Bomag BW177 D, DH, PDH-40 Repair Manual — Wiring Diagrams

$39.99

Model: BW177 D-40 | BW177 DH-40 | BW177 PDH-40
Type: Single drum roller
818 Pages·71 MB·Searchable PDF·English·Print-Ready
  • ✓ Wiring Diagrams
  • ✓ Hydraulic Schematics
  • ✓ Torque Specs
  • ✓ Multi-Level Bookmarks (2-level navigation)

Same factory service manual used by authorized dealer technicians.

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Bomag BW177 D/DH/PDH-40 electrical wiring diagram for starting and engine speed system
Bomag BW177 D, DH, PDH-40 Repair Manual — Wiring Diagrams
$39.99

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At 818 pages, this official Bomag BW177 D repair manual PDF (OEM ID 0852794) provides the exact structural and hydraulic teardowns needed to keep your D-40, DH-40, and PDH-40 single drum rollers making grade. Extensive hydraulic schematics trace the closed-loop travel and vibration circuits, detailing the Sauer Danfoss axial piston pumps and Poclain MS drive motors. When the machine refuses to drive or the vibrator shaft speed drops, dedicated troubleshooting charts guide you directly to the faulty charge pressure relief valve or servo control. You will verify system health against concrete figures, like the 435 bar maximum travel pressure on the D-40 or the 12/2.9 V/kW starter rating. Nothing shuts down a paving train faster than a roller parked mid-mat waiting on a single test spec. Download this bookmarked, text-searchable file to your tablet and carry the answers right to the operator's platform.

What's Inside This Bomag BW177 D/DH/PDH-40 Repair Manual

SystemPagesKey Topics
Symbols Used in This Manual8-9Danger, Warning, Caution, Note
Service and Repair Precautions10-30Poisonous Substances, Engine (Air Conditioning System, Battery)
Specifications and Maintenance Schedule31-41Fuels and Lubricants (Engine Oil, Approved Engine Oils, Hydraulic Oil, Running-In Instructions), Engine Oil Level, Water Separator, Fuel Level, Hydraulic Oil Level, Dust Separator, Tire Pressure
Tests, Adjustments and Flushing42-84Control Solenoid, Servo Control, High Pressure Port, Charge Pressure Relief Valve, Leak Oil Connection, Travel Control Lever, Special Tools, Checking the Rotary Speeds, Checking and Adjusting the Mechanical Neutral Position of the Travel Pump, Pressure Tests in the Travel Circuit, Flushing - General, Hose Routing for Flushing
Trouble Shooting Charts85-114Neutral Position, Travel Control Cable, High and Charge Pressure, Magnetic Coil, Brake Releasing Pressure, Steering/Charge Pump, Check the Neutral Position, Check the Mechanical O-Position, Adjust the Mechanical 0-Position, Check the Servo Control, Check the Travel Control Cable, Check High and Charge Pressure
Drum and Oscillating Articulated Joint115-164Special Tools, Removing the Drum, Removing and Installing the Drum, Installing the Drum, Repair Overview Drum, Repairing the Drum, Disassembling the Bearing Cover, Removing and Installing the Oscillating Articulated Joint, Dismantling the Oscillating Articulated Joint, Assembling the Oscillating Articulated Joint
Service Training165-225Diesel Engine Monitoring, Travel Pump (Cross-Sectional View of Travel Pump, View of the Rotating Group, Function), Tandem Pump (Tandem Pump, Connections an Adjustment Points)
Electrics226-392Function Test, Instrument Cluster, Electric Control Cabinet with Vibration Module, Plug Assignment with Operating Hour Meter, Bw177D-40, Bw177Dh/Pdh-40
Air Conditioning393-441Compressor, Condenser, Dryer, Expansion Valve, Evaporator, Defroster Thermostat
Sauer Danfoss Axial Piston Pumps (Series 90 and 42)442-597Variable Displacement Pump, Fixed Displacement Motor, Charge Pump, Multi-Function Valves, Displacement Limiters, Speed Sensors, Manual Displacement Control, Electrical Displacement Control, Charge Relief Valve, Loop Flushing Valve, Filtration Adapters, Shaft Seal
Poclain MS Hydraulic Motors598-677Brake Assembly, Bearing Support, Cylinders Block Assembly, Valving, Cam Assembly, End Cover
Sauer Danfoss Series 51 Bent Axis Variable Motors678-757Basic Hydraulic Circuits, Variable Displacement Motors, Controls, Displacement Limiters, Loop Flushing, Pressure Compensator Regulator
Dana 192 Axle and Detroit Locker NoSpin758-818Maintenance and Lubricant, Planetary Reduction, Bevel Pinion, Differential Unit, Braking Unit, Torque Table, Vehicle Performance, Installation, Maintenance, Trouble Shooting, Exploded Views

Quick Reference Specifications

SpecificationValuePage
Air conditioning system evacuation time45 minutesp. 19
Air conditioning system run time at idle speed10 minutesp. 19
Starter voltage/power12/2.9 V/kWp. 31
Battery voltage/capacity12/100 V/Ahp. 31
Travel pressure max. BW177D-40435 barp. 32
Charge pressure limitation25 barp. 32
Magnetic coil voltage14Vp. 93
Magnetic coil current consumption1.8Ap. 93
Engine Oil Capacity9qtp. 38
Brake Releasing Pressuremin. 12 barp. 32
Max. Steering Pressure200 barp. 32
Multi-function Valve Tightening Torque89 Nmp. 181
BrandBomag
ModelBW177 D-40, BW177 DH-40, BW177 PDH-40
Machine TypeSingle drum roller
Manual TypeRepair Manual
LanguageEnglish
FormatSearchable PDF (Digital Download)
Pages818
File Size71 MB
Manual No.0852794
Wiring DiagramsYes
Hydraulic SchematicsYes
Torque SpecificationsYes
Bookmarked / IndexedYes