BULOVA - Service Manuals
21 manuals available for download
BULOVA is a prestigious American watchmaker renowned for precision timekeeping and innovative movement technology spanning decades of horological excellence. Our comprehensive catalog of technical documentation includes detailed service manuals, repair guides, and workshop materials for BULOVA's extensive range of mechanical and quartz movements—from classic automatic calibres to advanced Accutron and Accuquartz systems. Whether you need a parts list, troubleshooting guide, or complete owner's manual, our PDF downloads provide watchmakers, technicians, and enthusiasts with the authoritative technical resources required for maintenance, repair, and restoration work on BULOVA timepieces.
Bulova 11 AOAC, AOACD, AOACB Technical Bulletin
Technical bulletin for Bulova 11 AOAC, 11 AOACD, and 11 AOACB automatic watch movements. Provides detailed specifications for these lever escapement movements with 17 or 23 jewels, 42-hour power reserve, and optional date or day-date calendar complications. Includes technical characteristics, automatic winding mechanism description, selected disassembly guidance for key components such as the oscillating weight, mainspring barrel, and escapement cleaning. Features specifications table with movement calibers and corresponding heights. Essential reference documentation for watchmakers and technicians servicing these classic Bulova automatic movements.
Bulova 11BSACB Automatic Watch Technical Bulletin
Technical bulletin for the Bulova 11BSACB automatic watch with sweep second, instant change date and day. Covers specifications, crown positions, and detailed assembly instructions for the basic setting mechanism, train wheels, and automatic winding device. Includes comprehensive exploded-view diagrams with numbered parts reference for technician guidance.
Bulova 12 EBA Series Self-Winding Watch Movement Technical Data
Technical data bulletin for Bulova 12 EBA series self-winding watch movements, covering variants 12 EBA, 12 EBAD, 12 ECAD, 12 EBAC, 12 EBACD, and 12 ECAD. Includes movement specifications with diameter of plate (28.10 mm), total movement heights for each variant (2.85-3.60 mm), balance specifications (Beryllium balance, 19,800 bph), and lever escapement details. Provides technical guidance on the self-winding mechanism with oscillating weight assembly, checking automatic gear engagement, dial removal procedures, mainspring handling, cleaning and lubricating escape and balance components, barrel maintenance, and dial side reassembly with oiling instructions. Contains detailed illustrated diagrams of movement components and sub-assemblies for reference.
Bulova 12EBA, 12EBAC, 12EBACD, 12ECAD Movement Parts List
Bulova 12EBA, 12EBAC, 12EBACD, 12ECAD movement parts list and repair reference guide. This service manual provides exploded views of each watch movement from two different angles, enabling technicians and hobbyists to identify and locate individual components for maintenance, troubleshooting, or restoration work. Every part is numbered and cross-referenced for accurate ordering and assembly. Essential reference material for anyone servicing these specific Bulova movements.
Bulova 1453.10 Caravelle 1453.50 Technical Bulletin
Technical bulletin for Bulova Model 1453.10 and Caravelle Model 1453.50 automatic watches. This service manual provides practical bench tips for disassembly, including stem removal and mainspring release procedures essential for competent repair work. Detailed assembly diagrams cover both train side and dial side, with all parts listed in logical assembly sequence for efficient reference during rebuild. Technical specifications include 11.5 ligne movement size, 17 jewels, lever escapement, and 21,600 BPH beat rate. The lubrication guide specifies fine oil for most components, pressure-resistant oil for critical bearing surfaces, general-purpose grease, and special OL206 grease for specific applications—following these guidelines ensures proper long-term performance. Balance regulator adjustment instructions enable precision regulation of timekeeping. A complete parts list with ISO basic numbers and full descriptions makes ordering and identification straightforward. An essential workshop manual for technicians maintaining or repairing these models.
Bulova 7 BCAC Automatic Watch Technical Bulletin
Bulova 7 BCAC automatic watch movement technical bulletin for professional watchmakers and repair technicians. Covers the complete caliber 7 BCAC automatic mechanism with center sweep second hand, including detailed specifications, mechanical characteristics, and adjustment procedures. Details special points on automatic mechanism construction, center pipe assembly alignment, cannon pinion adjustment techniques, and oscillating weight endshake setup. Provides technical information supported by technical drawings and component references for accurate identification and servicing of this precision automatic timepiece movement.
Bulova Accuquartz Series 224 Technical Bulletin
Technical bulletin for the Bulova Accuquartz Series 224 quartz watch movement. Provides movement specifications including quartz frequency of 32,768 Hz, 15 jewels, and dimensions of 25.75mm x 4.4mm. Details phasing procedures using I.C. Phasing Attachment with meter connection instructions, regulator adjustment procedures for tuning fork balancers, and current drain testing methodology. Includes detailed specifications for models 2240-2242 with various display options and guidance for technicians performing service on this movement.
Bulova Accutron Quartz Series 242 Service Manual for Stepping Motor Quartz
Service manual for the Bulova Accutron Quartz Series 242 stepping motor movement. Contains technical data, electronic function principles, ACCUSET operation, tools and equipment requirements, crown positions, power cell specifications, frequency checking and adjustment procedures, setting instructions, servicing procedures including cleaning and lubrication, electrical check points, component removal and testing, troubleshooting procedures, and illustrated parts lists for models 2421.10, 2422.10, 2423.10, and 2426.10.
Bulova Accutron Quartz Series 250 Technical Bulletin
Bulova Accutron Quartz Series 250 technical service bulletin for the electronic watch movement. This workshop manual covers movement characteristics, power cell replacement procedures, frequency verification and fine adjustment, complete service protocols, proper component handling techniques, lubrication specifications at critical points, and essential test procedures. Features detailed exploded-view diagrams showing both the dial-side and circuit-side assemblies with numbered component identification and step-by-step reassembly sequences. An essential repair reference for qualified watchmakers maintaining and servicing this quartz movement.
Bulova Accutron Quartz SMQ Caliber 2562.10 Technical Bulletin
Technical service bulletin for the Bulova Accutron Quartz SMQ Caliber 2562.10 electronic watch movement — essential reference material for watchmakers and technicians servicing this precision quartz caliber. Details the 32,768 Hz quartz frequency regulation system and the bipolar stepping motor design that advances the display two steps per revolution. Explains the integrated circuit architecture and the one-impulse-per-second electronic timing cycle that governs accuracy to ±0.17 seconds per day. Covers power management, including the power disconnect system that extends battery life and the silver oxide 1.55V battery specification (Bulova 317 type). Movement dimensions are 25.60 × 3.35 mm with ligne size 11½, displaying hours, minutes, seconds, and date. Provides step-by-step battery replacement procedures and detailed crown position operation: Position 1 for normal running, Position 2 for instant calendar adjustment, and Position 3 to engage the power disconnect function. Includes frequency adjustment methodology, complete electronic function explanation, and full instructions for connecting the Bulova Service Meter #700 with required test accessories to verify movement performance. Indispensable workshop reference for maintenance, repair, and calibration work on this Accutron Quartz model.
Bulova Accutron Quartz SMQ Series 245 & 246 Technical Bulletin
Technical bulletin for Bulova Accutron Quartz Series 245 and 246 electronic watch movements. Contains detailed specifications including quartz frequency (32,768 Hz), electronic circuit details with C-MOS integrated circuit, stepping motor specifications, and power cell information. Covers basic electronic function of the Accutron Quartz Series 245, ACCUSET operation and correction procedures, crown positions for normal running, instant calendar setting, and disconnect position. Includes power cell replacement instructions and detailed specifications table for calibers 2451.10, 2452.10, 2453.10, 2461.10, and 2462.10, with dimensions (height, diameter), ligne values, and display functions.
Bulova Accutron Quartz SMQ Series 247 Technical Bulletin
Technical bulletin for the Bulova Accutron Quartz SMQ Series 247 electronic watch movement. This document provides technical specifications and service guidance including movement specifications (32,768 Hz quartz frequency, 3 jewels, 15.30 x 18.10 mm dimensions), power cell replacement procedures, frequency verification and adjustment methods, maintenance and cleaning recommendations, lubrication point identification, coil winding integrity checks, and setting procedures. Essential reference for watchmakers and service technicians working with this quartz movement.
Bulova Accutron Quartz SMQ Series 262/263 Technical Bulletin
Technical service bulletin for the Bulova Accutron Quartz SMQ caliber 262/263 quartz movements. This workshop manual covers essential specifications—32,768 Hz quartz frequency and 1.55V silver oxide cells—along with practical servicing guidance for routine maintenance and precision adjustment. The repair guide details meter reading procedures for pulse checks, low amplitude verification, and microampere testing to assess movement performance. Complete ISO parts diagram with exploded views of the caliber 262 movement and a comprehensive parts list for the series 263, including exact lubrication specifications. Presented across 2 pages with technical drawings and component diagrams to guide technicians through diagnostics and assembly. Essential reference for authorized service centers and experienced watchmakers maintaining Bulova quartz timepieces.
Bulova Accutron Quartz SMQ Series 280 Technical Bulletin
Technical data sheet for Bulova Accutron Quartz SMQ Series 280 movements. Provides dial and train bridge side photography with caliber 605 specifications and key technical characteristics including seven jewels and 11½ ligne sizing. Includes comprehensive parts interchangeability reference for Series 280 in comparison with Series 262/263 models, identifying components with variations. Features important servicing notes regarding cannon pinion removal procedures to prevent component damage. Essential technical reference for authorized service centers and professional watchmakers working on Bulova quartz calibers.
Bulova Accutron Series 221 Technical Letter No. 21 - Replacing the Stem
Technical Letter No. 21 from November 1974 providing detailed instructions for replacing the stem (Part #176) on Bulova Accutron Series 221 watches. Includes step-by-step procedures for stem removal and installation, crown replacement, and guidance on using proper tools and techniques. Features technical diagrams of the movement and setting lever mechanism, with important notes on correct reassembly to ensure proper electrical function and prevention of internal damage. Original factory service documentation used by authorized Bulova service technicians.
Bulova Automatic Chronograph Calibre 14 EFAD Service Manual
Complete service manual for the Bulova automatic chronograph movement calibre 14 EFAD. This workshop manual provides illustrated parts lists in English, French, Spanish, German, and Italian alongside full technical specifications, detailed disassembly and reassembly procedures, and lubrication guidelines specific to this movement. Covers chronograph mechanism adjustment, calendar mechanism operation, and includes a comprehensive diagnostic chart for troubleshooting. Features exploded views of the complete movement and mounted chronograph plate with detailed parts numbering to support both routine maintenance and complex repairs.
Bulova Calibers 11ANAC, 11ANACB, 11ANACD Technical Bulletin
Technical bulletin covering Bulova automatic watch movements calibers 11ANAC, 11ANACB (day-date) and 11ANACD (calendar). This service manual includes detailed movement specifications, step-by-step disassembly and reassembly procedures, comprehensive automatic mechanism description, lubrication guidelines, day-date mechanism operation and adjustment, and a complete illustrated parts index. Movement specs: 11.5 ligne, lever escapement, 42-hour power reserve, 21,600 bph. Essential reference for watchmakers and technicians servicing these movements.
Bulova Caravelle 1133.10 1133.50 Technical Bulletin
Technical data bulletin for Bulova model 1133.10 and Caravelle model 1133.50 automatic watches with day-date display and sweep second hand. Includes complete specifications for the 11½ ligne 17 jewel movement with 25.60mm plate diameter, 21,600 beats per hour, and 52-hour power reserve. Features comprehensive parts diagram with ISO component numbering for all movement assemblies, calendar mechanism variations, and detailed component identification. Essential reference documentation for watchmakers and service technicians.
Bulova Caravelle Model 7 OT Transistorized Watch Technical Bulletin
Technical bulletin for the Bulova Caravelle Model 7 OT transistorized watch. Covers specifications including 7¾ ligne round caliber, 21,600 beats per hour, transistorized circuit with crown-controlled shutoff switch, and amplitude regulator. Includes power cell replacement procedures, cleaning and maintenance protocols, lubrication specifications, and disassembly instructions for uncasing and electrical system component removal including circuit and coil assembly.
Bulova Technical Letter #48R - Power Cell Listing by Model (October 1980)
Bulova Technical Letter #48R from October 1980 providing a comprehensive cross-reference listing of power cell numbers and their compatibility with Bulova and Caravelle watch models. The document organizes power cells (models 214–608) by Bulova model series, gender category (Men's/Ladies'), cell type (Accutron Analog, Bulova LED, Bulova LCD), and required quantity per watch. Includes special notes on power cell equivalencies and Caravelle power cell variants for watch technicians and service professionals.
General Service Manual for Analog Quartz (SMQ) Watches
Comprehensive service manual for Bulova Stepping Motor Quartz (SMQ) analog watches, covering Accutron, Bulova, Caravelle and Quartz models. This repair guide establishes the foundation of SMQ movement theory and explains how stepping motor quartz technology relates to mechanical watchmaking. You'll find detailed test procedures using the Bulova No. 700 meter, complete technical specifications, and step-by-step setting instructions for both 2 and 3 position stem watches. The manual includes practical cleaning and lubrication protocols, frequency adjustment methods, and techniques for hand removal and dial work. Troubleshooting flowcharts walk you through power cell verification, frequency checking, electronic circuit testing, coil winding analysis and current measurement—essential for diagnosing common quartz movement faults. Special coverage of the Accuset automatic second hand correction function includes both setting and checking procedures to restore accurate timekeeping. A genuine workshop reference for technicians maintaining and repairing Bulova quartz watches.