SMC boot questions

GaryV

Joined
Sep 28, 2015
Messages
10
Location
Sisters, Oregon
Bike
2004 ST1300A
Hi gang,
I'm a new ST1300 owner. I've read enough about the SMC issues, I'm probably sufficiently paranoid at this point.
So, I'd like to check out the current condition under the boot. I've read that I can use thumb and index finger to pinch the boot and wiggle it off correct?
Once I get it out of the groove in the cylinder and inspect stuff, I can put a little silicon lube on the rim. Does it go back in place relatively easily or is there a trick to it as well?
thanks. Appreciate all the knowledge on the forum.
-gary
 
st1300r

st1300r

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Apr 25, 2007
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4,950
Age
62
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New Jersey
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st1300 '04
STOC #
7163
Versys Chris said:
Im also new to the ST1300, but what the heck is the SMC issue? Never heard of it or seen any other posts.

Sent from my LT30p using Tapatalk
Click to expand...
There's a few threads on the smc. Some have had them corrode and stick causing the rear brake to drag.
08 and up has a slightly different drain port presumably to improve this.
 
Soontobeone

Soontobeone

Joined
May 6, 2011
Messages
517
Location
Vancouver, WA
Bike
2007 GL1800
STOC #
8714
Here are the pages from the ST1300 Service Manual that describe the Secondary Master Cylinder, aka, SMC. The SMC is part of the the left front brake caliper assembly.
 

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4jranch

4jranch

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Oct 3, 2009
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757
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Brenham, Texas
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'07 ST1300
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8073
Last edited:
ST Gui

ST Gui

240Robert
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Sep 12, 2011
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SF-Oakland CA
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Soontobeone said:
Here are the pages from the ST1300 Service Manual that describe the Secondary Master Cylinder, aka, SMC. The SMC is part of the the left front brake caliper assembly.
Click to expand...
Nicely done. When new to the forum many of the abbreviations (more than a few being non-standard) used by the cool kids make no immediate sense. Lots of oh that's what they mean moments.

Being fairly new myself I'll just volunteer that the 1300's Secondary Master Cylinder (I'm guessing Chris has a 1300 too) can a) lock up causing the rear brakes to lock the rear wheel and b) is the source of trapped air when the brakes are not properly bled leading to impaired braking ability.

Other members will no doubt fill in blanks and/or correct me. There are a lot of thread regarding the SMC.
 
Versys Chris

Versys Chris

Joined
Sep 30, 2015
Messages
20
Location
Nova Scotia, Canada
ST Gui said:
Nicely done. When new to the forum many of the abbreviations (more than a few being non-standard) used by the cool kids make no immediate sense. Lots of oh that's what they mean moments.

Being fairly new myself I'll just volunteer that the 1300's Secondary Master Cylinder (I'm guessing Chris has a 1300 too) can a) lock up causing the rear brakes to lock the rear wheel and b) is the source of trapped air when the brakes are not properly bled leading to impaired braking ability.


Other members will no doubt fill in blanks and/or correct me. There are a lot of thread regarding the SMC.
Click to expand...
Thanks for the info. Yes you are correct, I have a new to me ST1300 since last Wednesday.
 
OP
OP

GaryV

Joined
Sep 28, 2015
Messages
10
Location
Sisters, Oregon
Bike
2004 ST1300A
Thanks 4jranch. I'm reluctant to attempt the peeling back. I've had the bike a couple of weeks and finished some maintenance this weekend. Replaced coolant, clutch and brake fluid, new battery. Next weekend oil and filter. The brake bleeding didn't quite go as planned as documented in the thread I posted about the proportional control valve not bleeding. Glad I resolved it and got all the tupperware back on. :)
 
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