Ronda 6004 Date Wheel

Product Description

This is a genuine Ronda 6004 date wheel, an original Swiss-made calendar component for the Ronda 6004.B quartz movement. The 6004.B features a big double-digit date display (available at 12 o’clock or 6 o’clock positions) and this date wheel is the critical rotating disc that displays the correct date through the dial window . This brand new original part is essential for watchmakers restoring proper date function when the original date wheel becomes worn or damaged.

Key Features & Functions

• Genuine Ronda original spare part
• Designed for Ronda 6004.B quartz movement
• Big double-digit date display (12H or 6H position)
• Essential calendar mechanism component
• Swiss Made quality
• Brand new, factory-fresh condition

Usage Instructions

The Ronda 6004.B features a quickset date function for easy date adjustment .

Date Setting Instructions:

1. Pull the crown to the first stop (date setting position)

2. Turn the crown clockwise to advance the date

3. Continue until the correct date appears

4. Push the crown back to the closed position

Important Usage Tips:

• Avoid setting the date between approximately 8:00 PM and 1:00 AM when the date mechanism is engaged

• The movement features a hacking seconds function – when the crown is pulled to time-setting position, the seconds hand stops for precise synchronization

• The 6004.B also has a power-saving feature – pulling the crown out reduces power consumption by about 70%, making it useful for long-term storage

Installation Instructions

Tools Required:

• Non-metallic tweezers

• Hand removal tools

• Dial protector film

• Movement holder

• Small screwdrivers (for calendar plate removal)

• Rodico cleaning putty

• Loupe or magnification

Step-by-Step Installation:

Step 1: Movement Preparation

• Remove the movement from the watch case

• Remove the hands using hand removal tools (protect the dial with film)

• Remove the dial

• The date wheel is located on the dial side of the movement, under the calendar plate

Step 2: Remove the Old Date Wheel

• Remove the calendar plate screws and carefully lift the calendar plate

• Locate the date wheel on the main plate

• Using non-metallic tweezers, carefully lift the old date wheel off its seat

• Note the orientation for reinstallation – the big date wheels have a specific left/right configuration

Step 3: Inspect and Clean

• Inspect the date driving wheel and date jumper for debris or old grease

• Clean the date seat area with Rodico

• Ensure the date jumper spring provides proper tension

Step 4: Install the New Date Wheel

• Position the new genuine Ronda 6004 date wheel onto the movement

• Ensure the date wheel rotates freely and engages with the date driving wheel

• The date numerals should be upright and properly aligned

• Reinstall the calendar plate and tighten screws evenly

Step 5: Test the Date Mechanism

• Manually advance the time past midnight to verify the date changes correctly

• Test the quick-set function by pulling the crown to the first position

• The date should advance crisply with each turn

Step 6: Reassembly

• Reinstall the dial and hands

• Ensure the date window aligns perfectly with the date wheel

• Test all functions before casing up

Important Notes:

• The Ronda 6004.B uses a big date complication with two separate date wheels (tens and units) that must be properly aligned

• The 6004.B is part of Ronda’s xtratech family and is considered a repairable metal watch movement

• Professional installation is recommended for those without movement service experience

Repair Guide

Common Symptoms of Date Wheel Issues: