• Home
  • Download PDF
  • Order CD-ROM
  • Order in Print

Home > Ordnance Documents and other related manuals > > The Transmission.
Figure 1-10. 6553TDiesel Engine (Cast Iron block)
Figure 1-11. Model X200 -4 cross drive Transmission

Introduction To The M113a3 Armored Personnel Carrier
Page Navigation
  8    9    10    11    12  13  14    15    16    17    18  

3.
The Transmission.
The M113A3 personnel carrier has an Allison X200-4 Hydromechanical
Cross  Drive  Transmission.
The  transmission  has  a  hydrostatic
steering system, its own oil system and filters (separate from the
engine), and a separately mounted oil cooler.  It uses constant mesh,
spur type, and planetary gearing and has four forward ranges and one
reverse  range.
The  transmission  also  incorporates  an  infinitely
variable,  hydrostatically  controlled,  differential  steering  system
and hydraulically controlled, multiple wet plate braking system.  The
transmission couples to the rear of engine, at the flywheel end, and
receives engine power via the torque converter.  Through its design,
the  X200-4  transmission  will  NOT  change  direction  (forward  or
reverse) when the vehicle is moving at speeds above four miles per
hour.
This  prevents  damage  to  the  transmission  if  the  operator
accidentally changes the transmission controller to a reverse or a
forward range when the APC is moving.  The X200-4 transmission has an
input horsepower of 265 at 2800 rpm.
The A2 configuration of the APC has an Allison TX 100-1 transmission.
This transmission is a powershift, torque converter, planetary gear
transmission.
This transmission consists of a compact unit which
mounts on the vehicle's engine to form a power pack.
In the A2
configuration, the transfer gear case and torque converter transfers
engine power to the transmission.
From the transmission, power is
then transferred to the differential and on to the final drives.  The
TX 100-1 transmission has a net input of 215 horsepower at 3825 rpm.
The  steering  and  braking  for  the  A3  configuration  is  controlled
through  linkages  connected  to  the  X200-4  transmission  while  the
steering and braking for the A2 configuration is controlled through
the steering control differential.  The use of the X200-4 cross drive
transmission eliminates the use of the transfer gear case, the TX100-
1 transmission, and the steering control differential.
Figure 1-11
provides an illustration of the X200-4 transmission and figure 1-12
illustrates the TX 100-1 transmission.
13
OD1712






Western Governors University

< Previous Page
Index ^
Next Page >

Privacy Statement
Press Release
Contact

© Copyright Integrated Publishing, Inc.. All Rights Reserved. Design by Strategico.