Large Scale Central

Disassembling A Bachmann Spectrum Archbar Truck with outside brakes

Turn the truck upside down. The brake detail is molded in plastic as a single piece. It is held in place by four pins that extend into holes in the cross member. Using a small screwdriver gently pry one side about half way up to loosen it. The screwdriver is leveraging on top of the other side of the brake detail so it will not come all the way out. Turn the truck around and insert the screwdriver under the other side of the brake detail. This time twist the screwdriver so the flat of the blade lifts the detail up. Do not press lever down as it will just push the first set of pins back into place. The detail should now be loose enough to lift off.

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Flip the truck back over and remove the side frames by unscrewing the four bolts in the top. These can be torqued in pretty hard and will round out if not loosened first.

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Using a small set of needle nose pliers grasp the outside of the screw head and turn it at least one full rotation. Finish with a number 2 Phillips. This may sound big but the large blades will help keep the screw head from stripping.

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With the side frames removed lay them down with the inside facing up.

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Use a small hobby screwdriver to catch the spring at about the 1/3 way from the bottom. Compress the spring toward what would be the top to the frame and gently pull it over the nub in the bottom. Leave it resting on the lip and quickly move the screwdriver to the inside of the spring. Apply gentle pressure and the spring will come out guiding along the shaft of the screwdriver. This is way better than having it shoot across the room or bounce under the work area. But it is your preference.

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With both springs removed bring the top of the mount to the middle of the truck and twist it gently toward the outside of the frame.

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When reassembling the trucks I have found that a drop of Elmer’s White glue is more than adequate to keep the screws tight. It can be removed by soaking the truck in warm water for a few minutes.

Good write up. Did you do the full disassembly for paint? To gauge wheels I have been able to just remove the fasteners on one side frame allowing the wheels to be removed.

Jon it was for painting and weathering.