Spicer Tandem Drive Axle Dual Range & Double Planetary 34,000-45,000 lbs - Manual (Page 5)

Spicer Planetary Double Reduction Axles
Description and Operation
The Planetary Double Reduction
Tandem Axle shares its basic
design concepts and many
components with the Dual Range
Tandem. The principle variation
is the permanent engagement of
the double reduction feature. A
stationary sun gear, fixed in
engagement with the low-speed
clutch plate, replaces the sliding
clutch gear and provides continuous
double reduction operation in the
same manner as the dual range
axle when in Low Range.
Torque distribution and power flow
is same as Dual Range Gearing in
Low Range (see page 7).
Design Variations (Dual Range and Planetary Double Reduction Axles)
NOTE:
To assist in identifying the axle being serviced, here are the
major design variations within the axle series covered by this manual.
D340, 380(P)
Axle Series 400-P
Output Shaft Splines
Side Gear End 16
Output End 10
16
34
Input Shaft Splines
Input End 16
Diff. End 36
Helical Gear
7 pitch
Drive Pinion Splines
Forward Axle 10
Rear Axle 10
Drive Pinion Nut
Forward Axle 1-1/2"-18
self-locking
Rear Axle 1-1/2"-18
self-locking
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Axle Shaft &
Side Gear Splines
D340,380(P)-16
D400-P-33
D341, 381(P)
401-P, 402(P),
451-P
44
36
5 pitch
41
39
1-5/8"-18
self-locking or
slotted nut with
roll pin M42 x 1.5
after 7/1 /95
1-1/2"-18
self locking
M36 x 1.5after
D341-39
D381(P), D402(P) -41
D401-R D451-P -33
Lube Pump Drive Shaft.
The drive shaft on early
pump models is equipped with a woodruff key. On
late pump models, the key is eliminated. The drive
shaft end has two machined flats and the drive gear
mounting hole is shaped to accommodate these flats.
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