1988 FC35 fuel filters and Racor location

[birdshill123]

Bill: Here is that engineering bulletin I found:

Bruce 1988 FC35

Newer Caterpillar engines equipped with electronic fuel injection
systems previously using the BF7525 now use the Baldwin BF7633
(Caterpillar 1R0750), while the older Caterpillar engines with
mechanical fuel injection systems still use the Baldwin BF970
(Caterpillar 1P2299).

The BF7525 provided a direct replacement for the Caterpillar 1R0740
fuel filter. The 1R0740 was considered an upgrade to the Caterpillar
1P2299 fuel filter because it provided longer service life. Baldwin
Filters met the performance of the 1R0740 by designing the BF7525
with the capacity to provide 20% longer service life than the BF970.
However, the design of the BF970 fuel filter eventually evolved to
match the service life of the BF7525. The current BF970 and BF7525
utilize the same filtering element, providing equal filtration
efficiency and filter service life. With the performance of these two
filters being equal, the logical choice is to obsolete one of the
part numbers to save on inventory and manufacturing costs.

Caterpillar's introduction of the 1R0750 provided a high efficiency
fuel filter that is now used in place of the 1R0740 on Caterpillar
engines equipped with electronic fuel injection systems. Please
refer to Engineering Bulletin 98-2 for more information regarding the
high efficiency fuel filters. Since the 1P2299 is still used on
Caterpillar engines with mechanical fuel injection systems, there was
no need to continue the 1R0740 fuel filter. Therefore, Caterpillar
discontinued the 1R0740. In response to Caterpillar's action, Baldwin
Filters chose to obsolete the BF7525 and continue the BF970. This
also allows us to consolidate two identical part numbers into one and
remain consistent with Caterpillar's recommendations.

Please make note of this change in your current Baldwin Filters
Application Guide and look for these changes in your future orders of
Baldwin filters.

Performance Testing: Fuel
(SAE J905) Efficiency % Capacity (g)
BF970 90.56 13.2
1P2299 86.39 4.3


Caterpillar Fuel Filter Replacements
Caterpillar 1P2299 = Baldwin BF970
Caterpillar 1R0740* = Baldwin BF7525*
Caterpillar 1R0750 = Baldwin BF7633
*= Obsolete