Idonthaveaclue's refurb thread - 87' K75S

[Idonthaveaclue]

Hi all- just chronicling the progress of my BMW K75S as I learn and try to have a clue. Kind of new to wrenching, but getting better!

Start:



Also have two hard bags in rough shape.

This is going to be fun!


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[Idonthaveaclue]

Splines:





Look ok - wasn't really expecting a mess. It has under 30,000 miles on it. The engine seems to be covered in oil, but the belly pan was dry. Also slapping some Shinko 230s on her and we'll see where that gets us.

Hover bike:




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[Chaos]

Trade ya splines :yes

[Scud]

For being new to wrenching, it seems like you've made a good start. Many people can go their whole life without getting both wheels off a motorcycle at the same time. Just for peace of mind, you might consider some sort of support at the front and/or back to prevent unwanted tilting.


Are you going the rest of the way in so you can lube all the splines?

[Martin]

tragkorbs can be refurbished, cracks can be plastic welded, and scratches can be buffed out. With deep scratches start with medium grade wet and dry progressing through to fine and finish off with fine cutting compound and plastic polish. I finish it off with 2-3 coats of Forever Black bumper and plastic restorer followed by a couple of coats of Surf City's Black Max. Trace oil leaks by cleaning the engine with degreaser then once dry spray the area with spray on talc. If needed start the engine the leak will show easily through the talc.
Regards Martin.

[Idonthaveaclue]

Scud:  The clutch felt great and it shifted fine. Plus these spline actually had grease on them. Maybe the next tire change?

Martin: That's a great idea.

Any secret to cleaning the grease off the splines?


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[Martin]

Degreaser and the wife's toothbrush, clean it before you put it back.
Regards Martin.

[Vespa no more]

Re: Wife's Toothbrush


Definitely clean it AND RETURN IT


I got busted on this. Cleaned the carb on my Ford whilst living in a share house. Chose the tattiest toothbrush in the bathroom. Worked a treat until...


Where's my toothbrush?
"OH F#*K... Uhmm (etc etc)... I was going to buy you a new one"
Lots of swearing.
Mate saved me by finding another.


And the footnote?
Car went better
We got married.

So if this is a share house hold - chose carefully and don't return
If already married: Tread carefully

G

[K1300S]

Go get'em!  Yank the DS out all the way and grease the other end too.

[Idonthaveaclue]

Go get'em!  Yank the DS out all the way and grease the other end too.

Mlytle- do I use pull it out? Or do I have to remove the swingarm? Does it just slide back on?

I'm recently engaged, not brave enough to flirt with death....



Just waiting on fed ex to get here with my Clymer and Moly grease.


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[The Mighty Gryphon]

Clamp vise grips on the shaft as close to the end of the swing arm as you can get and either pry the shaft out or give the vise grips a good whack with a heavy hammer.

Getting it back in, get the swing arm horizontal, slide the shaft in and get it started on the transmission splines.  It should slide back a little once it's lined up.  Then a good whack on the end of the shaft with that heavy hammer will push it down past the locking ring.  When it's in all the way, it won't easily slide out when you pull on the shaft.

[K1300S]

I was refering to pulling DS out of swing arm.  Yes, it just pops out.  Grab end with channel locks,  then tap pliers with hammer.

[Scud]

What's in a name?


The Mighty Gryphon:  "...vise grips a good whack with a heavy hammer."
mlytle: "...tap pliers with hammer."


 :hehehe

[K1300S]

Hey!  I want full credit for calling them two different names....channel locks AND pliers!

[The Mighty Gryphon]

What's in a name?


The Mighty Gryphon:  "...vise grips a good whack with a heavy hammer."
mlytle: "...tap pliers with hammer."


 :hehehe

Sometimes ya just gotta let 'em know who's boss... 

[Idonthaveaclue]

Drive shaft came out pretty easy, thanks fellas.

Finally took it for the first ride. Smoked a bit, and then again after getting gas. Valve seals?

However I've never rode a bike that's so smooth!

So the odometers broken and I found a very suspect fuel line....


Added a battery tender pig tail for heated gear and trickle charge.


Not bad for a 30 year old!


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[Scud]

Congratulations. It's electric-smooth, right?  :clap:


I'd put new fuel lines (3 required) at the top of the to-do list if I were you. IMO, it's worth it to buy the pre-shaped, BMW one that goes from tank to behind throttle bodies, but you can easily use standard fuel line (off the roll at the auto parts store) for the other two.

[K1300S]

I'd put new fuel lines (3 required) at the top of the to-do list if I were you. IMO, it's worth it to buy the pre-shaped, BMW one that goes from tank to behind throttle bodies, but you can easily use standard fuel line (off the roll at the auto parts store) for the other two.

YES!  next immediate task is replace all the fuel lines.  that one in the picture looks bad.  probably original.  like scud said, get the bmw one for behind the TB's.  heck if you are ordering, just get them all from BMW.

[Filmcamera]

At $136 from MaxBMW I didn't bother to replace the one to the TB's but maybe I will revisit that since everyone says you should.. let me just get Turkey season out the way first - the fact that I pay 50% extra in shipping and tax has made this an expensive project - I think I could have got a 2008 K1200 RS and have been riding for the last eight months for less money. 


There again where is the fun in that???

[Chaos]

Finally took it for the first ride. Smoked a bit, and then again after getting gas. Valve seals?

Probably not. Some of them just like to smoke, and yours' is legally old enough.


So the odometers broken ....

Pretty common, the plastic gears tend to go mushy and literally fall apart.  Somewhere there is a link to a place you can get replacement gears but they're pricy

[K1300S]

price is not a good reason to not replace an ancient high pressure fuel hose.  fuel lines are a safety issue.   replacing every piece of rubber anywhere on a 25+ year old bike is an expected cost of owning old stuff....

[Filmcamera]

I agree.  The fuel hoses were one of the first things I got.  The whole thing has moved on a lot since then so yes - in January new hoses are on my list...

[Martin]

Give the brick some time to settle smoking may settle. A mates brick that had been left sitting was a prodigious smoker but with miles under it's belt now smokes only if left on the side stand or after sex.
Regards Martin.

[Idonthaveaclue]

I'd put new fuel lines (3 required) at the top of the to-do list if I were you. IMO, it's worth it to buy the pre-shaped, BMW one that goes from tank to behind throttle bodies, but you can easily use standard fuel line (off the roll at the auto parts store) for the other two.

Ok - newbie question. I can only find one "pre-formed" fuel line on MAXBMW.


Part # - 13 31 1461 077 ($27.93) This is the cracked line shown in the photo to the fuel rail.


What are the other three? And the hose that goes from the crank to the air box?


http://www.maxbmwmotorcycles.com/fiche/DiagramsMain.aspx?vid=51745&rnd=12082016


 :dunno2:

[jakgieger]

1. tank to fuel pressure regulator (pre-formed)
2. regulator to rail
3. tank to rail
4. crankcase (z) breather hose
5. caps on throttle bodies
6. union of throttle bodies to intake
7. vacuum line from pressure regulator

ALL RUBBER IS SUSPECT!