Comprehensive service and repair guide for Hydro-Gear's ZT-3400, ZT-3600, and ZT-3800 integrated zero-turn transaxles, covering maintenance…
This manual provides detailed service and repair instructions for Hydro-Gear’s ZT-3400®, ZT-3600™, and ZT-3800™ Integrated Zero-Turn Transaxles. It includes technical specifications, troubleshooting guides, maintenance procedures, and hydraulic schematics. The transaxles are designed for lawn and garden equipment, featuring variable displacement pumps and fixed displacement motors. Safety procedures and component-specific maintenance are covered in depth, including fluid changes, filter replacement, and disassembly/reassembly steps.
The manual also includes exploded views and parts lists for each model, along with a glossary of industry terms. It emphasizes safety practices, tool usage, and proper handling to prevent injury or equipment damage during servicing.
| Overall Transaxle Reductions | ZT-3400®: 23.16:1, ZT-3600™: 23.16:1, ZT-3800™: 21.09:1 |
|---|---|
| Pump Displacement | 0.73 in³/rev [12cc/rev] |
| Motor Displacement | 0.97 in³/rev [16cc/rev] |
| Filter Rating | 25 Micron Nominal, 40 Micron Absolute Suction Filter |
| Input Speeds | Maximum Hi-Idle (No Load) 3600 rpm, Minimum 1800 rpm |
| Output Torque | Up to 500 lb-ft [677 N-m] |
| Speed | Up to 10 mph [16 kph] (ZT-3400®), Up to 11 mph [17 kph] (ZT-3800™) |
| Gross Vehicle Weight | Up to 1600 lb [725 kg] (ZT-3400®), Up to 1800 lb [816 kg] (ZT-3800™) |
| Axle Shaft Diameter | 1.125 in [28.56 mm] |
| Weight of Unit | 34.5 lb [15.6 kg] (ZT-3400®), 35.8 lbs [16.2 kg] (ZT-3800™) |
Up to 500 lb-ft [677 N-m].
0.73 in³/rev [12cc/rev].
25 Micron Nominal, 40 Micron Absolute Suction Filter.
Up to 11 mph [17 kph].