Quoted from Scribbles:
Ok, here's what I found out on my truck.... First few hundred games or so, the truck worked like a champ. Then slowly it became a bit more difficult to get it to spin. What I discovered was the ball attatched to the truck wasnt always making good contact with the stationary ball. Therefore, no kinetic energy was being transferred to spin the truck, even with a solid hit. Very frustrating. Here's my fix. Remove the truck, easy to do with a set screw from below the playfield. You'll find a couple of metal washers on the shaft that sandwich a nylon washer with tiny ball bearings in it. I used the smallest amount of a good silicone lubricant on those bearings, and on the metal shaft. I actually sprayed the lubricant on a q-tip, then applied to the parts. Reassemble the mechanism, leaving a tiny bit of wiggle in the shaft. The jeep spins like greased lighting now. Zero issues. DONT use wd40, or oil. Use a 100% silicone lubricant. Available at most auto parts stores.
Had the same issue w/ the gradual sluggishness w/ the truck. When the machine was new the truck was fluent w/ movement, but there was a gradual decline within the past month. I also disassembled the truck w/ the set screw & while I was underneath the playfield I cleaned the inside bushing w/ isopropyl alcohol. There was a buildup of grime within the bushing as now it's squeaky clean. This & adding silicone oil to the bearings has rendered the truck swing sensitively responsive w/ perfect play.
My only concern is while underneath the playfield, there were several post that were loose & also the pinball attachment connected to the truck has some wiggle, left to right, etc. I believe this attachment should be secure & flush without movement?001 (resized).JPG