Air system question

[prpickett]

My secondary (rear) pressure display dropped to 50#. I checked around for leaks and found that the "transducer" (metal cylinder, about the size of a small apple with a wire coming out of it) has a leak in the plastic portion where the wire connects. I pulled the wire connection and verified that the the rear pressure indication drops to zero. There were 2 of these side by side so I'm assuming the other is for the front (primary) pressure. They are located on the driver side, underneath and slightly forward of the front tire. I am trying to find out the actual name for this part and possibly a part number so I can order a replacement. I have a 1999 Dutchstar with a Spartan chassis. Thanks,
Phil

PS: I was unable to locate "lanyards" for draining the tanks, any ideas?

[Lug_Nut]

Phil. The secondary air tank supplies the front axle, not the rear. The primary air is always for the rear, drive axle. I'm not sure what part you are describing.

Peter

[prpickett]

I was "guessing" at the secondary part. The guage that connects is definitely the rear pressure. I have checked the web and I'm pretty sure that the part is called a pressure sender. I've contacted Spartan Chassis and left a message. Hoping that they will get the part number for me, otherwise I will assume that it is a Stewart Warner sending unit (since the guage is) with a Packard connector and see if I can locate one on-line.

[Ed B]

I have a 38' 2003 DSDP. I got a pressure sender unit from Spartan a little more than a year ago. I was experiencing a sudden drop in pressure on one of the gauges and then as quick a return to normal. I talked to Mike at Spartan, 1-800-722-3025 Ext 3407. It is called a (sender-pressure-air) with sku number 6620015411561. It ran a little over $100 with shipping.

[footdoc]

I just changed out one of mine...if it's attached to the firewall side of the brake pedal assy, that's it...mine was pretty tight to get to...inside the gen compartment..

[prpickett]

I removed the leaky device. I was unable to read the label and am still waiting to hear back from Spartan. The close up shows what appears to be a hole where I think the air was leaking but since this is where the electrical connection attaches, there must also be an internal leak.

[Ed B]

Spartan also emailed me a picture of the pressure sender unit with its location under the front hood on the firewall.

[prpickett]

I found the part from a local Stewart Warner dealer, air-press-sender #82894, ($54.01). Replaced and checked, pressure holding great, no leaks. Thanks for the help. Still working on the generator.
-Phil