Spicer IPL: Tandem Drive Axle Illustrated Parts List - All Non-Current Models - Manual (Page 3)

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On August 1, 1981, Spicer converted these axles to a new configuration which includes redesign of axle diff. carriers, taper roller input shaft bearing
and involute side gear and axle shaft spline configuration. These design changes add strength and shock load capacity to differential components. For
convenience, all early-style parts are listed in this publication and remain available through the Spicer service system. These axles can be identified by
their carrier casting number (refer to drawings below):
Please note use of these carrier casting numbers in the parts lists to lead you to the correct part number.
Exploded View and Parts Lists for the following axle models:
NOTE: ONLY MODELS PRODUCED AFTER 1976 ARE COVERED
IN THIS PUBLICATION. MODELS PRODUCED PRIOR TO 1976
CAN POSSIBLY BE SERVICED BY UPGRADING TO CURRENT
PRODUCTION. CONTACT YOUR O.E.M.
SOME OF THE MODELS COVERED IN THIS PUBLICATION ARE
OFFERED AS UPGRADED ASSEMBLIES- SEE SPICER CARRIER
EXCHANGE HANDBOOK EA-70.
SINGLE REDUCTION TANDEMS:
FORWARD: DS440-P, DS460-P, DS480-P ............................................... 4
REAR: RS440, RS460, RS480 ............................................................... 10
DUAL RANGE TANDEMS:
FORWARD: DT440-P, DT460-P, DT480-P.................................................14
REAR: RT440, RT460, RT480, RT485 .................................................... 20
PLANETARY DOUBLE REDUCTION TANDEMS:
FORWARD: DP440-P, DP460-P, DP480-P, DP485-P, DP550, DP580-P,
DP650-P .................................................................................................14
REAR: RP440, RP460, RP480, RP485, RP550, RP580, RP650 ............ 20
PLANETARY DOUBLE REDUCTION TANDEMS:
FORWARD: (with thru-shaft and no inter-axle differential) TP550, TP580,
TP 650 .................................................................................................... 24
REAR: (with stub-staft, high entry) SP550, SP580, SP650 .................... 24
Pinion Bearing Spacers ......................................................................... 12
Tandem Configurations ...........................................................................13
Drive Pinion and Ring Gear Sets ........................................................... 23
Differential Lockout (Forward Axle) ....................................................... 29
Axle Shift System .................................................................................. 30
Air Shifter Valve ...................................................................................... 31
Piston Air Shift System ......................................................................... 32
Axle Housings ........................................................................................ 34
Axle Model No. Identification
Table of Contents
Axles built
after
August 1,1981
w/Carrier Casting
No.110500 Axles built
before
August 1,1981
w/Carrier Casting
No.103530