Front Brake Caliper

Hello,
Im looking for a front brake caliper for my 1982 XJ650, but all the ones on ebay are for bikes with two front calipers. My model has only one rotor on the front wheel, is that right that I need a single caliper? What model XJ650 is my bike? Thanks!
DG

 

A single front disc brake indicates that you have an XJ650 Maxim models. All other versions of the XJ650 (Seca and Turbo) used dual front disc brakes.....

 

That caliper on your Bike is ALL Aluminum.
All you have to do is Overhaul that Caliper.

That's the easiest one Yamaha has to rebuild.
Get a Repair Manual.
Follow the steps to Clean and rebuild the Caliper.

If it sticks ... its because the Caliper Piston Seal has got foreign matter built-up behind the Seal in the Groove that the Caliper Seal is seated in.
Clean-out that Groove ... Good to go!

 

awsome, thanks guys! Just got the bike, its in pieces now but I cant wait to get it going,
DG

 

You're going to love that bike, it wants to give more than you think it can. You really need to watch the speedometer or you'll be getting ticketed, you betcha.

Have fun!

 

awsome, thanks!

 

Be sure to check the REAR brake too; delamination is a common issue.

 

does that go for the Seca too?

 

Yes.
If your Brakes are Binding or Dragging; an Overhaul of the Caliper will correct the Problem.

Generally speaking, the cause of most Brake Problems is the Buildup of foreign matter in the Channel which holds the Caliper Main Seal.

Moisture, Brake Dust and Fluid combine to make a substance that's like dried-on mud.
This matter builds-up behind the Seal and causes the Seal to constrict the movement of the Caliper Piston.

Many years of it will seize the Piston and require a High Pressure source, ... like a Grease Gun ... to force the Piston OUT for servicing.

Remove the Piston
Remove the Caliper Main Seal
Scrape the Crud away from the Aluminum Channel using Tools you may have to Fabricate.
Clean way the Channel Surface of all foreign matter.

Use Clean Brake Fluid as a Lubricant to reassemble the Caliper.

 

+1 to bigfitz comment about checking the rear brakes.

I let it go in one ear and out the other for a few weeks until I starting wondering about the odd drag in neutral. Guess what!! Rear brake delamination!! You're putting your life on the line not checking them.

It's rather easy and took me less than an hour to take apart and put back together. The hardest part is lining up the gears on the tire and shaft drive on remounting.