One-Person Operation
In-cab controls handle cleaning, tack coating, patching, dust coating, boom motion, blower speed, aggregate flow, and emulsion flow.
Back to Pothole Patching
Spray-injection pothole patcher
LeeBoy Rosco RA-400 Patcher
The LeeBoy Rosco RA-400 is a one-person spray-injection patcher for high-output pothole repair from the driver seat.
Aggregate hopper
5 cu yd / 11,000 lb
Emulsion tank
300 gal
Aux engine
74 hp Kubota T4F
Air system
850 cfm at 2,850 rpm
Where it fits
A one-person spray-injection patcher designed for very high daily repair counts.
The RA-400 is different from a hot-mix patching truck. It uses a spray-injection process: clean the defect, tack coat, inject coated aggregate, and dust coat from the in-cab joystick controls.
LeeBoy positions the RA-400 for very high-output patching, with literature describing more than 200 road defects corrected in a single day by one operator.
For Texas agencies trying to cover a large pothole backlog with limited crew availability, the RA-400 is the model to study when one-person production and working range matter most.
One-person operation from the driver's seat
Joystick-controlled front-corner patching boom
VORTEC rock transfer and emulsion coating system
300 gal emulsion tank and 5 cu yd aggregate hopper
Patch-on-the-go hydraulic system for slow moving operation
OEM video
Watch the RA-400 in context
The manufacturer video gives buyers a quick look at the workflow, controls, and machine layout before they talk through options with Closner.
Feature details
Built around the repair workflow
Front-Corner Boom
The telescoping front-corner boom reaches the defect while keeping the operator in the cab and minimizing manual labor in the roadway.
High-Volume Air
A hydraulically driven positive displacement blower provides up to 850 cfm for the spray-injection process.
Technical specs
Dimensions
28 ft retracted; 38 ft 5 in extended; 8 ft 6 in wide; 10 ft high
Weight
18,000 lb with standard chassis
Chassis
Cab-over Peterbilt 220 or equivalent; 33,000 lb GVWR
Main engine
240 hp diesel engine
Auxiliary engine
74 hp Kubota Tier 4 Final diesel
Aggregate system
5 cu yd / 11,000 lb low-profile hopper; accepts aggregate up to 0.75 in
Emulsion tank
300 gal insulated liquid asphalt emulsion tank
Air system
Positive displacement blower, 0-850 cfm
Hydraulics
Dual hydraulic pump; 28 gpm blower circuit and 9 gpm other functions
Boom reach
7 ft 5 in retracted; 11 ft 5 in extended; 42 sq ft patching area
Arrow board
30 x 60 in LED rear-mounted arrow board
Photo gallery
RA-400 photos and details
Common questions
Answers buyers search for
What is the LeeBoy Rosco RA-400 Patcher best used for?
Large pothole backlogs, one-person patching routes, municipal response crews, and agencies that prefer spray-injection repair over shovel-fed hot mix patching. Closner can help confirm whether the RA-400 fits your crew size, material workflow, route length, and fleet strategy.
Who supports the RA-400 in Texas?
Closner Equipment supports pothole patching and asphalt repair equipment in Texas with sales guidance, available inventory conversations, parts, and service coordination.
What kind of patcher is the LeeBoy RA-400?
The RA-400 is a spray-injection pothole patcher using aggregate, emulsion, air, and an in-cab joystick-controlled boom.
Can one person operate the RA-400?
LeeBoy literature describes one-person operation from the driver's seat with all patching functions controlled in cab.
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