Multiquip 1230978200 Crank Pulley Bolt

The Multiquip 1230978200 Crank Pulley Bolt is a genuine OEM fastener designed for Mayco concrete pump models C30HDNI, C30HDNI Precision, C30HDNI Zenith, and C30HDN. As an authorized Multiquip parts source, DHS Equipment supplies this exact OEM component to ensure your concrete pump stays running to the manufacturer's original specification. This bolt secures the crank pulley assembly on the C30 series cycloidal-drive concrete pumps, making correct fitment and torque retention critical to continued pump operation. Verify your model code against the fitment list before ordering to confirm compatibility.

Key Features

• Genuine OEM Fastener Grade — Manufactured to the exact thread pitch, diameter, and tensile strength specified for the crank pulley application — not a generic hardware substitute.
• Direct-Mount Replacement — Installs into the existing crank pulley mounting position on C30 series concrete pumps with no modification to the surrounding hardware.
• Confirmed C30 Series Fitment — Compatible with C30HDNI, C30HDNI Precision, C30HDNI Zenith, and C30HDN Mayco concrete pump models.
• Maintains Drive System Integrity — A properly torqued crank pulley bolt keeps the pulley locked to the crankshaft, preserving belt tension and cycloidal drive timing across demanding continuous-pour cycles.
• Critical Retention Component — Pulley bolt failure can allow the crank pulley to shift or disengage entirely, causing immediate loss of pump drive function and potential secondary damage to the crankshaft and belt system.

The crank pulley bolt secures the pulley to the crankshaft on the C30 series cycloidal-drive concrete pump, transferring rotational force from the engine to the pump's drive belt system. If this bolt loosens or fails, the crank pulley can move out of alignment or detach, immediately interrupting power delivery to the pump mechanism. Keeping this fastener in serviceable condition and replacing it at the first sign of wear or thread damage is essential to maintaining uninterrupted pump output on the job.

Part Details

Compatibility & Fitment

Verify Before You Order

Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.

Why Buy From DHS Equipment

Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.

Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.