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Antique Caterpillar Machinery Owners Club
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D6 9U Repairs and Upgrades
D6 9U Repairs and Upgrades
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Posts: 75
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Thank you received: 11
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3 years 9 months ago #224185
by Xtremist
according to my parts book, the plungers in the fuel pump for a 9u d6 are the same as a 7u d4 ?! seems kind of odd seeing as how the pump housing is a lot smaller on a 4 then a 6....?
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3 years 9 months ago #224213
by edb
Hi Team,
the D315(D4) is a 4 cylinder version of the D318(D6) so all basic parts are the same where applicable for the number of cylinders required.
Cheers,
Eddie B.
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Xtremist
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3 years 8 months ago #224956
by Xtremist
Is there an air intake upgrade / retro that uses a canister filter for these old 9u's ? or is there a cannister that anyone would suggest, i can build the piping to and from it
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3 years 8 months ago #224972
by Ray54
There was a Cat update of a dry air cleaner. Depending on how much you want it genuine Cat many air cleaners have been adapted.
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8C 361
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3 years 8 months ago #224973
by dpendzic
that Leeds to the question--which type of filter is better--oil bath or element?
D2, D3, D4, D6, 941B, Cat 15
Hancock Ma and Moriches NY
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3 years 8 months ago #224974
by Rome K/G
I always thought that dry type air cleaners let engines breath better than pulling oil up through the air cleaner housing on the oil bath type.
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3 years 8 months ago #224977
by dpendzic
I was thinking that the oil substrate would tend to have more particles stick to it than a paper element--but it would have to be cleaned more often than the paper as the paper has folds and more surface area?
D2, D3, D4, D6, 941B, Cat 15
Hancock Ma and Moriches NY
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3 years 8 months ago #224986
by Xtremist
i like the look of the dry canister filter systems with the precleaner up top above the hood....and since there isnt a pony motor in this machine anymore i figured i could use that space to mount the canister......but i need to figure out what to use for a canister haha. as far as which is the better system, all the newer stuff uses the dry system doesnt it, i would guess it would maybe depend on the quality of the filter thats in there as to how much it collects....?
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3 years 8 months ago #224987
by D4Jim
There have been a lot of studies and even more opinions as which is better, oil bath or dry. Most studies show very little difference in the percentage of dust particles removed by either the oil bath or the dry filters. A major advantage of the dry filter is that as it becomes plugged it affects engine performance without losing filtering ability whereas the oil bath filter may have dust/dirt saturation and even oil loss without affecting performance leading one to think everything is OK until it is too late. It really boils down to how much time one wants to spend making sure the engine is breathing clean air. There are several other factors that can be considered but the clean air seems to be the major one. (Dry filters can use sensors for condition, oil can get into turbo if used with oil bath etc, etc.)
ACMOC Member 25 years
D47U 1950 #10164
Cat 112 1949 #3U1457
Cat 40 Scraper #1W-5494
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D6 9U Repairs and Upgrades
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