Click here to make tpub.com your Home Page

Page Title: AGB GEAR TRAIN TURNS UNEVENLY (BINDS) WHEN TURNED BY HAND, LOW PRESSURE COMPRESSOR RUBS OR BINDS WHEN TURNED BY HAND AND THER...
Back | Up | Next

Click here for thousands of PDF manuals

Google


Web
www.tpub.com

Home


   
Information Categories
.... Administration
Advancement
Aerographer
Automotive
Aviation
Construction
Diving
Draftsman
Engineering
Electronics
Food and Cooking
Logistics
Math
Medical
Music
Nuclear Fundamentals
Photography
Religion
   
   

 

TM 9-2835-255-34
3 - 2 . TROUBLESHOOTING - CONTINUED
I
I
a. ACCESSORY GEARBOX (AGB) AND
(8) ES-8.  AGB GEAR TRAIN TURNS
HIGH PRESSURE COMPRESSOR -
UNEVENLY (BINDS) WHEN TURNED BY
CONTINUED
HAND, LOW PRESSURE COMPRESSOR
RUBS OR BINDS WHEN TURNED BY
HAND AND THERE ARE METAL CHIPS
I N THE OIL PUMP TO OIL COOLER
FLUID FILTER.
This  section  contains  troubleshooting  to  locate  and  correct  the  cause(s)
of binding in the AGB gear train when turned by hand, rubbinq or binding
in the low pressure compressor when turned by hand, and metal chips in
t h e  o i l  p u m p  t o  o i l  c o o l e r  f l u i d  f i l t e r .  The AGB is coupled to the high
pressure  compressor  in  the  forward  engine  module  through  a  gearshaft.  If
there is damage to the high pressure compressor, forward engine module
position  No.  3,  4,  11 or 12 bearing, or AGB gears and/or bearings,
binding will be felt when the AGB gear train is turned by hand. The low
pressure  compressor  is  mechanically  coupled  to  the  low  pressure  turbine
rotor in the rear engine subassembly.  If there is damage to the low
pressure  compressor  or  position  No.  1 or 2 bearing in the forward engine
module,  o r  t o  t h e  l o w  p r e s s u r e  t u r b i n e  r o t o r  o r  p o s i t i o n  N o .  5  b e a r i n g
in  the  rear  engine  subassembly,  binding  will  be  felt  when  the  low
pressure  compressor  is  rotated  by  hand.  The  lubrication  system  delivers
h o t  o i l ,  scavenged from bearing packages throughout the engine, through
a  fluid  filter,  to  the  engine  oil  cooler.  The  cooled  oil  is  then
returned  to  the  oil  tank.  Whenever  metal  chips  are  generated,  the  fluid
filter  will  catch  and  retain  most  of  the  chips.  The  art  on  the  following
pages provides an overview of the systems described above. Refer to
these  pages  along  with  in-text  art  while  performing  troubleshooting.
3-56
Change 5

Privacy Statement - Press Release - Copyright Information. - Contact Us

Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business