ORIGINAL-ODHNER MODEL 239 ( SN = 239-894044 / 163991 ) ... INSIDE VIEWS / DETAILS ... OF THE R E S T O R E D CALCULATOR |
(12) |
(11) (10) (9) (8) (7) (6) (5) (4) (3) (2) (1) |
R E M A R K S : ==================================================================================== [1st] "How to operate the ORIGINAL-ODHNER-239 ?" See ODHNER MAIN-SITE ... [2nd] "How to START & FINISH Restoration / Maintenance ?" ===>>> Purpose of THIS WORKSHOP ... ==================================================================================== From Berlin FleaMarket " M O S T F U N C T I O N S L O C K E D " = OhOh !!! ************************************************************************************ YELLOW INVENTORY TAG = "Theoretischer Maschinenbau / Technische Universitaet Berlin" May be I have used THIS MACHINE in the TUB-LAB as an Engineer-Student in the 1960s ? OPEN THE ODHNER-239 ... ----------------------- o CLEAR all registers ( if possible - IF NOT, TRY TO CONTINUE ! ) o Flip the calculator upside down. See Pictures (1) & (10): Remove the 2 screws of the CARRIAGE-LIMITER and pull it out. Flip the calculator upside again. See arrow in (10): Press the FRONT-LEVER with the left hand and pull-out the CARRIAGE to the right with the right hand. o Flip the calculator upside down again. Loose the 4 screws in the center of the 4 feet. Lift the BOTTOM-PLATE with feet and screws. Now there is access to the 2x2 screws of the side-plates, 3 screws of the front-unit and 3 screws of the back-unit ... Remove the screws. o Start to remove the LEFT-SIDE-PLATE: Be aware of its 2 clips! o Move the RIGHT-SIDE-PLATE ( has 2 clips too!) to the right. See (2): Unscrew and remove the CRANK-LOCK. Remove the right-side-plate ... o Remove the FRONT-UNIT ( pressing both black keys !) o Flip the calculator upside again. o Remove the 2x2 screws of the TOP-UNIT. o Remove the TOP- and BACK-UNIT. o Remove the CARRIAGE-COVER - but N O T the CARRIAGE-SIDE-PLATES. o Replace the 4 CARRIAGE SCREWS. IN WORST CASE ... [*] ----------------- ... the carriage is not removable, because the input-unit could not be cleared. See (4) ... (7): The BEARINGS OF THE INPUT-UNIT HAVE TO BE REMOVED! Press-down the FRONT-LEVER with a CLIP to have free hands: LIFT-AND-WIGGLE the INPUT-UNIT with the left hand so, that with the right hand the CARRIAGE could be moved STEP- BY-STEP OUT TO THE RIGHT ... Observe (5) the "Reverse-Lock" synchronisation! ASSEMBLING THE ODHNER-239 after CLEANING, R E P A I R & OILING ... ---------------------------------------------------------------------- < S T A R T > o Replace the 4 FEET temporarely to have CEARENCE for TEST-Operation !!! Set INPUT-UNIT to ZERO - Set INPUT-DISPLAY to ZERO. Place INPUT-CYLINDER so, that ZERO-LEVERs on top. Replace RIGHT BEARING temporary. Place the COUNTER-FINGERs as shown in (8a)&(8b). Replace the LEFT BEARING temporary. It should be working: o Cranking the Input-Unit clockwise & counter-clockwise. o The "TOP-FINGER" has to pass the "GAP" in the axle! o The "DOWN-FINGER" has to fit in the SQUARE, when levers are lifted. o The "REVERSE-LOCK" synchronization prevents changing direction in a crank-cycle o Setting INPUT-NUMBERS: Have to show the right DISPLAY-NUMBERS. ... IF NOT ... Continue with < S T A R T > again! < O T H E R W I S E > Continue with the CARRIAGE, see (9): o Try to lift the LEVER ON BACK SIDE by HAND (!) when turning the LONG GEAR: There is a position were it could be lifted - otherwise it is blocked ... !!! MARK [+Limit] & [-Limit] on AXLE (w."TippEx") and SET-IT in CENTER !!! [*] ... DETAIL: When in CLEARING COUNTER-UNIT the LEVER get lifted, it lift with it the LOWER STRUCTURE in (8a) to RESET the COUNTER-DIRECTION-Finger. FINISH THE ODHNER-239 T E M P O R A R Y ... -------------------------------------------- See (10)&(11): Press the FRONT-LEVER with the left hand and "thread-in" the CARRIAGE from the right side. The carriage MAY STOP, touching tooth of LONG-GEAR and LEFT GEAR of the body, see (4). TAKE A NEEDLE and make the long-gears pass! Bring the carriage to the midle. Flip the calculator upside down. Insert the CARRIAGE LIMITER, screw it. Flip the calculator upside again. T E S T I T !!! ... WHEN TESTS SUCCESSFUL: FIX the LEFT & RIGHT BEARINGS. Remove the CARRIAGE LIMITER, REMOVE the CARRIAGE. THE F I N A L ASSEMBLING OF THE ODHNER-239 ... ------------------------------------------------ ... REMOVE the temporary placed 4 FEET ... See (12): PLACE & SCREW all COVER-PIECES in reverse order ... CONTINUE at < O T H E R W I S E > ... until all T E S T S are OK! impressum: ************************************************************************************ © C.HAMANN http://public.BHT-Berlin.de/hamann [*] 06/13/16 |