Author Topic: This Is The EPIC Soggs 92K75 MAGA Thread  (Read 9975 times)

Offline Soggz

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This Is The EPIC Soggs 92K75 MAGA Thread
« on: January 04, 2019, 06:43:11 PM »
Hi. I recently bought a k75c that had been parked since 2008.
It was sat in a guys garage. I got it home,had to put a new fuel pump and rubber housing in it,as it had turned to black jam and blocked the pump.
Put the new set up in,and it started. Albeit a bit rough,but it works. The indicators worked,there was a pop,and now they don't. Admittedly,it's hard to start,but it does start. Also,I let it run for about 15 mins,and noticed the temp light came on,the fan never,and water was coming back into the overflow resavoir bottle(?) by the battery.
I have no real idea about these k bikes apart from they seem to have a lot of electrics on them. I have recently rebuilt a cx500 Eurosport which I turned into a street brat cafe racer type thing,so I know mechanics.
Please,any help would be great,as I have never played with fuel injection systems on a bike before.
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Offline Soggz

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Re: This Is The EPIC Soggs 92K75 MAGA Thread
« Reply #1 on: January 04, 2019, 06:53:28 PM »
Hi,I have recently bought a k75c.
77,000 miles on the clock,but garaged since 2008.
I put in another fuel pump,filter,lines seemed OK. It started second press of the button after opening and closing the choke a few times!
The indicators worked up to that point,then 'pop'!,and then they didn't,but the horn still does,so not the fuse?
Also,today,I ran it for around 110 mins or so,the temp light came on,the fan never,and water came back through to the expansion bottle by the battery. The fan isn't,I don't think,seines,as it's easy to move with my finger.It dosnt spin really loosely,but it moves fairly freely on its own,but dosnt come on.Any help would be great.
Thanks in advance.
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Offline Soggz

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Re: This Is The EPIC Soggs 92K75 MAGA Thread
« Reply #2 on: January 04, 2019, 07:14:14 PM »
10 mins, of 110 mins.
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Offline alexg

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Re: This Is The EPIC Soggs 92K75 MAGA Thread
« Reply #3 on: January 04, 2019, 07:37:48 PM »
Flush the cooling system, get rid of the thermostat, or better yet, determine if it is working (if you know mechanics, you know how to do it), and try again. If that fails solve the overheating issue, then you have problems in the fan starting circuit. Lots of guys on this forum know how to diagnose it.

Good luck.
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Offline Chaos

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Re: This Is The EPIC Soggs 92K75 MAGA Thread
« Reply #4 on: January 04, 2019, 08:00:14 PM »
a rather lengthy article but should nail down whatever ails your fan; https://ibmwr.org/index.php/2007/06/01/cooling-fan-diagnostics/

My fan rarely comes on in normal riding, usually on a hot day stuck in traffic when you can really appreciate that blast of hot air beneath you.
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Offline Soggz

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Re: This Is The EPIC Soggs 92K75 MAGA Thread
« Reply #5 on: January 05, 2019, 05:26:48 AM »
Thank you sir, yes, I am planning to start on the cooling system tomorrow. I will dunk the thermostat in some boiling water to see what happens. Thank you for your reply.
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Offline Soggz

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Re: This Is The EPIC Soggs 92K75 MAGA Thread
« Reply #6 on: January 05, 2019, 05:34:07 AM »
Thank you sir, for your reply. Itís all new to me, so Iím scratching my head on this a bit. I just thought the fan would have come on before the temp light. I guess, at least the temp sensor is working, which is good.
Any help is good.
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Offline Soggz

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Re: This Is The EPIC Soggs 92K75 MAGA Thread
« Reply #7 on: January 05, 2019, 06:04:27 AM »
Oil.
What's the best to use?
I recently changed out my oil in my k75c.
It had been sat since 2008, so it was a bit thin,so to speak. Now.I went to our local car shop,Halfords,and all they really had was semi synthetic,synthetic oils for £40.00, which is quite expensive.
I went to another car parts shop here,and they were selling 20w50 Mineral oil for only £17.00 for 5 litres.
I here for older bikes that pure mineral oil is better for bikes with dry clutches. Is it ok to use this,and save myself,what I consider,a considerable amount of money over time?
Thank you in advance.
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Offline Scott_

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Re: This Is The EPIC Soggs 92K75 MAGA Thread
« Reply #8 on: January 05, 2019, 10:18:41 AM »
After a quick look at the schematics....

Turn signal controller is fed with 2 power circuits. Fuse #7 for the "controls electronics" and fuse #3 for switched lamp power.
Horn relay is powered from fuse #7.
The fan controller has 2 circuits feeding it as well. Fuse #6 for controls and Fuse #7 for motor power.

FYI since these bikes are fuel injected, they have no "choke" butterfly. The lever marked choke, simply opens the throttle....
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Offline Soggz

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Re: This Is The EPIC Soggs 92K75 MAGA Thread
« Reply #9 on: January 05, 2019, 12:08:41 PM »
Thank you. So Iíll go with the cheaper oil for my pocket. Oh, and you ever use duck eggs for scotch eggs? Very nice. Much richer. My mother makes them for me. More of a meal, as bigger.
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Offline Soggz

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Re: This Is The EPIC Soggs 92K75 MAGA Thread
« Reply #10 on: January 05, 2019, 12:14:48 PM »
Thank you,sir. I will renew all fuses tommorow when it is light. Hopefully, that will solve my problem.Also, re: no choke. Yes, I sort of worked that one out when opening the lever out and looking at the throttle cables.
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Offline Soggz

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Re: This Is The EPIC Soggs 92K75 MAGA Thread
« Reply #11 on: January 05, 2019, 03:29:34 PM »
That's what I wrote.
yes,  it the light came on before the fan, and then water started bubbling and spitting out of the overflow bottle, so I switched it off quick.
The fan STILL never came on...
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Offline Soggz

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Re: This Is The EPIC Soggs 92K75 MAGA Thread
« Reply #12 on: January 05, 2019, 03:31:04 PM »
I looked st mine and scratched my head, again...
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Offline Soggz

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Re: This Is The EPIC Soggs 92K75 MAGA Thread
« Reply #13 on: January 05, 2019, 04:41:13 PM »
No problem.
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Offline Soggz

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Re: This Is The EPIC Soggs 92K75 MAGA Thread
« Reply #14 on: January 05, 2019, 04:56:07 PM »
No, I changed the oil yesterday, and scratched my head on the sump looking for oil leaks around the filter...
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Offline Martin

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Re: This Is The EPIC Soggs 92K75 MAGA Thread
« Reply #15 on: January 05, 2019, 09:49:04 PM »
Brick fans are prone to seizure unless exercised occasionally. The OEM fan also has a tendency for the brush holders to melt.  You should be able to get a finger in and spin the blades, if they don't spin an aftermarket fan can be fitted. A lot of inmates also wire  in an override switch which can be used to check the condition of the fan.
Regards Martin.
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Offline Soggz

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Re: This Is The EPIC Soggs 92K75 MAGA Thread
« Reply #16 on: January 06, 2019, 02:05:55 AM »
Ok, I will take it out and have a look, eventually. I have this k as a project, so no rush.
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Offline The Mighty Gryphon

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Re: This Is The EPIC Soggs 92K75 MAGA Thread
« Reply #17 on: January 06, 2019, 09:18:49 AM »
http://www.motobrick.com/index.php/topic,11345.msg99136.html#msg99136

Follow the link in my post.  The fan I installed with this procedure has been working great for four years now.
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Offline Martin

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Re: This Is The EPIC Soggs 92K75 MAGA Thread
« Reply #18 on: January 06, 2019, 01:45:43 PM »
I have fitted my brick with a lit override switch. At least once a week I give it a test. I also turn it on when encountering heavy traffic especially in summer.
My brushes melted 20 years ago so i ended up modifing a Davies Craig fully sealed fan which is stilling going strong. The Spal as proposed by Gryph is a good modification and the way to go if your fan is stuffed. The OEM fans were'nt the best design and I would'nt bother refitting one.
Regards Martin.
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Offline Soggz

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Re: This Is The EPIC Soggs 92K75 MAGA Thread
« Reply #19 on: January 07, 2019, 11:16:01 AM »
Hi. Took the thermostat out and tested, that opens fine.
Took the rad and fan off, and connected it to a 12 battery...  nothing!, So the fan has had its day.
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Offline Soggz

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Re: This Is The EPIC Soggs 92K75 MAGA Thread
« Reply #20 on: January 07, 2019, 11:40:43 AM »
Unfortunatly, yes.
Tried both ways,but nothing.Fan spins quite freely, though.
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Offline Soggz

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Re: This Is The EPIC Soggs 92K75 MAGA Thread
« Reply #21 on: January 07, 2019, 11:48:07 AM »
Oh... on further inspection, I see that a brush mounting has melted. Thatís that, for that fan then.
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Offline Soggz

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Re: This Is The EPIC Soggs 92K75 MAGA Thread
« Reply #22 on: January 07, 2019, 11:52:37 AM »
Brick fans are prone to seizure unless exercised occasionally. The OEM fan also has a tendency for the brush holders to melt.  You should be able to get a finger in and spin the blades, if they don't spin an aftermarket fan can be fitted. A lot of inmates also wire  in an override switch which can be used to check the condition of the fan.
Regards Martin.
Good evening, sir.
Yes, unfortunatly, my brush holder on one side, too, has melted. What is this replacement fan you speak of?
I quite like the idea of it being on a separate switch, but can it also plug straight in to the exsisting loom as it it?
Electrics arnt my strong point, unfortunatly. Also, are the fans available here in the UK?
 Thanks in advance.
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Offline natalena

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Re: This Is The EPIC Soggs 92K75 MAGA Thread
« Reply #23 on: January 07, 2019, 12:54:36 PM »
Surfleet is a long ways to drive from Sommerset, but Motobins.com is located there. They are great for getting parts, and quite responsive to questions. Good luck with the fan, and "yes" Motobins has them in stock, but be prepared for sticker shock! We'll just blame it on Brexit. ;)
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Offline Soggz

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Re: This Is The EPIC Soggs 92K75 MAGA Thread
« Reply #24 on: January 07, 2019, 01:25:45 PM »
Hi.Thank you for the reply.
I looked on the site for the ban and motor,but at £215.00, I think it's a bit dear.
The spal 6.5 fan dosnt seem to be available here,or f it is,I can't seem to find it anywhere.
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