BMW K bikes (Bricks)

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1Back to top Go down   Hand brake  Empty Hand brake Thu Mar 17, 2016 7:26 pm

akarua01

akarua01
active member
active member
Hi again (shouldn't leave your bike sitting) now the front brake lever won't pump up pressure. I haven't pulled it apart yet. Do I just strip it down or is there a simpler fix?

    

2Back to top Go down   Hand brake  Empty Re: Hand brake Thu Mar 17, 2016 8:22 pm

Rick G

Rick G
admin
admin
If there is any fluid leaking out you probably need a kit to fix it but try bleeding the system first. I had air get into the system on the K100 once and never figured out how.


__________________________________________________
"Man sacrifices his health in order to make money.
Then he sacrifices money to recuperate his health.
And then he is so anxious about the future that he does not enjoy the present; the result being that he does not live in the present or the future; he lives as if he is never going to die, and then dies having never really lived."   Dalai Lama


Bikes 2004 K1200GT 1998 K1100 LT, 1986 K75 GS.
    

3Back to top Go down   Hand brake  Empty Re: Hand brake Thu Mar 17, 2016 9:22 pm

Holister

Holister
Life time member
Life time member
+1 that... but if its leaking around the base of the reservoir it'll just be the o-ring on the base. Cheap and easy to replace.


__________________________________________________

1989 K100RT     VIN  0097367 (naked)  
1996 K1100RS   VIN  0451808
 Hand brake  Austra12    Fuel:  95 Octane
Engine Oil: Nulon Full Synthetic 15W50
Gear Box Oil:  Nulon Synthetic 75W90
    

4Back to top Go down   Hand brake  Empty Re: Hand brake Thu Mar 17, 2016 10:23 pm

Two Wheels Better

Two Wheels Better
Moderator
Moderator
Cheap and easy, unless the PO never flushed the fluid like on my K100. The taper where the o-ring seats was corroded so it leaked even after a thorough clean up... replacement of the hydraulic portion and reservoir where my only options.


__________________________________________________

1970 R60/5, '77 R75/7-R100, '85 K100'87 K75C, '87 K100RS, '93 K11-K12 Big Block, '93 K1100RS, '95 R100-Mystic, '96 K1100RS, '98 K1200RS, '00 K1200RS, '02 K1200RS, '03 K1200GT, '04 R1150R'04 R1150RT, '05 K1200S, #1 '06 K1200R, #2 '06 K1200R, '07 K1200R, '09 K1300GT, '13 R1200RT-P & 2022 S1000XR

"Do you ever read any of the books you burn?" "That's against the law!" "Oh, of course."
~Ray Bradbury, science-fiction writer (22 August 1920 - 2012)
    

5Back to top Go down   Hand brake  Empty Re: Hand brake Fri Mar 18, 2016 8:50 am

Holister

Holister
Life time member
Life time member
I read somewhere that once they start to corrode they've had it... the corrosion will always return. Fortunately, when I pulled mine apart to replace the o-ring, it was in ok condition.


__________________________________________________

1989 K100RT     VIN  0097367 (naked)  
1996 K1100RS   VIN  0451808
 Hand brake  Austra12    Fuel:  95 Octane
Engine Oil: Nulon Full Synthetic 15W50
Gear Box Oil:  Nulon Synthetic 75W90
    

6Back to top Go down   Hand brake  Empty Re: Hand brake Fri Mar 18, 2016 9:11 am

charlie99

charlie99
VIP
VIP
about to do mine again twb

the refurb I did a few years ago seemed to seal ok ...but I have noticed that it is leaking from the same area that you mention
fortunately this time I have an dremel type tool that can resurface the inner seal area / core of the reservoir metal work
its the pitting around the seal area I see as the issue
ill give it a try at least and report my findings

meanwhile I'm onto a hopeful solution to the core of the master cylinder piston- bore that might be a good recommendation instead of throwing $200 aussie sheckles away to the dealers for a new master cylinder

hope you find a solution mate
cheers


__________________________________________________
cheezy grin whilst riding, kinda bloke ....oh the joy !!!! ...... ( brick aviator )

'86 K100 RT..#0090401 ..."Gerty" ( Gertrude Von Clickandshift ) --------O%OHand brake  Au-log10

'86 k100 rs.. #######..  "Fred " (f(rame) red ) ( Fredrick leichtundschnell ) - -
bits and pieces from many kind friends across the k100 world ...with many thanks ..
    

7Back to top Go down   Hand brake  Empty Re: Hand brake Fri Mar 18, 2016 11:21 am

Two Wheels Better

Two Wheels Better
Moderator
Moderator
Chaz, mine was literally flaking into bits, even carefully sculping it into some kind of funnel didn't help, and I knew it was a long shot when I fitted back up and went to bleed the brakes. It's not gushing, mind, but does set a bead of brake fluid within a coupla hours. My solution was to ask Mark and Dana at Vallantine's, a Seattle workshop, whilst delivering parts to them the other morning, whether in their pile of scrap upstairs they had a spare unit laying about. They did, and as we have a friendly relationship, gave the crusty old piece of kit to me at no cost! Praise be! Thank you. The reservoir looks like new, the innards acceptable, but I'll chuck a seal/piston kit into it and we should be laughing. I too don't wish to part with too much dosh on this project, though she's coming up pretty clean after a few essentials and a bit of a scrub up. The K100 inches closer to the road, at last.

Wish I'd known in February that you needed a MC as I've got my clean, useable RS original in my shed in Beenleigh. Doh!


__________________________________________________

1970 R60/5, '77 R75/7-R100, '85 K100'87 K75C, '87 K100RS, '93 K11-K12 Big Block, '93 K1100RS, '95 R100-Mystic, '96 K1100RS, '98 K1200RS, '00 K1200RS, '02 K1200RS, '03 K1200GT, '04 R1150R'04 R1150RT, '05 K1200S, #1 '06 K1200R, #2 '06 K1200R, '07 K1200R, '09 K1300GT, '13 R1200RT-P & 2022 S1000XR

"Do you ever read any of the books you burn?" "That's against the law!" "Oh, of course."
~Ray Bradbury, science-fiction writer (22 August 1920 - 2012)
    

8Back to top Go down   Hand brake  Empty pumps bothways Tue Apr 05, 2016 7:24 pm

akarua01

akarua01
active member
active member
Hello again well I pulled the master cylinder apart and cleaned it and when I test it, It seams to pump and suck any ideas, it was not leaking so that's not a problem. Question

    

9Back to top Go down   Hand brake  Empty Re: Hand brake Wed Apr 06, 2016 12:04 am

Rick G

Rick G
admin
admin
Check that both holes from the resevoir to the cylinder are open, one is very obvious and the other is very small and can be overlooked easily. It is about 0.5mm in diameter and is just forward (away from the lever) of the larger hole.


__________________________________________________
"Man sacrifices his health in order to make money.
Then he sacrifices money to recuperate his health.
And then he is so anxious about the future that he does not enjoy the present; the result being that he does not live in the present or the future; he lives as if he is never going to die, and then dies having never really lived."   Dalai Lama


Bikes 2004 K1200GT 1998 K1100 LT, 1986 K75 GS.
    

10Back to top Go down   Hand brake  Empty hand brake Wed Apr 06, 2016 6:21 am

Gordon Smith

Gordon Smith
Silver member
Silver member
A touch of Phosphoric Acid usually stops the dreaded white worm in Aluminium.

    

11Back to top Go down   Hand brake  Empty hole Wed Apr 06, 2016 6:57 am

akarua01

akarua01
active member
active member
Thanks as soon as I get home I'll have a look for an extra hole I only noticed one the other is probably blocked I'll be home Tuesday

    

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