ARMY TM  5-6115-612-12 MARINE  CORPS  TM  6115-12/7 AIR  FORCE TO 35C2-3-471-1 N A VY AG-320B0-0MM-000 Section  XII. MAINTENANCE OF LUBRICATION SYSTEM 4-49. GENERAL. The lubrication system consists of an oil reservoir. (4)  Inspect  filler  hose  (3)  for damage. Replace if damaged. Oil filler/breather assembly, oil filter, oil drains, lines and fittings, oil pressure relief valve, oil cooler, and an oil pump. The purpose of the system     is     to lubricate rotating components within the gearbox. Lubrication is begun when the control panel MASTER SWITCH is placed in START, causing the starter shaft to rotate. The starter shaft rotates the oil pump shaft until the turbine shaft can take over. The  oil  pump  draws  lubricating oil from the reservoir through a small strainer. The  oil is   then   pumped through  the  oil  filter  and  into  the lubrication system where it lubricates gears and bearings on the turbine shaft and the generator shaft. NOTE If not specified in maintenance procedure, apply torque in accordance  with  table  1-1,  Torque Specifications. 4-50.  OIL FILLER/BREATHER   ASSEMBLY. The oil filler/breather assembly (figure 4-33) provides the means for checking and  adding oil. It  also provides ventilation for the reservoir. It consists of a filler cap and  oil  level  gage  and  a  breather. Maintenance consists   of inspection, replacement,  and  repair. a. Inspection. (1) Loosen turnlock fasteners and remove engine housing and plenum access covers. (2) Make sure breather vent tube is securely in place. Inspect tube for damage. Replace if damaged. (3) Tighten hose clamps (2). (5) Unscrew and remove filler cap and   oil level gage  (1). Inspect threads in cap and threaded adapter in mounting bracket (10)   for damage. Replace  damaged  components  as  necessary. (6)  Inspect mounting bracket drain tube (13) for damage or obstruc- tion. Remove obstruction or replace damaged drain tube. (7)  Inspect breather housing drain tube (5) for damage    or obstruction. Remove obstruction  or replace  damaged  breather  drain. (8) Install engine  housing  and plenum  access  covers. Secure  with turnlock  fasteners. b. Removal (1) Loosen turnlock fasteners and remove engine housing and plenum access covers. WARNING To  prevent  injury,  ensure  that battery cable plug connector is disconnected from battery before performing   maintenance. (2) Disconnect battery cable plug connector  from  battery. (3) Unscrew and remove filler cap and oil level gage (1). (4)  Loosen  hose  clamps  (2)  and remove filler hose (3). (5) Disconnect breather vent tube (4) from breather housing (9). Replace hose  clamps  (15)  and  gasket  (16)  if damaged. Change 1 4-107