Description

Bomag BW 177, BW 179 DH, PDH-4 2004 Training Manual

If you are turning wrenches on a Bomag roller and don’t have the factory training manual in hand, you are working blind. I have seen too many techs burn up a charge pump because they took a guess on a pressure setting. This Bomag BW 177, BW 179 DH, PDH-4 2004 Training Manual is the same binder Bomag hands to its own service guys during training. 201 pages of OEM data, not a third-party rewrite.

Skip the aftermarket PDFs that leave out the ESX control logic. This manual includes the full fault code list, input codes, and service mode access for the ESX controller. If you ever get a flashing display and need to know what “Selected fault reactions of the ESX control” means, you turn to section 9 of this manual. That’s where the detailed fault code descriptions live — not some generic list. I personally used a copy of this on a BW 179 DH that was stuck in limp mode. Traced it to a seat contact switch because the wiring diagram on page 004 of the schematics showed the exact circuit. Aftermarket manuals never include that level of detail.

Deutz Diesel Engine and Fuel System Coverage

The Deutz diesel engine section (section D) covers everything from lubrication oil circuit to coolant circuit. Fuel system includes the EMR actuator Y 137, troubleshooting steps, and the procedure for determining compensation shim thickness when you replace plug-in fuel injection pumps. Page D22 walks you through fuel system trouble shooting. That page alone can save you from pulling a pump that isn’t bad. Electrical components on the engine are mapped with measuring points. If you need to check the EMR system, the manual shows the exact test points.

ESX Control: What the Fault Codes Actually Tell You

The ESX control section is not a generic OBD scan. Bomag built a proprietary logic that locks out certain functions until you diagnose the root cause. Section 9 of the manual lists every fault code with a description of the fault reaction and possible causes. For example, if the display shows an error code related to the travel system, you can look up the reaction — maybe the machine reduces travel speed, or it disables vibration. The manual also covers calling up the service mode. Aftermarket docs won’t tell you how to access that service mode. This one does. Manual Transmission might be relevant if you are dealing with older equipment, but on these Bomag rollers the hydrostatic travel system uses a completely different setup.

7 Systems Documented from Travel to Vibration

Here is what the manual sections cover (in order of the actual TOC):

• Technical data and adjustment values (section B)
• Maintenance chart with intervals
• Deutz diesel engine with EMR (section D)
• Travel system – includes travel pump, charge pressure relief valve, high pressure relief, pressure override, drum drive motor, test points (section E)
• Vibration system – vibration pump, high pressure relief valves, control, drum, test and adjustment points (section F), trouble shooting starts on page F13
• Steering system – charge pump, steering pump, steering valve, articulated joint, measuring points (section G)
• Electrics – full wiring diagrams and component listing (section H)

Each system has its own trouble shooting subsection with “The display shows error codes” bullet points. That means you get machine-specific diagnostic flowcharts, not generic “check fuse” advice.

Charge pump pressure is critical on these machines. The manual gives you the test point locations and adjustment procedure. Don’t rely on a spec from a web forum. Use the factory values from the manual.

Why a Factory Training Manual Beats Aftermarket

Aftermarket PDFs are usually scanned from worn-out copies with missing pages or blurred schematics. This manual is an original Bomag training document from 2004. The wiring diagrams are in two versions: a general schematic set and a second set specific to machine number 58270095. That is the kind of redundancy that helps you when the wire colors fade. The manual also includes a hydraulic diagram. Every torque spec, every pressure setting, every adjust value comes from the same engineering department that designed the rollers. If you are a rental yard mechanic or a shop owner with a fleet of Bomag single drum rollers, you need this. BOMAG BW 177 213 226 Training Manual is a related manual if you have the larger model, but for the BW 177 and BW 179 DH, this is the one.

Source Validity: Original Bomag Print, Not a Reprint

I check the part number on the front: 008 099 92 10/2004. That is Bomag’s own number. The page quality is crisp, the diagrams are not faded. There is no copyright infringement — it is a training manual from Bomag themselves. You are getting the same content that Bomag’s service training instructors use. And it is 201 pages, not a condensed version. Each section is tabbed in the PDF just like the paper manual. You can jump to the maintenance chart, the engine electrical, or the wiring diagrams instantly. Bomag BC 670 RB Training Manual – Factory Specs & Repair Docs covers a different machine, but the level of detail is the same.

One more thing: the document includes the entire stromlaufplan.pdf (wiring diagrams) in English. You get 12 circuit diagrams plus a component listing. Bomag BW 24 R 2001 Training Manual – Factory Specs & Repair is older but similar in depth. If you are serious about Bomag repairs, you want the factory manual, not a reprint.

FAQ

Does this manual cover the PDH-4 model?

Yes, covers BW 177, BW 179 DH, and PDH-4.

What engine is covered?

Deutz diesel with EMR system. Detailed fuel pump shim adjustment procedure on page D28. Also includes electrical components and measuring points on the engine.

Are wiring diagrams included?

Two complete sets of wiring diagrams: one general schematic and one specific to machine number 58270095. Includes circuit diagrams for supply, starting unit, engine EMR II, driving system, steering, vibration, joystick, Variocontrol, BCM, illumination, cabin equipment, heater, AC. Also component listings with part numbers. You get 12 circuit diagrams in each set.

Is this a digital PDF?

Yes, you get the full 201-page factory training manual as a downloadable PDF. Manual Transmission is unrelated but useful for older driveline work; this manual covers hydrostatic only.

Stop wasting billable hours with incomplete data. You know the drill: check the wiring, verify the torque, confirm the pressure. This manual gives you the factory numbers for all of that. Access the Factory Manual now and get your Bomag roller back in the dirt where it belongs.