Contitech MS39 RIEMENSCH Screw Set.

Contitech MS39 RIEMENSCH Screw Set

The Contitech MS39 RIEMENSCH Screw Set is a precision‑engineered assembly designed to secure the crankshaft pulley (Riemenscheibe) on a wide range of Volvo engines. This set is the OEM replacement for Continental CTAM’s original bolt assembly, offering identical performance and durability while simplifying maintenance and repair procedures.

Key Features

• M10x15 mm bolts with a thread pitch of 1.5 mm, matching the original engine specifications.
• 304‑grade stainless steel construction ensures corrosion resistance in harsh automotive environments.
• Four fasteners per pulley, arranged in a symmetrical pattern to distribute torque evenly.
• Pre‑torqued washers included to guarantee a consistent preload and eliminate the need for additional tools.
• Compatibility with a broad range of Volvo models, including C30, V50, S60, XC90, and many others listed in the product catalogue.

Engineering Excellence

The MS39 set is engineered to meet or exceed the original equipment manufacturer (OEM) standards. Each bolt undergoes rigorous testing for tensile strength, fatigue resistance, and dimensional accuracy. The result is a fastening solution that maintains the integrity of the crankshaft pulley assembly under high engine loads and vibration.

Installation Guide

1. Remove the existing bolts using a suitable socket or wrench. Ensure that all fasteners are fully disengaged before proceeding.
2. Clean the mounting surface of the crankshaft pulley and engine block to remove any debris or old gasket material.
3. Align the new bolts with the pre‑drilled holes on the pulley. Insert each bolt manually to avoid cross‑threading.
4. Apply the pre‑torqued washers to each bolt head, ensuring a uniform contact surface.
5. Tighten the bolts in a star pattern to evenly distribute torque. Use a calibrated torque wrench set to the manufacturer’s specification (typically 30–35 Nm for M10x15).
6. Verify alignment of the pulley after installation to prevent any imbalance that could lead to vibration.

Maintenance Tips

• Inspect bolts periodically for signs of wear or loosening, especially after engine overhauls.
• Replace any damaged bolts immediately to avoid catastrophic failure of the pulley system.
• Avoid using aftermarket fasteners that do not match the specified thread pitch or material grade.

Compatibility Matrix

The MS39 set is compatible with a wide array of Volvo models. Below is a concise reference for common vehicles:

Why Choose Contitech MS39?

• OEM Quality: Matches Continental CTAM’s original specifications, ensuring reliability.
• Ease of Installation: Pre‑torqued washers and clear torque guidelines reduce labor time.
• Durability: Stainless steel construction resists corrosion and wear over the vehicle’s lifespan.
• Wide Compatibility: Supports numerous Volvo models, making it a versatile choice for mechanics and enthusiasts alike.

Conclusion

The Contitech MS39 RIEMENSCH Screw Set delivers a dependable, factory‑grade solution for securing the crankshaft pulley on Volvo engines. Its precise engineering, robust materials, and comprehensive compatibility make it an essential component for anyone maintaining or restoring a Volvo vehicle. Whether you are performing routine maintenance or undertaking a major engine rebuild, this screw set provides the confidence that your pulley assembly will remain secure and functional for years to come.