Seiko 4F56A, 8F56A - AWCI

PARTS CATALOGUE / TECHNICAL GUIDECal. 4F56A, 8F56A[SPECIFICATIONS]ItemCal. No.4F56A8F56AMovementThe illustrations refer to Cal. 8F56A.(x 1.0)MovementsizeOutside diameterCasing diameterIncluding theHeight (battery portion)ø18.5 mm17.7 mm x 18.5 mmø18.5 mm17.1 mm x 18.5 mm4.8 mm 4.8 mmø26.4 mm25.6 mm x 25.6 mmø26.4 mm24.8 mm x 24.8 mmTime indicationDriving systemAdditional mechanismLoss/gainRegulation systemMeasuring gate by quartz testerHour, minute, second and 24-hour hands• Step motor (for hour, minute, second and 24-hour hands)(Load compensated driving pulse type)• Ultrasonic motor (for calendar indication)• Calendar (Leap year indication, month and date)Perpetual calendar up to February 28, 2100• Train wheel setting device• Electronic circuit reset switch• Battery life indicator• Independent adjustment of hour hand• 24-hour handAnnual rate at normal temperature range: less than 20 secondsLogical regulation (Pattern cutting system: 3 steps)Use 10-second gate.BatteryBattery No. Sony CR1612, Matsushita CR1612 Matsushita CR2412VoltageBattery life3.0 VApprox. 5 yearsApprox. 10 yearsJewels4 jewels1

PARTS CATALOGUECal. 4F56A, 8F56ADisassembling procedures Figs. : 1 → 47Reassembling procedures Figs. : 47 ← 1Lubricating: Types of oil Oil quantityMoebius ANormal quantityMoebius FEx. : Cal. 8F56A1 Battery(See the front page)2 4216 115 (Cal. 4F56A)4216 117 (Cal. 8F56A)Insulator for battery (A)3 0016 704Circuit block cover screw4 4461 034 (Cal. 4F56A)4461 026 (Cal. 8F56A)Circuit block cover5 4003 218 (Cal. 4F56A)4003 219 (Cal. 8F56A)Circuit block6 4281 115Date driving contact point spring7 4281 11924-hour contact point spring8 4270 415Battery connection (–)9 4216 116Insulator for battery (B)10 4002 115Coil block2

PARTS CATALOGUECal. 4F56A, 8F56A11 Holding ring for dial12 0808 127Date dial guard13 0273 11324-hour wheel14 0491 016Dial washer15 Date dial**16 0273 114Hour wheel17 0817 117Intermediate 24-hour wheel and pinion18 0168 014Third intermediate wheel for hour corrector19 0012 354Screw for date jumper** Type of date dialCal. 4F56: 0878 320 Black figures onwhite background0878 321 White figures onblack backgroundCal. 8F56: 0878 356 Black figures onwhite background0878 357 White figures onblack background20 0810 116Date jumper21 0195 014Calendar plate22 0168 013Second intermediate wheel for hour corrector23 0817 118Intermediate date driving wheel and pinion24 4247 018Bush for second intermediate wheelfor hour corrector guide25 4062 117Ultrasonic motor26 1019 11424-hour wheel and arbor27 0802 116Date driving wheel3

PARTS CATALOGUECal. 4F56A, 8F56A28 0016 704Train wheel bridge screw29 0125 254Train wheel bridge30 0241 167Fourth wheel and pinion31 0231 116Third wheel and pinion32 0701 115Fifth wheel and pinion33 4146 116Step rotor34 0281 115Setting wheel35 0388 116Yoke guard36 0391 115Train wheel setting lever37 4239 115Rotor stator38 0261 115Minute wheel and pinion39 0383 115 (Cal. 4F56)0383 116 (Cal. 8F56)Setting lever40 0384 116Yoke41 Winding stem42 0282 117Clutch wheel43 0168 011First intermediate wheelfor hour corrector44 0221 122Center wheel and pinion45 0016 705Ultrasonic stator unit screw46 4234 115Ultrasonic stator unit47 0100 148 (Cal. 4F56)0100 138 (Cal. 8F56)Main plate4