Initial Failure A diesel machine operating in a demanding construction environment developed abnormal fuel-system behavior and unstable engine performance. The injectors had already been replaced during an earlier repair. During subsequent inspection, metallic contamination was discovered again in ...

Customer Background A diesel repair workshop was dealing with an engine that continued to run unevenly after a set of common rail fuel injectors had already been replaced. The original complaint included unstable idle, noticeable engine vibration, and uneven combustion behavior. Because the ...

Tanzanian Agricultural Diesel Equipment Primes Normally by Hand but Loses Fuel Supply Under Load as Mechanical Lift-Pump Cam-Follower Stroke Is Investigated Case Background Agricultural diesel equipment operating in Tanzania developed gradual fuel starvation during sustained field work. When ...

Canadian Heavy Diesel Engine Develops Repeated Pre-Turbo Exhaust Leakage After Gasket Replacement as Manifold Stud Clamping and Flange Contact Are Investigated Case Background A heavy diesel engine operating in Canada developed repeated exhaust leakage at the manifold-to-cylinder-head interface. The ...

South African Wheeled Equipment Shows Weak Implement Hydraulics After Steering Events as Priority-Valve Spool Return Is Investigated Case Background Wheeled construction equipment operating in South Africa developed a hydraulic complaint linked directly to steering activity. Before steering, loader ...

Singapore Standby Diesel Generator Shows Rising Alternator Temperature and Engine Load Despite Normal Engine Cooling as AVR Overexcitation Is Investigated Case Background A standby diesel generator operating in Singapore completed basic starting and engine-performance checks normally. During ...

Spanish Commercial Diesel Vehicle Develops Load-Dependent Clutch Slip After Recent Clutch Replacement as Rear-Main-Seal Oil Contamination Is Investigated Case Background A manual-transmission commercial diesel vehicle operating in Spain developed clutch slip shortly after clutch replacement. At low ...

Norwegian Workboat Develops Rising Stern-Bearing Temperature at Cruise Despite Acceptable Shaft Alignment as Cutless-Bearing Water Supply Is Investigated Case Background A Norwegian workboat developed a rising temperature near its stern-bearing area during sustained cruise. Propeller-shaft alignment ...

Polish Heavy Diesel Truck Builds Air Pressure Slowly Despite a Clear Discharge System as Air-Compressor Intake-Valve Sealing Is Investigated Case Background A heavy diesel truck operating in Poland developed slow pneumatic reservoir charging. The compressor was mechanically driven correctly, the ...