Caliper rework on CB360
- Thread starter Jocassee
- Start date
Check my post just a few down from yours, http://www.dotheton.com/forum/index.php?topic=21219.0
My XS650 has two pistons so I bought a grease fitting for the bleeder side and the inlet side, got them at the local Ace Hardware store. Just look around the plastic tray aisle and you'll eventually find the metric grease fitting drawer, take the caliper with you and find what you need. Be sure to gather every shop towel and old T-shirt you got because it will be messy. Pop on your grease gun and pump slowly until the pistons pop out enough to grab them with pliers or vise grips, if one pops first just put a hose clamp around that one to prevent it from stopping the other from popping out. I also soaked the calipers in PB Blaster for a few days before doing this operation, someone else suggested soaking in diesel fuel for a few days. Worked for me, mine were so frozen I thought I was gonna have to go to the machine shop but this worked for me. Now all I have to do is clean, clean, clean the grease out of the caliper body. Oh, I'd buy new pistons and a rebuild kit if your's are as bad as mine.
Terry
J'ville, Fl.
My XS650 has two pistons so I bought a grease fitting for the bleeder side and the inlet side, got them at the local Ace Hardware store. Just look around the plastic tray aisle and you'll eventually find the metric grease fitting drawer, take the caliper with you and find what you need. Be sure to gather every shop towel and old T-shirt you got because it will be messy. Pop on your grease gun and pump slowly until the pistons pop out enough to grab them with pliers or vise grips, if one pops first just put a hose clamp around that one to prevent it from stopping the other from popping out. I also soaked the calipers in PB Blaster for a few days before doing this operation, someone else suggested soaking in diesel fuel for a few days. Worked for me, mine were so frozen I thought I was gonna have to go to the machine shop but this worked for me. Now all I have to do is clean, clean, clean the grease out of the caliper body. Oh, I'd buy new pistons and a rebuild kit if your's are as bad as mine.
Terry
J'ville, Fl.
I did finally get this thing apart. There was some movement in it already so I put an air compressor on it and it popped right out. There is only a very small amount of pitting on it with a little rust. I think my main problem stemmed from the monumental amount of sludge in the bottom of that thing.
iagsxr
frmly IAGSXR
That's usually the case.
I've never had one that compressed air wouldn't dislodge. The sludge inside holds them and also many times there's corrosion on the rotor side of the seal from dissimilar metal proximity.
Typically wire wheel the piston and then go over it lightly w/Scotchbrite. If the pitting's not were the seal rides it's incidental.
Clean the bore w/Scotchbrite if you're the kind of guy that can do that without muckering it up.
I've never had one that compressed air wouldn't dislodge. The sludge inside holds them and also many times there's corrosion on the rotor side of the seal from dissimilar metal proximity.
Typically wire wheel the piston and then go over it lightly w/Scotchbrite. If the pitting's not were the seal rides it's incidental.
Clean the bore w/Scotchbrite if you're the kind of guy that can do that without muckering it up.
Be careful using a wire wheel to clean your caliper pistons - you can easily gouge them and turn them into junk.
When I worked in the shop I used to spin them up in the lathe and clean them with some 600 wet and dry. Always best to run the sandpaper / wire brush AROUND the piston - never sand along it's length or you can create grooves that will cause leakage past the seals.
And compressed air is the best way to remove stuck pistons without covering your workshop in grease
When I worked in the shop I used to spin them up in the lathe and clean them with some 600 wet and dry. Always best to run the sandpaper / wire brush AROUND the piston - never sand along it's length or you can create grooves that will cause leakage past the seals.
And compressed air is the best way to remove stuck pistons without covering your workshop in grease
