Zf Ecolife 6ap1700b
The 6AP1700B is used across many bus and coach brands, demonstrating its industry-wide acceptance.
(Note: If a fleet chooses to mix the factory fluid with lower-grade mineral or semi-synthetic oils, an intermediate fluid flush must be executed at exactly half the standard interval to prevent accelerated bearing and gear wear). EcoLife 2 - ZF
The 6AP1700B is engineered with several advanced features that directly address the needs of public transport operators: 1. Superior Efficiency and Fuel Savings
The transmission's Electronic Control Unit (ECU) works in tandem with ZF's Topodyn software. This intelligent driveline control assesses topography (whether the bus is going uphill, downhill, or on a flat road) and vehicle load. It dynamically adapts shift points, preventing unnecessary "gear hunting" on inclines and maximizing fuel efficiency in stop-and-go traffic. Advantages for Fleet Operators zf ecolife 6ap1700b
The is a high-performance 6-speed automatic transmission specifically engineered to meet the rigorous demands of modern heavy-duty buses and coaches. As part of the globally recognized ZF EcoLife family , the 6AP1700B is defined by its 1700 Nm input torque capacity, making it a staple for city transit and intercity applications up to 32 tons. Technical Specifications & Core Features
A definitive feature of the ZF Aftermarket "B" suffix line is the high-performance integrated hydrodynamic retarder. Positioned on the transmission input side, the retarder handles up to 90% of all vehicle braking actions without engaging the foundation service brakes.
The "1700" in its name signifies its maximum input torque capacity, making it a robust choice for large vehicles: : 1,700 Nm. The 6AP1700B is used across many bus and
The "6AP1700B" designation outlines the unit's core technical architecture: forward speeds, A utomatic transmission with a P lanetary gearset, 1700 Nm of maximum input torque capacity, and a B us application focus.
Note: Exact values vary slightly by OEM customization.
| Parameter | Value | |-----------|-------| | Model | 6AP1700B | | Gear ratios | 6 forward, 1 reverse | | Max input torque | 1700 Nm | | Max input speed | 2800 rpm (diesel) | | Weight (dry) | ~290–310 kg (including retarder, oil, converter) | | Oil capacity (initial fill) | ~12–14 liters (ZF Ecofluid M or equivalent) | | Oil change interval | 60,000 km or 2 years (depending on duty cycle) | | Retarder type | Integrated primary retarder (wear-free) | | Retarder braking torque | Up to 2300 Nm at the transmission input | | TCM (control unit) | Integrated TCU (ZF-Tronic) or CAN-controlled external | Advantages for Fleet Operators The is a high-performance
The is a highly efficient 6-speed automatic transmission manufactured by ZF Friedrichshafen . It is designed primarily for heavy-duty city buses, coaches, and intercity transit vehicles . Engineering demands for modern public transport focus heavily on minimizing emissions, reducing fuel consumption, and handling high stop-and-go stresses. The 6AP1700B model provides a robust solution, managing a maximum input engine torque of 1,700 Nm . Technical Specifications Overview
: Integrated into chassis like the Scania K320UB for city bus fleets [5.4]. Maintenance and Reconditioning
The transmission features a high-capacity torque converter paired with an integrated lock-up clutch. This configuration ensures smooth launch performance under maximum passenger loads. It quickly locks up mechanical power transmission at low speeds to prevent hydraulic slipping and optimize overall efficiency. 2. TopoDyn Life Intelligent Shift Program
While reliable, some known points (especially in high-mileage city buses):