What oil goes in the exciter shaft tube, how the electronic immobilizer behaves at start-up, which control sets the crabwalk: the 140-page Bomag BW 174 AP-4 operator manual PDF, factory document 008 064 01 for this tandem vibratory roller, settles those questions the way no forum thread can. Nearly half the book is maintenance, with fuel and lubricant tables covering everything from the sprinkler system to the travel gears, and interval charts running from daily level checks out to coolant changes. Operating chapters walk you through seat rotation and travel direction confirmation, vibration switching, the edge cutter, and mounting the precision spreader. Blow the combustion air filter clean at no more than 2.1 bar, and call your battery fully charged only at 12.6 volts across the poles. Guess wrong on the exciter oil and the drum pays for it. Bookmarked and text-searchable, this PDF goes wherever the roller does.
What's Inside This Bomag BW 174 AP-4 Operator Manual
| System | Pages | Key Topics |
|---|---|---|
| Technical Data | 9-12 | Weights, Dimensions, Travel Characteristics, Drive, Brake, Steering |
| Safety Regulations | 13-22 | General, Towing Speed and Distance Limits |
| Indicators and Controls | 23-40 | General Notes, Description of Indicators and Control Elements, Instrument Cluster Fault Code Display |
| Operation | 41-74 | General, Tests Before Taking Into Operation, Electronic Immobilizer, Starting the Engine, Starting with Jump Wires, Driving the Machine, Steering, Stopping the Machine |
| Maintenance, Routine Checks | 76-108 | General Notes on Maintenance, Fuels and Lubricants, Table of Fuels and Lubricants, Running-In Instructions, Maintenance Table, Checking the Engine Oil Level, Checking the Fuel Level, Check the Hydraulic Oil Level |
| Maintenance, Service, Replacement and Lubrication | 109-134 | Servicing the Air Conditioning (Summer Operation), Cleaning the Circulation Air Filter for the Heating, Changing the Bypass Filter, Draining the Fuel Tank Sludge, Check, Adjust the Valve Clearance, Checking the Engine Mounts, Check the ROPS, Check the Travel Control |
| Trouble Shooting | 135-140 | General Notes, Engine Problems |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Compressed air pressure for cleaning | 2.1 bar | p. 95 |
| Reference voltage for fully charged battery | 12.6 V | p. 107 |
| Reference voltage for 50% discharged battery | 12.3 V | p. 107 |
| Valve cover tightening torque | 10 Nm | p. 116 |
| Injection lines tightening torque | 30 Nm | p. 116 |
| Intake and exhaust valves clearance | 0.25 +/- 0.02 mm | p. 115 |
| Engine oil quantity for exciter housing | 0.2 litres | p. 120 |
| Operating weight (Cece) with ROPS-cabin | 9200 kg | p. 10 |
| Max. operating weight | 10800 kg | p. 10 |
| Rated power ISO 14396 | 68.6 kW | p. 10 |
| Rated speed | 2400 rpm | p. 10 |
| Engine oil capacity | 13 l | p. 11 |
Bomag BW 174 AP-4 Common Problems This Manual Covers
Bomag BW 174 AP-4 engine cranks slowly or will not start on cold mornings
Check battery voltage first: a healthy battery reads 12.6 V, and anything below 12.25 V needs a recharge before you condemn the starter, page 107. Clean the pole clamps, coat them with pole grease, and confirm the main battery switch is on. Still no fire? Drain the water separator and check the fuel filter bowl, page 96.
Manual Section: Battery Service, Checking the Main Battery Switch p. 107Engine shuts down shortly after startup with a red warning lamp on the dash
Check the coolant level in the inspection glass once the engine has cooled, page 87. The system holds 15 l; top up with the coolant mixture listed in the fuels table on page 80, never plain water. Verify anti-freeze concentration, page 106, and clean debris off the cooling fins so the machine stays in the pass.
Manual Section: Checking the Coolant Level p. 87Engine loses power under vibration load and blows black smoke up the grade
Check the dust discharge valve and pull the main air filter element, page 93. Blow it out from the inside with compressed air at no more than 2.1 bar; replace it if the paper is oily or torn, and never run without the safety element. Inspect the air intake lines and hose clamps for cracks, page 95.
Manual Section: Check, Clean, Replace the Combustion Air Filter p. 93Machine travels weakly or creeps in neutral, drum drive feels sluggish on the mat
Check the hydraulic oil level in the inspection glass and top up to the mark, page 86; the system holds 50 l. Verify the travel lever moves freely and returns to the braking position, page 117. Change the hydraulic oil filter at the 500 hour interval before a starved travel circuit stalls the whole paving train.
Manual Section: Check the Hydraulic Oil Level p. 86Engine or hydraulic oil level drops between daily checks, wet spots under the machine
Check both levels cold before the first pass: engine dipstick against its 13 l capacity, hydraulic level in the sight glass, page 86. Inspect drain plugs, filter housings and hose fittings for weeping, and renew the seal ring wherever you find one. Change engine oil and the filter cartridge every 500 hours, page 103.
Manual Section: Change Engine Oil and Oil Filter Cartridge p. 103Frequently Asked Questions
What do BOMAG BW 174 AP-4 fault codes mean?
If a fault occurs in the electronic control, a fault code is displayed on the instrument cluster instead of the operating hours. You should contact the BOMAG customer service department or your local dealer if you cannot locate the cause or eliminate the fault yourself. p. 28
What are the replacement specifications for fuel filters?
The fuel filter should be changed every 500 operating hours. After changing the filter, you must bleed the fuel system to prevent irregular engine running or stalling. p. 105
What is the correct valve clearance for the engine?
The valve clearance for both intake and exhaust valves on a cold engine is 0.25 +/- 0.02 mm. This adjustment should be performed by trained personnel or authorized service staff. p. 115
What is the required tightening torque for M10 bolts with a 12.9 strength class?
For M10 bolts with a 12.9 strength class, the required tightening torque is 61 ft-lb. This assumes the screws have an untreated and non-lubricated surface. p. 133
What is the engine oil capacity for the BW 174 AP-4?
The engine oil capacity for the machine is approximately 13.2 liters. Always ensure the oil level is between the MIN and MAX marks on the dipstick. p. 80
Is this Bomag BW 174 AP-4 manual a download or a disc?
You download the Operator Manual yourself: 140 pages, searchable PDF, available immediately. Keep a copy on every device you use.
Can I print a copy of this Bomag BW 174 AP-4 Operator Manual for the shop?
You can. The PDF is unlocked and carries no copy protection, so print the sections you want and keep the file as your backup.
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