Spicer 23080S User Manual
Spicer
Drive Axles
ABIB-0107R2
Information Bulletin
Bulletin Type:
Topic:
Component Upgrades in 23080S Single Drive Axle Models
Affected Models:
In December 1999, the models listed above were built with upgraded parts not shown in parts IPL AXIP-0031. The
change was implemented with models having serial numbers beginning with H99277xxxx. These models have several
improved components with design changes that affect replacement service parts. The product improvements detailed
below include several new high performance bearings and the use of a different but common wheel differential spider.
INNER PINION BEARING UPGRADE:
The most notable change is to the inner pinion bearing. The bearing profile has changed and therefore requires the use
of a new cage & cup assembly. The new cage & cup assy part number is 129854 (cage#129853); this also contains the
new bearing cup 129848. This cage/cup can only be used with the new inner pinion bearing 129847 because of the
bearing profile design. For serviceability reasons, a Cage & Cup Conversion Kit 510871 was released and now replaces
the old cage & cup assembly 127843. The cage/cup assembly (cage#127844) is no longer available for service.
Diff. Bearing Cone R.H Pinion Pilot Bearing
Parts/Service Information
21080S/D/A, 23080S/D/A, 26080S/D/A
Inner Pinion Bearing
Revised Edition – July 2006
Pinion Bearing Cage
®
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INFORMATION BULLETIN ABIB-0107R2 - Component Upgrades in 23080S Single Drive Axle Models
DIFF CARRIER BEARINGS, PILOT BEARING AND DIFF SPIDER UPGRADE:
Other bearing upgrades include the 129565 Diff Bearing Cone (plain half), 129566 Diff Bearing Cup (plain half) and
129947 Pinion Pilot Bearing. To the eye these parts will be visually identical to the previous design bearing parts. These
particular bearing parts are completely interchangeable to the previous components. Use the vendor identification
number stamped into each part to identify them when replacing them in service. The wheel differential spider 108141 has
replaced the old wheel differential spider 210572. The parts are dimensionally the same but the 108141 is made of higher
strength steel.
NOTE: THE NEW BEARINGS, ALTHOUGH DIFFERENT IN PROFILE AND DURABILITY, ARE TOTALLY INTERCHANGEABLE WITH THE PAST
PRODUCTION PARTS. COMPONENT MIXING CAN BE DONE WITHOUT DETRIMENT, BUT THE LONG TERM BENEFITS FOR THE MOST
DEMANDING APPLICATIONS MAY NOT BE FULLY REALIZED IF THE UPGRADED PARTS ARE NOT USED.
Shown in the charts below are the BEFORE 12-1-99 and AFTER 12-1-99* component part numbers. Also shown in the
chart are the vendor identification numbers located on the various parts that can be used to identify them.
PART LISTING: BEFORE 12-1-99
Old Part-No. Vendor Number
Description Before 12-1-99* on Part Notes
Diff Bearing Cup (RH) 9803 493 Plain Half
Diff Bearing Cone (RH) 27813 497 Plain Half
Inner Pinion Bearing Cone 126286 H914841
Cage & Cup Assy 127843 N/A cast# 127844 - NLA (Order: 510871)
Inner Bearing Cup - Cage 126287 H914811
Diff Spider 210572 210572 210572 is NLA
Pinion Pilot Bearing 127826 BS5000016 127826 is NLA
NTN-Bower RU-9008-UM
PART LISTING: AFTER 12-1-99*
New Part-No. Vendor Number
Description After 12-1-99* on Part Notes
Diff Bearing Cup (RH) 129566 NP533133 Plain Half
Diff Bearing Cone (RH) 129565 NP380290 Plain Half
Inner Pinion Bearing Cone 129847 NP723977
Cage & Cup Assy 129854 N/A Includes 129848 cup (Order: 510871)
Inner Bearing Cup - Cage 129848 NP751735
Diff Spider 108141 108141 Replaces 210572
Pinion Pilot Bearing 129947 MU61308UMW105 Replaces 127826
*NOTE 1: The date is used as a reference, some differentials produced after this date may
have been built with the original design parts. Verify replacement parts by vendor numbers on
the parts.
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