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BINOVC
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« on: November 29, 2016, 03:18:50 PM » |
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I decided to replace my rear pads, as the wear indicator started to kick in (yeah, that metal-on-metal noise when the pad is gone). First time for me and the Valk.
Looked simple enough, but of course my luck the pistons wouldn't push back in, and I had to remove the caliper and clean up the pistons. Glad the repair manual is wrong about having to remove the rear wheel. Went fine after that.
But there was no spring that the back edges of the pads are supposed to ride on.
Iv'e never had any brake issues, except that grinding noise that told me the pads were a bit too thin.
So what is the purpose of the spring? Anti rattle?
(Anyone happen to have a spare to sell?)
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Harryc
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« Reply #1 on: November 29, 2016, 03:59:04 PM » |
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« Last Edit: November 29, 2016, 04:02:35 PM by Harryc »
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WintrSol
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« Reply #2 on: December 01, 2016, 08:17:28 AM » |
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That spring pressed the pads down, so the tab on the left in the parts diagram is against the caliper, centering them properly, and to keep them from bouncing up and down.
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98 Honda Valkyrie GL1500CT Tourer
Photo of my FIL Jack, in honor of his WWII service
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BINOVC
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« Reply #3 on: December 01, 2016, 11:16:46 AM » |
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As mine is a 2001 CF, I compared the parts diagram with the 1997 CT (link above). The number 5 "retainer" pictured and labeled on the 1997 CT, but only pictured (no label) on the 2001 CF. Also in Harry's 3rd link, the 2001 CF is not listed in the "used on these models" list. So I figure that part does not belong on an I/S. Don't know why it is pictured in the diagram though...
Also, I noticed that after a 10 mile ride to work this morning I have brake drag. I'm guessing the pistons must be gunked up inside the caliper, so I will be pulling it apart again to address this.
Initially I just cleaned up the exposed portion of the pistons.
Thanks all.
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Chrisj CMA
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« Reply #4 on: December 01, 2016, 05:08:31 PM » |
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You are supposed to have that spring.
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WintrSol
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« Reply #5 on: December 01, 2016, 05:56:44 PM » |
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As mine is a 2001 CF, I compared the parts diagram with the 1997 CT (link above). The number 5 "retainer" pictured and labeled on the 1997 CT, but only pictured (no label) on the 2001 CF. Also in Harry's 3rd link, the 2001 CF is not listed in the "used on these models" list. So I figure that part does not belong on an I/S. Don't know why it is pictured in the diagram though...
Also, I noticed that after a 10 mile ride to work this morning I have brake drag. I'm guessing the pistons must be gunked up inside the caliper, so I will be pulling it apart again to address this.
Initially I just cleaned up the exposed portion of the pistons.
Thanks all.
I see it on this diagram: http://www.partzilla.com/parts/search/Honda/Motorcycle/2001/GL1500CF+A/REAR+BRAKE+CALIPER/parts.htmlUnless you are referring to the retainer - #5 on the CT diagram. |
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« Last Edit: December 01, 2016, 05:58:40 PM by WintrSol »
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98 Honda Valkyrie GL1500CT Tourer
Photo of my FIL Jack, in honor of his WWII service
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BINOVC
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« Reply #6 on: December 02, 2016, 06:07:33 AM » |
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I do realize I'm supposed to have part #3 (pad spring). I'm just saying mine wasn't there for what I can only assume was the duration of the last set of pads. I have no idea when those pads were installed, but they were worn evenly, both pads worn pretty much the same.
However I did order a new a pad spring from the local dealer ($9.00! - ouch a little).
The retainer spring (part #5 shown on CT) is apparently ONLY for C or CT - not CF. Curious because the caliper bracket (part #4) shows the same part number for C/CT/CF. The CF does show additional (probably superseded part number) that the C/CT doesn't show. So if I'm reading the tea leaves correctly, for some reason they changed that caliper bracket on the CF.
As a matter of interest, does anyone know why they made a change in the caliper bracket between C/CT and the CF?
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hubcapsc
Member
Posts: 16781
upstate
South Carolina
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« Reply #7 on: December 02, 2016, 06:21:32 AM » |
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The whole caliper for an Interstate is different. The pistons
are smaller on an Interstate. I missed a big ride some years
ago because of rear caliper problems. I tried to use the pistons
from a salvage Interstate caliper, and that's when I noticed the
difference. It didn't occur to me then to just try to use the whole
Interstate caliper on my Tourer, but I wish now I had tried. I think
I saw a black rear caliper on a Tourer recently, so I guess it
would have been OK.
-Mike
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The emperor has no clothes
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« Reply #8 on: December 02, 2016, 06:31:34 AM » |
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The whole caliper for an Interstate is different. The pistons
are smaller on an Interstate. I missed a big ride some years
ago because of rear caliper problems. I tried to use the pistons
from a salvage Interstate caliper, and that's when I noticed the
difference. It didn't occur to me then to just try to use the whole
Interstate caliper on my Tourer, but I wish now I had tried. I think
I saw a black rear caliper on a Tourer recently, so I guess it
would have been OK.
-Mike
I didn't know that.  Wonder why they would go smaller pistons on a heavier bike ? |
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hubcapsc
Member
Posts: 16781
upstate
South Carolina
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« Reply #9 on: December 02, 2016, 07:04:24 AM » |
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Wonder why they would go smaller pistons on a heavier bike ?
Me too...
-Mike
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WintrSol
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« Reply #10 on: December 02, 2016, 09:29:52 AM » |
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Wonder why they would go smaller pistons on a heavier bike ?
Me too...
-Mike
Maybe to prevent flat-spotting the rear tire when all that weight shifts forward?  |
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98 Honda Valkyrie GL1500CT Tourer
Photo of my FIL Jack, in honor of his WWII service
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Chrisj CMA
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« Reply #11 on: December 02, 2016, 12:16:28 PM » |
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Wonder why they would go smaller pistons on a heavier bike ?
Me too...
-Mike
News to me. Maybe smaller pistons actually exert more force. Kinda like getting your foot stepped on by a woman wearing high heels |
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Hook#3287
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« Reply #12 on: December 02, 2016, 03:26:06 PM » |
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The whole caliper for an Interstate is different. The pistons
are smaller on an Interstate. I missed a big ride some years
ago because of rear caliper problems. I tried to use the pistons
from a salvage Interstate caliper, and that's when I noticed the
difference. It didn't occur to me then to just try to use the whole
Interstate caliper on my Tourer, but I wish now I had tried. I think
I saw a black rear caliper on a Tourer recently, so I guess it
would have been OK.
-Mike
Are they smaller in depth or width? Or both? I saw a black rear caliper on a Tourer recently, so I guess it
would have been OK. Don't go by that, I've painted a few black. |
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« Last Edit: December 02, 2016, 03:28:27 PM by Hook#3287 »
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hubcapsc
Member
Posts: 16781
upstate
South Carolina
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« Reply #13 on: December 02, 2016, 05:58:43 PM » |
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Smaller diameter... I don't remember now about the length...
Interstate: 45107-MN5-006
Tourer: 45107-ML4-006
-Mike
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WintrSol
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« Reply #14 on: December 02, 2016, 06:37:56 PM » |
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Wonder why they would go smaller pistons on a heavier bike ?
Me too...
-Mike
News to me. Maybe smaller pistons actually exert more force. Kinda like getting your foot stepped on by a woman wearing high heels Nope - less force. Mechanical advantage in a hydraulic system is the ratio of the master cylinder and slave, so a smaller slave would move farther with a given motion of the master, but would exert less force with the same pressure. Perhaps the MC of the interstate is smaller diameter, too? |
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98 Honda Valkyrie GL1500CT Tourer
Photo of my FIL Jack, in honor of his WWII service
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hubcapsc
Member
Posts: 16781
upstate
South Carolina
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« Reply #15 on: December 03, 2016, 04:29:33 AM » |
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Seems to be the same master cylinder PN for all Valkyries...
-Mike
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WintrSol
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« Reply #16 on: December 03, 2016, 09:09:18 AM » |
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Seems to be the same master cylinder PN for all Valkyries...
-Mike
So, we're back to less braking force, maybe because the center of gravity is higher, causing more weight to shift to the front wheel, therefore less grip on the rear? Those Honda engineers can be an inscrutable lot. ??? |
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98 Honda Valkyrie GL1500CT Tourer
Photo of my FIL Jack, in honor of his WWII service
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