ZENITH 420

Exploded diagram

BrandZENITHCaliber420Size13 1/4FunctionSC-CLD-CHRVersionEL PRIMEROHands1.00x1.50Stem5824Stem (subs.)Stem (2 pce)Balance staffBalance staff (subs.)Mainspring (subs.)1.22x12.5x0.146Mainspring (subs.)Battery

Watchparts

Part NocaliberdescriptionoriginalArtno.
100BMain plate jewelled51.52.0974.42099500100420
105BScrew for barrel bridge51.03.0357.42099500105420
116= 400Escape wheel bridge51.12.0021.40099500116400
121/3BBalance bridge51.06.0112.40099500121400
125BPallet bridge51.07.0291.40099500125400
166= 400Casing clamp10.16.0560.40099500166400
180/1BBarrel complete -with mainspring52.63.0300.42099500180420
205= 400Center wheel drilled + cannon99500205400
205BCenter wheel drilled without cannon53.70.0081.40099500206400
210= 400Third wheel53.73.0110.40099500210400
225= 400Second wheel - 5 arms53.74.0110.40099500225400
245= 400Cannon pignon sweep sec.09.72.0081.40099500245400
255= 400Hour wheel sweep sec.09.37.0086.40099500255400
260= 400Minute wheel59.39.0085.40399500260400
401= 400Handsetting stem07.23.0075.4008025824
407= 400Clutch wheel08.24.0070.40099500407400
410= 400Winding pignon07.25.0070.40099500410400
414= 400crown wheel seating12.46.0080.40099500414400
421= 400Crown wheel lower07.47.0085.40099500421400
422= 400Crown wheel ring12.49.0070.40099500422400
423= 400Crown wheel core12.48.0050.40099500423400
425= 400Clicking spring07.52.0060.40099500425400
430= 400Click spring13.53.0070.40099500430400
435= 400Yoke spring08.28.0070.40099500435400
440= 400Yoke spring13.29.0080.40099500435400
443= 400Setting lever assembled58.27.0100.40099500443400
445/1= 400Setting lever spring10.30.0075.40099500445400
450= 400Setting wheel09.41.0080.40099500450400
451= 400Setting wheel for minute wheel09.41.0070.40099500451400
462= 400Minute train bridge10.32.0035.40099500462400
502= 400Stellhebelwelle08.26.0070.40099500502400
705= 400Escape wheel - 21 teeth53.76.0160.40099500705400
710= 400Pallet fork -pinion 1 lower end-piec.= ALTE Ausf.99500711400
710= 400Pallet fork54.79.0090.40099500710400
721= 400Balance cplt. -regulated56.80.0101.40099500721400
771BMainspring AUT sliding attachemnet1.22x​12.5x​0.14699500770420
953/2= 400Extension pusher long48.05.0025.40099500953400
953/4= 400Extension pusher48.05.0015.40099500953400
2552= 400Date finger46.83.0040.40099502552400
2555= 400Calender driving wheel59.64.0020.40099502555400
2556= 400Datumstern- / Datumanzeiger- Mitnehmerrad09.66.0030.40099502556400
2557/1400=ZHD0010date indicatorF4 Silber9950ZHD0010
2557/1400=ZHD0011date indicatorF4 Schwarz9950ZHD0011
2557/1B =ZHD0015date indicatorF3 weiss99502557400
2557/1= 400date indicatorF6 weiss99502557401
2557/1400=ZHD0015date diskF3 weiss9950ZHD0015
2566/1= 400Date indictore driving wheel96.05.0010.40099502556401
2575= 400Date jumper spring13.72.0050.40099502575400
2576= 400Date jumper46.71.0031.40099502576400
2632= 400Date unlocking yoke96.81.0021.40099502632400
2633= 400Date unlocking yoke spring13.82.0125.40099502633400
2765/1= 400Date corrector yoke96.03.0020.40099502765400
5106= 400Screw for barrel bridge11.13.9906.40099505106400
5106= 400Screw for barrel bridge11.13.9906.40099505106400
5121= 400screw for balance cock11.13.9896.40099505121400
5166= 400screw for casing clamp11.27.9966.STAN99505166409
52557= 400screw for date indicator11.13.9856.40099552557400
52566= 400screw for date corrector11.63.9776.40099552566400
52632= 400screw for date unlocking yoke11.13.9866.40099552632400
5423= 400screw for crown wheel core11.33.9986.40099505423400
5425= 400screw for crown wheel core11.11.9966.40099505425400
5435= 400screw for spring yoke10.53.9700.40099505435400
5440= 400screw for yoke spring11.63.9756.40099505440400
5462/1= 400screw for minute train bridge11.43.9996.40099505462401
58080= 400screw for coupling clutch11.63.9806.40099558080400
58140= 400screw for operating lever11.63.9726.40099558140400
58157= 400screw for new guard11.42.9926.40099558157400
58200= 400screw for blocking lever11.63.9816.40099588200400
58270= 400screw for minute recording jumper11.11.9756.40099558270400
58290= 400screw for friction spring11.11.9936.40099558290400
58320= 400screw for clutch spring11.63.9766.40099558320400
58325= 400screw für maintain pin11.63.9736.40099558325400
58335= 400screw for operating lever spring11.13.9886.40099558335400
58350= 400screw for hammer spring11.37.9966.40099558350400
58355= 400screw for pillar wheel jumper11.42.9956.40099558355400
58500= 400Screw for chronograph bridge11.11.9926.40099558500400
58610= 400screw for conveyor11.63.9676.40099558610400
58620= 400screw for hour recorder bridge11.40.9976.STAN99558620400
58680= 400screw for hour hammer11.11.9876.40099558680400
5934= 400screw for extension11.13.9846.40099505934400
8000= 400Chronograph wheel ( 60s)98.10.0013.40099508000400
8020= 400Minute counting wheel (30m)98.11.0012.40099508020400
8060= 400Driving wheel chrono62.13.0015.40399508060400
8070= 400Pillar wheel 2-3 functions48.06.0010.40099508070400
8080BCoubling clutch, mounted, 2 functions68.52.0013.40099508080420
8100= 400Sliding gear (30m), mounted98.71.0012.40399508100400
8140= 400Operating lever chrono, 2 funct.98.30.0020.40099508140400
8157= 400guard25.10.0010.40099508157400
8180= 400Fly-back lever -zero actoon48.48.0020.40099508180400
8200= 400Blocking lever, 2 functions98.49.0030.40099508200400
8220= 400Hammer, mounted, 2 functions98.44.0021.40099508220400
8270= 400Minute counter jumper98.50.0011.40399508270400
8290= 400Chronograph wheel friction13.66.0020.40099508290400
8320= 400Clutch spring, 2 functions13.33.0011.40099508320400
8325= 400Sliding gear spring13.34.0015.40099508325400
8335= 400Operating lever spring48.32.0010.40099508335400
8345= 400blocking lever spring13.35.0020.40099508345400
8350BHammer spring98.46.0010.40099508350400
8355= 400Pillar wheel jumper48.52.0010.40099508355400
8358= 400Pillar wheel jumper sole48.51.0010.40099508358400
8400= 400Eccentric f. pivoting of coupling clutch05.10.0020.40099508400400
8401= 400Banking eccentric f. couplimg clutch05.10.0030.40099508401400
8406= 400Finger-depth eccentric05.10.0040.40099508406400
8500BChronograph bridge51.25.0042.42099508500420
8600= 400Hour counting wheel, mounted62.10.0045.40099508600400
8610= 400Conveyor mounted98.03.0020.40099508610400
8620= 400Hour counting wheel bridge98.54.0025.40099508620400
8640= 400Switch48.53.0020.40099508640400
8640/1= 400Switch10.53.9770.40099508641400
8680= 400Hour hammer48.55.0008.40099508680400
8720= 400Conveyor spring13.37.0031.40099508720400
8730= 400Hour hammer spring63.36.0010.40099508730400
.BDay corrector59.67.0110.4054B
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