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A "major overhaul" is composed of the whole engine assembly, which requires the engine to be removed from the vehicle and transferred to an engine stand. A major overhaul costs more than a top overhaul. "New limits" are the factory service manual's approved fits and tolerances to which a new engine is manufactured.
A replacement automobile engine is an engine or a major part of one that is sold alone, without the other parts required to make a functional car (for example a drivetrain). These engines are produced either as aftermarket parts or as reproductions of an engine that has gone out of production.
Time between overhauls (abbreviated as TBO or TBOH) is the manufacturer's recommended number of running hours or calendar time before an aircraft engine or other component requires overhaul. [ 1 ] On rotorcraft , many components have recommended or mandatory TBOs, including main rotor blades , tail rotor blades and gearboxes .
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Also gas pedal. A throttle in the form of a foot-operated pedal, or sometimes a hand-operated lever or paddle, by which the flow of fuel to the engine (and thereby the engine speed) is controlled, with depression of the pedal causing the vehicle to accelerate. admission stroke See induction stroke. aftermarket air brake 1. A type of brake in which the force that actuates the brake mechanism is ...
Organizational, or O-level maintenance occurs at the organizational unit level, for example by a single maintenance squadron as part of an aircraft wing. O-level maintenance is typically optimized for quick turn-around, to enhance operational availability.
An example is the engine block, in particular the cylinder engine bores, which must withstand combustion. Instead of disposing of engine blocks, remanufacturing enables re-use by coating them with plasma transferred wire arc spraying . Remanufacturing by recoating of parts is also popular in aviation and with geothermal pipe.
A six-stroke engine is one of several alternative internal combustion engine designs that attempt to improve on traditional two-stroke and four-stroke engines. Claimed advantages may include increased fuel efficiency , reduced mechanical complexity, and/or reduced emissions .