Charge pressure on the travel circuit, servo control adjustment, exciter drive inside the drum: the Bomag BW 177 D-4 Service Training PDF (OEM 008 099 90, 113 pages) settles those questions with factory figures for this single drum roller. Hydraulic schematics trace the closed-loop travel pump through the axle and drum drive motors, while wiring diagrams close out the book, down to the seat contact circuitry behind the interlock. Troubleshooting tables for travel, vibration and steering match each symptom to a pressure check you can run at the ports, and the Deutz diesel section covers the fuel system through the plug-in injection pump. Set inlet valve clearance to 0.3 mm, outlet to 0.5 mm, and pull the injection pump nuts to 21 Nm. A roller parked mid-lift burns the whole crew's daylight. Bookmarked and text-indexed, this PDF puts your section two taps away, right after download.
What's Inside This Bomag BW 177 D-4 Manual
| System | Pages | Key Topics |
|---|
| List of Components | 8-10 | Technical Data |
| Maintenance | 11-14 | Maintenance Table |
| Deutz Diesel Engine | 15-32 | Service Side, Starter Side, Lubrication Oil Circuit, Fuel System, Checking and Adjusting the Valve Clearance, Plug-In Injection Pump |
| Travel System | 33-62 | Travel Pump, Servo Control, Charge Pressure Relief Valve, High Pressure Relief Valve, Pressure Override, Axle Drive Motor, Drum Drive Motor, Trouble Shooting Travel System |
| Vibration | 63-79 | Vibration Pump, High Pressure Protection, Control, Charge Pump, Vibration Motor, Drum, Trouble Shooting Vibration |
| Steering | 80-89 | Steering Pump, Steering Valve, Articulated Joint, Trouble Shooting Steering |
| Electrical System | 90-113 | Inspection of Seat Contact Circuitry, Wiring Diagrams, Electrical Component Listing |
Quick Reference Specifications
| Specification | Value | Page |
|---|
| Tightening torque for injection pump nuts | 21 Nm | p. 27 |
| Injection Pump Plug Tightening Torque | 18 Nm | p. 29 |
| Engine Power | 54 kW | p. 9 |
| Inlet Valve Clearance | 0.3 mm | p. 9 |
| Outlet Valve Clearance | 0.5 mm | p. 9 |
| Engine Oil Capacity | 13.5 l | p. 10 |
| Hydraulic Oil Capacity | 60 l | p. 10 |
| Steering Pressure | 200 +/-10 bar | p. 55 |
| Charge Pressure | 25 +/-1 bar | p. 55 |
| Brake Release Pressure | 25 bar | p. 59 |
