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SinNH
Mad Brick Rider
Joined: 12 Aug 2006
Posts: 110
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 Posted: Fri Jul 19, 2019 8:21 am Post subject: Brake fluid change |
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1993 LT ABS I
Rear brake and modulator went fine.
Front modulator wouldn't give a drop, even with max vacuum ( usually use about 50% vac at the most ) so I did the calipers, went fine, about three reservoirs each and back to the modulator still nothing.
PS-- brakes felt fine before starting fluid change, same set-up as my RT, and now in the shop the front lever feels normal after fluid change.
ABS disconnected, pulled both relays about a month ago.
And, seems funny to me that the input line from the lever/reservoir connects on the modulator on the bottom port below the bleed nipple and the output line just above, and yet I can bleed the calipers, but not the nipple 20 mm above.
The bleed nipple threads into a reducing bushing or some sort. Anyone opened that up ?
Any other ideas welcomed, thanks
_________________
96 K1100 LT--gone
09 650 Strom
93 K1100LT
00 R1100RT
To put one�s life in controlled danger from time to time promotes sanity in dealing with everyday affairs. |
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Flying Duck
PsyKotic Waterfowl
Joined: 27 Jan 2005
Posts: 10102
Location: Bumf***, WA
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| Posted: Fri Jul 19, 2019 9:16 am Post subject: |
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Try using pressure instead of vacuum.
Just be careful to squeeze the brake lever VERY slowly if you have the cap off of the front reservoir. If you squeeze too fast it makes a nice little fountain of brake fluid.
_________________
93 LT (x2)
94 RS
86-97 K75F(K75/100/1100 Frankenbrick)
86 K75C w/paralever, hi perf cams,TURBO!
91 & 92 K75Ss
91 K1
86 custom K100
14 WR250R
IBA #17739 (SS1K, BBG, 50CC)
Buy parts HERE |
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SinNH
Mad Brick Rider
Joined: 12 Aug 2006
Posts: 110
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| Posted: Fri Jul 19, 2019 3:49 pm Post subject: |
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| Flying Duck wrote: | Try using pressure instead of vacuum.
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Great tip Duck! It worked, fluid came out from the get-go looking like new stuff so I guess changing the calipers with plenty of fluid sort of douches out that "neck" on the Modulator.
Thanks, now I feel that job is - really- finished.
Haven't used that method for decades. 
_________________
96 K1100 LT--gone
09 650 Strom
93 K1100LT
00 R1100RT
To put one�s life in controlled danger from time to time promotes sanity in dealing with everyday affairs. |
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Flying Duck
PsyKotic Waterfowl
Joined: 27 Jan 2005
Posts: 10102
Location: Bumf***, WA
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| Posted: Fri Jul 19, 2019 7:00 pm Post subject: |
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Glad I could help.
I think the issue with vacuum at the modulator might be that the vacuum "pulls" on both the line to the reservoir and the line to the caliper so you're not getting full vacuum.
_________________
93 LT (x2)
94 RS
86-97 K75F(K75/100/1100 Frankenbrick)
86 K75C w/paralever, hi perf cams,TURBO!
91 & 92 K75Ss
91 K1
86 custom K100
14 WR250R
IBA #17739 (SS1K, BBG, 50CC)
Buy parts HERE |
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