1. home
  2. news
  3. features
  4. Poop Truck: Ford F-550 4x4 on 41s With One Crappy Off-Road Job

Poop Truck: Ford F-550 4x4 on 41s With One Crappy Off-Road Job

But…its office is the Rubicon Trail.

When you see this Ford F-550 4x4 cruising around the Rubicon Trail, you might call it the Pooper Duty, the Super Doodie, the Poop Truck, the Dump Truck, or the Dump Pumper. Why? It was built to crawl the world-famous off-road trail to maintain its restrooms—which includes removing human waste.

El Dorado County, the agency responsible for maintaining the Rubicon Trail, acquired the 2006 Ford F-550 4x4 as a used bucket truck and WFO Concepts, in Auburn, California, was tapped to give it a new life.

Ford F-550 4x4 trucks come from the factory with Dana Super 60 front axles, a highly sought-after axle featuring wider and thicker axletubes, 35-spline axleshafts, 1550-series U-joints, and 4.88 gears. WFO Concepts left the Super Duty's V-10 engine and transmission alone and added a NorthWest FabWorks BlackBox underdrive to give the truck additional low-range gearing. Additional beef for the axles, a custom-built exocage and bumper system, rock sliders, and skidplates were also on the build list.

The new Ford F-550 4x4 allows El Dorado County employees to service the Rubicon's toilets (in style) and in two days. The onboard tank's 400-gallon capacity can hold the waste from between four and five bathrooms, depending on how heavily they've been used. Read on for more details on WFO Concepts-built Poop Truck!

41-inch Tires for the F-550 Poop Truck

Underneath the Ford F-550 4x4 Poop Truck are a set of Michelin XZL 355/80R20 tires mounted to Stazworks double-beadlock wheels.

After removing the lift and bucket from the frame of the Ford F-550 4x4, WFO Concepts mounted a septic vacuum tank from Crescent Tank MFG to the rear of the truck.

Engine mounts from Advance Adapters were repurposed to attach the tank to the frame.

There's onboard fresh water along with a pressure washer to keep the toilets and outhouses clean. WFO Concepts also built toolboxes into the sides of the Poop Truck.

Protecting the Ford F-550 Poop Truck

Protecting the Ford F-550 4x4 is a custom exocage built from 2-inch, 0.120-inch-wall DOM tubing. Rock sliders mesh with the 'cage and are welded to the frame. They're built from 2-inch, 0.250-inch-wall tubing to keep the truck's sheetmetal safe from the Rubicon's boulders.

The Ford F-55- Poop Truck carries 30 gallons of fuel in a custom-built tank. Its bottom is overbuilt with 0.25-inch steel while 3/16-inch steel makes up its other sides. The stock pump and sending unit were maintained so the factory fuel gauge still works.

The rear axle holds 5.38 gears and 40-spline axleshafts and is held in place by leaf springs and blocks offering four inches of lift. Radflo 2.5-inch shocks damp movements in the front and rear.

WFO Concepts Radius Arms

WFO Concepts used its radius arm kit to hold the front Dana Super 60 in place beneath the truck.

Defending the belly of the truck from rocks is the custom-built skid system.

Lift Coils, LED Lights, and Dana 60 Upgrades for the Ford F-550

Skyjacker coils lift the truck 4 inches while the custom-built front bumper houses a Warn winch and Rigid LED lighting. PSC is the name on the hydro-assist steering, RCV front axleshafts replace the stock units, and behind the diff cover sits an ARB Air Locker.

Want More?
CLICK HERE see more on this build from WFO Concepts!