Identification and Location
Mounted on the inlet housing at the 6 o’clock position and has mounting pads for the N1 tachometer, starter generator, Fuel Control Unit, Main Oil Pump and the Oil Filter.
System Design
Nl drive is provided from a pinion gear mounted on the forward end of the compressor rotor shaft, driving two bevel gears located within the accessory gear carrier. The bevel gear located at the 6-o’clock position within the carrier, being the Accessory Gearbox drive gear, is splined internally to accept the Accessory Gearbox shaft. This drive shaft connects the gear carrier to the Accessory Gearbox through the 90 degree pinion gear which, in turn, is splined directly to the Starter-Generator drive gear. The Starter Generator drive gear provides drive to all subordinate gears located within the Accessory Gearbox housing N1 tach drive and Oil separator gear, idler gear, main Power-Driven Rotary Oil Pump drive, and Fuel Control Unit drive gear. A chip detector drain plug is installed in the bottom of the gearbox.
Chip Detector
Identification and Location
A Chip Detector is installed in the lower right side of the Accessory
Drive Gearbox.
System Design
The Chip Detector provides an indication of the presence of
ferrous particles in the engine lubrication system when a
continuity check is performed.
Disclaimer
*Basic Understanding and Best Practices – All Information & Documentation within is for Training and Guiding Purposes Only.
Any information should be cross checked with applicable OEM aircraft & maintenance Manuals.
** Any and All Training Information contained in official publications shall govern.
*** This guide may suggest and advise — BUT NOT DICTATE — Contents herein and are subject to change without prior notice. Please refer to official publication and current revisions.
