Rikk
New member
Not kart or car related.
We have an old Schaeff forklift at work and I was sick of paying the local company to come out and not fix the problem.
Original problem was found on a 6 month PM check. The brake cylinder, (which resides on top of each drive motor and is only for the dead-man pedal that stops the truck if the operator lifts his foot) was leaking and a new cylinder was going to be almost $2k, so they managed to find an aftermarket rebuild kit and rebuilt it.
About 5-7 hours of use after they did this, the right brake would grab when going slow in reverse. They came out 2-3 times and couldn't figure it out. So I found a factory manual on ebay and decided to have a looksee myself. Turns out that when the seal was leaking, it soaked the upper brake pads. There is an upper pad set, that reminds me sort of like an old tractor clutch disk then a floating rotor then an upper pad set, all in a vertical position. They replaced the lower pad set, but the upper set can only be purchased as part of the new cylinder. I tried soaking them in brake cleaner and sandblasting them to remove the oil, and it worked, but after a day of almost continuous use, the heat caused the oil to seep from deep in the pad, coat the disc and now it's grabbing again. And the pads are a metallic type compound.
I need to clean the pads, but good. Here's what I am thinking about doing, but I will take any ideas that anyone knows to work.
We have a 200 degree ultrasonic cleaner that has a good industrial cleaner (Blue Gold) in it, I am going to run it in there for an hour or so and follow it up by baking them @ around 300 degrees for another hour or two with the pads facing down so the oil will hopefully seep out and drip away.
What do you guys think?
We have an old Schaeff forklift at work and I was sick of paying the local company to come out and not fix the problem.
Original problem was found on a 6 month PM check. The brake cylinder, (which resides on top of each drive motor and is only for the dead-man pedal that stops the truck if the operator lifts his foot) was leaking and a new cylinder was going to be almost $2k, so they managed to find an aftermarket rebuild kit and rebuilt it.
About 5-7 hours of use after they did this, the right brake would grab when going slow in reverse. They came out 2-3 times and couldn't figure it out. So I found a factory manual on ebay and decided to have a looksee myself. Turns out that when the seal was leaking, it soaked the upper brake pads. There is an upper pad set, that reminds me sort of like an old tractor clutch disk then a floating rotor then an upper pad set, all in a vertical position. They replaced the lower pad set, but the upper set can only be purchased as part of the new cylinder. I tried soaking them in brake cleaner and sandblasting them to remove the oil, and it worked, but after a day of almost continuous use, the heat caused the oil to seep from deep in the pad, coat the disc and now it's grabbing again. And the pads are a metallic type compound.
I need to clean the pads, but good. Here's what I am thinking about doing, but I will take any ideas that anyone knows to work.
We have a 200 degree ultrasonic cleaner that has a good industrial cleaner (Blue Gold) in it, I am going to run it in there for an hour or so and follow it up by baking them @ around 300 degrees for another hour or two with the pads facing down so the oil will hopefully seep out and drip away.
What do you guys think?