Introduction
This service manual provides detailed instructions and technical information for the maintenance, repair, and identification of various Hermle clock movements. It is intended for technicians and enthusiasts performing service work on Hermle timepieces.
Image: Copyright Page. This image displays the copyright information for "The Hermle Service Manual," including the author Roy A. Hovey, the first edition, third printing date of June 10, 1997, and copyright holders Franz Hermle & Sohn and Hermle Black Forest Clocks.
The manual was compiled and edited by Roy A. Hovey, with the first edition's third printing dated June 10, 1997. Copyrights are held by Franz Hermle & Sohn of Gosheim, Germany, and Hermle Black Forest Clocks of Amherst, Virginia.
Chapter V: Obtaining Parts for Hermle Movements
This chapter details the process of acquiring replacement parts for Hermle clock movements, ensuring proper functionality and authenticity.
Part A: Using The Spare Parts List
Guidance on effectively utilizing the provided spare parts list to identify and order correct components for specific Hermle movements.
Part B: Information On Hermle Movement Plates
Details regarding the various types and specifications of Hermle movement plates, crucial for proper identification and compatibility when sourcing parts.
Chapter VI: Technical Information
This section provides essential technical data and specifications for various aspects of Hermle clock movements, aiding in accurate diagnosis and repair.
Part A: Floor Clock Weights
- Section 1: Placing Weights In Their Correct Position - Instructions for correctly positioning weights in floor clocks to ensure proper operation.
- Section 2: Weight Drive And Selector Settings - Information on the weight drive mechanisms and settings for different clock models.
- Section 3: Weight Fall Data - Data related to the fall distance and timing of weights in floor clocks.
Part B: Wheels, Pinions and Timekeeping
Technical details concerning the wheels, pinions, and overall timekeeping mechanisms within Hermle movements.
Part C: Mainspring Technical Data
- Section 1: The Hermle Mainspring System - An overview of the mainspring systems used in Hermle movements.
- Section 2: Reference Table For Mainspring Sizes - A comprehensive table listing various mainspring sizes and their applications.
- Section 3: Table Of Hermle Mainspring Applications - Specific applications for different mainspring types across Hermle movements.
Chapter VII: Specialized Work on Hermle Movements
This chapter covers advanced repair techniques and specialized procedures required for restoring Hermle clock movements.
Part A: Bushing Hermle Movements
Instructions and techniques for bushing worn pivot holes in Hermle movements to restore proper gear train function.
Part B: Repivoting Hermle Movements
Detailed guidance on the process of repivoting damaged or worn pivots in Hermle movements.
Chapter VIII: Hermle Movements, Their Identification and Characteristics
This section assists in identifying various Hermle movements and understanding their unique characteristics and specifications.
Part A: Quick Reference Tables
- Section 1: Wall, Bracket and Mantle Clock Movements - Reference tables for identifying movements found in wall, bracket, and mantle clocks.
- Section 2: Floor Clock Movements - Reference tables for identifying movements specific to floor clocks.
Part B: Hermle Mechanical Movement Models
- Section 1: Identifying Unknown Hermle Movement Models - Methods and clues for identifying Hermle mechanical movements without clear markings.
- Section 2: Mechanical Movement Descriptions and Specifications - Detailed descriptions and technical specifications for various Hermle mechanical movements.
Part C: Hermle Quartz Movements
- Section 1: Quartz Movements - Overview and characteristics of Hermle quartz movements.
- Section 2: Hermle Quartz Insert Units - Information on Hermle quartz insert units, their types, and applications.
- Section 3: Hermle Quartz Movement Fittings - Details on the fittings and mounting hardware for Hermle quartz movements.
- Section 4: Servicing Electronic Anniversary Clocks - Specific instructions for servicing electronic anniversary clock movements.
Chapter IX: Service Information
This chapter provides practical guidance for performing service work, including in-home repairs and movement installation.
Part A: Service Work In The Customer's Home
Guidelines and considerations for performing service and repair work on Hermle clocks at a customer's location.
Part B: Installation Of Movements In The Case
Instructions for correctly installing Hermle movements into their respective clock cases.
Part C: Trouble Shooting
A guide to diagnosing and resolving common issues encountered with Hermle clock movements.
Setup (for Service Technicians)
This section outlines the initial steps and preparations required before commencing service or repair work on Hermle movements. It includes setting up a workspace, gathering necessary tools, and initial assessment procedures. Refer to Chapter VI for specific weight and mainspring settings, and Chapter IX, Part B for movement installation.
Operating (Post-Service Testing)
After servicing, proper testing is crucial. This section describes procedures for operating the movement to verify correct function, timekeeping accuracy, and chime sequences. Ensure all components are securely fastened and lubricated according to specifications before testing. Refer to Chapter VI, Part B for timekeeping principles.
Maintenance Procedures
Regular maintenance is vital for the longevity and accuracy of Hermle movements. This section details routine cleaning, lubrication, and inspection procedures. For specialized repairs like bushing and repivoting, refer to Chapter VII. Always use appropriate tools and lubricants specified for clock movements.
Troubleshooting Common Issues
This section provides a systematic approach to diagnosing and resolving common problems encountered with Hermle clock movements. It covers issues such as irregular timekeeping, chime malfunctions, and power reserve problems. For detailed troubleshooting steps, refer to Chapter IX, Part C.
Specifications
Detailed technical specifications for various Hermle mechanical and quartz movements are provided to assist in identification and repair. This includes dimensions, gear counts, mainspring data, and other critical parameters. Refer to Chapter VIII for comprehensive movement identification and characteristics, and Chapter VI for specific technical data on weights and mainsprings.
Warranty and Support
For information regarding warranty coverage for Hermle movements or components, please consult the original purchase documentation or contact an authorized Hermle service center. Technical support and additional resources may be available through official Hermle distributors or their designated service partners.
Index
The original manual includes an index for quick reference to specific topics. Users are encouraged to utilize the search function within this digital document for similar navigation.
Image: Table of Contents. This image shows the detailed table of contents for "The Hermle Service Manual," outlining chapters on obtaining parts, technical information, specialized work, movement identification, and service information.