Pages 39 to 47 of the 3636_Bulova Part Number catalog continue listing essential mechanical watch components, focusing heavily on balance assemblies, shock protection systems, and miscellaneous internal parts used in a wide range of Bulova calibers.

Highlights of Content (Pages 39–47)

1. Balance Wheels and Complete Assemblies

• These pages catalog complete balance assemblies for a variety of Bulova movements.

• Listings include:

  • Part numbers for balances with and without hairsprings

  • Notes on variations based on beat rate (BPH) and jewel count

  • Adjusted vs. unadjusted balances for chronometers or premium models

This section is especially important for restoring timekeeping accuracy in older Bulova models.

2. Balance Staves and Hairsprings

• Balance staffs are individually listed for specific calibers, with dimensions and staff types (e.g., double-shoulder, single-shoulder).

• Hairspring types are matched to frequency and overcoil style.

• Entries often note compatibility with Incabloc or Kif shock systems.

Technicians can use this data to replace broken or bent balance pivots with precision.

3. Shock Systems and Jeweling

• Bulova employed various shock protection systems (like Kif, Diashock, and Incabloc) in different models.

• Parts listed include:

  • Endstones

  • Cap jewels

  • Shock spring clips

Each entry cross-references the compatible caliber and part number needed for proper restoration of the anti-shock feature.

4. Miscellaneous Parts

Other parts featured in this section:

• Minute wheels and motion works

• Cannon pinions and setting mechanisms

• Stem sleeves, crown tubes, and clutch levers

This portion is useful when addressing time-setting problems or restoring case integrity.

Practical Applications

These pages allow watchmakers to:

• Match components to obscure or legacy Bulova calibers

• Source precise replacements without guesswork

• Maintain watch originality by referencing exact factory part numbers

Summary

Pages 39–47 of the 3636 Bulova catalog are a rich technical index for balance-related components and rare internal parts. They form the backbone for repairs involving oscillation systems, shock absorbers, and wear-prone parts often missing or damaged in vintage models.