Topic: 1977 CB550F Brake caliper inquiry

[GardenGnome]

Hello all, as it was brought to my attention, I supplied insufficient information about the brake caliper on my 1977 CB550F. I have taken apart the caliper and cleaned all that I can. Upon taking a look at the parts diagram for this, it seemed as if I am able to take out the cylinder. https://images.cmsnl.com/img/partslists/honda-cb550-super-sport-550-four-cb550f2-1977-usa-front-brake-caliper_bighu0048f0208_e8c9.gif
Please see part number seven in this link. That is the part I am having trouble getting out. I hope this information I've supplied is enough. Please let. E know what more I can do to assist you, in assisting me. Thank you.

I am editing this to prevent confusion. The part that I am trying to get out is the brake caliper piston. Not the cylinder. Sorry about that.

[GardenGnome]

If you can connect the caliper to the brake maser cylinder/lever, simply bleed the system and squeeze the lever; the piston will pop out.

If that is not an option for you, then many have used the Grease Gun method. Replace the bleeder screw with a Zerk fitting and use the grease to push the piston. The hydraulic force will overwhelm any "stuck, rusted" piston on the planet.

You'll have some clean-up afterwards, but your piston will be out and you can clean up and rebuild the caliper.

Oh that's awesome! I'm taking it to work tomorrow then. Looks like my lunch break is gonna busy. Thanks Calj!

[Bankerdanny]

You can also use a compressor and a blow gun with a rubber tip, something like this:

Screw the bleeder in all the way so it is closed then use the rubber tip into the brake line input. Wrap the front of the caliper in a towel or large rag so the piston doesn't shoot across the room. Slowly squeeze the trigger.

If the piston wasn't stuck it will come out. If the piston was stuck, then Cal's trick with the grease gun will get it out. It's worth trying air first though since then you don't have to clean grease out of the caliper.

[GardenGnome]

You can also use a compressor and a blow gun with a rubber tip, something like this:

Screw the bleeder in all the way so it is closed then use the rubber tip into the brake line input. Wrap the front of the caliper in a towel or large rag so the piston doesn't shoot across the room. Slowly squeeze the trigger.

If the piston wasn't stuck it will come out. If the piston was stuck, then Cal's trick with the grease gun will get it out. It's worth trying air first though since then you don't have to clean grease out of the caliper.

Oh nice! I'll probably have to try the grease gun idea first as my bleeder looks like it has spent several years in the bottom of a porta crapper. Needless to say, I'll be investing in a new one.

[Stev-o]

+1...the grease gun method works great. I recently did one when the air compressor trick would not.

Clean up is not that bad.   if you need a new bleeder screw, I like these...

http://www.ebay.com/itm/Honda-Speed-Bleeder-CB350-CB360-CB400-CB450-CB500-CB550-/391873730823?hash=item5b3d7e9907:m:mV1HrTgPK-pu4PV4aIGKNig&vxp=mtr

[GardenGnome]

+1...the grease gun method works great. I recently did one when the air compressor trick would not.

Clean up is not that bad.   if you need a new bleeder screw, I like these...

http://www.ebay.com/itm/Honda-Speed-Bleeder-CB350-CB360-CB400-CB450-CB500-CB550-/391873730823?hash=item5b3d7e9907:m:mV1HrTgPK-pu4PV4aIGKNig&vxp=mtr

Right on. I'm going to definitely need a new bleeder screw. Thanks for the pro tip!