The Bomag BW 174 AP-4 AM service manual PDF, factory document 008 916 49, breaks the tandem vibratory roller down across 932 pages, from travel and vibration pumps through both AM and AP drum rebuilds and pivot steering. Full-machine schematics sit at the back: hydraulic and wiring diagrams reproduced wire by wire and line by line. Troubleshooting charts trace no-vibration, low exciter shaft speed, and creep with the travel lever in neutral back to the component at fault. Fill the hydraulic tank with 50 litres, torque the rotary speed sensor to 12 Nm, and run your pressure tests against real factory numbers. A cooling mat won't wait while you hunt one relief valve setting. Print the pages you need and let them get greasy on the bench; the bookmarked, text-searchable file downloads right after checkout.
What's Inside This Bomag BW 174 AP-4 AM Manual
| System | Pages | Key Topics |
|---|---|---|
| General | 9-32 | Introduction, Safety Regulations, General Repair Instructions |
| Pivot Steered Tandem Rollers | 33-40 | Pivot Steered Bomag Tandem Rollers |
| Technical Data | 41-46 | Engine Data, Travel Pump, Vibration Pump, Steering Pump, Filling Capacities, Vibration System |
| Maintenance | 47-56 | Fuels and Lubricants, Table of Fuels and Lubricants, Running-In Instructions, Maintenance Table |
| E-Plan Wiring Diagrams | 57-70 | Understanding Wiring Diagrams, Circuit Symbols in the Circuit Diagram, Identification of Switch Blocks in the Wiring Diagram |
| Electrics | 71-192 | Designation of Components in the Wiring Diagram, Terminal Designations in Wiring Diagram, Battery Ground and Analog Ground, Current and Voltage, Pulse Width Modulation, Resistance |
| Electronic Modules | 193-358 | Electrics Sx, Electrics Bam, Electric Module A72 |
| Hydraulics | 399-442 | Hydraulic Circuit, Travel Pump, A4VG56 Ep, Vibration Pump, A10VG45 Ep, Travel Circuit, Drum Drive Gft 7 G2091 / G2093, Vibration Circuit |
| Test and Adjustment Points | 443-456 | Overview Travel/Vibration Pump, Test and Adjustment Points Travel and Vibration Pumps, Measuring and Adjustment Points on Brake Valve |
| Tests and Adjustments | 457-486 | Special Tools, Activate Service Mode, Driving Against the Closed Brake, Turn the Steering Against an End Stop., Checking the Rotation Speeds, Pressure Tests in the Travel Circuit |
| Trouble Shooting | 487-516 | Trouble Shooting Chart |
| Flushing and Bleeding | 517-544 | Special Tools for Flushing, Flushing - General, Flushing Schematic for Travel Circuits, Flashing the Travel Circuit, Bleeding the Travel Circuit |
| Air Conditioning System | 545-586 | Physical Basics, Refrigerant R134a, Compressor Oil / Refrigeration Oil, Working Principle of the Air Conditioning System, Monitoring Devices, Components |
| Engine | 587-616 | Features, Cooling System, Removing and Installing the Thermostat, Checking the Thermostat in Disassembled State, Checking the Coolant Level |
| Drum | 617-694 | Repair Overview AM-drum, Removing the AM-drum, Disassembling the AM-drum, Assembling the AM-drum, Installing the AM-drum, Repair Overview AP-drum, Removing the Ap Drum |
| Pivot Steering | 695-714 | Repair Overview Oscillating/Pivot Steering, Disassembling the Oscillating/Pivot Steering, Assembling the Oscillating/Pivot Steering, Repair Overview Pivot Steering |
| Suppliers Documentation | 715-864 | Travel Pump, Vibration Pump, Vibration Motor, Travel Motor |
| Circuit Diagrams | 865-932 | Hydraulic Diagram, Wiring Diagram |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Rotary speed sensor tightening torque | 12 Nm | p. 140 |
| F67, BDC, potential 30 | 15A | p. 169 |
| Engine Oil Capacity | 13.2 litres | p. 51 |
| Fuel Tank Capacity | 180 litres | p. 51 |
| Hydraulic Oil Capacity | 50 litres | p. 51 |
| Coolant Capacity | 15 litres | p. 51 |
| Engine Rated Speed | 2600 rpm | p. 42 |
| Travel Speed | 10.4 km/h | p. 42 |
| Minimum End Float (Exciter Housing) | 1.2 mm | p. 649 |
| Minimum End Float (Exciter Unit) | 0.5 mm | p. 683 |
| Rubber Buffer Tightening Torque | 412 Nm | p. 655 |
Bomag BW 174 AP-4 AM Common Problems This Manual Covers
Bomag BW 174 AP-4 AM cranks slowly and won't start after sitting overnight in the cold
Check the battery terminals for corrosion and pull them tight before condemning the battery. Verify the battery switch is on, then drain the water separator and change the fuel filter; water in the fuel kills cold starts. Work through the engine starting checks on page 488 and confirm the engine reaches its rated 2600 rpm once running.
Manual Section: Trouble Shooting p. 488Roller travels weak, drum drive sluggish, machine creeps forward with travel lever in neutral
Confirm the hydraulic oil level first; the system holds 50 litres and a starved charge pump makes travel weak. Verify the travel lever returns fully to mechanical neutral with nothing binding in the linkage. Measure charge pressure at the pump test points shown on page 443, and replace the hydraulic oil filter if pressure sags once the oil is warm.
Manual Section: Trouble Shooting p. 488No vibration when selected, exciter won't start or drops out mid-pass on the mat
Inspect vibration fuse F03 first; a blown fuse is the cheapest fix on this machine. Test power supply to the vibration solenoid against the wiring diagram, working the switch while you probe. If the exciter shaft rumbles or drags by hand, check bearing end float; minimum is 0.5 mm on the exciter unit per page 683.
Manual Section: Trouble Shooting p. 488Engine loses power under vibration load with black smoke out the exhaust
Remove the main air filter element and inspect the safety element behind it; replace both if they are loaded rather than blowing them out. Check the intake hoses and clamps for cracks and loose fittings. Verify the engine oil is not overfilled; the sump takes 13.2 litres, and follow the exhaust smoke checks on page 488 if smoke continues.
Manual Section: Trouble Shooting p. 488Engine shuts down shortly after startup with red warning lamp on the dash
Verify the coolant level with the engine cold and top it up; the system holds 15 litres of the correct water and antifreeze mix. Clean debris from the radiator fins, then check the thermostat using the procedure in the engine section starting on page 587. If the lamp stays on with coolant full, test the coolant level sensor before condemning the engine.
Manual Section: Engine p. 587Frequently Asked Questions
What is the procedure to clear or delete stored fault codes on the ESX control?
To delete all stored fault codes, the engine must be stopped. Enter code number 0710 (without service code 9999) via the display module, then switch the ignition off and on again to complete the deletion. p. 215
What is the tightening torque for M10 screws with strength class 8.8 on the Bomag BW 174 AP-4 AM?
The tightening torque for M10 screws with a strength class of 8.8 is 51 Nm. p. 28
What is the recommended interval for changing the hydraulic oil filter element on the Bomag BW 174 AP-4 AM?
The hydraulic oil filter element should be replaced every 500 operating hours. p. 50
What is the correct valve clearance for the intake and exhaust valves on the Bomag BW 174 AP-4 AM?
The valve clearance for both intake and exhaust valves on a cold engine is 0.25 +/- 0.02 mm. p. 54
What is the tightening torque for the drum drive shaft nut (M 140 x 1.5) on the Bomag BW 174 AP-4 AM?
The tightening torque for the shaft nut (M 140 x 1.5) on the drum drive is 4175 Nm. p. 112
Is this Bomag BW 174 AP-4 AM manual a download or a disc?
A single searchable PDF file of 932 pages, downloadable right after payment. Nothing ships, nothing waits in the mail.
Does this Bomag BW 174 AP-4 AM manual allow printing?
Printing is allowed without restriction. Pull the pages you need for the job and bin them when they get greasy.
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