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March 2010 |
D11 IMPROVED THRUST RING DESIGN
An improved D11 Thrust Ring is now available
through the parts system. It will also be used in the assembly of new track link
assemblies.
Affected Models
All D11T/R/N and D11T/R Carry
dozer models will make use of the improved thrust ring.
Benefits
Improved oil flow, reduced
hard particles, and oil impregnation help reduce link counterbore wear, and
therefore improve track service life.
Thrust Ring Changes
Several changes have been
implemented to address the issue of link counterbore wear.
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Deeper oil grooves improve oil flow.
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Oil grooves have a small radius blend onto
face of ring.
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Oil grooves are offset 90 degrees from one
face to the other.
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Material has additional temper to soften
hard particles.
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Ring is oil impregnated to fill powdered
metal pores with oil so oil is available in pores to lubricate the faces at
assembly and in service.
Track Link Assembly PL036-G01 &
up
This running change effects
tractor production as well. D11T?s with serial number GEB00596 & up, and D11T
Carrydozers with serial number TPB00184 & up contain the new thrust rings.
Recommended Service Practices (Improved Thrust Rings)
At track Disassembly & Assembly (?Bushing Turn?), rinse the thrust rings with
clean stanisol and air dry. This allows the polypropylene facing to adhere to
the oil impregnated rings. The polypropylene facing on both faces of both thrust
rings assures track joint is free to rotate after assembly. When rebuilding
tracks that were factory built with the new thrust rings (PL036 & up), it is
recommended to use only the new thrust rings at rebuild/bushing turn.
Recommended Service Practices (Former Thrust Rings)
At track Disassembly & Assembly, if the former thrust rings are causing no wear
in to the track link, reuse the former rings. If the former thrust rings are
wearing into the link, replace the thrust ring with the improved ring. Refer to
the Undercarriage Guideline for Reusable Parts (SEBF8558) to decide reusability
of other parts.
Part Number Detail
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Recommended |
Not Oil Impregnated |
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Thrust Ring
used in production track link assembly and available for parts service
(oil impregnated) |
Roll of polypropylene facing rings ? adhere to thrust ring faces
at the time of rebuild ? to assure track joint moves freely |
Thrust Ring
? no oil with polypropylene facing rings pre-applied ? available through
parts service |
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D10T/R/N/L Former |
256-6084 |
9W-9621 (qty 335 rings) |
257-8845 |
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D10T/R/N/L New |
9W-9621 (qty 335 rings) |
352-9712 |
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Retrofitability: The 352-9711 is
a direct replacement for 256-6084.
Contact Information
Todd Borrowman
Caterpillar Inc.
Toll Free: (877) 228-2420
Core Components Division
International: (309) 578-6298
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CAT, CATERPILLAR, their respective logos, ?Caterpillar Yellow? and
the POWER EDGE trade dress, as well as corporate and product
identity used herein, are trademarks of Caterpillar and may not be
used without permission.
The information contained herein is intended for circulation only to
Caterpillar and dealer employees whose duties require knowledge of
such reports and is intended exclusively for their information and
training. Any reproduction of this release without the foregoing
explanation is prohibited.
This IRM can be viewed and downloaded electronically from the
Internet. Please refer to your marketing organization specific site
for access to the Electronic Sales Library which contains all of the
active IRMs and product support communication materials.
|
Phone: (309) 675-2013
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