1. Introduktion
The Pro-Cut 50-691 4WD Direct FIT Adapter is an essential accessory designed to expand the capabilities of your PRO-CUT on-car brake lathe. This adapter facilitates efficient and precise brake rotor resurfacing for a wide range of 1/2-ton 4WD trucks, directly on the vehicle. It is engineered for professional use in automotive service environments, ensuring compatibility and reliable performance.
This manual provides detailed instructions for the safe and effective use, setup, operation, and maintenance of your Pro-Cut 50-691 adapter.
2. Sikkerhedsoplysninger
Always prioritize safety when working with automotive tools and machinery. Adhere to all workshop safety protocols and wear appropriate personal protective equipment (PPE), including safety glasses and gloves.
- Læs alle instruktioner: Before using the adapter, thoroughly read and understand this manual and your PRO-CUT brake lathe's operating instructions.
- Proper training: Ensure all operators are properly trained in the use of on-car brake lathes and this adapter.
- Køretøjets stabilitet: Always ensure the vehicle is securely lifted and supported on appropriate stands before beginning any work.
- Tool compatibility: Use only with PRO-CUT on-car brake lathes.
- WARNING: DO NOT USE IMPACT TOOLS for installation or removal of the adapter or any associated components. Impact tools can cause damage to the adapter, lathe, or vehicle components, and may lead to injury.
- Inspect equipment: Before each use, inspect the adapter and lathe for any signs of wear, damage, or defects. Do not use damaged equipment.
- Renhed: Hold arbejdsområdet rent og fri for snavs.
3. Produktet er slutview
The Pro-Cut 50-691 adapter is a precision-machined component designed for direct fitment onto various 1/2-ton 4WD truck hubs. Its robust construction ensures stability and accuracy during the rotor resurfacing process.

Figure 1: Pro-Cut 50-691 4WD Direct FIT Adapter. This image displays the top view of the adapter, highlighting the central blue hub labeled '4WD DIRECT FIT ADAPTER 50-691'. The outer ring features various lug patterns and is inscribed with 'PRO-CUT INTERNATIONAL', 'www.procutusa.com', '1-800-543-6618', and a critical safety warning: 'USE NO IMPACT TOOLS'. Markings for 4, 5, and 6 lug patterns are also visible.
Nøglefunktioner:
- Compatible with PRO-CUT on-car brake lathes for 1/2-ton 4WD truck service.
- Accommodates multiple lug patterns: 4 on 5.5", 5 on 135mm, 5 on 5.5", and 6 on 5.5".
- Designed for popular domestic 4WD trucks and off-road vehicles.
- Precision fit minimizes vibration during brake resurfacing.
- Heavy-duty construction for professional shop use.
4. Opsætning og installation
Proper installation of the 50-691 adapter is crucial for accurate and safe brake resurfacing.
- Klargør køretøjet:
- Løft køretøjet sikkert og fastgør det på donkrafte.
- Remove the wheel and tire assembly from the hub requiring service.
- Clean the hub surface thoroughly, removing any rust, dirt, or debris to ensure a flush mounting surface for the adapter.
- Select Correct Lug Pattern:
- Identify the lug pattern of the vehicle's hub (e.g., 4 on 5.5", 5 on 135mm, 5 on 5.5", or 6 on 5.5").
- Align the corresponding holes on the 50-691 adapter with the vehicle's wheel studs.
- Monter adapteren:
- Carefully slide the 50-691 adapter onto the vehicle's wheel studs.
- Secure the adapter using the appropriate lug nuts or mounting hardware provided with your PRO-CUT lathe.
- Håndspænd all lug nuts evenly. DO NOT USE IMPACT TOOLS.
- Torque the lug nuts to the vehicle manufacturer's specifications using a torque wrench. This ensures proper seating and minimizes runout.
- Attach Brake Lathe:
- Mount your PRO-CUT on-car brake lathe to the 50-691 adapter according to the lathe manufacturer's instructions.
- Ensure the lathe is securely fastened and properly aligned.
5. Betjeningsvejledning
Once the 50-691 adapter and brake lathe are securely installed, proceed with rotor resurfacing as follows:
- Indledende inspektion:
- Before starting the lathe, manually rotate the rotor to check for any obstructions or excessive runout.
- Verify that the cutting tools are properly positioned and sharp.
- Resurfacing Process:
- Follow the specific operating procedures for your PRO-CUT on-car brake lathe.
- Adjust cutting depth and feed rate according to the rotor's condition and manufacturer recommendations.
- The precision fit of the 50-691 adapter helps minimize vibration, contributing to a smooth and consistent rotor finish.
- Post-Resurfacing:
- After resurfacing, inspect the rotor for proper finish and ensure it meets specifications.
- Clean the rotor thoroughly to remove any metal shavings or debris before reassembling the brake system.
6. Vedligeholdelse
Regular maintenance ensures the longevity and optimal performance of your Pro-Cut 50-691 adapter.
- Rensning: After each use, clean the adapter to remove brake dust, metal shavings, and grease. Use a non-corrosive cleaner and a clean cloth.
- Inspektion: Periodically inspect the adapter for signs of wear, cracks, deformation, or damage to the lug holes. Replace the adapter if any damage is found.
- Opbevaring: Store the adapter in a clean, dry environment, protected from extreme temperatures and corrosive substances.
- Smøring: No specific lubrication is required for the adapter itself, but ensure all mating surfaces on the lathe and vehicle hub are clean and free of obstructions.
7. Fejlfinding
If you encounter issues while using the 50-691 adapter, consider the following common troubleshooting steps:
- Excessive Vibration or Runout:
- Ensure the vehicle hub and adapter mating surfaces are perfectly clean and free of debris.
- Verify that the adapter is correctly seated and all lug nuts are torqued evenly to specifications.
- Check for any damage to the adapter or the vehicle's wheel studs/hub.
- Confirm the brake lathe is properly mounted and balanced.
- Adapteren passer ikke:
- Double-check the vehicle's lug pattern against the adapter's compatibility (4 on 5.5", 5 on 135mm, 5 on 5.5", 6 on 5.5").
- Ensure no foreign objects are obstructing the fitment.
- Poor Rotor Finish:
- This is often related to lathe setup, cutting tool condition, or incorrect feed/speed settings. Refer to your PRO-CUT lathe manual.
- Ensure the adapter is securely mounted to eliminate any play.
For persistent issues, contact Pro-Cut International technical support.
8. Specifikationer
| Attribut | Detalje |
|---|---|
| Modelnummer | 50-691 |
| Mærke | Pro-Cut |
| Fabrikant | Pro-Cut International |
| Kompatibilitet | PRO-CUT on-car brake lathes |
| Køretøjstype | 1/2-ton 4WD trucks, domestic 4WD trucks, off-road vehicles |
| Lug Patterns Supported | 4 on 5.5", 5 on 135mm, 5 on 5.5", 6 on 5.5" |
| Produktdimensioner | 9 x 9 x 6 tommer |
| Konstruktion | Heavy-duty, precision-machined materials |
9. Garantioplysninger
Warranty coverage for the Pro-Cut 50-691 4WD Direct FIT Adapter is provided by Pro-Cut International. For detailed information regarding warranty terms, conditions, and registration, please refer to the official Pro-Cut International webhjemmeside eller kontakt deres kundeserviceafdeling direkte.
Det anbefales at gemme din købsbevis i tilfælde af garantikrav.
10. Support og kontakt
For technical assistance, product inquiries, or support, please contact Pro-Cut International:
- Telefon: 1-800-543-6618
- Webwebsted: www.procutusa.com
Please have your product model number (50-691) available when contacting support.





