Description

Bomag BC 571 RB, BC 671 RB, BC 771 RB 1998 Repair Manual

If you’ve spent your Saturday chasing a hydraulic leak on a Bomag compactor because the third-party manual had the wrong crush washer spec, you know my pain. That’s exactly why this 1998 factory repair manual exists – to put the correct numbers in your hands before you touch a wrench. It’s 158 pages of Bomag-issued data for the BC 571 RB, BC 671 RB, and BC 771 RB sanitary landfill compactors. No reprints, no guesswork, just the OEM print from the same guys who built the machine.

Safety Regulations and Genuine Parts

Page 1 lays out exactly what Bomag expects during any repair: level ground, articulation lock engaged, hard hat and steel boots. That’s not fluff – that’s the difference between walking out of the shop and being carried out. The manual repeats the standard ‘Note’, ‘Caution’, ‘Danger’ headers throughout, but pay attention to this line on page 3: “Use only genuine BOMAG spare parts.” Aftermarket seals might save you five bucks, but the manual tells you straight up that non-approved parts haven’t been tested for active or passive safety. If you’re working on a compactor that spends its life crushing garbage, that’s not a gamble you want to take.

What Torque Values Are Listed?

Every bolted joint on these machines – engine mounts, hydraulic pump flanges, articulation pivot pins – has a factory torque spec. The manual doesn’t give you a range; it gives you the exact foot-pounds (or Newton-meters, if you prefer metric). Need the charge pressure for the hydrostatic drive? That’s somewhere after the general repair instructions. I can’t read the whole thing for you, but I can tell you that the torque chart on the page near the back will keep you from snapping bolts in a blind hole. Stop relying on internet forums. Get the real number from the source.

158 Pages of Factory Repair Data

That’s a thin manual compared to some car shop manuals, but every page carries weight. You get the full tear-down sequence for the transmission, the final drives, the articulation joint, and the engine ancillary systems. The manual was written in 1998, so it matches the production build of these machines – not an updated reprint that skips a critical step. The PDF is a direct scan of the original binder, which means you see the same diagrams and tables the Bomag dealer had on his bench. If you’re looking for a Manual Transmission overhaul on a BC 771 RB, the step-by-step sequence is laid out with required tool lists and safety warnings before each disassembly.

Understand the Sanitary Landfill Compactor Systems

These aren’t your granddad’s farm tractors. The BC 571 RB, BC 671 RB, and BC 771 RB use a hydrostatic drive, a separate hydraulic system for the blade and steering, and a complex cooling package to deal with landfill debris clogging the radiators. The manual covers each system in its own chapter: engine, transmission, final drives, steering, hydraulic system, electrical system, and special equipment. You won’t find a wiring schematic that looks like a cactus – the diagrams are clear, labeled, and cross-referenced to the component locations. Before you start chasing a short in the control panel, open the manual to the electrical section and trace the circuit on paper first.

Transmission and Drivetrain: Factory Disassembly Order

The transmission on these compactors is a bolt-in unit shared across all three models. The manual gives you the exact disassembly order – remove the drive shafts first, then the mounting bolts, then slide the transmission out on a lifting table. Each step has a note about the required lifting capacity and a warning to secure the machine against rolling. If you skip the part about locking the articulation joint, you’re asking for a pinch injury. The manual even specifies the exact sequence for torquing the bell housing bolts to prevent warping. That’s the kind of detail you don’t get from a generic service guide.

Source Validity: Why OEM Matters for This Bomag Manual

There’s a reason I say OEM or nothing. This manual is printed by Bomag, not a third-party re-publisher. Look at page 2: “Thought out by specialists … electronically processed … advanced technical documentation.” That’s not marketing – that’s a guarantee that every spec came from the engineering department that designed the machine. Aftermarket manuals may copy the text but they often screw up the torque tables or omit safety warnings. This one includes the product liability disclaimer on the title page, meaning Bomag takes responsibility for the accuracy. If you’re running a shop that works on these compactors, having the factory manual on your tablet keeps you out of cross-threaded holes and warranty disputes. Check out the related BOMAG BC 671 RB / BC 771 RB Compactor Manual for a different year, or the BOMAG Refuse Compactor BC 771 RB Service Training if you want a deeper dive on diagnostics. For a different machine, the Bomag MPH 100 R/S 1999 Repair Manual – Factory OEM Shop Manual follows the same factory format.

Frequently Asked Questions

Does this manual cover the BC 571 RB specifically, or only the BC 771 RB?

It covers all three models – BC 571 RB, BC 671 RB, and BC 771 RB – in one document. The differences between them are noted in the text, and most procedures are identical.

How do I verify that the torque values in this manual are correct for my machine’s serial number?

Bomag issued this manual in 1998 for the production run of that year. If your machine’s serial number falls within the range listed on the inside cover (which is visible in the PDF), the specs are direct. For machines built after 1998, you would need a later revision. The torque values for critical fasteners like the cylinder head and axle flanges are taken from Bomag’s own engineering drawings, not from a generic database. Compare the number on the chart to the bolt grade stamped on the fastener head – if they match, you’re good. If you find a bolt that’s been replaced with a non-OEM part, stop and get the correct fastener first. The manual explicitly warns against using non-genuine parts, and torquing a cheap bolt to factory spec can snap it.

That’s the short of it. If you’re maintaining a fleet of landfill compactors or just got handed a BC 571 RB project, get the factory data on your screen before you start wrenching. Access the Factory Manual and keep it pinned to your tool box.