First, make sure it has all the parts. Or at least, all the parts you will needto load what you want to load.
Here's a great photo guide to assembly and disassembly:
http://members.fortunecity.com/leepro1000/
I just started reloading and now I discovered I can get Pro-1000's cheap from people who are moving up to Dillons. Get 'em home, clean 'em up, get all the parts in order, and I can sell them for decent cash. Nearly every part in itself is dirt cheap & easy to replace.
Problems I see:
1. Index system out of adjustment- usually a bad plastic hex bushing under the carrier. About $.33 each IIRC.
2. Shellplate Carrier: damaged casting- usually means a new carrier. Lee prices a bare carrier at $22 IIRC but you can often buy a complete setup carrier with a shellpalte of your choice for $40 shipped by shopping around.
a. I see the case feed slide rail gouged or nicked from mishandling or abuse. You can file down small gouges but big ones cause the slider to stick or not go full travel. Epoxy may help for patching but bad enough damage = scrap carrier.
b. Primer punch pocket will crack where the slot is cut for the spring clip for the case-detected primer feed. The bottom of the pocket literally cracks off and is gone. No easy way to fix this; I've tried custom spring clips with limited success. Usually = scrap carrier.
c. Slot for wire "finished shell guide" can get damaged by cases with half-pressed primers failing to eject at the ramp and trying to continue around again, and it pushes the spring guide out of the slot; repeated times will erode the slot so the wire spring can't put any pressure on the finished shell wihtout popping out of the slot. Repair = take a Dremel and deepen the slot to fit the wire spring in better.
d. Ram socket in bottom of carrier boogered up by forcing it on or off the ram. May repair with a file, and if carrier is never needed to be removed, can be epoxy repaired and clamped on. Otherwise = scrap carrier.
3. Primer Feed- plastic chute busted, flip tray busted, wire "vibrator" gets broken or worn out, etc. Solution: Replace with a new Pro-1000 primer feed set for about $10 includes large and small chutes and pins, new flip tray, and a nice case to keep it in.
4. Index transfer rod gets burred or damaged- usually mishandling- replace bar.
5. Turret plate cracked/stripped- replace turret plate.
6. Ram gets primer residue or crud in it and gouges the ram- if it is cosmetic only, no problem, clean it up with brake cleaner, apply a coat of light grease or oil, and run it a few times to distribute. If the ram is still tight you are good to go. IF the ram wobbles, the press base is worn out or the ram is worn out, usually not cost effective to repair = scrap unit and strip parts.