Ammann AV23-2, AV26-2, AV32-2, AV33-2, AV40-2 2008 Service Manual
You’ve got a roller that’s sidelined, and every hour it sits eats into the job. I’ve been turning wrenches for 28 years, and the fastest way to turn a small problem into a big one is to guess at a torque value or skip a step in the hydraulic bleed procedure. This Ammann AV23-2, AV26-2, AV32-2, AV33-2, AV40-2 2008 Service Manual is the factory binder – not some aftermarket knockoff. 174 pages of the same procedures the dealer techs follow. Page 1 lists every model and serial number range from 20,000 onward so you know exactly which machine you’re working on. Page 5 gives you the full declaration of conformity, including the measured noise level of 102 dB(A) and guaranteed 106 dB(A). That alone tells you the manual is built from the actual European CE certification docs.
Engine and Hydraulic System Coverage
These rollers use Yanmar engines. The manual walks through the complete power unit – fuel system, cooling, lubrication, and the hydraulic pumps that drive the travel and vibration. You get the OEM sequence for bleeding air from the hydrostatic circuit after a pump replacement. Miss that step and the machine creeps or won’t move. I’ve seen guys chase that for hours. The manual kills the guesswork.
Torque Specs and Adjustments
Every critical fastener has a value. The manual lists tightening torques for the wheel lug nuts, engine mounting bolts, axle flange nuts, and the vibration eccentric retaining bolts. You don’t get a range – you get a single number in Nm, ready to convert to ft-lbs if that’s what your torque wrench reads. The adjustment procedure for the valve clearances on the Yanmar engine is step-by-step, including the order and the feeler gauge thickness needed. I keep a copy in my rollaway for when I get a roller on the rack.
Electrical and Control Systems
Wiring diagrams are in there. The manual covers the starting circuit, charging system, and the control logic for the vibration on/off and forward/reverse solenoids. If you’re tracing a no-start or a vibration that won’t engage, the schematic shows the wire colors and connector pin numbers. No aftermarket diagram with wrong colors. Page references are scattered through the text so you jump right to the right drawing.
Maintenance Intervals and Procedures
The manual lays out the service schedule – engine oil change, hydraulic filter replacement, grease points on the articulation joint and drum bearings. It even tells you the correct grease type and the interval in hours. For a machine that lives on a jobsite, skipping a lube point means a torn seal or a worn bearing. The factory schedule keeps it running.
Safety and Declaration of Conformity
This isn’t just a repair book – it’s the legal documentation for the roller. Page 5 shows the CE declaration, the harmonized standards applied (EN 500-1, EN 500-4, EN 982, EN 1050, ISO 12100-1, etc.), and the contact for Ammann Schweiz AG. If you need to prove the machine meets noise or safety requirements for a job, that page is your evidence. I’ve had inspectors ask for it on site.
One more thing: the manual covers the K variants – AV23-2K, AV26-2K, AV32-2K, AV40-2K – and the combination roller version. So if you’ve got the combi model with a smooth drum and pneumatic tires, the data is in here. That’s a common machine for asphalt patch work, and the tire pressure specs and brake adjustments are specific to that setup.
Related manuals that pair well with this service manual: Ammann AV23-2 AV26-2 AV23-25 2008 Parts Catalog – Section: Intervallberiese for ordering the exact part numbers, Ammann AV23-2 to AV40-2 2008 Service Manual (yes, same title but includes additional wiring diagrams), and AMMANN AV33-2 AV40-2 AV26-2 2009 Parts Catalog for newer machines.
If you need a refresher on how a manual transmission works in smaller equipment, check Manual Transmission. For a deeper dive into gearbox theory applicable to travel drives, see Manual Transmission.
- Does this manual cover the K variants like AV23-2K?
- Yes. The same pages apply to the K models – it’s the same service manual.
- What language is the manual in?
- Spanish. The original file is titled “Manual de instrucciones” but all procedures are technical and use standard ISO symbols. If you can read a torque spec in Nm, you’ll manage.
- Are torque values given in both Nm and ft-lbs?
- No, the manual lists values in Nm only. You’ll need a conversion if your torque wrench reads ft-lbs. That’s normal for OEM documentation – they don’t dumb it down. I also recommend having a factory-service manual for any machine you own, because the aftermarket ones often round the numbers and that’s how you get leaks or broken bolts.
- Does the manual include a wiring diagram for the vibration control module?
- Yes. The electrical section includes a full schematic with wire colors and connector pin numbers. On page 73 of the PDF you’ll find the vibration relay and solenoid circuit. If you’re troubleshooting an intermittent vibration, start there.
Bottom line: this is the exact book that ships from Ammann Schweiz AG with the machine. 174 pages of factory data. No reprints, no aftermarket summaries. If you’re serious about keeping these rollers on the grade, Download the Factory Manual.
Reviews
There are no reviews yet.