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Offline Ranjit  
#1 Posted : 06 August 2020 14:14:38(UTC)
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Ranjit


Joined: 18/06/2003(UTC)
Posts: 3,009
Location: Chennai, Tamil Nadu, INDIA
Hi All...

You see, I have several old locomotives which haven't run on track for many years. Recently, I got them out to have them cleaned and serviced, and I found that the black tires have hardened. It has been difficult to get them off completely. I have tried wetting it with goo-gone, IPA, etc. with not much luck. Strangely, the locomotive is running fine. Also, does anyone know how to completely remove the wheel set of the Maerklin 3075 DB 216 locomotive?

Cheers,
Ranjit
Modelling in HO Scale - Era III & IV. K+M Track, Analogue + Digital
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Offline river6109  
#2 Posted : 06 August 2020 14:49:38(UTC)
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river6109

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Location: On 1965 Märklin Boulevard just around from Roco Square
Ranjit,

you need special tools to remove any wheel set from older locos, tyres should be firm and should not be able to move while on the wheel, black rubber tyres hardly ever go hard or putting it another way whats wrong with them being hard ?

John
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Offline Ranjit  
#3 Posted : 06 August 2020 15:01:58(UTC)
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Ranjit


Joined: 18/06/2003(UTC)
Posts: 3,009
Location: Chennai, Tamil Nadu, INDIA
What "special tools" do you need to remove the wheel set, John? You see, in Chennai, the environment is not ideal. It s hot, it is humid and very dusty! The long storage time has not helped very much. I want shiny wheels so that I can put some new tires on.

Cheers,

Ranjit
Modelling in HO Scale - Era III & IV. K+M Track, Analogue + Digital
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Offline JohnjeanB  
#4 Posted : 06 August 2020 15:17:32(UTC)
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JohnjeanB

France   
Joined: 04/02/2011(UTC)
Posts: 3,114
Location: Paris, France
Originally Posted by: Ranjit Go to Quoted Post
Hi All...

You see, I have several old locomotives which haven't run on track for many years. Recently, I got them out to have them cleaned and serviced, and I found that the black tires have hardened. It has been difficult to get them off completely. I have tried wetting it with goo-gone, IPA, etc. with not much luck. Strangely, the locomotive is running fine. Also, does anyone know how to completely remove the wheel set of the Maerklin 3075 DB 216 locomotive?

Cheers,
Ranjit

Hi Ranjit

To remove the remainder of the black tires (dried rubber) you need patience and a little screwdriver to gently remove any residues from the tire groove. When a sector is finished apply a little power to the loco to rotate the wheel to the next sector to clean. Don't try to hand rotate the wheel as you may bent or lose the quartering on the wheels.

In fact the worst is to remove a transparent traction tire (in the 1950's as it hardens like hell).

Yes you will need a hex female key to remove the screw on the linkage to insert a new tire.
Using chemicals is not recommended as it may spill on the paint and damage it.
Finishing the job with a wooden toothpick in the groove while the motor is rotating to remove all residues is IMO a good idea.
Cheers
Jean

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Offline Ranjit  
#5 Posted : 06 August 2020 15:54:15(UTC)
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Ranjit


Joined: 18/06/2003(UTC)
Posts: 3,009
Location: Chennai, Tamil Nadu, INDIA
Yeah, Jean !! The key words are "patience and "gentleness" to remove the gunk. Thank you for your advice.

Cheers,
Ranjit
Modelling in HO Scale - Era III & IV. K+M Track, Analogue + Digital
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Offline kiwiAlan  
#6 Posted : 06 August 2020 18:12:56(UTC)
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kiwiAlan

United Kingdom   
Joined: 23/07/2014(UTC)
Posts: 8,102
Location: ENGLAND, Didcot
Originally Posted by: JohnjeanB Go to Quoted Post

Yes you will need a hex female key to remove the screw on the linkage to insert a new tire.


There are appropriate hex drivers in the 70900 tool kit that Marklin sells for around Euro 20, (oh, the price is creeping up, now 23.99) along with tweezers and suitable fine screw drivers. I would highly recommend you get one for servicing your items.
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Offline Ranjit  
#7 Posted : 06 August 2020 18:29:40(UTC)
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Ranjit


Joined: 18/06/2003(UTC)
Posts: 3,009
Location: Chennai, Tamil Nadu, INDIA
Will do. Thank you for your suggestion, Alan !!

When I look under the locomotive, I see a screw on the wheel set and not a hex.

Cheers,
Ranjit
Modelling in HO Scale - Era III & IV. K+M Track, Analogue + Digital
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#Get Vaccinated
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"If you have a garden and a library, you have everything you need" - Marcus Tullius Cicero
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Offline Ranjit  
#8 Posted : 07 August 2020 06:23:57(UTC)
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Ranjit


Joined: 18/06/2003(UTC)
Posts: 3,009
Location: Chennai, Tamil Nadu, INDIA
Guess what? Coconut oil has done the trick! I applied a small amount of coconut oil on the wheels last night, and went to bed. This morning, when I tried to pry the hardened rubber tires with a stiff steel wire, the gunk just broke into pieces and fell apart. I was so pleased. Yay!!

Now, to the next part. Removing the wheel set to install the #7154 tires. I don't see any hex nut to remove, but I see a screw. Does anyone have a exploded diagram of the 3075?

Cheers,
Ranjit
Modelling in HO Scale - Era III & IV. K+M Track, Analogue + Digital
_____________________________________________________________________________

#Get Vaccinated
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"If you have a garden and a library, you have everything you need" - Marcus Tullius Cicero
"Nothing is as powerful as an idea whose time has come" - Victor Marie Hugo
"If you can dream it, you can do it" - Walt Disney
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Offline ocram63_uk  
#9 Posted : 07 August 2020 08:05:46(UTC)
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ocram63_uk

United Kingdom   
Joined: 07/01/2015(UTC)
Posts: 704
Location: England, Suffolk
you have to remove the coupler, then remove the plastic frame around the wheels, mainly where the brake pads and suspension pieces are printed. at this point the wheels are free for access. I think from what I saw on the internet of this diesel loco
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Offline ocram63_uk  
#10 Posted : 07 August 2020 08:18:16(UTC)
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ocram63_uk

United Kingdom   
Joined: 07/01/2015(UTC)
Posts: 704
Location: England, Suffolk
this is the exploded diagram of the loco

https://static.maerklin....5d0fa3a3041434542003.pdf
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Offline Ranjit  
#11 Posted : 07 August 2020 08:24:38(UTC)
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Ranjit


Joined: 18/06/2003(UTC)
Posts: 3,009
Location: Chennai, Tamil Nadu, INDIA
Thank you, Marco!! I will give it a shot, and see how it goes.

Cheers,
Ranjit
Modelling in HO Scale - Era III & IV. K+M Track, Analogue + Digital
_____________________________________________________________________________

#Get Vaccinated
--------------------------------------------------------------------------------------------------------------
"If you have a garden and a library, you have everything you need" - Marcus Tullius Cicero
"Nothing is as powerful as an idea whose time has come" - Victor Marie Hugo
"If you can dream it, you can do it" - Walt Disney
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Offline Ranjit  
#12 Posted : 07 August 2020 09:20:43(UTC)
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Ranjit


Joined: 18/06/2003(UTC)
Posts: 3,009
Location: Chennai, Tamil Nadu, INDIA
After careful handling, and after removing the plastic frame that surrounds the wheels, I have managed to clean the wheels properly with IPA. I now have to order the #7154 tires, install them and test drive the locomotive. Overall, I am a happy camper !!

Thank you, Marco, Alan, Jean and John, for your expert advice and suggestions. I declare this thread closed.

Take care, stay safe and stay healthy.

Cheers,
Ranjit
Modelling in HO Scale - Era III & IV. K+M Track, Analogue + Digital
_____________________________________________________________________________

#Get Vaccinated
--------------------------------------------------------------------------------------------------------------
"If you have a garden and a library, you have everything you need" - Marcus Tullius Cicero
"Nothing is as powerful as an idea whose time has come" - Victor Marie Hugo
"If you can dream it, you can do it" - Walt Disney
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