Locate original Part Number, Illustration

[MoonlightVFR]

I am looking in the wrong place


Subject is original air filter part number and illustration for 1954 Cessna 170B w Cont 0300 engine.

Looking in IPC dated Sept 1, 1956. Nothing

I want to see original factory illustration and part numbers for air filter and the fastener that hold air filter to air box.

Aircraft currently has the Brackett air filter installed.

What is the right place to research part number?

[n2582d]

From the TCM IPC:

Air Filter.jpg

Parts list.jpg

[n2582d]

What a stud! Aircraft Spruce wants over $300 for four of those camlock studs and cross pins.

[sfarringer]

I use the Donaldson P10-7172.

[n2582d]

I've always used Brackett filters. Donaldson makes a good sales pitch here though.

[DaveF]

I've always used Brackett filters. Donaldson makes a good sales pitch here though.

For the dirt argument, maybe, if you live in a dusty environment, and depending on what they mean by "life of the filter". Not much of an argument based on pressure drop. An O-300 turning 2500 rpm draws about 200 cfm, and according to the plot the Donaldson filter has about 1" H2O less pressure drop than the Brackett. One inch of water column is 0.2%, or 0.08" Hg. Not too compelling.

[GAHorn]

The problem most folks face when using Brackett filters is.... they fail to squeeze out the excess wettant before installation.

Place the foam filter between two stacks of paper towels, and (this is the tricky part), ... grab the wife's pastry-roller / rolling pin and squeeze out all that sticky wettant before installation. (I guess a 3" pipe would also work, or maybe a rattlecan paint can, etc.)

Do not simply remove the filter from the plastic bag and install it! Get rid of all that excess wettant.

[DaveF]

"Wettant", is that what it's called? I thought it was called "goo".

[lowNslow]

We switched to the Donaldson filter for our glider club towplane and it is working much better. The problem with the Bracketts on a dirt strip is they clog up very fast as they have far less surface area then a pleated filter. I still use a Brackett on my 170 as other then the dirt glider field I am on paved runways.