Now we’re ready to take the reel bundle out of the machine. The first thing we need to do is cycle the mechanism. You can pull the handle (or screwdriver) down all the way and stop the clock if you want, but it is sometimes easier to pull it down almost all the way and leave the mechanism in a partially-cocked state. We’re just trying to get the reel stop levers to pull away from the star wheels and have the payout fingers pulled away from the discs. Once you do this a couple of times you will get the hang of it. If you have done it correctly the reels will be able to spin freely. At this point we need to loosen the reel shaft retaining screw.


Notice that I said “loosen” and not “remove”. Although you can remove the screw entirely, it’s a bad habit and should be avoided. Screws are easy to misplace, and it will be much easier to reassemble the mechanism later if we keep all the screws in their proper place. In fact, even if you need to remove a screw as part of the disassembly process, it’s a good practice to replace the screw after you’ve removed the related part. Trust me on this one… you will thank me later. After we have the screw loosened, we can unscrew and remove the shaft itself.


You may want to support the reel bundle with your free hand while you are unscrewing the shaft, just to keep it from slipping down as the shaft comes loose from the other side of the mech. After the shaft has been completely unscrewed, grab the end of it and pull. It should slide right out. Here’s what it looks like once it’s been removed.


It isn’t much to look at, and it’s pretty much guaranteed to be covered in oil and dirt. There’s really only one part of the slot machine to which oil or dirt can do permanent and irreversible damage, and that’s the reel strips. If you are trying to save your strips, you need to be extra careful not to get them dirty, so a good hand cleaning may be in order before you go any further. We’re going to be handling the reel tins (the part of the mechanism that holds the reel strips) as we remove the reel bundle, which brings us to another law of slot machine restoration: Reel tins are vampires. They want your blood. If you spend any amount of time working on an antique slot machine, you are going to end up cutting yourself on one of the reel tins. They are made of sheet metal and their edges are very sharp. Blood isn’t any better for reel strips than dirt or oil, so be careful. A Tetanus shot is probably not a bad idea either… I always keep mine current. Anyway, the process of removing the bundle is hard to photograph, so I’m just going to describe it. Essentially, you hold the bundle and lift it pretty much straight up, maneuvering the reel tins around the reel stop levers. Both the reel stop levers and the reel tins have a bit of “play” in them, so it shouldn’t be too hard. Here’s what the reel bundle looks like once it is removed from the mech:


Outside of the mech, it’s easier to see how the bundle functions. Turning the left-most reel causes the right-most reel disc to turn. It seems backwards at first, but it makes sense when you remember where the payout fingers were located. Let’s take a look at it from a couple of other angles.



Here we can see the reel discs and all the various holes they contain. Each hole corresponds to a specific symbol on the corresponding reel strip. Let’s look at it dead on.


Look at the numbers above. They all represent the positions of the payout fingers for a particular spot on the corresponding reel. Since our Mills “21″ Bell has melons, there are six symbols that correspond to potential payoff combinations. In general, the closer you get to the center of the disc, the more valuable the symbols are. On our machine, the numbers above represent the symbols as follows:

1. Cherry
2. Orange
3. Plum
4. Bell
5. Melon
6. Bar

If we look at number 3 above, we see that there is a hole in the disc, meaning that a plum would be in the payout position if the reel stopped with that hole under the payout fingers. In addition to the other symbols listed above, the reels also have lemons, which generally don’t have any associated payoff so they don’t have any holes or a payout finger to detect them. Some Mills slot machines feature “Mystery Payoffs” which really aren’t any mystery at all if you look at the reel discs. Usually a mystery payoff is accomplished by having a hole punched in the orange position when a specific bar or melon is displayed, meaning that normally non-paying combinations like Melon-Orange-Orange or Bar-Orange-Orange would pay off. Likewise, on machines that feature a “Deuces Wild” theme, the reel discs have holes in all the symbol positions whenever a deuce is displayed, making it function as a wild card. If you recall from earlier entries, the “21″ Bell has a special award feature that awards a super-jackpot token when the player hits a 7-7-7 combination. Since the 7s are displayed on top of other symbols on the reels and there is no hole that corresponds to 7s, the token award payout is accomplished through a different means.


In the photo above you can see the special notches cut into the reel discs that correspond to a 7-7-7 combination. If we look at the front disc (which corresponds to left-most reel when looking from the front of the machine) and draw a line from the notch towards the center of the disc we see that no holes are punched for that particular position. This tells us that the 7 on the first reel shares its position with a lemon. Let’s see what the front of the mech looks like now that the reel bundle has been removed.


As you can see, everything is much more accessible now that the reels are out of the way. See if you can spot the kicker that we discussed earlier in the above photo. If not, don’t worry about it… we’ll get to it later. Before we move on, there are a couple of things we should do. First, we should put the reel bundle somewhere safe, particularly if we’re trying to save the reel strips. We’ll disassemble it later on, but we don’t need it now. Next, we should start filling a box with the parts that we’re going to clean and degrease. The reel shaft will be the first part to go into the box. Again, it’s very easy to misplace parts, so a little bit of caution is warranted. Last, it’s probably a good idea to get any remaining coins out of the mechanism. Assuming that the payout slides are working, the easiest way to do this is to cycle the mechanism a few times. Since the reel discs are not in place, there is nothing to stop the payout fingers from traveling all the way forward, making the mechanism think that we have hit every possible payout combination. As far as the machine is concerned, we hit a jackpot every time! After each spin, tip the mechanism up and remove the coins from underneath. It will probably take 7-8 cycles to empty the payout tube on most machines. That about does it for the reel bundle removal. Now the real fun begins.

8 Responses to “Reel bundle removal”

  1. Barry says:

    Hi….Slotter, it’s me again. In backtracking and reviewing this page……I’ve got my reel out of the mech and have cleaned and oiled it. You mention that turning the left most reel will make the right most wheel turn…..However, when I hold the axle near the payout discs…. and spin the left reel, the only thing that turns with the left reel is the axle that I’m holding in my hand. The middle reel and right reel (the one closest to the payoff discs) spin independently.

  2. Slotter says:

    That doesn’t sound right at all. If your reels are not spinning in conjunction with the corresponding payout disks, your machine is never going to payout correctly (if at all.) I haven’t gotten around to photographing the disassembly of the reel bundle yet, but will be doing so in the future.

  3. Barry says:

    Thanks Slotter…….taking apart the reel bundle is pretty straightforward as you well know. This slot is a repro Golden Nugget…..and the guts are no frills but I think everything is there that’s supposed to be. I’ll just keep plugging away and I might stumble upon a fix for my problem(s). Thanks for all you do. Barry

  4. tony says:

    Hi…this is my first attempt at a slot restoration….I’ve done the cabinet clean up…about to start to renew the reel strips….this is probably a dumb question…How do I place the new strips in the exact right position ?…Do I have to mark the reels or maybe just line up the melons with the holes in the payout discs…help please…Tony

  5. Slotter says:

    Well, that depends on your individual setup, but you certainly don’t have to mark the strips. Essentially, you want to get the strips into the reel tins but hold off on crimping the tins so that you can still move the strips around inside of the tins. Once your machine is reassembled, set the reels so that a jackpot condition lines up on the payout disks and let the machine finish its cycle so that the payout fingers engage the disks. Then, move the reel strips in the individual tins until the correct symbols line up on the payout line. When everything looks right, crimp each reel tin in a couple of spots so that the strips are held securely in place. Note that you do NOT have to crimp the tins all of the way around… just a couple of crimps will do the job and make it easier to swap out the reel strips in the future.

    Make sense?

  6. tony says:

    Hi Slotter…yes thats made very clear…thanks a lot for the info….I will be back later for more advice !…..looking forward to you completing the rebuild…….this is an excellent website….Thanks again… Tony

  7. lynn says:

    my slot machine was jambed, which i have fixed but the wheel wont spin when you play. you can here thing spinning but not engaging

  8. Slotter says:

    I’d need some more details in order to make an educated guess. How did you “fix” the jam?

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