GT-3400 Specifications


Right-side or left-side to accommodate your paving needs.


C4.4 Caterpillar® diesel engine (emission controlled).
Power: 136 hp (101.5 kW) @ 2200 rpm.


Fuel reservoir:
60 gal. (227.1 L), locking cap.
Hydraulic oil reservoir: 100 gal. (378.5 L).


Controls: GOMACO's exclusive operating system features multi-language capabilites, metric or imperial measurements, color graphics, and a 6.5 in. (165 mm) anti-glare display screen.
Reverse auto control: Single switch sets controls for automated control with machine traveling in reverse.
Remote control: Powered by a 9.6 volt NiCad, off-the-shelf, Makita® battery, which makes it easy to replace. The machine ships with two batteries and a DC charger that is in the console for charging second battery. A fully charged battery will last for approximately twelve hours. The remote fits under the console with the GOMACO exclusive operating system for secure storage.


One closed-loop axial piston pump; two open-loop axial piston load sensed pumps; one open-loop axial piston pressure comp pump; and one open-loop gear pump.
Hydraulic oil cooling: Oil cooler is combined with the charge air cooler and the radiator in a side-by-side remote mounted package.
Maximum flow through cooler: 65 gpm (246.1 Lpm).
Filtration: One in-tank filter, 10 micron absolute synthetic 25 psi by-pass; One pressure filter for servos, 10 micron absolute synthetic non by-pass; Two 100 mesh suction strainer 3 psi by-pass.


Hydraulically powered, motor-in-head, variable speed, independently controlled, and synchronized with machine movement.
Quantity: Four hydraulic circuits and two hydraulic vibrators with mounts are standard.


Curb and gutter mold:
One mold is provided with the machine. Optional molds available for curb and gutter, barrier, parapet and sidewalk.


Hydraulic lift:
18 in. (457 mm) hydraulic vertical adjustment with the capability to adjust up to 24 in. (610 mm) with 6 in. (152 mm) manual vertical adjustment.
Sideshift: 36 in. (914 mm) hydraulic sideshift standard.


SUBGRADE TRIMMER (Sectionalized)
Direct-drive trimmerhead:
The trimmer’s closed-loop hydraulic circuit and radial piston motor provide 28,684 inch-pounds (3241 N-m) of torque at the trimmerhead. Trimmer wheel: 24 in. (610 mm) diameter trimming wheel.
Trimmer wheel rotation: Upward cut.
Width: 30 in. (762 mm) to 78 in. (1981 mm) sectionalized trimmerhead with hydraulic sideshift capability. Right-side discharge standard.
Sideshift distance: 36 in. (914 mm) hydraulic sideshift standard.
Hydraulic lift trimmer: 18 in. (457 mm) hydraulic vertical adjustment.


Charging auger:
Auger is directly driven with a radial piston hydraulic motor which provides an increase in torque and speed.
Length: 8 ft. 10 in. (2.7 m).
Auger diameter: 14 in. (356 mm) diameter full pitch auger with abrasion-resistant flighting.
Auger speed: Variable up to 110 rpm.
Auger mount: Features a 16 in. (406 mm) hydraulic slide adjustment for receiving concrete from the ready-mix truck and the auger slides inside of shipping width for transport.


High-pressure water system with two water tanks. One tank is located under the fiberglass shroud at the rear of the machine and the second is under the center of the machine.
Capacity: Total capacity of the two tanks is 90 gal. (340.7 L), plus trigger gun control, and adjustable pressure unloader.


Three hydraulically powered, gear-driven crawler tracks.
Overall track length: 5 ft. 1.4 in. (1.56 m).
Center-to-center sprocket/idler length: 40 in. (1016 mm).
Track pad width: 11.8 in. (300 mm).
Gearbox reduction: 100:1.
Track speed: Variable from 0 to 50 fpm (15.24 mpm) in paving mode and 0 to 125 fpm (38 mpm) in transport mode.
Track tension: Fully automatic, hydraulically locks in on machine start-up, maintaining a steady tension of the track chain.
Leg height adjustment: Each track has 36 in. (914 mm) hydraulic adjustment.
Power-slide leg for positioning center track: Hydraulically controlled, allows up to 30 in. (762 mm) lateral track movement.


Overall length:
16 ft. 9 in. (5.11 m).
Overall height: 8 ft. 5.8 in. (2.59 m).
Overall width: 8 ft. 5.5 in. (2.58 m).


WEIGHT (Approximate)
27,500 lbs. (12,474 kg):
Weight will vary depending on size of mold and options.



Barrier/parapet sidemount attachment. Maximum slipforming height of 50 in. (1270 mm).

Sidewalk slipforming up to 6 ft. (1.83 m) wide.

Hydraulic pressure-compensated sideplates.

Additional vibrators and mounts.

Two additional vibrator circuits and controls.

Trimmerhead insert sections of 12 in. (305 mm), 18 in. (457 mm), 24 in. (610 mm) and 30 in. (762 mm) widths are available for trimmerhead width to 78 in. (1981 mm) maximum.

Auto-transition and slope compensation software.

Curb and gutter molds will be built to customer specifications. Various mold options are available.

GT-3600 molds with hook-and-go will fit directly to the GT-3400. If you have a GT-3600 split mold you can purchase a hook-and-go hopper top to allow molds to fit the GT-3400. If you have a solid hopper you would need to modify your mold to have a hook-and-go mount.

Monolithic mold.

Driveway depressor for monolithic mold, hydraulically powered, factory installed on new mold only.

Polyurethane track pads (81 pads required).

Radius wheels for use on radius work, saving time on stringline set-up.

3D package for stringless control.

Other options are available to customize machine to accommodate applications and customer needs.








For Additional Information


GT-3400 Curb & Gutter

GT-3400 Photos

Download The GT-3400 Brochure (PDF)

Download The GOMACO Full Line Brochure (PDF)

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