Transaxle Operation - Sabre 1338 Gear Technical Manual

THEORY OF OPERATION

TRANSAXLE OPERATION

Function:
The transaxle transmits power from the engine to the
drive axles and rear wheels, and provides gear
selection of five forward speeds, one reverse, and
neutral.
G
N
F
M
K
A. Input Pinion Gear
B. Intermediate Gears
C. Drive Shaft
D. Forward Drive Gears
E. Cross Shaft Bevel Gears
F. Idler Shaft
G. Spur Gear
H. Shift Fork
Forward Gears:
With engine running and clutch engaged, the transaxle
drive sheave, input shaft, and input pinion gear (A), are
driven by the engine and traction drive belt.
The input pinion gear (A), which is splined to the input
shaft and retained by a snap ring, drives the beveled
drive gear (L). The beveled drive gear turns the drive
shaft (C), and the five forward drive gears (D).
A forward gear is selected when the operator moves
the shift lever. The shift linkage moves the shift fork
(H), shift collar (O), and shift keys (I) into one of the five
intermediate gears (B). The selected gear is keyed to
the intermediate shaft (J). Power is transferred by the
intermediate gear (B) on the right side of the
intermediate shaft, to the splined spur gear (G) on the
left side of the shaft.
The spur gear (G) drives the idler gear (N), splined to
the idler shaft (F), which transfers power into the
differential ring gear (M). Power is transferred by the
2/12/97
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A
H
I
B
O
D
L
E
K
I. Shift Keys
J. Intermediate Shaft
K. Drive Axles
L. Beveled Drive Gear
M. Differential Ring Gear
N. Idler Gear
O. Shift Collar
cross shaft and bevel gears (E) to both drive axles (K)
out to the wheels and tires. The keyed drive wheels are
retained by an E-Ring.
Reverse Gears:
With engine running and clutch engaged, the transaxle
J
drive sheave, input shaft, and input pinion gear (A), are
driven by the engine and traction drive belt.
Power is transferred to the bevel drive gear (L), and
C
drive shaft (C), which drives the small drive chain
sprocket (U), the drive chain (T), and the large drive
chain sprocket (S) on the intermediate shaft (J).
When the operator shifts into reverse, the shift fork (H),
shift collar (O), and shift keys (I) become keyed to the
large drive chain sprocket (S). The large drive chain
sprocket (S) turns the intermediate shaft (J) and the
spur gear (G). The idler shaft (F) and idler gear (N) are
driven by the spur gear in reverse, which turn the
differential, drive axles, and drive wheels in reverse.
Neutral:
When the operator moves the shift lever into neutral
position, the shifter fork (H) places the shift keys (I)
under the free-floating spacer (R), allowing no power to
be transmitted into the intermediate shaft (D), which
also allows neutral to be maintained with clutch pedal
released and engine running.
GEAR POWER TRAIN
R
S
T
U
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