Multiquip EM98122 Jog A and B Switch

The Multiquip EM98122 is a genuine OEM Jog A and B Switch designed for the LS-series hydraulic-driven concrete pumps, including the LS300, LS300G, LS300P, LS400, LS500, LS600, LS600P, LS40D, LS40TD, LS50TD, and LS60TD. As a direct OEM replacement sourced through Multiquip's authorized parts network, the EM98122 delivers the exact electrical characteristics and connector compatibility your machine was built around. Verify your model code against the fitment list before ordering to confirm this is the correct switch for your unit.

Key Features

• Genuine OEM Electrical Spec — Manufactured to the original switching circuit specification, ensuring correct actuation voltage, contact rating, and signal output for the LS-series control system.
• Drop-In Connector Compatibility — Matches the original harness plug and mounting position, so the switch seats and connects without rework to wiring or brackets.
• Broad LS-Series Coverage — Fits LS300, LS300G, LS300P, LS400, LS500, LS600, LS600P, LS40D, LS40TD, LS50TD, and LS60TD hydraulic concrete pump models.
• Correct Jog Function Restored — The Jog A and B Switch governs manual pump-cycle control; a failed switch prevents operators from jogging the piston in either direction, halting concrete placement entirely.
• Electrical Safety Compliance — Using the correct OEM switch maintains the intended circuit protection and prevents unintended pump actuation that could arise from an out-of-spec replacement.

The Jog A and B Switch on an LS-series concrete pump allows the operator to manually step the pumping pistons forward or backward one stroke at a time — a critical function used during startup, priming, blockage clearing, and shutdown. Without a properly functioning jog switch, operators lose directional piston control, which can leave the pump charged with concrete and unable to be safely cleared or restarted. Replacing a faulty EM98122 promptly keeps the hydraulic pump circuit fully operational and protects both the downstream plumbing and the pump cylinders from uncontrolled pressure buildup.

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.