Author Topic: Brake piston / pad nylon spacer (Read 6961 times)

Mossy21 · « **Reply #25 on:** October 08, 2005, 06:47:16 PM »

Maybe the plastic washer is there to isolate the piston from the pads heat so the fluid doesn't heat up and cause brake fade....just a thought.

jph550 · « **Reply #26 on:** April 27, 2006, 08:11:14 AM »

I checked the fiche too. There are none listed for the 76 550K.

My 76550K with dual disc set up doesn't have the washers installed.

Does anyone have the size of these washers or a place one could obtain them withough buying two sets of HONDA brake pads. I imagine I could find them at a real hardware store but I'd rather not guess what size is appropriate.

I'd like to elimate the squeak in my brakes so I can focus on the ride.

thanks

Noel · « **Reply #27 on:** April 27, 2006, 08:15:43 AM »

Quote

Personally, I think the most important contribution is to guide the brake puck wear so as to keep it from cocking and jamming in the caliper bore over the life of the brake pad.

During my last brake rebuild I had an awful time getting the brake puck to stop hanging up in the caliper. It would squeeze the disk just fine but then wouldn't really let go. I eventually had to take the washer out to solve the troubles.

The whole experience left me less impressed with SOHC brakes than ever. $:-\$

jph550 · « **Reply #28 on:** April 27, 2006, 09:08:48 AM »

Quote from: Noel on April 27, 2006, 08:15:43 AM

Quote
Personally, I think the most important contribution is to guide the brake puck wear so as to keep it from cocking and jamming in the caliper bore over the life of the brake pad.
During my last brake rebuild I had an awful time getting the brake puck to stop hanging up in the caliper. It would squeeze the disk just fine but then wouldn't really let go. I eventually had to take the washer out to solve the troubles.

The whole experience left me less impressed with SOHC brakes than ever. $:-\$

Noel,
Thanks for the input. I won't worry about it too much, but I would like to try to get rid of the squeak if I can without re-lubricating the back of the pad with high temp grease every so often.

jason

cben750f0 · « **Reply #29 on:** April 27, 2006, 01:56:10 PM »

i can tell you from experience, that when i first got my F1, the brakes would squeel real bad, to the point that the caliper just wouldnt clamp properly, was near on impossible to stop, the harder you pulled the worse the squeel got, talked to my mech, who has been working on these since the day the were introduced (or so it would eseem), an he asked weather or not it had the nylon ring behind the pad?.... went home checked, no it didnt, went back got one off him, and the squeel pretty much went away. he made the comment that they started commin out in new brake pads, like they were a fix to be done next time you changed the pads.... i also had this theory validated when i put the second disc on, when i rebuilt the caliper, i lost the nylon ring that had come with the caliper, and low and behold, the first time i went to use the brakes after fitting it all up.... squeeeeeeeeeeel, was very let down, not what you expect when you goto the trouble to fit somethin new.... same thing fit the ring.... away goes the squeel.... oh and BTW.... holes dont do squat for stopping the brakes from squeelin!!!!!... peace

Noel · « **Reply #30 on:** April 27, 2006, 06:35:44 PM »

So far I haven't had any squealing (not from the brakes anyway. Schoolgirls, OTOH...

) but then I've only had the rebuilt brake on it for a few hundred miles. Time will tell, I suppose. Frankly, I can't wait to finish collecting the parts for the GoldWing front-end swap, primarily for the advantage of at least slightly more modern brakes.

The whole experience has left me thoroughly underwhelmed.

Jerry Rxman Griffin aka MuthaF'er · « **Reply #31 on:** April 30, 2006, 10:59:37 PM »

My 75 750F has one also. Never had brake squeal. My thoughts are its a vibrational damper between the pad and the piston to keep those 2 parts separated. 2 metal parts in contact and each have some clearance in the cylinder that have the rotating disc vibrating them has to equal noise. It makes sense also that it would buffer some heat from reaching the brake fluid.

Bob Wessner · « **Reply #32 on:** May 01, 2006, 02:25:43 AM »

I wonder if it wasn't also a cost saving issue. Along the way, Honda started making some changes that were obviously intended to save some dollars or cents per unit, like; airboxes all black, headlight ears all chrome, etc.

Noel · « **Reply #33 on:** May 09, 2006, 10:28:39 PM »

I was reading one of the modern bike mags the other day and noticed that a reader had written in to ask about an aftermarket product he had seen that supposedly prevented brake squeal on modern bikes.

It's nylon washer that fits in between the piston and the brake pad. How about that, eh?

The answer from the technical editor was interesting. He claimed to be familiar with the item but that it seemed to be effective in only about half the bikes he had seen it used on, so couldn't reccomend it. FWIW.

oldbiker · « **Reply #34 on:** May 10, 2006, 02:51:34 AM »

I was taught to put Copper Grease on the back of the pad to stop brake squeel.

stueveone · « **Reply #35 on:** April 27, 2007, 05:13:50 PM »

So what are the dimensions of the the nylon brake washer then? I don't understand how the washer stays in place. Is it the diameter of the piston? Man, any info would be awesome, my bike is a noisy buggar right now. I mean really bad. Point and stare bad.
stueve

jph550 · « **Reply #36 on:** April 27, 2007, 07:06:24 PM »

the washer is not the same diameter of the pad. less than an 1/8" thick and the internal diameter is more than the bump on the back of the piston side pad. when the pad is in place it can't slide off because the "bump" keeps it in place.

in lieu of the washer a good cleaning of the back side of the pads and reapplication of said "grease" as mentioned above helps the squealing. I got the stock pads with washers. the squeak was reduced, then I rebuilt the calipers and that helped a lot. one side had some glazing on it from not retracting all the way at an angle wich increased the squeak when gently applying the brakes.

good luck, they say it never goes away completely but mines no longer embarrisngly loud and constant upon application

oh, clean the disk periodically too

stueveone · « **Reply #37 on:** April 28, 2007, 02:02:44 AM »

Cool. I'll have to go to a hardware store and rig something up. Yeah, my whole brake assembly is rebuilt. So, maybe sanding the pads and that nylon disc are the ticket. Thanks for your help!
stueve

cmclellan · « **Reply #38 on:** April 28, 2007, 05:25:00 AM »

Quote from: Chris Liston on October 04, 2005, 02:43:37 PM

Try $80 US. I got mine for around 25pound UK from David Silver. still made out under dealer costs with piston seal and shipping. saved about 30 bucks.

I just bought a Honda piston 45107-300-003 at my local dealer (Powersports, Ottawa Canada) for $60.49 CDN ($54.20 USD). No nylon spacer on my K2.

jph550 · « **Reply #39 on:** April 28, 2007, 05:37:10 AM »

nylon washers come with pad sets not pistons.

Hope · « **Reply #40 on:** April 28, 2007, 12:02:38 PM »

I needed the pesky nylon spacer when I put the 750 Hondamatic brakes on my 75 CB550. Honda said they couldn't get it... didn't know what it was... etc. The local Kawasaki dealership has a really friendly guy at the service and parts counter who will try to match Kawasaki parts to what I need when Honda can't help me. I have the Kawasaki part number floating around here for when I have to get into my brakes again. Here is the Kawaski part number for that nylon spacer you need: 43049-002. I have also handwritten 43049-1098. I don't know why, but apparently I thought it served a purpose or that I may need it later. I think these spacers came 2 to a pack and they were about $1. If Honda had to order the nylon spacer, I'm sure that it would have cost a lot more. Hope this helps someone.

BTW - my brakes work just fine now!

Also, you might want to start a notebook or file folder or save a file to your computer when you start cross matching parts like this. I try to keep all my cross matched parts in a file folder and saved on my computer so that when I have to fix something again I know which make, model, and year that part came off.

stueveone · « **Reply #41 on:** April 28, 2007, 12:50:40 PM »

So, what if your piston side brake pad does not have a dimple on it? It is completely flat. There is the piston that is domed, but the back side of the puck is completely flat. Huh. Where do you guys order your brakes from? Weird.

stueveone · « **Reply #42 on:** April 28, 2007, 07:07:46 PM »

I just tore apart (literally, I had to use a hacksaw) an old rusty caliper that I had lying around and found no "dimple" on the piston side of that pad either. Are we talking genuine Honda parts only or OBB and the like? Is there a difference? I think I may have ordered mine form OBB. Are the Honda ones better?

jensk · « **Reply #43 on:** April 29, 2007, 03:57:11 AM »

I have recently installed new EBC pad on my 77 CB550. A nylon spacer/ring came with the pads.

The old pads was installed without the ring so I forgot to instal the new pad with the nylon spacer.

Right now I am riding without the spacer and the brakes are great - very firm and effective even though everything else is stock. Changed to new braided brakelines at the same time so this may account for part of the great brakes I have now. No squealing from the brakes even though the nylon spacer is on my workshop table.

jandrea · « **Reply #44 on:** April 29, 2007, 06:21:28 AM »

I had constant slight pressure from the pad to the rotor.... when i finally rebuilt the brakes...i saw the nylon bushing..and asked my honda dealer about it. they said they had never seen it and it didn't show up on the diagrams. they don't know squat at this place, but i left it out anyway when i rebuilt. the brakes felt a little squishy afterwards, but no more pad sticking!!!

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Author Topic: Brake piston / pad nylon spacer (Read 6961 times)

cmclellan

jandrea