Märklin Crane 7051 - Tips and tricks - Little Helpers

We are going to have a look at the Märklin remote controlled crane 7051 this week, we’ll cover a bit of history, working principles, what can go wrong and what to do to fix common problems, in other words, this is another Little helper video.
The Märklin remote controlled Crane was always one of my favourites, it is a must have accessory for any Märklin enthusiast, and a nice addition to any layout in terms of decoration or play factor.
This video is quite long, of course it can be watched in one sitting, but it is also meant to used as a reference, so I have created chapters that will help you skip to the relevant topic.
I hope you enjoy/find the video useful.
Sous titrage auto-traduit disponible, pour voir comment faire: • Petite astuce - Sous-t...
Automatisch übersetzte Untertitel verfügbar, wie macht man das? Siehe: • Kleiner Tipp - KZbin...
Chapters:
00:00 Intro
01:27 Model versions
03:52 Packaging
04:36 Marklin accessories and add-ons + 3rd party products
06:11 Things to check before buying
09:13 Unboxing an original example
11:44 Connecting the crane to power/control box + function test
12:48 Switch types to use if the control box is missing
13:42 Working principles
14:42 Motors: initial test and fault finding
15:37 Disassembling the crane
16:37 Fixing a ceased motor + maintenance
20:10 Tower base gears and clutch
21:09 Checks + freeing a ceased clutch
22:50 Function test
24:28 Reassembling the crane tower
26:20 Fixing the lifting arm
27:05 A look inside the cabin, how to open it, change bulb, connectivity
29:20 Final function test
29:55 Things to remember for a safe operation
31:23 Marklin wagons and other accessories
32:49 Conclusion
Channel email: [e-mail]
Subscription: / @the3rdrail
The trademarks mentioned in this video are the property of their respective owners and are used for description purposes.
All pictures used in this video are in the public domain to the best of my knowledge.
Picture and information sources:
www.wikipedia.com
www.marklin.de
A fun scene with accessories and conveyor belt: • Kleiner Testaufbau Mär...
A site for parts: ttn-shop.com/ersatzteilliste_...
Marklin 7051 parts diagram: www.maerklin.de/service/produ...
#Märklin #Vintage #analog #tmrguk #mobaanalog #marklin #7051
Marklin, Spielbahn , Märklin, Märklin H0, Märklin H0 model Railway, Märklin Bahn, Märklin Anlage, Märklin M Gleis, Märklin M-track, Märklin Modellbahn, Märklin Vintage, Model Railway, Märklin Retro, Märklin Nostalgie, Märklin Tinplate , Märklin Layout, Märklin running video, Modelleisenbahn, Modellbahn, M Gleis, M Track, Diecast, running session, M-Gleis, Nostalgie Bahn, Spur H0, alte Spielbahn, Märklin Trains, alte Märklin Bahn, nostalgieanlage, marklin automatik, marklin automation, analoger fahrbetrieb roulage m-gleis , voie M model trains, moba, kran 7051, marklin crane fix, fixing marklin crane, repair marklin crane, maintenance märklin trains

[@The3rdRail]

Small addendum available regarding the operation of the cab, here: kzbin.info/www/bejne/b6u0pIh8rpeVnbc

[@theretrolab2898]

Wonderful production

[@The3rdRail]

🙏

[@iainvoss265]

Thank you for this excellent video. My 7051 crane is now back to full operation!

[@The3rdRail]

Glad it helped! Have fun.

[@tomaslindstedt5681]

Thank you for this ,i have made service on my two cranes thanks to this great video :-)

[@The3rdRail]

Glad it helped

[@cclernvideos6519]

Hi, thanks for your excellent video. Especially, how to do a maintenance job. I have a 7051 on my own model railway but changed the control box with an old joystick. The advantage is a more smoothly handling the movement. And, in addition, even my 4-year-old son can operate the crane very easy. Keep up with your videos, I really like them.

[@The3rdRail]

Glad you liked it, thanks for the visit.

[@gustavofernandez484]

Excellent video!.....keep doing these helpful videos, thank you for sharing!

[@The3rdRail]

Glad you found it interesting. Thanks for the visit!

[@tomzethof4099]

Nice and handfull information. Thank you.

[@The3rdRail]

Glad it was helpful!

[@Martin.]

Interesting video from the crane. Perfect filming💪💪💪Beste Grüße, Martin

[@The3rdRail]

Perfect? I don't know about that, but thank you very much, Sir!

[@raymondleggs5508]

I love the old Art the companies used to use, it was as if they were excited about the product and they wanted you to be as excited as they were, now it's just matter of fact.

[@The3rdRail]

people change...

[@gordonholtshausen4383]

Excellent video and very useful thank you. I now need to get mine out and working on the layout.

[@The3rdRail]

You can do it! Thanks for the visit.

[@mcrsit]

I had no idea that a simple accessory like the crane could be made with such precision and level of refinement. I guess that this has to be expected by Marklin!

[@The3rdRail]

I'd say it is quite agricultural... But it is beautiful nevertheless.

[@johnjeanb]

"I had no idea that a simple accessory like the crane could be made with such precision". This is maybe a war heritage of mechanical precision manufacturing for ... well not for toys in the earlier 40s.

[@CM-he8ni]

Fascinating, your knowledge is immense, prolly more than Marklin😁If Mastermind still exists in the UK would be your chosen subject 😁

[@The3rdRail]

I don't know that much, but thanks for the compliment.

[@derbundesbahnandre8357]

Super video, thumps up. 😀🙋‍♂️🙋‍♂️👍👍

[@The3rdRail]

Thank you very much, Gruß nach Dänemark!

[@KeithHayward]

Very helpful video. I have always wanted a crane and I now have one. It is working but needs a little lubrication. My train set is from 1956 to 1957 or a year or two later.

[@The3rdRail]

Indestructible quality :) thanks for spending some of your valuable time on the channel.

[@Romin.777]

I saw a few screenshots from Ulf Gottschalk ;) I have a version 2 crane from 1955 but as you said, it's more a decorative piece. Take care.

[@The3rdRail]

credited I think...

[@ModelTrainFun]

Fantastic video - always wanted this crane - one day... Enjoy ;-)

[@The3rdRail]

don't wait too long... they are getting expensive...

[@stephanedelaval6525]

Je viens juste d’acheter un 7651. Bien sûr, tout à nettoyer. Mais fonctionnement impeccable après. Fantastique que ces grues n’aient pratiquement pas changées en 50 ans de production et qu’elles fonctionnement 50 ans après. German Qualität !

[@The3rdRail]

Félicitations, je te souhaite bien du plaisr.

[@tewuiakminiaturenh0]

hello, a nice video, well shown, I still have a Märklin crane here that doesn't move, I still have to take it apart and clean it, greetings Kai👌👌👍👍😊😊

[@The3rdRail]

Something for a rainy day :) Thanks for the visit, glad you enjoyed the video.

[@xlator49]

Great video. Thanks very much. I find the crane's turning and raise/lower speeds unrealistic...since you mentioned the motors are standard locomotive motors, I am wondering if I lower the supply voltage by connecting to the analog output of a spare analog transformer would be harmful on any way....

[@The3rdRail]

Ah, the good old taste and colours dilema😉 Lowering the voltage won't arm it. Have fun!

[@xlator49]

@@The3rdRail Tks

[@patrickmurphy6775]

You do great videos. My crane swivels and the magnet and light work but I am using one of the control boxes that you show that you said there are differences. My problem is my crane hook will not go up or down. Is this because it is the wrong control box? Thanks!!

[@The3rdRail]

Hi, glad you appreciate my videos. The cotnrol box you are using would behave like the orignal one for this function. Does the motor power on when you press the buttons?

[@patrickmurphy6775]

@@The3rdRail Everything works except the up and down motion of the hook. Using your video, I will dissasemble it today and trouble shoot it. I am glad to hear the control box i have will work!

[@The3rdRail]

Good luck!

[@patrickmurphy6775]

@@The3rdRail I have fixed the problem. It was not with the box. Meanwhile, I have discovered the 7072 box works perfectly if you block the 2nd and 4 holes from the left. The interior is exactly identical and will work if the correct holes are used. Thanks for your help!!

[@The3rdRail]

@@patrickmurphy6775 Congratulations! Not sure what you mean with the control box, but what matters is that you got your crane to work 😀Enjoy!

[@belgiangeek2671]

Now I know mine is a G2 but the hook was replaced. However I should have the original hook somewhere

[@The3rdRail]

happy hunting, and watching ;)

[@raymondleggs5508]

It's similar to the classic Lionel pre-war O gauge operating crane

[@The3rdRail]

wouldn't surprise me, there was no other way to do something like at the time.

[@kirillsiberian2013]

Bonjours Une question : ou trouver les différents accessoires pour la grue ?????

[@The3rdRail]

Dans les petites annonces ou sites d’enchères en ligne. Une recherche du numéro de référence de la pièce suffit d’habitude.

[@kirillsiberian2013]

@@The3rdRail merci je part à la chasse 😉

[@belgiangeek2671]

Will you make a video about the Faller conveyor belt we see at the end of the video?

[@The3rdRail]

If I ever get one, sure, but not likely in the near future. For now, there is a link to a video in the box at the top of the screen when I mention it in the video and also in the video description.

[@johnjeanb]

Thank you for this great Video about a very nice design by Märklin of this historic crane. Excellent didactical presentation about its history, about its working potential problems. I have the exact same crane I purchased new in the late 80s. One little point: This is a fool-proof design where there are 2 clutches: one at the base to rotate freely the cabin and the second one in the cabin on the whinch in case the motor was not stopped in time. Also, part of the box, there is a long screw, 2 fiber washers and a nut, to bolt the crane to its box. Here you may see a video about a hump yard next to the crane operated by Rocrail kzbin.info/www/bejne/iYeoon6gj95qis0 Here is a video on another Märklin crane: the large coaling station 76510, here in full automatic operation kzbin.info/www/bejne/Y6i9iJRjr8ual8k

[@The3rdRail]

Hi, thanks a lot 🙏 I am not sure about the cabin whinch clutch you are referring to: there is none in any of the cabins on my cranes, you can see in the video what happens if i don't stop the whinch at 29:55. This might have been a feature of the very first version though, but I don't have one to check. I had seen your humpyard video (I am subscriber 😀), nice job!

[@The3rdRail]

Correction... Looking at the parts list, there should be a whinch clutch. Looks like it might be stuck on all my cranes, sounds like a good topic for an additional video... I shall check my cranes now, thanks for pointing this out.🙏

[@johnjeanb]

@@The3rdRail Look into your video at 28:39 near the slanted gear, you may see a fiber washer, a metal washer, a spring. All this makes a clutch (maybe yours is adjusted too tight or glued by dried oil).

[@The3rdRail]

Yep, I quickly had a look at one of my cranes and the clutch was indeed stuck. I had always assumed this was standard behaviour as all the cranes that passed through my hands behaved the same way. You learn something new every day, aren't KZbin comments great? Thanks again.

[@The3rdRail]

Hi, I was finally looking into making a correction, and I think we were wrong about the purpose of the clutch in the cab. You'd have to pull very (very!) hard for the clutch to disengage if the winch is not stopped in time, I tried! It was very scary, and the motor stopped moving before the clutch disengaged in most cases. So, I don't think this is the main purpose of the clutch. Instead, I think the clutch is there to prevent the winch from lifting when the cab is turning. The clutch only engages when the lifting shaft (the one with a worm gear coming though the base of the cab) is rotating, the clutch will grip to and set the winch shaft in motion. If the lifting shaft is idle, the clutch doesn't grip, and the gear connected to the worm gear on the lifting shaft will turn freely around it when the cab is moving, it will not engage with the winch shaft, preventing the hook from lifting or lowering. The clutch gear adjustment is only there to position the gear in relation the to lifting shaft, I think the cab will wobble when lifting if the gear is out of position. So, this is another maintenance point to check in any case. Take care.