Up one level Neidrauer Adventures Photo Album and Blog » The Rahn-Larmon Lathe » Teardown and Cleaning
Teardown and Cleaning
The Teardown and cleaning process, along with discoveries under the dirt, grease, grime and sawdust. Most of the pictures are to help me remember how to put it back together!

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5-Nov-06 Here is the Lathe Bed resting on cribbing, nothing else to take off or apart. Time to move it downstairs I guess! The headstock assembly weighs in at a mere 175 lbs. After re-assembly with the pulleys and backgear, it will top 300 lbs. 5-Nov-06 The weight scale tells the story: with legs, one-half of the lathe bed weighs 500 lbs, for a total of 1000lbs. The cross-slide power feed gear, numbered 1. 29-Oct-06 The carriage bed bottom. Dirty, with plugged oil holes, but overall okay. 29-Oct-06 The bottom of the carriage, front view with the cross-slide power feed engage. 29-Oct-06 The cross-slide screw, removed. 20-Oct-06 The cross-slide mounting hole in the carriage, numbered 29-Oct-06 The oil hole and spring-loaded detent for the cross-slide power feed engage at the top, at the bottom next to the slide-ways, 28-Oct-06 The back of the carriage apron, cleaned up. The broken half-nut bracket is very visible on the left. Bottom right is a machined surface for a missing and currently, mystery part. 28-Oct-06 One the left and right, holes 28-Oct-06 the Apron during disassembly. 28-Oct-06 The planetary gear # 28-Oct-06 The feed screw reversing mechanism. 28-Oct-06 The feed screw reversing mechanism 28-Oct-06 Driving the taper pin out of the feed screw keeper nut. Gear 28-Oct-06 Feed screw drive assembly 28-Oct-06 The very dirty half-nut assembly. 28-Oct-06 the back of the half-nut with the broken mounting tab next to the substitute angle-bracket repair. 28-Oct-06 One never knows surprises await in an old machine until you check everything out--like this broken bracket. 28-Oct-06 The left-neutral-right engage lever. 28-Oct-06 The direction lever shaft and locating key after removal. 28-Oct-06 The back of the carriage apron (upside-down) 28-Oct-06 Carriage lock 28-Oct-06 One very dirty mechanism 28-Oct-06 Half-nut view of the very dirty carriage assembly 13-Oct-06 Lathe bed with headstock removed. 13-Oct-06 Lathe bed with headstock removed. The clean (shiny) spots on the ways are original metal, exposed for the first time and decades. Pulling the headstock casting from the bed. 13-Oct-06 The headstock with the brasses and pulley removed. Cracks in the headstock pulley shaft; a gear labeled The bull gear backside and brass spacer. Inside the cast-iron headstock cone pulley casting. Check out the counter-weights! Pulling the headstock shaft and bull gear off the cast cone pulleys. Faces headstock spacer - faces headstock spacer, faces 13-Oct-06 Don't mix this up - the order of the headstock spacers. pulling the headstock cones off the headstock. 13-Oct-06 The main spindle bearing and shaft after removing the top bearing block. The scoring on the shaft, according the previous owner, happend when swarf (chips) got down in the oil hole and onto the shaft. 12-Oct-06 The Backgear is removed. 12-Oct-06 The feedscrew pulley, on top of it's shaft. The feedscrew pulley and gear. Removing the bolt allows the gear to slide to the left towards the pulleys and either engage or disengage from the gear train. 12-Oct-06 Shims! Paper shims actually. I'd beter not mix these up. 12-Oct-06 All in all, the brasses look good. The oil groove looks hand-carved (not machined). 12-Oct-06 Removing the rear thrust collar off the spindle. It's a shame those setscrews mark the threads. 12-Oct-06 The main change-gear, measuring over 18 The bolt, bearing, thrust washer, washer and nut from the main change gear. I feel eyes and a snort of hot air upon my head. Looking up it's !Yikes! Max getting in my face. 12-Oct-06 The feedscrew clutch assembly. The spring is housed inside the middle piece, around the feedscrew shaft. Imaging my shock when upon loosening the set screw the assembly jumped apart with a loud POP!. The neat thing about this assembly is when the feedscrew stop (right-most piece) is engaged by the apron of the carriage, it moved the whole feedscrew to the left, disengaging the gear from the shaft, effectively putting the feedscrew in 'neutral'. Releasing the carriage pressure allows the feedscrew to slide back into place (thanks to the spring) and re-engage the clutches. 12-Oct-06 Removing the headstock pulley assembly. The 20-tooth spline gear under the 48-tooth headstock gear.
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