A roller that creeps in neutral or loses vibration mid-lift has a hydraulic fault, and this 364-page Bomag BW 212 D-3, 212 PD-3, 214 D-3 and 214 PD-3 repair manual PDF, factory document 008 194 91 for these single drum vibratory rollers, exists to trace it. The connecting plan maps every test port, control solenoid and leak oil line before you hang a gauge, and troubleshooting charts walk weak drive power, overheating oil and dead vibration back to a cause. Repair chapters cover the drum and vibrator unit, the oscillating articulated joint, and full teardowns of the A4VG, A6VM and A10VG pumps and the Poclain drive motors. Confirm the 12 V, 155 Ah battery before condemning a slow starter; torque M12 grade 8.8 hardware to 88 Nm. Swapping pumps on a hunch is expensive guessing. Bookmarked, with a real text layer, the PDF takes you from symptom to spec in seconds and gets the drum back in the pass.
What's Inside This Bomag BW 212 D-3, BW 212 PD-3, BW 214 D-3, BW 214 PD-3 Repair Manual
| System | Pages | Key Topics |
|---|---|---|
| Safety Regulations | 7-10 | General Safety Notes, Hydraulic System Safety |
| General Notes for Repairs | 11-12 | General Repair Procedures, Electrical System Repairs |
| Tightening Torques | 13 | Metric Unified Threads |
| Connecting Plan | 14-16 | Hydraulic Port Identification, Pressure Test Ports, Control Solenoids, Leak Oil Connections |
| Tests and Adjustments | 17-56 | Rotary Speed Checks, Travel Pump Neutral Position, Vibration Circuit Pressure Tests, Flushing Procedures |
| Trouble Shooting | 57-90 | Neutral Drive Issues, Insufficient Drive Power, Hydraulic Oil Overheating, No Vibration |
| Drum Repairs | 91-134 | Drum Removal and Installation, Vibrator Unit Disassembly, Change-Over Weight Maintenance, Rubber Buffer Replacement |
| Oscillating Articulated Joint | 135-156 | Joint Removal and Installation, Rocker Bearing Maintenance, Belleville Spring Assembly |
| Repair Instructions A4VG 71-180 (Variable Displacement Pump) | 157-236 | Sectional Drawing, Dismantling, Assembly, Setting the Control, Tightening Torques, Test Values |
| Repair Instructions A6VM 28-200 (Variable Displacement Motor) | 237-277 | Axial Piston Unit, Sectional Drawing, Dismantling, Assembly, Control Adjustment |
| Repair Instructions A10VG (Variable Displacement Pump) | 278-326 | Sectional Drawing, Dismantling, Assembly, Charge Pump, Control Adjustment |
| Hydraulic Motors (Poclain Hydraulics) | 327-364 | Motor Installation, Commissioning, Routine Maintenance, Brake Release, Troubleshooting |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| All Models | ||
| Torque for M4 bolt (8.8) | 3 Nm (2 ft-lb) | p. 13 |
| Torque for M5 bolt (8.8) | 6 Nm (4 ft-lb) | p. 13 |
| Battery voltage / capacity | 12/155 V/Ah | p. 21 |
| Starter voltage / power | 12/3,1 V/kW | p. 21 |
| Generator voltage/current | 14/55 V/A | p. 21 |
| Fuel tank capacity | 340 L | p. 22 |
| Hydraulic oil tank capacity | 60 L | p. 22 |
| Coolant capacity | 16 L | p. 22 |
| BW 212 D-3 | ||
| Operating weight (CECE) with ROPS and cab | 11100 kg | p. 20 |
| BW 212 PD-3 | ||
| Operating weight (CECE) with ROPS and cab | 11500 kg | p. 20 |
| BW 214 D-3 | ||
| Operating weight (CECE) with ROPS and cab | 13080 kg | p. 23 |
| BW 214 PD-3 | ||
| Operating weight (CECE) with ROPS and cab | 13480 kg | p. 23 |
Bomag BW 212 D-3, BW 212 PD-3, BW 214 D-3, BW 214 PD-3 Common Problems This Manual Covers
Bomag BW 212 D-3 roller won't travel in either direction, drive lever feels dead or delayed
Check charge pressure at the test port with the engine at full speed; you want 24 to 26 bar, shown on page 30. If charge is good, verify the parking brake releases at 12 bar, then work through the travel troubleshooting procedures starting on page 63 before condemning the travel pump.
Manual Section: Travel System Troubleshooting p. 63Hydraulic filter warning light comes on, buzzer sounds, engine shuts down after two minutes
Replace the hydraulic filter element right away; a clogged element trips the buzzer and the two minute shutdown. Cut the old element open and inspect for metal, which points to pump or motor wear. Top up the tank, capacity is 60 L, then retest. If the warning returns, start the fault diagnosis on page 57.
Manual Section: Trouble Shooting p. 57Steering very stiff, drum won't follow or reach the end stops on tight passes
Test steering pressure at the port shown on the connecting plan; expect approximately 175 bar plus charge pressure, the value listed on page 22. Grease the articulated joint fittings and check the rocker bearings for seizure, following the joint procedures that begin on page 135. Condemn the steering valve only after pressures check out.
Manual Section: Steering System TroubleshootingNo drum vibration or vibrator shaft speed too low when vibration is switched on
Confirm charge pressure before opening anything; the vibration circuit will not stroke properly without 24 to 26 bar, verified on page 30. Run the vibration circuit pressure tests in the adjustments section starting on page 17, then inspect the exciter drive and rubber buffers using the drum repair procedures beginning on page 91.
Manual Section: Vibration System TroubleshootingEngine cranks slowly or won't crank at all, clicks once then goes silent
Load test the battery and charging circuit first; the spec is 12 V, 155 Ah, listed on page 21, with generator output rated 14/55 V/A. Clean and tighten both battery terminals, check V-belt tension, then test starter engagement. Follow the electrical repair notes on page 11 before swapping the starter.
Manual Section: General Notes for Repairs p. 11Frequently Asked Questions
What is the torque specification for M12 8.8 bolts on the Bomag BW 212 D-3, BW 212 PD-3, BW 214 D-3, BW 214 PD-3?
For bolts with metric unified threads and an 8.8 strength classification, the torque specification for an M12 bolt is 88 Nm (65 ft-lb). p. 13
What is the nominal charge pressure for the travel circuit on a BW 212 D-3?
The nominal charge pressure for the travel circuit on a BW 212 D-3 is 24 to 26 bar. p. 30
What is the maximum leak oil quantity for the vibration motor?
The maximum leak oil quantity for the vibration motor (without flushing) is approximately 1 Liter/Min. p. 21
What is the nominal frequency for the vibration system?
The vibration system has two nominal frequency settings: 30 Hz and 36 Hz. p. 22
What is the procedure for bleeding the travel circuit after a repair?
To bleed the travel circuit, connect pressure test hoses to the charge pressure and high pressure test ports, guide the ends into a container, and crank the engine for 30 seconds with the starter. Repeat this procedure after a one-minute wait until oil runs out of the measuring hose. p. 45
Is this Bomag BW 212 D-3 Repair Manual a digital download?
A single searchable PDF file of 364 pages, downloadable right after payment. Nothing ships, nothing waits in the mail.
Is printing allowed for this Bomag BW 212 D-3 Repair Manual?
Yes. The PDF is DRM-free, so printing works from any reader and any printer.
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