PAR 1
CHAPTER 1
INTRODUCTION
Section I. GENERAL
1.
SCOPE
a . O v e r a l l C o n t e n t s . T h i s t e c h n i c al
m a n u a l c o n t a i n s i n s t r u c t i o n f o r D i r e ct
Support and General Support maintenance
of
the
A11ison
Model
XTG
411-2A
and
XTG 411-4 power trains (figs. 1 through
4 ) . I n c l u d e d a r e d e s c r i p t i o n s o f c o m p o-
nents and procedures for disassembly, in-
spection, repair, rebuild and assembly of
the complete power train.
b . Chapters 1 through 4. General in-
formation, description and tabulated data
are given in Chapter 1. Chapter 2 contains
more detailed description and explanation
of the operation of the components and
t h e h y d r a u l i c s y s t e m , a n d t r a c e s t h e
torque paths. Chapter 3 deals with parts,
special tools and equipment, including tool
lists.
Chapter 4 covers troubleshooting
p r o c e d u r e s , i n c l u d i n g a t r o u b l e s h o o t i ng
chart.
c. Chapter 5 for Repair and Rebuild
—
(1) Chapter 5 covers disassembly
and assembly of the power train and re-
build of subassemblies.
(2) The disassembly and assembly
instructions are presented in a pictorial
step-by-step manner, designed to portray
g r a p h i c a n d e a s y - t o - f o l l o w i n s t r u c t i o n s.
There is a picture in correct sequence for
every main step in the disassembly and
assembly procedures. In addition to figure
number, each pictorial step is identified
by its step number.
Other sections of the
m a n u a l a r e c o m p i l e d i n t h e p a r a g r a p h-
outline style.
d . Chapter 6 for Standards. Chapter
6 covers repair and rebuild standards and
includes a tabulation of wear limits.
C h a n g e 2
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