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TECHNICAL MOTOBRICK WRENCHING In Remembrance of Inge K. => The Motobrick Workshop => Topic started by: Hadyn on January 22, 2013, 06:45:08 PM

Title: Cooling fan
Post by: Hadyn on January 22, 2013, 06:45:08 PM
does the fan run all the time or turn on only when riding for a long time i dont know if mine is working
Title: Re: Cooling fan
Post by: Inge K. on January 22, 2013, 07:18:57 PM
The fan should start when the engine reaches 103oC.
Not unusal that the fan is stucked, caused by to less use..........and high pressure washing equipment.

Inge K.
Title: Re: Cooling fan
Post by: WayneDW on January 22, 2013, 07:48:47 PM
There is an easy way to jumper the wires in the junction box under the tank.  That will tell you if your fan runs or not.  I think those instructions are in the Lieberry area here.  Do a search and see if you can find it. Or maybe someone will link if for you.
Title: Re: Cooling fan
Post by: Inge K. on January 22, 2013, 08:09:47 PM
There is an easy way to jumper the wires in the junction box under the tank.

Remove relay, and jump terminal 15 and A2.

Inge K.
Title: Re: Cooling fan
Post by: Hadyn on January 23, 2013, 08:54:08 AM
thanks will try on day off
Title: Re: Cooling fan
Post by: Marky Boy OZ on October 10, 2014, 05:16:28 AM
Hi guys,

I'm new to K1100 - my cooling fan is not working and is sticky.
The bike is pulled down - do I go straight out and get a new motor, or, is it possible to pull the motor down and clean it up.

Thanks
Title: Re: Cooling fan
Post by: Inge K. on October 10, 2014, 02:14:09 PM
The most common problem with the fan motors is melted brush holders caused by seized or sticky  axle/motor.
Title: Re: Cooling fan
Post by: Motorhobo on October 10, 2014, 02:33:38 PM
So since I don't think they even make rebuild kits for these crappy motors, your best bet is to buy a new fan motor from beemerboneyard.com or euromotoelectrics.com and swap the old with the new -- probably around $80. Search this forum for install details. Or go to the dealer and pay about $250 for a new fan assembly -- but while you're at the dealer don't drop the soap!
Title: Re: Cooling fan
Post by: Inge K. on October 10, 2014, 03:07:43 PM
It would probably be cheaper to visit a Bosch dealer/workshop, if such a thing exist down under.

Fan motor: Bosch 0 130 007 027.
Title: Re: Cooling fan
Post by: bocutter Ed on October 13, 2014, 08:06:42 AM
I'm new to K1100 - my cooling fan is not working and is sticky.
The bike is pulled down - do I go straight out and get a new motor, or, is it possible to pull the motor down and clean it up.
My K75 cooling fan was in the same condition when I got the bike year & a half ago. 'Sticky' was turning the fan by hand and the fan was spinning on a seized shaft.

It is 'possible' to remove the front cap from the fan motor, knock the armature from the cap, and polish the shaft. I lubed with 65% Moly. Don't know that I'd do it again.
Title: Re: Cooling fan
Post by: Kyle10 on October 13, 2014, 03:00:51 PM
Radiator fan replaced with Spal, possible fuel pump issue
http://www.motobrick.com/index.php?topic=2617.msg29578;topicseen#msg29578 (http://www.motobrick.com/index.php?topic=2617.msg29578;topicseen#msg29578)

This has worked great for me. Tons better than the OEM setup.
Title: Re: Cooling fan
Post by: Marky Boy OZ on October 18, 2014, 05:13:50 AM
Well boys and girls, I tried my best to make a set of bushes (from and old set of starter motor bushes - with a Dremel)

I used a 2 part epoxy to remark the housings for the bushes.........

It all went back together well - but, I could not get continuity between the two terminals, I suspect I did not make a sure enough connection between the brushs and the terminals .  . . .

K Bike cooling system brushes

(http://media-cache-ak0.pinimg.com/originals/4f/2d/48/4f2d489fc3165b7902edbc40568ad1e1.jpg)


Oh well - I tried,,,,,,

I got a 12V 3100RPM electric motor with very similar dimensions off the net today for $31 AU delivered from Hong Kong.

I will post the results.....