Cooling
Kubota Heat Exchanger — Before & After
Heat exchanger material build-up and resurface, followed by a full rebuild.
Marine cooling · Manly, Brisbane
Marine Heat Exchanger Servicing in Brisbane
Seadog Marine cleans, inspects, pressure tests and repairs marine engine heat exchangers in Manly, Brisbane. We investigate restrictions, corrosion and leaking seals that affect cooling performance.
Workshop
Manly, Brisbane
Service area
Brisbane & South East Queensland
Approach
Inspect · explain · repair
The service
Good cooling work starts with finding the real cause.
Clear findings and practical options, grounded in the condition of your component and the wider system.
A marine heat exchanger transfers heat from the engine's coolant to the raw water circuit. Scale, salt deposits, tube damage and deteriorated seals can reduce heat transfer or create leaks. We inspect the component and its connections to understand the fault.
Our heat exchanger work includes end caps, O-rings, sealing faces, core restriction, tube condition and anode checks. Pressure testing helps identify leak points; repair recommendations are based on the condition found, rather than assuming cleaning alone will solve the problem.
Recent workshop examples include a Kubota heat exchanger rebuild and a leaking Yanmar heat exchanger repair that was pressure tested before returning to service. Our Manly workshop serves Brisbane and South East Queensland, with on-site work where access permits.
Workshop scope
Work included
- Core cleaning and restriction assessment
- Tube condition, scaling and corrosion inspection
- End caps, O-rings and sealing-face checks
- Anode condition and corrosion patterns
- Pressure testing to identify leak points
- Hose, clamp and connection checks
What to look out for
Common symptoms
These signs can point to a cooling fault. Inspection helps identify the cause.
- Rising engine temperature at cruise
- Salt deposits or weeping around end caps
- Repeated coolant alarms or unexplained coolant loss
- Reduced raw water flow
- Overheating after a longer run
From the workshop
Real jobs. Real components.
Examples of the hands-on work behind this service.
Cooling
Leaking Yanmar Heat Exchanger Repair
Heat exchanger leak repaired — pressure tested and returned to service.
Straight answers
Questions vessel owners ask.
Share what you know about the engine and the problem. We can help work out the next step.
Does a heat exchanger clean fix every overheating problem?
No. Restricted flow, worn pumps, thermostats, hoses and other cooling circuit faults can also cause overheating. We offer full cooling system diagnosis when the cause is unclear.
Why pressure test a marine heat exchanger?
Pressure testing helps identify leaks in the core, seals or connections that may not be obvious from an external inspection. We use the findings to guide repair recommendations.
Do you repair leaking heat exchangers?
We inspect and repair heat exchangers where their condition allows it. Existing workshop examples include a leaking Yanmar heat exchanger repair and a Kubota heat exchanger rebuild.
How often should a heat exchanger be serviced?
Follow the engine manufacturer's maintenance schedule and consider operating conditions, service history and inspection findings. Ask us to review your engine model and current condition rather than relying on a universal interval.
Talk through your cooling issue
Start with the details you have.
Tell us the engine model, symptoms and vessel location. We’ll discuss an appropriate next step.