Spicer RST40 User Manual
Spicer
®
Drive Axles
AB
Information Bulletin
Bulletin Type: Parts Information
Revised Edition
(Updated 1.10.08)
Topic: RST40 Product Design Changes
Affected Models: RST40, RST41
In April of 2005 Dana made major design changes to the RST40 and RST41model axles. The design changes impact
service parts and the information contained in this bulletin will help show the design variations between the original design
and the latest design. Some of the parts in areas that were changed are common to the popular RS404 family axles.
These parts are readily available at PDC’s and OEM Dealerships.
The areas of impacted area of design change are outlined below and detailed in specific pages of the bulletin.
SUBJECT GROUP: BULLETIN PAGE
INNER PINION BEARING page 2
PINION BEARING CAGE AND SHIMS page 2
GEAR/PINION KITS page 3
RING GEAR NUTS & BOLTS page 3
CARRIER & CAP page 4
CARRIER-TO-HOUSING FASTENERS page 4
RST40 SERVICE PARTS LISTING – (OLD vs. NEW) page 5
This bulletin contains product information.
na Corporation is not committed or liable for canvassing existing product.
Da
IB-0510R3
1
PINION BEARING CAGE CHANGE:
Original Design Cage Shims:
Dana P/N: 107567, 107568, 107569, 107570, 107571
RST40 Product Design Changes – ABIB-0510R3
PINION DESIGN CHANGE:
NEW INNER PINION BEARING:
OLD INNER PINION
NO CHANGES TO
DRIVELINE YOKE!
Note 1:
INNER PINION BEARING CHANGE:
Shown below are specific changes that impact the INNER PINION BEARING and PINION BEARING CAGE. The new
production pinions have been redesigned and requires the use of a new inner pinion bearing. As noted in the chart on
page 3 of this bulletin, the inner pinion bearing is now included with the Spicer service gear sets for these models.
Newer production RST40, RST41 models are built with a new design drive pinion that now
has a step design and requires the use of the 129562 inner pinion bearing. Do not use the
old 45460 Inner Pinion Bearing with this gear set – it will not reassemble correctly.
BEARING:
Spicer #045460
(industry# 72200C)
No Longer Used after
ST
April 1
2005.
Spicer #129562 (industry# NP523912)
PINION BEARING CAGE CHANGE:
The new RST40 carrier and cap design is new and unique as explained on page 4 of this bulletin. The mating pinion-
earing cage, capscrews and shims were all upgraded to that which is common to the RS404. The carrier’s made after
b
April 1, 2005 (casting#130945) have metric threaded pinion bearing cage holes, and require the use of the 210115
capscrew. Additionally one common cage/cup is used for all ratios. Refer to the part numbers in the chart below.
•••• New Common Design Cage/Cup: Dana P/N: 129768 – Casting#127481C (all ratios)
•••• New Common Design Cage Capscrew: Dana P/N: 210115 – 40mm – M14X2-6G Thread
•••• New Common Cage Shims: Dana P/N: 127595, 127596, 127597, 127598, 127599
Original Design Cage/Cup: Dana P/N: 128373 – Casting#127038R (3.55 & 3.70 ratios) Note 1
Original Design Cage/Cup: Dana P/N: 128372 – Casting#107495R (all other ratios)
Original Design Cage Capscrew: Dana P/N: 113325 - 1.50” – 9/16”-12 Thread
When changing any BEFORE April 2005 RST40 units having a 3.55/3.70 ratio, or replacing any original
3.55/3.70 gearing with the NEW 3.55/3.70 gear sets, the correct Cage/Cup Assy must be used. The NEW
Pinions were changed in overall length affecting the stack up in these ratios, to correct this; you must use the
128372 cage/cup assy. No other ratios are affected.
is bulletin contains product information.
Th
Dana Corporation is not committed or liable for canvassing existing product.
2
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