Service Manual For Bomag Bmp851 -

The BOMAG BMP 851 is a compact, double-drum vibratory roller designed for asphalt and soil compaction in confined areas. Its hydrostatic drive system, dual-frequency vibration, and articulated steering require specialized service procedures. This manual provides step-by-step instructions for maintenance, diagnostics, and repair.

Machine Identification

If you own or operate a Bomag BMP 851, you already know one thing: this isn’t your average compactor. Known affectionately as the "baby roller" due to its narrow frame and impressive drum offset, the BMP 851 is the king of trench compaction. service manual for bomag bmp851

But with its advanced hydraulic systems and specialized articulation, maintaining this machine requires more than just a grease gun and a prayer. It requires the Bomag BMP 851 Service Manual.

In this post, we’re discussing why this specific manual is non-negotiable for your workshop, what you can expect to find inside, and the common maintenance pitfalls it helps you avoid. The BOMAG BMP 851 is a compact, double-drum

This is where the service manual pays for itself. The BMP851 uses two eccentric weights that rotate freely. The manual provides:

Voltage: 12V DC negative ground. Main components: starter motor (1.4 kW), alternator (35A), control box with vibration switch, hour meter, safety interlock (seat switch if ride-on conversion – not standard on walk-behind). Hour meter not working : Usually wired to

Wiring diagnostics:

  • Hour meter not working: Usually wired to alternator W terminal (AC frequency). Test with multimeter – should show ~6V AC at idle.

    • Fuse assignments (typical):

    A: Bomag offers some YouTube maintenance videos, but they are generic. The full service manual contains proprietary dimensional drawings that no video includes.