Hydrostatic-drive compatibility
AVG provides the mechanical gearbox stage for a common hydrostatic drive concept in compact construction machinery.
ZF AVG
ZF AVG hydrostatic drive gearboxes for compact loaders and ZF axle systems.
ZF AVG is a compact hydrostatic-drive gearbox solution for articulated compact loaders and other compact construction machinery. Its modular design supports axle-mounted or remote-mounted installation, helping match the driveline to the vehicle layout.
Acoustically optimized helical gearing, compact packaging, reduced power losses and long service life support dependable traction and controlled operation in demanding compact-loader work.
Core product benefits
ZF AVG is designed for compact construction machines where installation space, low-noise operation, traction, efficiency and integration with the axle system all matter. Its modular architecture adapts the drive concept to the vehicle layout and operating requirements.
Axle-mounted or remote-mounted
The modular architecture supports direct mounting on selected ZF axles or remote installation when the machine layout requires a separate gearbox position.
Acoustically optimized gearing
Helical gearing is designed to support smooth, low-noise operation in compact-loader applications.
Compact packaging
The compact gearbox architecture helps vehicle designers use available installation space efficiently around the axle and driveline.
Application-specific adaptation
AVG can be integrated according to the machine layout, axle relationship, hydrostatic circuit and operating duty.
Reduced power losses
The compact driveline concept supports efficient power transfer and helps reduce avoidable losses in demanding compact-loader operation.
High reliability in continuous use
Robust mechanical construction and a compact, application-matched design support dependable operation in arduous compact-construction duty.
ZF MULTITRAC integration
The axle-mounted concept is designed for integration with ZF MULTITRAC axle systems where the common oil-circuit and service requirements are confirmed.
ZF AVG drive and installation functions
ZF AVG combines a hydrostatic drive concept with a compact mechanical gearbox stage. Depending on the vehicle architecture, it can be axle-mounted or remote-mounted; the installation determines the power path, oil-circuit boundary and service requirements.
Hydrostatic input and mechanical output
AVG forms the mechanical gearbox stage within a hydrostatic drive system, transmitting the drive path toward the axle and wheels.
Helical gear reduction
The helical gearing provides the compact reduction path between the hydrostatic drive concept and the axle-side output.
Axle-mounted architecture
When mounted directly on a ZF axle, the gearbox and axle relationship must be treated as one identified installation for oil-circuit and service decisions.
Remote-mounted architecture
Remote installation allows the gearbox to be positioned separately from the axle, with the vehicle-specific connections and service boundaries verified independently.
Common-circuit condition
A directly mounted AVG may share an oil circuit with a ZF axle; in that case the applicable TE-ML 05 axle requirement applies to the common circuit.
Vehicle-system integration
Hydrostatic supply, gearbox condition, axle load, cooling and vehicle control behaviour should be assessed together when traction or noise symptoms occur.
AVG applications and typical ranges
The application and designation ranges below help owners and workshops narrow the identification route. They do not replace the exact machine, serial number and ZF type-plate check.
| Application | ZF designations | Application range and service context |
|---|---|---|
| Articulated compact loaders | 1AVG 150 / 1AVG 185 | Compact-loader applications using a hydrostatic drive concept, with the exact gearbox and axle relationship confirmed from the machine and type plate. |
| ZF MULTITRAC axle systems | MT-L 3010-II to MT-L 3025-II; MT-L 3035 to MT-L 3055 | Axle-mounted AVG installation for documented compact-loader weight classes up to approximately 11 tonnes, subject to the exact vehicle configuration. |
| Small and medium wheel loaders | AVG 150 / AVG 185 | Installation records cover Gehl, JCB, Volvo Construction Equipment, Wacker Neuson, Schäffer and Yanmar/former Terex Schaeff wheel loaders. |
| Remote-mounted driveline layouts | AVG 150 / AVG 185 | Remote mounting is available where the vehicle architecture requires a separate gearbox position; confirm the hydraulic, mechanical and oil-circuit interfaces. |
Main OEM and vehicle installations
The records below show documented AVG 150 and AVG 185 relationships with compact and wheel loaders. Installation records may use the shortened AVG 150 and AVG 185 labels, while the product portfolio may identify the same family as 1AVG 150 and 1AVG 185. Confirm the installed unit against the type plate, installation type, axle relationship and machine data before service.
Showing all 22 installations
Use the filters to narrow the documented AVG installation list. Confirm the exact gearbox, installation type, axle relationship and machine type plate before ordering parts or planning service.
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Correct lubricant and TE-ML 07 selection
ZF AVG does not have one universal Genuine ZF service-fill product specified in TE-ML 07. Lubricant selection is installation-specific: confirm the applicable 07B, 07D, 07E or 07F category for the identified unit and operating conditions.
For an AVG directly mounted on a ZF axle and sharing the common oil circuit, apply the relevant TE-ML 05 gear-oil requirement to the combined transmission-and-axle circuit. A remote-mounted AVG must be assessed against its identified TE-ML 07 category and the vehicle or hydraulic manufacturer's specification. Do not choose oil from AVG 150 or AVG 185 alone.
Oil change and filter service
AVG service cannot be reduced to one generic hourly interval. First establish whether the gearbox is axle-mounted or remote-mounted, identify the oil circuit and then apply the correct TE-ML 07 or common-circuit TE-ML 05 logic. The table below is a planning guide, not a substitute for the exact unit and vehicle service information.
| Application group | AVG designation and TE-ML logic | Initial service / fill | Service fill / interval |
|---|---|---|---|
| AVG 150 / AVG 185 gearbox | 1AVG 150 / 1AVG 185; TE-ML 07B / 07D / 07E / 07F | First-fill product and interval are not specified as one universal value in the TE-ML table | Confirm the identified unit, temperature range and current ZF/vehicle service schedule |
| Axle-mounted AVG | AVG mounted on a ZF MULTITRAC axle; common oil circuit | Use the applicable TE-ML 05 requirement for the combined circuit | Follow the exact axle group, load class and current TE-ML 05 interval |
| Remote-mounted AVG | Remote installation; separate gearbox and axle service boundaries | Confirm the installed AVG and hydraulic/vehicle specification | Follow the current ZF and vehicle or hydraulic manufacturer schedule; no universal hourly interval is assumed |
At outside temperatures below -5 °C, follow the TE-ML 07 warm-up requirement before starting the drive unit; the approved viscosity and temperature range remains dependent on the applicable category. Before returning the machine to work, check the correct oil level and temperature procedure, inspect for leaks and abnormal noise, and assess the removed oil for metallic debris, water or other contamination. Do not add aftermarket oil additives.
ZF AVG FAQ
Practical answers for vehicle owners, workshops and manufacturers planning diagnosis, maintenance or delegated repair.
What is the difference between an axle-mounted and a remote-mounted AVG?
An axle-mounted AVG is integrated directly with the ZF axle and may share a common oil circuit, so the axle and gearbox must be identified and serviced together. A remote-mounted AVG is positioned separately in the vehicle driveline and has different mechanical and hydraulic boundaries and separate oil-circulation circuits. The installation type affects lubricant selection, diagnosis and repair planning; contact ATS with the machine and type-plate information before ordering parts or oil.
What can cause weak traction, abnormal noise or overheating in an AVG drive?
Possible causes include hydrostatic supply or control problems, incorrect oil level or category, restricted cooling, gearbox bearing or gearing wear, axle load, leakage or a vehicle-side control fault. Record whether the symptom appears cold or hot, loaded or unloaded, in forward or reverse, and whether it changes with steering or terrain. Contact ATS with these observations so our team can separate the hydrostatic, gearbox, axle and vehicle-side causes before dismantling the unit.
Why does an axle-mounted AVG follow different oil logic from a remote-mounted AVG?
A directly mounted AVG may share its oil circuit with a ZF axle. In that case the combined circuit must follow the applicable TE-ML 05 axle requirement. A remote-mounted AVG is assessed against the identified TE-ML 07 hydrostatic-mechanical group and the vehicle or hydraulic manufacturer's specification. The AVG designation alone does not determine the correct oil; ATS can verify the installation and circuit before service.
What information should a workshop record before an AVG diagnosis or repair?
Record the AVG designation and type plate, installation type, machine OEM and model, serial number, axle relationship, operating hours, oil history, symptoms, temperature, load and direction conditions, fault messages, hydraulic measurements and any recent work. This evidence helps ATS distinguish a hydrostatic supply issue, gearbox fault, common-circuit axle problem or vehicle-control fault and define the correct repair route.
How should AVG 150 and AVG 185 be identified in installation records?
The product portfolio may use the designations 1AVG 150 and 1AVG 185, while installation records may use the shortened labels AVG 150 and AVG 185. The label is an identification lead, not proof that every machine has the same installed unit. Confirm the type plate, installation type, axle relationship and machine data before selecting lubricant, filters or repair parts; ATS can support the identification.
What must be checked before starting an AVG drive in cold weather?
Below -5 °C, follow the TE-ML 07 warm-up requirement and allow at least 10 minutes for the oil to reach the minimum starting temperature. The correct viscosity and temperature range still depend on the applicable 07 category and identified installation. Do not start or load the drive outside the approved temperature conditions; contact ATS if the machine shows delayed response, noise or traction loss after cold start.
Need post-sale support for a ZF AVG hydrostatic drive gearbox?
ATS supports AVG installation identification, hydrostatic and gearbox diagnosis, correct TE-ML selection, verified replacement-parts supply, repair and overhaul coordination, and manufacturer-delegated warranty work. Send a clear photo of the AVG type plate, including the part list number and AVG unit serial number where visible, the machine OEM and model, machine serial number, axle relationship, operating hours, symptoms, oil history and any diagnostic data.
Contact ATS