Where is my driver's side ping tank drain?

John_Canfield · 05-30-2006, 02:28 PM

Since we are supposed to pull the drain lanyard on the ping tanks twice a year, I was a good boy and found/pulled two lanyards on the starboard (passenger) side right above the tire. I'll be darned if I can find one on the port side - there are THREE lanyards aren't there?

John_Canfield · 05-30-2006, 02:28 PM

Since we are supposed to pull the drain lanyard on the ping tanks twice a year, I was a good boy and found/pulled two lanyards on the starboard (passenger) side right above the tire. I'll be darned if I can find one on the port side - there are THREE lanyards aren't there?

Motorhome05 · 05-30-2006, 02:37 PM

What are ping tanks and why does one need to pull the lanyard twice a year?

John_Canfield · 05-30-2006, 03:03 PM

They are air accumulation tanks used on vehicles with air brakes. There are three on my coach consisting of two physical tanks. Of the two tanks, one is divided into two discrete sections.

Like any air compressor/tank, as you compress air it heats and condenses moisture. On our chassis, Freightliner includes an air dryer and moisture ejector but they are not always 100% effective in keeping moisture out of the system, especially if the dryer is shot. So when one pulls the drain lanyard, you eject any moisture that has managed to get all the way to the ping tank.

tomsm · 05-30-2006, 03:29 PM

John,
All three of mine were still coiled up and taped to their tank when it was delivered to me. At first Freightliner service they unrolled them and led them to the proper place. You may get to skinny under your unit and see if you can find the 3rd one. Seems like FL should have uncoiled yours by now though...

cbeierl · 05-30-2006, 03:51 PM

Hi John,

All three of mine are right together behind the right front wheel. I don't see anything on the left hand side.

RLS · 05-30-2006, 06:03 PM

Hi John, On my unit there are 2 cables behind the right front tire and 1 cable in front of the tire.

Rapid Ray · 05-30-2006, 06:33 PM

You guys with diesels have all the fun.

ichn2go · 05-31-2006, 12:20 AM

John, finding them is tough on us old guys.

CHIPPYSGT · 05-31-2006, 03:51 AM

John,

All 3 in the right front wheel well coiled up. Two to the rear of the tire and one forward.

John_Canfield · 05-31-2006, 02:31 PM

Thanks everybody for the responses - once we park for a few days I'll make another run at trying to find the elusive third one.

SargeW · 06-02-2006, 11:25 AM

John,

How much moisture did you get out of them?

John_Canfield · 06-02-2006, 02:08 PM

Sarge - not a clue since I can't even see the bottom of the tank. I can't even tell from the noise it makes. When I would drain my air compressor tanks, it was real easy to see what moisture you have accumulated.