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Articles about: Repair and overhaul
10 articles
Parts and contaminants · 4 min readCleaning microsurgical instruments with ultrasoundMicrosurgical tips bend or break on contact. How fine instruments are held, cleaned and checked in hospitals, repair workshops and manufacturing.
Parts and contaminants · 4 min readUltrasonic cleaning in hospital technical servicesCastors, trolley parts, kitchen filters and grilles: what a hospital's technical service can clean in an industrial tank, and the line it must not cross.
Parts and contaminants · 4 min readCleaning electronic modules after repair with ultrasoundRework flux, corrosion after liquid damage and old dust: how to clean a repaired module, what to remove first, and why solvents never go in a heated tank.
Parts and contaminants · 3 min readRemoving carbon deposits from engine valvesIntake valves on direct-injection petrol engines and exhaust valves on every engine carry hard carbon on the tulip and stem. How to clean valves once the head is off, keep each valve with its guide, and tell a cleaned valve that can be refaced from one that is scrap.
Parts and contaminants · 3 min readUltrasonic cleaning of brake calipers for reuseBrake dust, road grime, old fluid and surface rust come off a stripped caliper in one cycle, without dry brushing or blasting the bores. What is removed before the bath, the settings for cast-iron and aluminium calipers, and the steps between the bath and a caliper that is safe to refit.
Parts and contaminants · 3 min readCleaning automatic-transmission valve bodiesVarnish from old fluid and friction-material fines stick the spool valves, and the gearbox shifts late, hard or not at all. How rebuilders strip a valve body, keep every spool with its bore, and clean the channels and valves at 40 kHz without harming a single clearance.Parts and contaminants · 3 min readUltrasonic cleaning of turbocharger componentsCoked oil in the bearing housing, soot in the turbine housing, sticking vanes in a variable-geometry ring, oil film on the compressor side. How a turbo rebuilder strips and cleans each part, which metals need which bath, and what gets replaced rather than cleaned.
Parts and contaminants · 3 min readUltrasonic cleaning of cylinder heads for automotive repairCarbon in the chambers and ports, oil sludge under the cam covers, scale in the water jacket, gasket remains on the deck. How a head is stripped, which bath suits aluminium and which suits cast iron, and where cleaning sits between crack testing and valve-seat work.
Parts and contaminants · 4 min readCleaning EGR valves in an ultrasonic tankSoot and oil mist bake into a hard cake in the EGR valve and its passages. How to remove the bulk, protect the actuator, which liquid and temperature break the rest, and how to tell a cleaned valve from one that needs replacing.
Parts and contaminants · 3 min readUltrasonic cleaning of diesel injectors in the workshopCarbon at the nozzle, tar from blow-by on the body, lacquer inside. How common-rail injectors are prepared, which parts go in the bath and which never do, the liquid, temperature and time, and why the test bench has the last word.Let's find the right fit
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