Does Disassembling the Engine Count as a Major Overhaul?
2 Answers
Disassembling the engine counts as a major overhaul. Below are related introductions to major overhaul types: 1. Engine: Replacing the main internal components of the engine. This mainly includes the crankshaft, piston, connecting rod, cylinder liner, valve assembly, piston ring, piston connecting rod, valve seat ring, crankshaft connecting rod, piston ring, timing belt (some vehicles use a timing chain, which does not need replacement), engine overhaul kit, crankshaft rear oil seal, transmission front oil seal, cleaning the engine water channel, cleaning the radiator, and replacing the engine oil and filter. 2. Transmission: Replacing the main internal components of the transmission, such as gears, gear oil pump, bearings, seals, locking pins, etc. 3. Frame: Frame overhaul is required only when there is a collision or the frame breaks due to aging. Generally, it needs to be placed on a frame alignment bench for frame alignment.
Disassembling an engine depends on the situation. Last time when I got my car repaired, the mechanic said that if it's just removing the engine from the car for external repairs, such as replacing brackets or peripheral parts, it counts as minor repair. However, if the engine is disassembled to repair internal components, like grinding valves, replacing piston rings, or fixing the crankshaft, then it's considered a complete overhaul. An overhaul involves the engine's core components, and after repair, it requires at least a 2,000-kilometer break-in period, along with replacing all gaskets and bolts with new ones. If the operation isn't done properly, it might lead to oil burning or leaks in the future, so it's essential to find a reliable repair shop. I suggest having a technician inspect first to determine the scope of repair before making a decision.
