Tonanco Marine Transmissions
Supply, Service & Rebuild Support in New Zealand
Pacific Driveline provides technical support, servicing and rebuild capability for Tonanco marine transmissions operating in New Zealand.
Tonanco gearboxes are known for their robust construction and suitability for commercial marine applications, particularly in workboats and heavy-duty vessel installations. We support owners and operators requiring inspection, overhaul, troubleshooting and ongoing maintenance of these units.
Tonanco Transmission Services
Pacific Driveline offers full support for Tonanco marine gearboxes, including:
Full strip-down inspection to identify wear, clutch condition, gear tooth integrity and bearing performance.
Inspection & Diagnosis
Replacement of worn clutch packs, seals, bearings and hydraulic components as required.
Rebuild & Overhaul
Pressure checks and valve inspection to ensure proper clutch engagement and shift performance.
Hydraulic System Assessment
Diagnosis of slipping, delayed engagement, oil contamination and abnormal noise.
Troubleshooting
Support with genuine and OEM-quality replacement components where available.
Parts Sourcing
Dynamic Operational Testing
Where applicable, rebuilt Tonanco transmissions are run on our diesel engine-powered in-house test rig prior to reinstallation. This allows us to verify:
Correct forward and reverse engagement
Stable hydraulic pressures
Oil circulation and temperature
Leak-free operation
Smooth mechanical function
Supporting Legacy Marine Gearboxes
Many Tonanco transmissions remain in operation in New Zealand’s commercial fleet. As experienced marine transmission specialists, Pacific Driveline supports both current and legacy gearbox brands.
Our 25+ years of marine drivetrain experience allows us to work confidently on specialist and less common transmission models.
Tonanco Transmission Support NZ
If your vessel operates a Tonanco marine transmission and requires:
Inspection
Overhaul
Hydraulic troubleshooting
Rebuild support
Technical advice
Contact Pacific Driveline to discuss your requirements.