Multiquip 88021 Hydraulic Motor With Brake (Front Left)

The Multiquip 88021 Hydraulic Motor With Brake (Front Left) is a genuine OEM component designed for RAMMAX walk-behind and ride-on roller models including the RW1404, RW1404MR, RW1403HF, RW1504HF, and P33/24 series. As a factory-sourced part, 88021 delivers the exact hydraulic displacement, brake engagement spec, and mounting configuration required by Multiquip engineering. This unit is position-specific — it is the front left hydraulic drive motor — so confirming correct side and position before ordering is essential. DHS Equipment supplies this part direct from Multiquip to keep your roller operating at full spec.

Key Features

• Genuine OEM Hydraulic Specification — Factory-matched displacement and pressure ratings ensure the motor delivers the correct torque output for the drive circuit on RW and P33/24 series rollers.
• Integrated Brake Function — The built-in brake mechanism provides controlled holding force when the roller is stopped, preventing unintended movement on grade without a separate brake assembly.
• Position-Specific Fitment — Engineered as the front left drive motor; mounts directly to the OEM hydraulic circuit and frame attachment points without adaptation on confirmed fitment models.
• Broad RAMMAX Series Compatibility — Fits RW1404, RW1404MR (S/N 326075 and up), RW1403HF, RW1504HF (up to S/N 1534188), P33/24 HHMR-BD with Blade, and P33/24 FR/FC/FCR configurations.
• Drive Performance Assurance — A worn or failed hydraulic drive motor causes loss of traction, erratic travel speed, or complete loss of propulsion on the affected corner — replacing with a correct OEM unit restores balanced, even drum drive.

The hydraulic drive motor converts pressurized hydraulic fluid from the machine's pump circuit into rotational force that propels the compaction drum. On RAMMAX rollers, each wheel or drum position receives its own dedicated motor, allowing independent speed control and tight-radius maneuvering. The integrated brake holds the drum stationary when hydraulic pressure is released, acting as a parking and safety brake. When this motor fails — through internal seal wear, cavitation damage, or brake pack degradation — the roller loses drive force at that corner, resulting in pulling, uneven compaction passes, or an inability to hold position on sloped surfaces.

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.