp deal and
is located very close to the battery... somewhere. I am not sure where it is
on a 52, but it has to be there! Look for it carefully. If you can't find
it, just move on.
First, locate your main relay box. Seems to me that on a YAK-52 (remember, I work
with 50's for the most part) is accessible from an access panel on the right
side of the aircraft just forward of the cockpit. Inside that you will see
a box with a cover that has about four screws or knurled nuts on it. This box
is about oh... .say a foot wide and about 8 inches tall. This is your main
relay and control panel for the aircraft.
Inside of THIS box are a couple of BIG bus bar fuses! CHECK THEM ALL WITH AN
OHM-METER! (Disconnect the battery first) These things go bad just from vibration!
They really should be replaced with modern circuit breakers, but... whatever.
It is highly likely that one of these is bad! Another way to check
them is to leave the battery connected. Check for 24 volts on one side of one
of them and make sure there is 24 volts on the OTHER side of the same one! (bus
bar fuses that is). These things have tabs soldered to the top and bottom
so that they can be attached with screws. They don't just "click" in. They
are BLACK in color. If you find one bad, you are on to the next step... replacing
them! We'll hold off on that for now.
If ALL fuses are good and you have verified that you have 24 volts coming into
the relay panel and going through the fuses, you move to the next step.
Inside that same box you are going to see a whole slew of relays.
The switch in your cockpit controls TWO of them. One is for external power and
one is for INTERNAL power. So when you flip your master on, your cockpit switch
actually provides power to the main power relay COIL, turning IT on and providing
power to your aircraft. These two relays look identical and actually
are the same exact part number. You can actually REVERSE the two and use the
external power relay for the main power relay if you had to.
Find this relay box... open it. Flip on the external power using the cockpit switch.
(have external power plugged in). Listen and FEEL for the relay that
is turning on. It will have some big wires hooked to it. Once you find THAT
relay, look for another right beside it, or darn close to it, that looks EXACTLY
the same. That is you MAIN power relay that is turned on when you normally
turn on Battery power.
Remove external power.
Check to make sure you have 24 volts from the battery going to this relay. Use
a meter and check for it. Find the relay coil wires. Check for proper operation
from the cockpit switch.
You could have a bad switch in the cockpit, bad wiring to the relay. Bad relay.
Inside of the cover for this panel there is usually a schematic that will be of
great help!
Otherwise, I am going to have to dig this out of reference material. I'll see
what I can find. If anyone else has it handy, please throw it in.
Mark
-----Original Message-----
From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of Nigel Willson
Sent: Tuesday, April 26, 2011 12:41 PM
Subject: Yak-List: Yak52 electrical failure
Yak52 refuses to power up when battery switch turned on. Completely dead. Battery
ok. Powers up ok from external power.
Ideas where to look please?
Nigel
Message 3
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Yak52 electrical failure |
As Mark says, check the 50 amp master fuse which is located in the
battery compartment. It is on the right side, aft and behind a cover.
Dennis
On 4/26/2011 12:04 PM, Bitterlich, Mark G CIV Det Cherry Point, MALS-14
64E wrote:
> --> Yak-List message posted by: "Bitterlich, Mark G CIV Det Cherry Point, MALS-14
64E"<mark.bitterlich@navy.mil>
>
> I am going to have to dig into the schematics to give you the exact details,
but you have a little bit of troubleshooting to do.
>
> Here's a start from memory.
>
> The very FIRST thing to do is to check the master fuse! It is a 50 amp deal
and is located very close to the battery... somewhere. I am not sure where it
is on a 52, but it has to be there! Look for it carefully. If you can't find
it, just move on.
>
> First, locate your main relay box. Seems to me that on a YAK-52 (remember, I
work with 50's for the most part) is accessible from an access panel on the right
side of the aircraft just forward of the cockpit. Inside that you will see
a box with a cover that has about four screws or knurled nuts on it. This
box is about oh... .say a foot wide and about 8 inches tall. This is your main
relay and control panel for the aircraft.
>
> Inside of THIS box are a couple of BIG bus bar fuses! CHECK THEM ALL WITH AN
OHM-METER! (Disconnect the battery first) These things go bad just from vibration!
They really should be replaced with modern circuit breakers, but...
whatever. It is highly likely that one of these is bad! Another way to check
them is to leave the battery connected. Check for 24 volts on one side of one
of them and make sure there is 24 volts on the OTHER side of the same one!
(bus bar fuses that is). These things have tabs soldered to the top and bottom
so that they can be attached with screws. They don't just "click" in. They
are BLACK in color. If you find one bad, you are on to the next step... replacing
them! We'll hold off on that for now.
>
> If ALL fuses are good and you have verified that you have 24 volts coming into
the relay panel and going through the fuses, you move to the next step.
>
> Inside that same box you are going to see a whole slew of relays.
>
> The switch in your cockpit controls TWO of them. One is for external power and
one is for INTERNAL power. So when you flip your master on, your cockpit switch
actually provides power to the main power relay COIL, turning IT on and
providing power to your aircraft. These two relays look identical and actually
are the same exact part number. You can actually REVERSE the two and use the
external power relay for the main power relay if you had to.
>
> Find this relay box... open it. Flip on the external power using the cockpit
switch. (have external power plugged in). Listen and FEEL for the relay that
is turning on. It will have some big wires hooked to it. Once you find THAT
relay, look for another right beside it, or darn close to it, that looks EXACTLY
the same. That is you MAIN power relay that is turned on when you normally
turn on Battery power.
>
> Remove external power.
>
> Check to make sure you have 24 volts from the battery going to this relay. Use
a meter and check for it. Find the relay coil wires. Check for proper operation
from the cockpit switch.
>
> You could have a bad switch in the cockpit, bad wiring to the relay. Bad relay.
>
> Inside of the cover for this panel there is usually a schematic that will be
of great help!
>
> Otherwise, I am going to have to dig this out of reference material. I'll see
what I can find. If anyone else has it handy, please throw it in.
>
> Mark
>
>
> -----Original Message-----
> From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of Nigel Willson
> Sent: Tuesday, April 26, 2011 12:41 PM
> To: yak-list@matronics.com
> Subject: Yak-List: Yak52 electrical failure
>
> Yak52 refuses to power up when battery switch turned on. Completely dead. Battery
ok. Powers up ok from external power.
>
> Ideas where to look please?
>
>
> Nigel
>
>
Message 4
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Yak52 electrical failure |
Master switch, and I think there are some fuses or fusible links in the
power distribution box as well..
On Apr 26, 2011, at 12:40 PM, Nigel Willson wrote:
> Yak52 refuses to power up when battery switch turned on. Completely
dead. Battery ok. Powers up ok from external power.
>
> Ideas where to look please?
>
>
> Nigel
>
> ----- Reply message -----
> From: "Dennis Von Ruden" <dvonruden@generalequip.com>
> To: <yak-list@matronics.com>
> Subject: Yak-List: Engine Primer
> Date: Mon, Apr 11, 2011 3:00 am
>
>
> While trying to start the engine on my CJ today, the primer failed.
Worked normal last time before winter hit Minnesota. Would not pump
anything. Just gas trying to come out at the top of the primer. The good
news is it will have its annual inspection this week. Have the repair
manual. Anything specific we should look at as being the cause of the
problem?
>
> Thanks
>
> Dennis
>
> Dennis Von Ruden
> President
>
>
>
> 620 Alexander Drive S.W.
> P.O. Box 334
> Owatonna, MN 55060
>
> 800.533.0524 voice
> +5074515510 voice
>
> 877.344.4375 fax
> +5074515511 fax
>
> dvonruden@generalequip.com
> www.generalequip.com
>
>
>
--------------------------------------------------------------------------
------
> ALL INFORMATION IN THIS EMAIL, AND/OR ATTACHMENT(S) IS CONFIDENTIAL.
If you received this e mail in error, and are not the recipient(s) or
responsible for receiving this e mail for the recipient, please inform
the sender immediately, delete the e mail and any attachment(s)
associated.
> This email has been scanned by Barracuda - Email Security System.
>
Message 5
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Yak52 electrical failure |
We once exchanged the main relay in the big box on a 52 with the one
used for the external power. It was a speed repair for someone with a G
Yak who had to leave urgently for a meeting.
As Mark said, both relays are exactly the same. The one for the external
power should be as good as new since barely used.
In the 50 this main box is black and from metal, in the 52 it is made of
some kind of plastic or composite and probably not black but grey. At
least that=99s what I have seen on several occasions, maybe
that=99s not a general rule.
You can access this box from the panel on the right side on the 52.
This box is situated on the same place on the firewall in the 50 and the
52 (upper right corner at the inside seen from the cockpit).
But it=99s logical to look at the fuse first.
Jan
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Nigel Willson
Sent: dinsdag 26 april 2011 6:41
Subject: Yak-List: Yak52 electrical failure
Yak52 refuses to power up when battery switch turned on. Completely
dead. Battery ok. Powers up ok from external power.
Ideas where to look please?
Nigel
----- Reply message -----
From: "Dennis Von Ruden" <dvonruden@generalequip.com>
Subject: Yak-List: Engine Primer
While trying to start the engine on my CJ today, the primer failed.
Worked normal last time before winter hit Minnesota. Would not pump
anything. Just gas trying to come out at the top of the primer. The good
news is it will have its annual inspection this week. Have the repair
manual. Anything specific we should look at as being the cause of the
problem?
Thanks
Dennis
Dennis Von Ruden
President
GNE_Logo
620 Alexander Drive S.W.
P.O. Box 334
Owatonna, MN 55060
800.533.0524 voice
+5074515510 voice
877.344.4375 fax
+5074515511 fax
<mailto:dvonruden@generalequip.com> dvonruden@generalequip.com
<http://www.generalequip.com/> www.generalequip.com
-------------------------------------------------------------------------
-------
ALL INFORMATION IN THIS EMAIL, AND/OR ATTACHMENT(S) IS CONFIDENTIAL. If
you received this e mail in error, and are not the recipient(s) or
responsible for receiving this e mail for the recipient, please inform
the sender immediately, delete the e mail and any attachment(s)
associated.
This email has been scanned by Barracuda - Email Security System.
~
_____
Message 6
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Yak52 electrical failure |
The 52 box is grey with two knurled knobs on it which are lock-wired
together.
On Apr 26, 2011, at 4:18 PM, Jan Mevis wrote:
> We once exchanged the main relay in the big box on a 52 with the one
used for the external power. It was a speed repair for someone with a G
Yak who had to leave urgently for a meeting.
> As Mark said, both relays are exactly the same. The one for the
external power should be as good as new since barely used.
>
> In the 50 this main box is black and from metal, in the 52 it is made
of some kind of plastic or composite and probably not black but grey. At
least that=92s what I have seen on several occasions, maybe that=92s not
a general rule.
>
> You can access this box from the panel on the right side on the 52.
This box is situated on the same place on the firewall in the 50 and the
52 (upper right corner at the inside seen from the cockpit).
> But it=92s logical to look at the fuse first.
>
> Jan
>
> From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Nigel Willson
> Sent: dinsdag 26 april 2011 6:41
> To: yak-list@matronics.com
> Subject: Yak-List: Yak52 electrical failure
>
> Yak52 refuses to power up when battery switch turned on. Completely
dead. Battery ok. Powers up ok from external power.
>
> Ideas where to look please?
>
>
> Nigel
>
> ----- Reply message -----
> From: "Dennis Von Ruden" <dvonruden@generalequip.com>
> To: <yak-list@matronics.com>
> Subject: Yak-List: Engine Primer
> Date: Mon, Apr 11, 2011 3:00 am
>
>
> While trying to start the engine on my CJ today, the primer failed.
Worked normal last time before winter hit Minnesota. Would not pump
anything. Just gas trying to come out at the top of the primer. The good
news is it will have its annual inspection this week. Have the repair
manual. Anything specific we should look at as being the cause of the
problem?
>
> Thanks
>
> Dennis
>
> Dennis Von Ruden
> President
>
>
>
> 620 Alexander Drive S.W.
> P.O. Box 334
> Owatonna, MN 55060
>
> 800.533.0524 voice
> +5074515510 voice
>
> 877.344.4375 fax
> +5074515511 fax
>
> dvonruden@generalequip.com
> www.generalequip.com
>
>
>
--------------------------------------------------------------------------
------
> ALL INFORMATION IN THIS EMAIL, AND/OR ATTACHMENT(S) IS CONFIDENTIAL.
If you received this e mail in error, and are not the recipient(s) or
responsible for receiving this e mail for the recipient, please inform
the sender immediately, delete the e mail and any attachment(s)
associated.
> This email has been scanned by Barracuda - Email Security System.
> ~
>
>
>
>
>
Other Matronics Email List Services
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
-- Please support this service by making your Contribution today! --
|