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Big Rig
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« on: February 18, 2023, 10:33:12 AM » |
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How can i remove them? One on each side...Tried compressed air...do they have to be replaced?
Bummed, 1999 interstate with only a little 100k on the clock.
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hubcapsc
Member
Posts: 16769
upstate
South Carolina
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« Reply #1 on: February 18, 2023, 11:06:01 AM » |
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How can i remove them? One on each side...Tried compressed air...do they have to be replaced?
Bummed, 1999 interstate with only a little 100k on the clock.
I have an OK air compressor. Once I had to take calipers to the man at NAPA anyhow, it took his giant compressor to get the pistons out. People talk of getting a fitting that allows to hook your grease gun to the caliper and pumping the pistons out with grease... If they're toast, ebay calipers are generally a good deal. I like Pinwall, he lists the mileage of the bikes his parts come from... -Mike |
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98valk
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« Reply #2 on: February 18, 2023, 11:26:52 AM » |
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How can i remove them? One on each side...Tried compressed air...do they have to be replaced?
Bummed, 1999 interstate with only a little 100k on the clock.
clean exposed end of piston with liquid wrench and 0000 steel wool, and/or soak ends in some liguid wrench and then try the compressed air. I'm in blackwood if u want to bring them over and try here. we met in wildwood yrs ago with andy and his I/S with the bad battery. I have new pistons here just in case. |
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1998 Std/Tourer, 2007 DR200SE, 1981 CB900C 10speed
1973 Duster 340 4-speed rare A/C, 2001 F250 4x4 7.3L, 6sp
"Our Constitution was made only for a Moral and Religious people. It is wholly inadequate to the goverment of any other."
John Adams 10/11/1798
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Valker
Member
Posts: 2995
Wahoo!!!!
Texas Panhandle
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« Reply #3 on: February 18, 2023, 12:10:24 PM » |
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When I remove mine to do work on them, I usually pull the caliper then use the brake lever or pedal to compress the pistons onto the pads without the disk or onto a piece of wood to get them most of the way out.
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I ride a motorcycle because nothing transports me as quickly from where I am to who I am.
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hubcapsc
Member
Posts: 16769
upstate
South Carolina
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« Reply #4 on: February 18, 2023, 12:21:24 PM » |
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When I remove mine to do work on them, I usually pull the caliper then use the brake lever or pedal to compress the pistons onto the pads without the disk or onto a piece of wood to get them most of the way out.
Before I had ever done this, I thought it sounded like a terrifying way for me to make a big mess. Now that I have done it this way numerous times, I still think it is terrifying, but it works great! -Mike |
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-mike-
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« Reply #5 on: February 18, 2023, 02:03:00 PM » |
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Grease gun it is.  -mike- |
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old2soon
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« Reply #6 on: February 18, 2023, 06:51:57 PM » |
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When you Do git em out look over the pistons and the bores. Years ago the fronts on my I/S froze up. I was able to remove them with air from the same shop that services my cage. I have a small compressor in my shop BUT it no pack enough P S I or C F M! But the owner where the cage is serviced extends me the courtesey of his shop and I DO NOT Abuse That Privelege! That bright shiny finish of the piston Is part of the reason they seal up nicely. When using that 0000 steel wool go easy! That shiny surface IS rather easy to scar up. I just decided to replace all 4 while I was at it! RIDE SAFE.
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Today is the tommorow you worried about yesterday. If at first you don't succeed screw it-save it for nite check. 1964 1968 U S Navy. Two cruises off Nam.
VRCCDS0240 2012 GL1800 Gold Wing Motor Trike conversion
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indybobm
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« Reply #7 on: February 19, 2023, 07:32:38 AM » |
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I have used the grease gun method. Works good but a mess to clean up unless you have a parts washer.
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So many roads, so little time
VRCC # 5258
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da prez
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« Reply #8 on: February 26, 2023, 05:54:06 PM » |
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S O M E T I M E S pushing them back in a little will loosen them up, then air or hydraulic pressure to get them out.
When I was working at the bike shop , we had a customer come in with an old set of calipers frozen for several years. Claims they tried every trick known. I used the grease gun method and had them out in about 15 minutes.
On dual pistons , block the one that pushes out first. I use a piece of 1/4 inch plywood.
da prez
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Big Rig
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« Reply #9 on: April 06, 2023, 05:29:43 PM » |
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Well....I got three of the four removed....Christmas story line "You'll shoot your eye out kid" the third one sort of shot out like a cannon after 160psi blast  ....The forth one....no luck. Was able to find a used left hand cheaper than the pistons themselves. Hope to have her back on the road on the weekend... |
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hubcapsc
Member
Posts: 16769
upstate
South Carolina
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« Reply #10 on: April 06, 2023, 06:19:28 PM » |
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Once one of them pops out, its over... I used a couple of one-bys to let the air blow my pistons out together in stages... after they came out this far, I removed one of the one-bys...  -Mike |
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RonW
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« Reply #11 on: April 06, 2023, 07:02:59 PM » |
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160-psi !! Yeh, you're suppose to block the pistons with something. These vice grip brake piston pliers might work. They rotate the piston but cost more that the 4 pistons.  Somebody mentioned these types don't work on Valkyrie brake pistons.  [edit]I saw this video on Youtube a few year ago. The author uses a brake piston pliers with a diy gear puller. Below, brake piston pliers locked inside piston. Washers, nut and bolt serve as diy gear puller.  Bolt has clearance to move up and down.  |
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« Last Edit: April 23, 2023, 07:44:22 AM by RonW »
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2000 Valkyrie Tourer
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Big Rig
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« Reply #12 on: April 13, 2023, 03:29:32 PM » |
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She is bac on the road....the plan moving forward is to clean the pistons at each brake change...somethingf I had not done the last couple of changes....Thanks all for your ideas...Ride Safe  |
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Jess from VA
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« Reply #13 on: April 13, 2023, 03:40:42 PM » |
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Something that helps is to do periodic scrubbing of the brakes with stiff bristle bottle brushes and mild corrosive mag wheel cleaner or S100 or Spray Nine, then hot soapy water, then blow off with a leaf blower. It gets rid of dirt and crud and pad dust (which pollute the pistons over time). I almost always have better, smoother working brakes afterwards. I'll do this before I wash the whole bike.
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