Spicer Carrier Design Modifications to Dana 34-44K - Manual (Page 2)

Carrier Mounting Flange Design Change
DESIGN CHANGE: The nominal thickness of the carrier to housing flange has been increased on both the
forward and rear-rear axles. This change will require the use of new fastener parts. A new (45mm) capscrew
(P/N 130836) has been released. Additionally, a much thicker boss has been added to the flange at the 12:00 &
6:00 o’clock positions. These new thicker flange bosses will require an even longer capscrew (P/N 130837) . A
thicker and larger diameter flat washer (P/N 130877) has also been released as part of this upgrade. The existing
stud (P/N 127641) and nut (P/N 127567) will continue to be used. Refer to page 5 for specific washer, capscrew
and stud details and locations.
‰ ‰ ‰ CARRIER EXCHANGE ASSEMBLIES – Any new Carrier Exchange Assembly produced with the new thick
flange carrier will include a carrier-to-housing fastener hardware kit
(P/N 512087) . The carrier exchange part
numbers will not change, as the new design carriers will be implemented for service as they are released in
production.
NOTE: Because of the popularity of the Dana Carrier Exchange program, stock levels of the older design carriers outlined in this bulletin at OEM
PDC’s and DEALERSHIP’S are numerous. If you have a vehicle that is originally built with a “new style” thick flange carrier, it can be serviced
with an “older style” Carrier Exchange Assembly. The repairing dealer must simply make sure to use the correct axle housing hardware parts
when installation is done. In this case it will be necessary to use an “Old Style” housing fastener hardware kit
(P/N 511600) .
Carrier Fastener Change
New Dana “Thick Flange” Carriers Require
New Longer Style Capscrews at the 12:00
& 6:00 o’clock Positions.
DESIGN CHANGE: New fasteners were released for the thick flange carriers as described above. Shown
below are the new fastener parts along with a “fastener replacement” chart for reference. A new “Axle Housing
Hardware” kit
(P/N: 512087) has been released for use with all “thick flange” design carriers.
New Wider & Thicker Flat
Washer – DANA P/N 130877 New Longer Capscrews –
DANA P/N’s 130836-(70mm),
130837-(45mm)
IMPORTANT! Dana does not recommend the mixing of various designs carrier-to-housing capscrews on the same assembly. Whether mixing
or not, torques must be measured using a calibrated torque wrench. Failure to re-torque bolts and nuts to proper specifications may lead to
carrier to housing leaks and possible component damage.
This bulletin contains product information.
Dana Corporation is not committed or liable for canvassing existing product.
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