77j flaps stuck down

[201Steve]

My flaps wouldn’t come back up after preflight test. 
 

is this a down limit switch or an up limit switch most likely?

77j

[ArtVandelay]

No movement at all?

No sound of the motor straining?

[201Steve]

6 minutes ago, ArtVandelay said:

No movement at all?

No sound of the motor straining?

Correct

[EricJ]

If you don't have a one-piece belly, the small belly panel under the flaps uncovers everything, including the motor, jackscrew, and the limit switches.    Sometimes you can spray contact cleaner into the switches and work them a bit to get them going again.

Either limit switch can fail and prevent the motor from running, as well as the cockpit switch, so it really takes getting in there and sorting it out. 

 

[N201MKTurbo]

Set the flap switch up, turn on the master, get out and grab the trailing edge of the flaps and wiggle them up and down. They will come up. Then next time you have the belly open, clean the limit switches.

[201Steve]

Thanks @EricJ

i pulled the belly panel and just a twitch with my finger on the down stop got it going again. Haven’t been able to Recreate the stoppage. Wonder how long it’ll last…
 

 

[N201MKTurbo]

The red switch is not the correct switch. If you look in the parts manual, you will see they should be the same. The part number in the manual is the micro switch part number. They are hard to find. If you look on EBay long enough, you will find some new ones for a reasonable price.

[EricJ]

+1 spray some cleaner in both and start looking around for spares.    Those switches are used in several places on the airplane, e.g., it's the same switch at the throttle for the gear horn, etc., so having some spares on hand is not a bad thing.

[201Steve]

Thank you for both of your feedback! As Anthony would say, go Mooneyspace!

[PT20J]

1 hour ago, N201MKTurbo said:

The red switch is not the correct switch. If you look in the parts manual, you will see they should be the same. The part number in the manual is the micro switch part number. They are hard to find. If you look on EBay long enough, you will find some new ones for a reasonable price.

Maybe. I looked in the IPC and also the SMM. Mooney used a few different microswitches: V3-1, V3-3, V3L-3. The V3-1 seems readily available ($24.14 from Newark) and requires the addition of a JV-5 lever actuator ($19.97 from Newark). I cannot find a reference for a V3-3. The black switch in the picture looks like it might be that combination. Mouser shows the V3L-3 as a FAA PMA part that includes the lever actuator. It looks like the red switch. It's $170.10. I think they are all interchangeable. 

[N201MKTurbo]

1 hour ago, PT20J said:

Maybe. I looked in the IPC and also the SMM. Mooney used a few different microswitches: V3-1, V3-3, V3L-3. The V3-1 seems readily available ($24.14 from Newark) and requires the addition of a JV-5 lever actuator ($19.97 from Newark). I cannot find a reference for a V3-3. The black switch in the picture looks like it might be that combination. Mouser shows the V3L-3 as a FAA PMA part that includes the lever actuator. It looks like the red switch. It's $170.10. I think they are all interchangeable. 

I found a batch of V3L-3s on EBay for $5 each about 15 years ago. I gave two to @EricJ for his plane, used two on my plane and have one left. I have looked a few times since and they show up periodically.

The red one appears to be a V3L-3-D8, not the same. The real ones are black.

https://www.ebay.com/itm/174183472234?chn=ps&_trkparms=ispr%3D1&amdata=enc%3A1PPaNXMtoS5-KXszb62BpEQ35&norover=1&mkevt=1&mkrid=711-166974-028196-7&mkcid=2&mkscid=101&itemid=174183472234&targetid=2205435165748&device=c&mktype=pla&googleloc=9030089&poi=&campaignid=19899003495&mkgroupid=148425234220&rlsatarget=pla-2205435165748&abcId=9309885&merchantid=137613702&gclid=EAIaIQobChMI4-r54OScggMVxgCtBh3d7Q1OEAQYBCABEgKU-PD_BwE

[PT20J]

20 minutes ago, N201MKTurbo said:

I found a batch of V3L-3s on EBay for $5 each about 15 years ago. I gave two to @EricJ for his plane, used two on my plane and have one left. I have looked a few times since and they show up periodically.

The red one appears to be a V3L-3-D8, not the same. The real ones are black.

https://www.ebay.com/itm/174183472234?chn=ps&_trkparms=ispr%3D1&amdata=enc%3A1PPaNXMtoS5-KXszb62BpEQ35&norover=1&mkevt=1&mkrid=711-166974-028196-7&mkcid=2&mkscid=101&itemid=174183472234&targetid=2205435165748&device=c&mktype=pla&googleloc=9030089&poi=&campaignid=19899003495&mkgroupid=148425234220&rlsatarget=pla-2205435165748&abcId=9309885&merchantid=137613702&gclid=EAIaIQobChMI4-r54OScggMVxgCtBh3d7Q1OEAQYBCABEgKU-PD_BwE

Looks like the V3L-3-D8 has spade lugs instead of screw terminals. But for the price, I'd probably go with V3-1/JV-5.

[EricJ]

The Microswitch/Honeywell V3-1/JV-5 crosses to an Eaton SS12ET10-102L3, which shows up elsewhere in the IPC/MM, but is the same part as the V3L-3.   Sometimes you can still find those, or if you're looking for some just try for both and see what you can find.

There are a lot of crossover references in the MM, in this case for the throttle gear safety switch, in 91-20-1 p30 for WE03B and WE03C.

It's annoying that the crossovers aren't made more obvious in the IPC/SMM.   FWIW, the -102L5 works, too.    It's what was originally in my gear safety switch installation until it broke in two during testing during my annual inspection a couple years ago.   I put a V3L-3 in there.

[Ragsf15e]

Sometimes the hydraulic flaps make me smile…

[PT20J]

3 minutes ago, Ragsf15e said:

Sometimes the hydraulic flaps make me smile…

Until the leak 

[Ragsf15e]

1 minute ago, PT20J said:

Until the leak 

Yes.  Then I’ll be crying for help, true enough.

[Pinecone]

13 hours ago, N201MKTurbo said:

The red switch is not the correct switch. If you look in the parts manual, you will see they should be the same. The part number in the manual is the micro switch part number. They are hard to find. If you look on EBay long enough, you will find some new ones for a reasonable price.

Looking the IPC it seems to show that switch at V3-1 Microswitch.  I searched that and found a number of sources for them new.

But that seems to be without the lever and with screw terminals.  V3L would with with the lever.

Here is the Eaton one - https://www.frommelectric.com/2814968/Product/

 

 

[MatthiasArnold]

While treating them with contact cleaner operate them several (many) times.
I went through this procedure app. 3 yeas ago - works like a charm since then.
However, if they fail again in the near future replacing the switches is the way to go.
 

[MikeOH]

9 hours ago, Ragsf15e said:

Sometimes the hydraulic flaps make me smile…

Best design is the entirely mechanical flaps on the M20B. No pumps, motors, wires, fuses, or switches. And,  Instant activation up or down!

Not sure why they got rid of them?

[Fly Boomer]

10 hours ago, EricJ said:

The Microswitch/Honeywell V3-1/JV-5 crosses to an Eaton SS12ET10-102L3, which shows up elsewhere in the IPC/MM, but is the same part as the V3L-3.   Sometimes you can still find those, or if you're looking for some just try for both and see what you can find.

There are a lot of crossover references in the MM, in this case for the throttle gear safety switch, in 91-20-1 p30 for WE03B and WE03C.

It's annoying that the crossovers aren't made more obvious in the IPC/SMM.   FWIW, the -102L5 works, too.    It's what was originally in my gear safety switch installation until it broke in two during testing during my annual inspection a couple years ago.   I put a V3L-3 in there.

I'm guessing the "L" means it has a lever.  Found this one on Mouser for way less than the Ebay one above.  Will it work?

 

[Fly Boomer]

18 minutes ago, MikeOH said:

Best design is the entirely mechanical flaps on the M20B. No pumps, motors, wires, fuses, or switches. And,  Instant activation up or down!

Not sure why they got rid of them?

Same reason cars have power windows.  People just want to push a button.

[rickseeman]

Needed a similar switch for my Ovation last week. Called Lasar. They were out of stock, but she said Mooney had one so they shipped it to me. Thanks Lasar. 

[PT20J]

38 minutes ago, Fly Boomer said:

I'm guessing the "L" means it has a lever.  Found this one on Mouser for way less than the Ebay one above.  Will it work?

 

No, it doesn’t have the roller at the end of the lever.

[PT20J]

19 minutes ago, rickseeman said:

Needed a similar switch for my Ovation last week. Called Lasar. They were out of stock, but she said Mooney had one so they shipped it to me. Thanks Lasar. 

What did it cost? I notice that LASAR is stocking fewer parts and marking them up more lately. Any MSC can order parts from Mooney. It might be best to get pricing from more than one if the part is expensive. 

[rickseeman]

$9.50 but it was a stall microswitch