Bridgeport 2J Head - How do I Remove this?

[pofo]

Good Day,

How do I remove this front gear? Does the center hub spin off? If so, how do I turn it? The gear and hub want to spin freely. Any tricks to hold it while trying to turn the hub off? What do I use for a tool to grab the hub?

Thank you.

[HelicopterJohn]

Hi,

Are you trying to get the nut off the shaft? If so, you might want to try an impact wrench. Just give it a quick jolt at the low setting on the impact wrench and it should pop it loose. Don't know if you have a right or left hand thread on the nut, so don't over do it and strip the threads on the shaft or nut.

I had the same situation on a Porter Cable router trying to get the adapter off the bottom that holds the collet. One quick jolt and the adapter was in my hand.

Just something you might want to try at your own risk of course.

John

[pofo]

Thanks for that input, but I'm trying to get the lower (front) gear off. I don't know if it is press on or screw on. I'm thinking it is screw on. I'm wondering what people use for a tool and how they hold it to turn it. Your impact wrench idea may be applicable in this case as well, but I want to be sure it is screw on before I attempt anything.

[TarHeelTom]

Originally Posted by pofo Thanks for that input, but I'm trying to get the lower (front) gear off. I don't know if it is press on or screw on. I'm thinking it is screw on. I'm wondering what people use for a tool and how they hold it to turn it. Your impact wrench idea may be applicable in this case as well, but I want to be sure it is screw on before I attempt anything.

Just to clarify. Are you referring to the gear marked 59, or to the other gear?

Tom

[pofo]

The other gear.

[79TigerPilot]

I beileve you take the gear marked 59 off first then flip the assembly over and loosen the bearing retainer nut from the gear you want to remove.

Craig

[machintek]

Remove the aluminum pulley by removing the nut and pull the aluminum pulley off.
Then pull out the HI LOW shift rod, Yes the rod that is almost 8 inches in length. Now you can pull straight up the steel back gear and hub as an assembly. I had to make a special wrench from a tube with teeth to get the nut off the inside of the hub which allows dis assembly and removal of the gear.

George

[pofo]

Thanks George. Removing the High/Low was the trick.

Easy! Removing the Hi/Low and pull up. No need to remove either gear. I guess I should have said my objective was to get the assembly off. I thought for sure I had to remove the bull gear.

I'm trying to sort out an issue with the quill skirt. I may be back with more questions.

[machintek]

To get to the quill skirt I remove the 3 bolts that hold the back gear housing to the quill housing and lift the entire assembly off the quill housing. You now have access to the quill skirt. You may need to remove the swing in quill feed cradle to remove the quill skirt. There is a set screw and locking set screw that holds it in place hidden by the feed per revolution selector cover.

George

[pofo]

Thank you again George. You were way ahead of me. I wish I had checked back here. I spent a lot of time trying to figure out how to get that part out of there. Arggh. All is well now.

[pofo]

I need one last bit of help. How do I get the variable speed spring back on? Reversing the instructions in the user manual for disassembly does not work. I can't get the belt to the high speed position far enough to get the tension of the spring soft enough to get the clip back on. I've tried several things to get the disks together as far as possible and I have tried several things to compress the spring, but it just isn't working.

When taking the spring off, the pulleys are in the highest speed position. With only a little bit of umph, the spring is compressed by hand and the clip comes out. But in the installation, the pulley just doesn't want to go up enough to make the spring pressure soft enough so it can be compressed by hand.

What is the trick?

[machintek]

Next time: turn variable drive to slowest spindle speed. Take 2 screws that hold the bottom back cover and compress the spring keeper to the vadi-disc using these screws.
10-24 for 1.5 hp and 10-32 for 2 HP. Now that spring is compressed, turn vari drive handle to as fast as it will go without turning the spindle on. This frees up the belt so you can remove the motor with the pulleys attached.
If I am called in on someone that has not followed this procedure, I find a socket of the appropriate size such that I can put the stack in a press and still be able to but the screws in and compress the spring. Then install the motor with the discs on the shaft, turn the motor shaft by hand while i turn thr vari speed adjuster untill the discs grap the belt well, then remove the screws.
Even the quill works well as a arbor press to compress the spring.

George