ZF 4WG-190, 4WG-210, 5WG-190, 5WG-210, 6WG-210 Ergocontrol 2 Repair stage 3 Construction Equipment Repair Instructions
These ZF 4WG/5WG/6WG Ergocontrol 2 transmissions usually live in loaders, telehandlers, and other construction gear that spend their days in dust, mud, and cold starts. This repair-stage manual helps you trace faults inside the transmission and control system instead of just throwing parts at it. Say the machine won’t shift out of second and the dash is lit up; with this, you can isolate whether it’s a solenoid, wiring, valve body, or a mechanical issue before you start tearing things apart.
Applications & Use Cases
- Track down harsh or slipping shifts by following step‑by‑step checks to inspect clutches, test pressures, and verify control signals.
- Strip and rebuild the transmission correctly, so you route seals and gaskets right and don’t have to pull it again for a missed O‑ring.
- Trace electrical faults in the Ergocontrol system, then check and align sensors and switches instead of just swapping the whole control unit.
- Bleed and test the hydraulic circuits after a repair so you can confirm proper operation before the machine goes back to the jobsite.
- Inspect wear items during planned downtime and decide what actually needs replacing, not what “might as well” get changed.
FAQ
Q: Is this a digital manual I can search on my laptop?
A: It’s typically a PDF, so you can keyword search faults, sections, and test procedures pretty easily.
Q: Can I print just a few pages to take to the machine?
A: Yes, most folks print the relevant procedures and wiring diagrams so they can mark notes and keep the main file clean.
Safety Note
Always depressurize and lock out the machine before opening any transmission or hydraulic line, because residual pressure can surprise you fast.
ZF 4WG-190, 4WG-210, 5WG-190, 5WG-210, 6WG-210 Ergocontrol 2 Repair stage 3 Construction Equipment Index:
- 4 WG 190, 4 WG 210, 5 WG 190, 5 WG 210, 6 WG 210
- Copyright
- Table of Contents
- 1 Preface
- 2 Safety
- 2.1 Signal words and symbols
- 2.2 General safety instructions
- 2.3 Product-specific safety instructions
- 2.3.1 Bolted joint
- 2.3.2 Functional test
- 3 Notes on Repairs and Assembly
- 3.1 General Information
- 3.2 Cleaning the ZF product
- 3.3 Dismantling the ZF product
- 3.4 Assembling the ZF product
- 3.5 Cleaning parts
- 3.6 Reusing parts
- 3.7 Replacing parts
- 3.8 Reworking parts
- 4 Technical Data
- 4.1 Oil
- 4.1.1 Oil filter
- 4.1.2 Oil grade
- 4.2 Transmission type plate
- 5 Settings
- 6 Tightening Torques
- 7 Workshop Equipment
- 7.1 Special tools
- 7.2 Standard tools and fixtures
- 7.3 Operating supplies and auxiliary materials
- 8 Preparatory Activities
- 8.1 Mounting transmission on assembly truck
- 8.2 Draining oil
- 9 Dismantling
- 9.1 Removing pressure filter
- 9.2 Removing the filler nozzle and the cover plates
- 9.3 Removing pressure controller and speed sensors
- 9.4 Removing temperature sensors and the breather
- 9.5 Removing output flanges
- 9.6 Removing parking brake
- 9.7 Removing and dismantling shift system
- 9.7.1 Removing filter bypass valve
- 9.7.2 Removing control unit (ECA4)
- 9.7.3 Removing pressure controllers
- 9.7.4 Removing and dismantling valve blocks
- 9.7.5 Removing duct plate
- 9.8 Removing cover plate (PTO)
- 9.9 Removing and dismantling engine connection
- 9.9.1 Removing the converter
- 9.9.1.1 Removing converter (variant with separate installation)
- 9.9.1.2 Removing converter (variant direct installation)
- 9.9.2 Removing torque converter bell housing
- 9.10 Removing the oil feed housing and pressure oil pump
- 9.11 Removing pump shaft
- 9.12 Removing cover (emergency steering pump)
- 9.13 Separating the housings
- 9.14 Removing and dismantling output shaft
- 9.15 Dismantling housing front part
- 9.16 Removing and dismantling clutches and input shaft
- 9.16.1 Removing clutches
- 9.16.2 Dismantling clutch KV
- 9.16.3 Dismantling clutch KR
- 9.16.4 Dismantling clutch K1
- 9.16.5 Dismantling clutch K2
- 9.16.6 Dismantling clutch K3
- 9.16.7 Dismantling clutch K4
- 9.16.8 Dismantling input shaft
- 9.17 Dismantling housing rear part
- 10 Assembling
- 10.1 Assembling housing rear section
- 10.2 Assembling and installing clutches and input shaft
- 10.2.1 Assembling clutch KV
- 10.2.2 Assembling clutch KR
- 10.2.3 Assembling clutch K1
- 10.2.4 Assembling clutch K2
- 10.2.5 Assembling clutch K3
- 10.2.6 Assembling clutch K4
- 10.2.7 Assembling input shaft
- 10.2.8 Installing clutches
- 10.3 Assembling housing front section
- 10.4 Assembling and installing output shaft
- 10.5 Assembling the housings
- 10.6 Mounting cover (emergency steering pump)
- 10.7 Mounting the oil feed housing and pressure oil pump
- 10.8 Assembling and mounting engine connection
- 10.8.1 Installing torque converter bell housing
- 10.8.2 Installing the converter
- 10.8.2.1 Installing converter (variant separate installation)
- 10.8.2.2 Installing converter (variant direct installation)
- 10.9 Installing pump shaft
- 10.10 Mounting cover plate (PTO)
- 10.11 Assembling and installing shift system
- 10.11.1 Installing duct plate
- 10.11.2 Assembling and mounting valve blocks
- 10.11.3 Installing the pressure controllers
- 10.11.4 Installing control unit (EC4A)
- 10.11.5 Installing filter bypass valve
- 10.12 Installing parking brake
- 10.13 Installing output flanges
- 10.14 Installing the temperature sensors and the breather
- 10.15 Installing the speed sensors and pressure controller
- 10.16 Installing filler nozzle and cover plates
- 10.17 Mounting the pressure filter
- 11 Follow-up Activities
- 12 Annex
- ZF Friedrichshafen AG, www.zf.com
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