Spicer Tandem Drive Axle Dual Range & Double Planetary 34,000-45,000 lbs - Manual (Page 2)

Spicer Axle Service and Maintenance Instructions
Tandem Drive Axles
Dual Range and Planetary Double Reduction Gearing
Introduction
Dana Corporation, Axle & Brake Division, presents this
publication to aid in maintenance and overhaul of Spicer
tandem drive axles.
,
Service and Maintenance instructions cover Spicer Dual
Range (2-Speed) and Planetary Double Reduction Tandem
Axles. Instructions are applicable to both gearing types
unless specified otherwise.
Five basic axle series are included in this book. Their design
is common with differences in load capacity and two gearing
types.
Load
Model Numbers
Capacity Planetary
(lbs.) Dual Range Double Reduction
34,000 DT340, DT341 DP340, DP341
38,000 DT380(P) DP380(P)
38,000 * DT381(P) DP381(P)
40,000 DT400-P, DT401-P DP400-P, DP401 -P
40,000 DT402(P) DP402(P)
45,000 DT451 -P DP451-P
The suffix letter “P” in the Model No. indicates the axle
is equipped with a gear-driven Lube Pump, designed to
provide additional lubrication to the inter-axle differential
and related parts.
Instructions contained herein are applicable to all axle models
unless specified otherwise.
Typical 3PICER Tandem Drive
Axle (Dual Range illustrated).
Design Variations:
Two design variations of tandem
axles are included in this manual.
The major difference is in the shaft
sp line design. Refer to page 5 for
deails.
For brake information and axle mounting suspension
*NOTE: DS381 (P) axles manufactured
systems, refer to pertinent truck manufacturer’s literature. after April 1985 are rated at 40,000 lbs,
Contents
Description and Operation
Gearing and Torque Distribution
L u b r i c a t i o n
Cleaning, Inspection, Replacement
Adjustments
• Wheel Bearings
•Adjust Input Shaft End Play
•Pinion Bearing Preload
•Differential Bearing Preload and
Ring Gear Backlash Adjustment
Ring Gear and Pinion Tooth Contact
Fastener Tightening Specifications
Rear Axle Differential
Carrier Replacement
Forward Axle Differential
Carrier Replacement
Power Divider Replacement
Power Divider Overhaul
•Remove Power Divider
from Differential Carrier
•Disassemble power Divider Cover
•Disassemble Inter-axle Differential
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Disassemble Output Shaft
Assemble Output Shaft
Assemble Inter-axle Differential
Assemble Power Divider Cover
Install Power Divider on Diff. Carrier
Adjust Input Shaft End Play
Differential Carrier Overhaul
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Disassemble Differential Carrier
Disassemble Drive Pinion
Disassemble Wheel Differential
Assemble Wheel Differential
Assemble Drive Pinion
Forward Axle- Install Pinion
Forward Axle - Install Helical Gear
Forward Axle - Install Differential
Assembly in Carrier
Rear Axle - Install Pinion and
Differential in Carrier
Misc. Torque Fastening Chart
DuaI Range Axle Shift System
*Service Bulletin Supplement
(Checking Input Shaft End Play — Axle Models with Thrust Button
2 Price $3.50