Author Topic: Why She is Noisy and Hard to Push  (Read 1285 times)

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Offline Freebirdbeachbum

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Why She is Noisy and Hard to Push
« on: February 11, 2021, 09:28:35 AM »
The noise: The bottom of the chain is dragging across the centerstand. I'm assuming the original exhaust setup (currently a 4 into 1 culminating on the rights side of the bike) held the centerstand down to keep it from making contact with the chain? The chain has actually carved groves on the inner side of the left foot of the centerstand.

Hard to push: Brake caliper sticky. There are numerous re-build kits available but I'd like to go for quality parts but I find David Silver's prices to be a bit outrageous. Any suggestions of a compromise between David Silver and the cheapest Chinese-made ones?

Thanks in advance. Ken
1972 Honda CB 750
1980 Honda CX500 Custom
1968 Wards Riverside Benelli 125
2017 Triumph Tiger Explorer XRT
2021 Lance Havana Classic 125
1965 Moto Guzzi Lodola Gran Turismo

Offline BenelliSEI

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Re: Why She is Noisy and Hard to Push
« Reply #1 on: February 11, 2021, 10:09:49 AM »
You are correct on the centre stand. You need a bracket to hold it down.

If your caliper is not leaking, just take it apart and reuse the existing seal. Clean and polish everything, paying very close attention the the seal groove. Make a small, bent pick and scrape out all the crap in the seal groove. I also use a small brass brush wheel on my Dremel, and polish that groove spotless. If the piston is badly corroded, replace it. Have you tried your local Honda dealer for parts?

Offline goodtryer

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Re: Why She is Noisy and Hard to Push
« Reply #2 on: February 11, 2021, 10:44:20 AM »
This came with my latest acquisition. It ain't pretty but it works...

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Offline mrbreeze

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Re: Why She is Noisy and Hard to Push
« Reply #3 on: February 11, 2021, 10:54:59 AM »
The noise: The bottom of the chain is dragging across the centerstand. I'm assuming the original exhaust setup (currently a 4 into 1 culminating on the rights side of the bike) held the centerstand down to keep it from making contact with the chain? The chain has actually carved groves on the inner side of the left foot of the centerstand.

Hard to push: Brake caliper sticky. There are numerous re-build kits available but I'd like to go for quality parts but I find David Silver's prices to be a bit outrageous. Any suggestions of a compromise between David Silver and the cheapest Chinese-made ones?

Thanks in advance. Ken
Get a fine guitar string and poke it around in the small hole in the bottom of the master cylinder reservoir. The hole is real small and it gets plugged up over time. That's what fixed mine years ago.
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Offline ekpent

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Re: Why She is Noisy and Hard to Push
« Reply #4 on: February 11, 2021, 11:04:53 AM »
 As Benelli John mentioned taking it apart and getting the piston out of the caliper and cleaning everything up well including removing the seal and cleaning the groove should fix it up and its easy to do. Getting all the corrosion off the edge of the brake pads will help greatly also. Pump the piston out with your master cylinder and don't run out of fluid part way through. If you want to make it easier to push around for now whack the caliper nice and hard a couple of times with a rubber mallet.  ;)

Online newday777

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Re: Why She is Noisy and Hard to Push
« Reply #5 on: February 11, 2021, 11:09:39 AM »
If your chain is adjusted properly(???), then you must be either missing the added metal bracket that is needed for an aftermarket 4 into 1 header system to keep the swingarm low enough from the chain, or the bracket is bent up too far. I've been working on a 74 that the bracket was bent up too far. Fine tuning the bracket with a hammer helps(might have to remove the bracket and put in a vice).


This is what Kerker sent with their 4 into 1 header system.
Stu
Honda Parts manager in the mid 1970s Nashua Honda
My current rides
1975 K5 Planet Blue my summer ride, it was a friend's bike I worked with at the Honda shop in 76, lots of fun to be on it again
1976 K6 Anteres Red rebuilding project, was originally my brother's that I set up from the crate, it'll breath again soon!
Project 750s, 2 K4, 2 K6, 1 K8
2008 GL1800 my daily ride and cross country runner

Prior bikes....
1972 Suzuki GT380 I had charge of it for a year in 1973 while my friend was deployed and learned to love street riding....
New CB450 K7 after my friend returned...
New CB750 K5 Planet Blue, demise by ex cousin in law at 9,000 miles...
New CB750 K6 Anteres Red, to replace the totaled K5, I sold this K6 at 45k in 1983, I had heavily modified it, many great memories on it and have missed it greatly.....
1983 GL1100A, 1999 GL1500 SE, 1999 GL1500A

Offline Alan F.

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Re: Why She is Noisy and Hard to Push
« Reply #6 on: February 11, 2021, 11:12:34 AM »
Newday777 I have honestly never seen that before. Thank you very much I'll be using a bracket like that every time!

Offline Freebirdbeachbum

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Re: Why She is Noisy and Hard to Push
« Reply #7 on: February 11, 2021, 11:40:29 AM »
Have you tried your local Honda dealer for parts?

I find my local Honda dealers carry very little parts inventories these days for modern bikes and nothing for older bikes. It seems the internet has nearly killed their parts business.     
1972 Honda CB 750
1980 Honda CX500 Custom
1968 Wards Riverside Benelli 125
2017 Triumph Tiger Explorer XRT
2021 Lance Havana Classic 125
1965 Moto Guzzi Lodola Gran Turismo

Offline Don R

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Offline Freebirdbeachbum

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Re: Why She is Noisy and Hard to Push
« Reply #9 on: February 11, 2021, 02:11:50 PM »
What's with this reddish glue substance used to hold the pads to the caliper?
1972 Honda CB 750
1980 Honda CX500 Custom
1968 Wards Riverside Benelli 125
2017 Triumph Tiger Explorer XRT
2021 Lance Havana Classic 125
1965 Moto Guzzi Lodola Gran Turismo

Online newday777

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Re: Why She is Noisy and Hard to Push
« Reply #10 on: February 11, 2021, 03:40:08 PM »
What's with this reddish glue substance used to hold the pads to the caliper?

Most likely the PO put silicone or brake quiet compound.
Stu
Honda Parts manager in the mid 1970s Nashua Honda
My current rides
1975 K5 Planet Blue my summer ride, it was a friend's bike I worked with at the Honda shop in 76, lots of fun to be on it again
1976 K6 Anteres Red rebuilding project, was originally my brother's that I set up from the crate, it'll breath again soon!
Project 750s, 2 K4, 2 K6, 1 K8
2008 GL1800 my daily ride and cross country runner

Prior bikes....
1972 Suzuki GT380 I had charge of it for a year in 1973 while my friend was deployed and learned to love street riding....
New CB450 K7 after my friend returned...
New CB750 K5 Planet Blue, demise by ex cousin in law at 9,000 miles...
New CB750 K6 Anteres Red, to replace the totaled K5, I sold this K6 at 45k in 1983, I had heavily modified it, many great memories on it and have missed it greatly.....
1983 GL1100A, 1999 GL1500 SE, 1999 GL1500A

Offline Kevnz

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Re: Why She is Noisy and Hard to Push
« Reply #11 on: February 11, 2021, 03:45:23 PM »
Might be something like this; either used as a heat path break or to replace the missing anti-squeal ring.
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Offline bryanj

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Re: Why She is Noisy and Hard to Push
« Reply #12 on: February 11, 2021, 04:43:42 PM »
For the cost ofthe seal and safety i never reuse one and if the piston is pitted get a stainless one
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Offline Bodi

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Re: Why She is Noisy and Hard to Push
« Reply #13 on: February 11, 2021, 09:01:58 PM »
Or a phenolic piston... someone on the board used to supply them, made by modifying an automotive piston. If you can find one they work great. Stainless is also excellent. Or an original chromed steel one, probably won't rust and cause trouble for a few decades.

Offline 754

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Re: Why She is Noisy and Hard to Push
« Reply #14 on: February 12, 2021, 11:54:53 AM »
The master cylinder if sitting for a long time , may started leaking after a few hours use.. keep th art in mind if you have nice paint..
 I had one on a bike we woke up was good around town. 1 5 hours into a trip  it started leaking.. i taped a couple bits of rag around  it,  and it seemed to heal itself.. weird..
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Offline Freebirdbeachbum

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Re: Why She is Noisy and Hard to Push
« Reply #15 on: February 12, 2021, 12:46:53 PM »
I have two pairs of snap ring pliers, neither of which are long and skinny enough to get to the cir clip in the master cylinder. Before I order a long-nose pair that may or may not work, anyone know for certain what I need?
1972 Honda CB 750
1980 Honda CX500 Custom
1968 Wards Riverside Benelli 125
2017 Triumph Tiger Explorer XRT
2021 Lance Havana Classic 125
1965 Moto Guzzi Lodola Gran Turismo

Offline Don R

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Re: Why She is Noisy and Hard to Push
« Reply #16 on: February 12, 2021, 12:53:27 PM »
 Get some premium penetrating oil in there asap, you haven't lived until you break both of the ends off of a K0's snap ring. (literally making it a snapped ring) I drilled into the snap ring groove from the side with a tiny bit and popped it right out.  (do not recommend) 
 I'd also tap it with a drift punch to help loosen it. 
 I can't say for sure what brand snap ring pliers will reach, I used a borrowed one. 
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Offline seanbarney41

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Re: Why She is Noisy and Hard to Push
« Reply #17 on: February 12, 2021, 12:59:19 PM »
I share shop space with ex-pro motorcycle mechanic.  So I always try those plyers first...they have not worked yet.  Clamp the mc in your vice and use two punches.
If it works good, it looks good...

Offline Kevnz

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Re: Why She is Noisy and Hard to Push
« Reply #18 on: February 12, 2021, 01:07:13 PM »
I found a pair of snap ring pliers that have a selection of removeable tips, straight , 45 degree, right angle, etc. Ground down the sides of a straight pair until they fitted. Still a PITA, esp if they are seized in. Never thought about drilling in from the side though. One to remember.
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Offline Freebirdbeachbum

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Re: Why She is Noisy and Hard to Push
« Reply #19 on: February 12, 2021, 09:40:37 PM »
I manhandled it out with a pick. Not too elegant but a new one is included in the rebuild kit.
1972 Honda CB 750
1980 Honda CX500 Custom
1968 Wards Riverside Benelli 125
2017 Triumph Tiger Explorer XRT
2021 Lance Havana Classic 125
1965 Moto Guzzi Lodola Gran Turismo

Offline Don R

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Re: Why She is Noisy and Hard to Push
« Reply #20 on: February 12, 2021, 09:44:20 PM »
 Hot tip, when bleeding don't bring the lever all the way back to the handlebar, brake fluid can get past the piston and sit behind the dust cover. It will wait until it's over paint to drip.
No matter how many times you paint over a shadow, it's still there.
 CEO at the no kill motorcycle shop.
 You don't need a weatherman to know which way the wind blows.

Offline Freebirdbeachbum

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Re: Why She is Noisy and Hard to Push
« Reply #21 on: February 12, 2021, 09:56:17 PM »
Hot tip, when bleeding don't bring the lever all the way back to the handlebar, brake fluid can get past the piston and sit behind the dust cover. It will wait until it's over paint to drip.
I hope I’ll remember that when the time comes.
1972 Honda CB 750
1980 Honda CX500 Custom
1968 Wards Riverside Benelli 125
2017 Triumph Tiger Explorer XRT
2021 Lance Havana Classic 125
1965 Moto Guzzi Lodola Gran Turismo

Offline 754

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Re: Why She is Noisy and Hard to Push
« Reply #22 on: February 12, 2021, 09:59:46 PM »
Snall HAZET snap ring pliers do a good job.. ..l if you can find a set..
« Last Edit: February 12, 2021, 10:08:16 PM by 754 »
Maker of the WELDLESS 750 Frame Kit
dodogas99@gmail.com
Kelowna B.C.       Canada

My next bike will be a ..ANFOB.....

It's All part of the ADVENTURE...

73 836cc.. Green, had it for 3 decades!!
Lost quite a few CB 750's along the way

Offline kerryb

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Re: Why She is Noisy and Hard to Push
« Reply #23 on: February 13, 2021, 09:08:05 AM »
I'm with Kevnz, I get the three-tip set from HF, grind the tips to fit into the space available.  I also replace the pivot pin with a nut and bolt.  I do like the hole in the side idea, I can use that, thanks.
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Offline MauiK3

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Re: Why She is Noisy and Hard to Push
« Reply #24 on: February 13, 2021, 02:20:52 PM »
I had a sticky caliper that loved to drag. I found it was not the actual hydraulic piston, it was the brake puck. It jammed a little in the bore. I carefully cleaned it and made sure there were no sharp edges, so far so good.
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