PAR 8-9
CHAPTER 2
DESCRIPTION AND OPERATION
Section I. DESCRIPTION AND OPERATION OF INPUT TRANSFER ASSEMBLY
8.
INPUT TRANSFER GEARING
a. Input Transfer Gearing
—
Components (fig. 373, fold-out 2)
( 1 ) A c a s t a l u m i n u m t r a n s f e r
h o u s i n g 1 2 6 e n c l o s e s a n d s u p p o r t s t he
transfer gearing. A cast aluminum flange
a d a p t e r 1 9 c o n n e c t s t h e v e h i c l e e n g i ne
flywheel housing to the transfer gear hous-
ing. The rear of transfer housing 126 is
bolted to the torque converter housing.
( 2 ) A s p l i n e d
e n g i n e c o u p l i ng
shaft 23 delivers engine torque to the gear
train. The gear train consists of a 68-tooth
drive gear 25, a 52-tooth idler cluster gear
34, a 34- and 54-tooth cluster gear 41, and
a 6 6 - t o o t h c o n v e r t e r p u m p c o v e r d r i ve
gear 67. These gears have 6-pitch teeth.
The drive gear is supported in housing 126
and adapter 19 by single-row ball bearings
24 and 27. Idler gear 34 is supported on a
spindle 5 by a double-row ball bearing 35.
I d l e r c l u s t e r g e a r 4 1 i s s u p p o r t e d o n
spindle 153 by two straight roller bearings
3 8 a n d 4 0 . C o n v e r t e r p u m p c o v e r d r i ve
g e a r 6 7 i s b o l t e d t o c o n v e r t e r c o v er
a s s e m b l y 6 8.
I d l e r g e a r 3 4 i n c l u d e s a
3 6 - t o o t h o i l p u m p d r i v e g e a r .
The
2 9 - t o o t h o i l p u m p d r i v e n g e a r 1 0 9 i s
supported by a single-row ball bearing 110.
b.
t o t he
splined
Operation of Input Transfer
Gearing (fig. 20)
(1) Engine rotation is transmitted
68-tooth transfer drive gear by a
coupling shaft.
T h e d r i v e g e a r
drives the 52-tooth gear which, in turn,
m e s h e s w i t h t h e 3 4 - t o o t h g e a r o n t he
cluster idler gear. The 54-tooth gear on
the cluster idler gear drives the 66-tooth
converter pump cover drive gear.
( 2 ) T h e c o n v e r t e r c o v e r i s t h us
driven in a direction opposite to that of
t h e e n g i n e a n d a t a s p e e d 1 . 6 4 t i m es
g r e a t e r t h a n e n g i n e s p e e d . R o t a t i o n of
the converter is clockwise, viewed from
the left side of the power train. The oil
pump driven gear is driven counterclock-
wise at 1.62 times engine speed.
9.
TORQUE CONVERTER AND
LOCKUP CLUTCH
a. Torque Converter Components
—
(fig. 373, fold-out 2)
(1) The torque converter consists
mainly of three cast aluminum elements:
pump assembly 82, stator assembly 94 and
turbine assembly 79. These, and related
minor components, are enclosed and sup-
ported by the input transfer housing 126
and converter housing 31 (fig. 374, fold-
out 3).
( 2 ) P u m p a s s e m b l y 8 2 ( f i g . 3 7 3,
fold-out 2) has radial vanes cast into one
side surface. It is machined at the center
and bolted to a steel hub 88. The hub is
supported by a single-row ball bearing 91
which, in turn, is mounted on a stationary
g r o u n d s l e e v e 2 6 ( f i g . 3 7 4 , f o l d - o u t 3 ).
The ground sleeve is rigidly mounted in
converter housing 31. The outside diam -
eter of pump assembly 82 (fig. 373, fold-
out 2) is bolted to converter cover assem-
bly 68.
(3)
The
stator
assembly
is
a
vaned reaction member. It includes stator
94, freewheel race 101, freewheel bearings
97, springs 98, cam 99 and various minor
components. This assembly mounts on the
s p l i n e d o u t s i d e d i a m e t e r o f t h e g r o u nd
sleeve 26 (fig. 374, fold-out 3). The stator
can freewheel in the direction of conver-
ter rotation but will lock up if an attempt
is made to rotate it in the opposite direc-
tion.
(4) Turbine assembly 79 (fig. 373,
fold-out 2) is a vaned casting similar to
pump assembly 82. It is riveted to a steel
hub which has internal splines which en-
gage turbine shaft 2 (fig. 375, fold-out 4).
A s i n g l e - r o w b a l l b e a r i n g 7 3 ( f i g . 3 7 3,
11
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