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GM's Active Fuel Management [2] technology used a solenoid to deactivate the lifters on selected cylinders of a pushrod V-layout engine. GM used the Active Fuel Management technology on a range of engines including with the GM Small Block Gen IV engine family, first-generation GM EcoTec3 engine family, second-generation GM High-Feature V6 DOHC ...
The M88's primary role is to repair or replace damaged parts in fighting vehicles while under fire, as well as extricate vehicles that have become bogged down or entangled. The main winch on the M88A2 is capable of a 70-ton, single line recovery, and a 140-ton 2:1 recovery when used with the 140 ton pulley.
Yet another common problem with the 2005–2016 fourth generation V8 LS engines was a failure of the specialized lifters in engines equipped with the AFM system. While in AFM operation, the lifters would sometimes fail to come out of AFM mode and cause the engine to go into 'limp home' mode.
The unit is then checked, but no anomaly is detected by the maintainer. Consequently, the unit is returned to service with no repair performed. [1] [2] [3] If there is an underlying fault that has not been detected the unit may be returned for repair several times with no fault identified. Alternative descriptors include: [4] No fault found (NFF)
Accordingly, starting in August 1985, the 500E and 530F were rebranded as the MD 500E and MD 530F Lifter respectively. [3] Following the merger between Boeing and McDonnell Douglas, the division was briefly owned by the new entity; Boeing opted to quickly sell the former MD civil helicopter lines to the newly created MD Helicopters in early 1999.
Mean time to repair (MTTR) is a basic measure of the maintainability of repairable items. It represents the average time required to repair a failed component or device. [ 1 ] Expressed mathematically, it is the total corrective maintenance time for failures divided by the total number of corrective maintenance actions for failures during a ...
+ Overhead Cost (Inventory, handling, shipping costs) + Scrapping Cost (of part and attached parts assemblies: Sometimes assemblies cannot be disassembled and have to be scrapped altogether) + Rework (applying a new part instead) failure at manufacturer's site (worse) + Repair / Recall Costs (these are costs associated with repairing or ...
Failure mode effects and criticality analysis (FMECA) is an extension of failure mode and effects analysis (FMEA). FMEA is a bottom-up , inductive analytical method which may be performed at either the functional or piece-part level.