Delta Midi Pulley removal?!?!!

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GouletPens

GouletPens

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I bought the PSI VS motor conversion kit for my Delta midi and it works pretty well. The new motor has a pulley with 3 ranges, but the old delta one has 7, of course. I was hoping that I could pull the old pulley off the delta motor and put it on the shaft to the new PSI motor and give me more flexibility for the ranges. I'm currently using the middle range on the PSI motor, which is somewhere like 1200-2500 rpm. I can work with this range, but I'd really like to sand slower if I can (without having to change belts, since that's kinda the point I bought the VS motor in the first place!!!). I'm thinking if I could use the pulley from the Delta I could have more options for VS ranges.

The problem is, when I tried to get the pulley off the delta motor shaft, the thing would get stuck after about 1/2" of pulling it off. I removed the set screw completely. I tried EVERYTHING, even supporting the pulley, letting the motor hang, and banging the *$%&! out of the shaft to try to knock it out of the pulley. Nothing worked, so I gave up and I'm now using the PSI pulley. I'm dying to know is there a way to get that pulley off the delta midi motor and if so will it fit the PSI motor?
 
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Try a rust dissolving penetrating oil.
I second the puller thing while using an impact wrench. If you use a puller with a regular combination wrench, you have a better chance of bending the pulley, and you don't want that happening. A bent pulley will chew the cr@p out of your belts.
I would check to see if there is another screw hidden somewhere. Manufacturers can be sneakey that way.
If the shaft was oiled, and the liquid part of the oil evaporated, that can cause problems. But I doubt this is the case.
When reassembling, clean every trace of oil off of the shaft, and if you must put something on it, use teflon or graphite, or some other form of drycote. Even beeswax works.
 
It MIGHT be a two-part pully. Are there any threaded holes on the FACE of it? If so, remove the screws from the groove and screw them into the holes in the face, that will force the pully apart and it will come right off.
 
Find a phone number for Delta customer support and check with them.

I second those who suggest a puller. Hope you have not buggered up the end of the shaft by banging on it. That could complicate things for you.

I don't quite understand the desire for a 7 step pulley, anyway. most people go to VS drives to get away from changing belts and you want to introduce "MORE" belt changes?? The speed ranges are going to overlap even on the 3 step pulley so I don't quite understand what there is to gain from using the 7 step pulley?:confused:
 
Randy_ said:
Find a phone number for Delta customer support and check with them.

I second those who suggest a puller. Hope you have not buggered up the end of the shaft by banging on it. That could complicate things for you.

I don't quite understand the desire for a 7 step pulley, anyway. most people go to VS drives to get away from changing belts and you want to introduce "MORE" belt changes?? The speed ranges are going to overlap even on the 3 step pulley so I don't quite understand what there is to gain from using the 7 step pulley?:confused:
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The point of the 7 step pulley is mainly to give me a greater range of speeds. If I'm using a smaller pulley than the VS motor has, then I should be able to go slower. It won't be often but I'd like the option. Also, the size of the new pulley is not exactly the same as the old one. The new pulley has the middle slightly larger than the old one, which makes the belt tighter than it used to be. That means I have to adjust the motor now when I do change belts on the VS motor, which is real annoying.

I'm going to pull the old one out and check about a double set screw tomorrow and get back about it. I think I might post pictures too. More to come on that.
 
OOOOOOkay so I finally got around to pulling the old motor out and there is definitely not a second set screw....I can see straight down through to the shaft through the set screw hole....but for some dag blanged reason it still wouldn't come off. I started to get all into it again but decided to work on reorganizing my shop instead, since that is much more important at this stage. I must say, i'm sufficiently miffed!!!!
 
You may be spinning your wheels anyway. Shouldn't need to remove the pulley to figure out whether it will fit or not. Get out your caliper and measure the shaft diameter of the Delta motor and see if it is the same as the shaft on the PSI motor. That will tell you real quick whether they are interchangeable or not.
 
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