TM 5-3805-258-24-1
P O W E R T R A IN
NOSPIN
S Y S T E M S O P E R A T I O N
DIFFERENTIAL GROUP
NOSPIN DIFFERENTIAL GROUP
1. Bevel gear. 2. Case. 3. NoSpin differential. 4. Bevel pinion.
The NoSpin differential group has a bevel gear
(1), a case (2), a NOSPIN differential (3) and a
bevel pinion (4).
The flow of power from the transmission through
the differential is:
. . . From the transmission through the rear drive
shaft to bevel pinion (4).
... From bevel pinion (4) to bevel gear (1).
. . . From bevel gear (1) to the differential housing.
. . . From the differential housing through spider
(17) to NOSPIN differential (3).
From NoSpin differential (3) to the drive axles.
. . .
When the speeds of the wheels are the same, the
NoSpin differential sends the same amount of torque
to each wheel. When the speeds of the wheels are
different, the NoSpin differential sends the torque to
the wheel that turns slower. A difference in the
speeds of the wheels is caused by a turn.
The NoSpin differential lets a wheel (axle) turn
faster than the speed of the bevel gear by not engag-
ing it with the bevel gear. For example: During a turn
with power, the outside wheel (axle) is not engaged
with the bevel gear and turns faster while the inside
wheel axle is engaged with the bevel gear and turns at
the same speed as the bevel gear. The inside wheel
gives the power which moves the machine through
the turn.
The NoSpin differential is the same on one side of
the spider (17) as it is on the other side (symmetri-
cal). The NoSpin has two springs (7) and (10), two
side gears (5) and (12), two driven clutches (6 and
11), two holdout rings (8) and (9), a center cam (15),
a snap ring (16) and a spider (17).
The inside splines of side gears (5) and (12) are
connected to the drive axles. The outside splines of
the side gears are connected to the inside splines of
drive clutches (6) and (11). The side gears send the
power through the axles to the wheels.
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