BMW K bikes (Bricks)

You are not connected. Please login or register

View previous topic View next topic Go down  Message [Page 1 of 1]


1Back to top Go down   Front brakes - bleeding pain Empty Front brakes - bleeding pain on Fri Jun 30, 2017 3:33 pm

timo27

timo27
Silver member
Silver member
I was having trouble bleeding the front brakes and this did the trick, just bang 10 psi on via a stirrup pump, not sure if this is the done thing or not???
Front brakes - bleeding pain 19554100_10213449534098214_7545581190687879077_n

    

2Back to top Go down   Front brakes - bleeding pain Empty Front Brakes - bleeding pain on Fri Jun 30, 2017 7:53 pm

Tom FKR

Tom FKR
Life time member
Life time member
G'day, some time ago I was having the same problem. I finished up putting the bike on the side stand and turning the handle bar to the left so the brake fluid reservoir is at the highest point. Take the brake fluid cover off the gently start tapping the brake lever. Tiny bubbles will start floating to the top. Keep doing this for about 5 to 10 minutes or until no more bubbles appear. Works a treat. Cheers Tom


__________________________________________________
1993 K75 Slightly Modified
2010 BMW F650GS Twin
1992 R100R
    

3Back to top Go down   Front brakes - bleeding pain Empty Re: Front brakes - bleeding pain on Sat Jul 01, 2017 1:41 am

MartinW

MartinW
Life time member
Life time member
I used to  pressure bleed, but I now vacuum bleed with my home made bleeder.Front brakes - bleeding pain P3120011



Last edited by MartinW on Sat Jul 01, 2017 6:35 am; edited 1 time in total

    

4Back to top Go down   Front brakes - bleeding pain Empty Re: Front brakes - bleeding pain on Sat Jul 01, 2017 6:32 am

Basic2

Basic2
Platinum member
Platinum member
Tom Grabau wrote:G'day, some time ago I was having the same problem. I finished up putting the bike on the side stand and turning the handle bar to the left so the brake fluid reservoir is at the highest point. Take the brake fluid cover off the gently start tapping the brake lever. Tiny bubbles will start floating to the top. Keep doing this for about 5 to 10 minutes or until no more bubbles appear. Works a treat. Cheers Tom
That worked for me too.

Richard.


__________________________________________________
K100 Basic 2
11/1987 6308319K100CJ
Marakesh Red
    

5Back to top Go down   Front brakes - bleeding pain Empty Re: Front brakes - bleeding pain on Sat Jul 01, 2017 9:43 am

Holister

Holister
Life time member
Life time member
I bought a cheap vacuum pump off ebay. I works a treat. A good bleed, very fast, with minimal fuss. Even on the K1100RS after disconnecting the ABS.


__________________________________________________
1988 K100RT     VIN No.  0094680
1989 K100RT     VIN No.  0097367 (naked)  
1996 K1100RS   VIN No.  0451808
 Front brakes - bleeding pain Austra12    Fuel:  95 Octane
Engine Oil: Nulon Full Synthetic 15W50
Gear Box Oil:  Nulon Synthetic 75W90
    

6Back to top Go down   Front brakes - bleeding pain Empty Re: Front brakes - bleeding pain on Sat Jul 01, 2017 1:22 pm

duck

duck
Life time member
Life time member
In addition to putting it on the center stand and turning the bars left, you can also loosen the screw that holds the throttle perch and rotate the perch so that the hole in the top of the master cylinder is the highest point. Then slowly squeeze the brake lever to get any air bubbles out.


__________________________________________________
Current stable:
86 Custom K100 (standard fairing, K75 Belly pan, Ceramic chromed engine covers, paralever)
K75 Frankenbrick (Paralever, K11 front end, hybrid ABS, K1100RS fairing, radial tires)
86 K75C Turbo w/ paralever
94 K1100RS
93 K1100LT (x2)
91 K1
93 K75S (K11 front end)
91 K75S (K1 front end)
14 Yamaha WR250R
http://www.ClassicKBikes.com
    

7Back to top Go down   Front brakes - bleeding pain Empty Re: Front brakes - bleeding pain on Sat Jul 01, 2017 5:38 pm

Dai

Dai
Life time member
Life time member
Tie the lever hard back against the handlebars and leave it overnight. Or hang a dirty great weight from the foot pedal if doing the rear brake. I've never figured out the theory behind this one but it does work.


__________________________________________________
'83 K100 upgraded to K100RS spec
Others...
'78 Moto Guzzi 850-T3, '79 Moto Guzzi 850-T3 California,'93 Moto Guzzi 1100ie California,
'03 Suzuki Blandit GSF600SK3 (NFS any more because wifey has claimed it)
    

8Back to top Go down   Front brakes - bleeding pain Empty Brake Bleeding on Sun Jul 02, 2017 6:58 am

redrockmania

redrockmania
Silver member
Silver member
I agree with Cpt. Holister that vacuum bleeding is the way to go. The Mityvac vacuum bleeder is well made and will last a lifetime being made of precision die cast metal. If you are getting nowhere in terms of shifting stubborn air bubbles often the best thing to do is leave the system overnight and usually the stubborn bubbles will have purged themselves.

    

9Back to top Go down   Front brakes - bleeding pain Empty Re: Front brakes - bleeding pain on Sun Aug 25, 2019 8:28 am

Mick67

Mick67
active member
active member
Many thanks to MartinW and neighbour Dave for helping me with brake line replacement today - an hours job turned into 6hrs!!! Thanks for perseverance and patience and willingness to share knowledge, tips and tools.

I had replaced rear line and reservoir hose all ok but had a poor bleed. Left it and moved onto front. All went well until MC line to steering head...didn't seem to fit. Put old one back on and spent an hour getting enough brakes to get around to Martins place to use his (kindly offered) vacuum bleeder and experience.

The new line supplied was never going to fit....Daves neighbour is a hydraulics line fella and made me up a new one that afternoon (mighty effort and much appreciated). A good hour or more trying to bleed (including a leak and banjo bolt alteration and multiple wasted crush washers) fixed the leak but still couldn't get firm brakes. Got enough brakes to make a cautious ride home.

Put on centre stand - steering full lock left, took cap off MC reservoir and taped lever for a couple of hours...Got some bubbles...put on side stand full left lock and squeezed lever, last stubborn bubble out.....Thank you K100 forum!!!

Brakes are as hard as.....well many things.

Again thanks to Martin and the forum for sharing the wealth.

Cheers Mick


__________________________________________________
K100RS 1984
VIN 0013414
    

10Back to top Go down   Front brakes - bleeding pain Empty Re: Front brakes - bleeding pain on Mon Aug 26, 2019 5:23 pm

Matthew-Brisbane

Matthew-Brisbane
Life time member
Life time member
Good to hear Mick 

I had to roll the perch to get the last bit of air out 

How do you like the higher bars ?


__________________________________________________
1986 K100 RS Motorsport
#### K100 RS Project 
2011 R1200 GS
    

View previous topic View next topic Back to top  Message [Page 1 of 1]

Permissions in this forum:
You cannot reply to topics in this forum