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Blast Tubes?
Posted: Wed Oct 22, 2014 9:58 pm
by Onewinglo
Guys, I'm looking through the 170A Parts Manual in an attempt to learn a little and I see references to "blast Tube - Oil Temperature - Left". I suspect Blast Tubes direct cooling air flow to different components. But this one appears to point straight down behind the engine and dump air to nothing. What am I missing here? I'm looking at Figure 38 - Engine Installation.
Thanks,
JP White
Re: Blast Tubes?
Posted: Thu Oct 23, 2014 1:25 am
by bagarre
Is your engine really that clean or did you wash it for the photo?
Re: Blast Tubes?
Posted: Thu Oct 23, 2014 7:41 am
by c170b53
Possibly could you be looking at the breather tube?
Re: Blast Tubes?
Posted: Thu Oct 23, 2014 3:51 pm
by Onewinglo
Aryana wrote:It blasts cooling air on the bottom of the accessory case where the oil screens are located. Left side blasts the coarse suction screen, right side blasts the fine screen output side of the pump.
Ok, that makes sense. I did not know two oil screens were involved. Are both screens cleaned as part of a routine oil change?
Thanks for everyone’s patience with a new guy!
JP
Re: Blast Tubes?
Posted: Thu Oct 23, 2014 8:29 pm
by Onewinglo
Aryana wrote: The left screen is so coarse, people joke that you'd be able to read part numbers off anything that gets caught in it.
Thats a good one for sure!
Thanks for the help.
JP