Parking brake adjustment issue
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Hooked
2016 BV350
Joined: 19 Feb 2015
Posts: 433
Location: Fort Collins, Colorado
Sun May 24, 2020 9:24 am quote
My lever goes up about 1/2 way before it starts to move the cable seen at the rear.

I've dripped some lube on the cable front and rear.

I've adjusted the rear (center stand up).
If adjusted for no free spin pad drag then not much to hold the scoot.
If adjusted tighter to hold the scoot, pad drag exists when brake off.

Why doesn't my lever have any effect until 1/2 up to lock no matter how I adjust the rear adjuster?

Is there some adjustment up front behind the panel I'm not seeing?
Or is this a cable/housing binding issue?

When does everyone else lever movement start to effect the rear parking brake?

I have to think I should have only slight free easy play in.the lever and then it should start to tighten the rear pad assy say when moved up an inch or so. Mine moves up very easy till 1/2 way thru the lever range before and tightening felt.

Thanks
Veni, Vidi, Posti
MP3 500, GTS 250 (both 2008 MY), 2012 Honda NC700 DCT
Joined: 02 Mar 2013
Posts: 6171
Location: Madison, Wisconsin
Sun May 24, 2020 9:48 am quote
When something like this happens to bicycle brakes it is usually caused by corrosion in the brake housing causing the wire to bind.

With the parking brake dis-engaged, try to pull the brake activation thingy on the rear wheel, to pull the brake cable and open up the parking brake.

Sorry about terminology, my point is if you can pull the cable and free up the brake then this is likely your problem.
Veni, Vidi, Posti
Neutrino MP3 492.7 AK, 2013 Moto Guzzi Norge
Joined: 29 Mar 2008
Posts: 21680
Location: Harriman, Tennessee, Tn
Sun May 24, 2020 7:01 pm quote
there are 2 adjustments . 1 is the cable length, the other is the pad grab hold.

sounds like you cable adjustment has too much slack.
adjust that first for the proper engagement of the lever.
then adjust for proper pad grab.
Hooked
2016 BV350
Joined: 19 Feb 2015
Posts: 433
Location: Fort Collins, Colorado
Sun May 24, 2020 7:02 pm quote
old as dirt wrote:
there are 2 adjustments . 1 is the cable length, the other is the pad grab hold.

sounds like you cable adjustment has too much slack.
adjust that first for the proper engagement of the lever.
then adjust for proper pad grab.
So there is an adjustment up at the lever too.
How do I best access it?
Veni, Vidi, Posti
Neutrino MP3 492.7 AK, 2013 Moto Guzzi Norge
Joined: 29 Mar 2008
Posts: 21680
Location: Harriman, Tennessee, Tn
Sun May 24, 2020 7:07 pm quote
Eakins wrote:
old as dirt wrote:
there are 2 adjustments . 1 is the cable length, the other is the pad grab hold.

sounds like you cable adjustment has too much slack.
adjust that first for the proper engagement of the lever.
then adjust for proper pad grab.
So there is an adjustment up at the lever too.
How do I best access it?
no not at the lever back at the rear wheel is both.
Hooked
2016 BV350
Joined: 19 Feb 2015
Posts: 433
Location: Fort Collins, Colorado
Sun May 24, 2020 7:09 pm quote
old as dirt wrote:
Eakins wrote:
old as dirt wrote:
there are 2 adjustments . 1 is the cable length, the other is the pad grab hold.

sounds like you cable adjustment has too much slack.
adjust that first for the proper engagement of the lever.
then adjust for proper pad grab.
So there is an adjustment up at the lever too.
How do I best access it?
no not at the lever back at the rear wheel is both.
Ok. So I adjusted the barrel/lock nut adjustment.
How does the other work?
Veni, Vidi, Posti
Neutrino MP3 492.7 AK, 2013 Moto Guzzi Norge
Joined: 29 Mar 2008
Posts: 21680
Location: Harriman, Tennessee, Tn
Sun May 24, 2020 7:14 pm quote
barrel lock adjustment is for cable length

you can see the 2 areas I am pointing to by my finger.
the bottom one is the pad adjustment. loosen the lock nut and then turn the screw in or out to engage the pads .

IMG_0618.jpg

IMG_0619.jpg

Hooked
2016 BV350
Joined: 19 Feb 2015
Posts: 433
Location: Fort Collins, Colorado
Sun May 24, 2020 7:16 pm quote
Ah that's what I'm missing thanks!
Hooked
2016 BV350
Joined: 19 Feb 2015
Posts: 433
Location: Fort Collins, Colorado
Sun May 24, 2020 7:18 pm quote
Which one do I set first?
Any tips or tricks?
Veni, Vidi, Posti
Neutrino MP3 492.7 AK, 2013 Moto Guzzi Norge
Joined: 29 Mar 2008
Posts: 21680
Location: Harriman, Tennessee, Tn
Sun May 24, 2020 7:19 pm quote
Eakins wrote:
Ah that's what I'm missing thanks!
after you adjust slack. set the brake handle then adjust the pad adjuster and test by pushing the scoot forward and backward with it on. and test with it off so not to drag.
Hooked
2016 BV350
Joined: 19 Feb 2015
Posts: 433
Location: Fort Collins, Colorado
Sun May 24, 2020 7:24 pm quote
Thanks!
Hooked
2016 MP3 500 Sport
Joined: 21 Jun 2007
Posts: 143
Location: Indianapolis, Indiana
Mon May 25, 2020 4:46 am quote
Old as Dirt - You are the man!
old as dirt wrote:
Eakins wrote:
Ah that's what I'm missing thanks!
after you adjust slack. set the brake handle then adjust the pad adjuster and test by pushing the scoot forward and backward with it on. and test with it off so not to drag.
Hooked
2016 BV350
Joined: 19 Feb 2015
Posts: 433
Location: Fort Collins, Colorado
Tue May 26, 2020 7:24 pm quote
Got it working.

So the pad adjuster lock nut also holds the pull arm for parking brake mechanism.
It's multi-star shape allows you to reposition the arm if you run out of barrel adjuster.

I did not run out of barrel adjustment thread, that was not my problem, but did move the arm down 1 star point and thus I could turn in the barrel adjuster to reset it for more future adjustment.

I did not play with pad adjustment at all, because my real issue is below.

Main issue was really cable binding in the housing.
Up front the rubber boot around the brake arm was wearing in the middle so I trimmed it up cleaner.

Then I had a easy gap to get to where the cable goes in.ghe housing.
I placed a flash light at the bottom area and placed drips of bicycle chain/cable lube on small flathead. Then went in with that lubed tip and dabbed it on the cable. It wicked in. I repeated many times over, let it soak over night and exercised the cable. It loosened up and I pulled on it at the rear too. Took awhile.

I also exercised the rear mechanical unit back and firth and it expanded out more after a few times. The springs job is to pull it all out and open and take up cable slack.

With all of this rear rear arm moves alot more now.
It had very little before.

I adjusted the barrel (the is no front adjustment at all) so the lever has just a little free slack. When parked it locked solid now.

I suspect washing has gotten water ie rust down into the cable housing over time and lube is needed at the front down and in from time to time. A drip luber with a long nozzle or such would work best but using a small flathead to dab oil on worked too.

Thanks everyone!
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