< Back

Financing & Insurance
See our Offers
View Product Downloads
Yes, I would like to receive future marketing communications (such as email) from Caterpillar Inc., its affiliates and subsidiaries worldwide and the Caterpillar dealer network. Regardless of whether you decide to receive these marketing communications, Caterpillar will continue to send service/transactional messages, including those that have to do with any accounts that you may have with us.


Single width, power extending screed with LPG or electric heating system increases productivity and lowers operating costs.


Extender Mounting Rear-mounted Rear-mounted Less
Screed Type Vibratory Vibratory Less


Weight with Electric Heat 2932.0 lb 1330.0 kg Less
Weight with LPG Heat 2866.0 lb 1300.0 kg Less

Operating Specifications

Standard Paving Width Range 1.7-3.20 m (5.6-10.5 ft) 1.7-3.20 m (5.6-10.5 ft) Less
Maximum Paving Width 13.12 ft 4.0 m Less
Crown Adjustment +4.5% to –2.5% +4.5% to –2.5% Less
Heating System Electric, LPG Electric, LPG Less
Maximum Vibrator Frequency 3400 vpm 3400 vpm Less
Minimum Paving Width 2.13 ft 0.65 m Less


Height 5.1 ft 1.55 m Less
Length, Front to Back, Endgates Attached 5.58 ft 1.7 m Less
Length, Front to Back, Endgates Removed 3.28 ft 1.0 m Less
Minimum Width, Endgates Attached 5.68 ft 1.73 m Less
Minimum Width, Endgates Removed 5.48 ft 1.67 m Less
Screed Plates Thickness 0.39 in 10.0 mm Less
Screed Plates Width, Front to Back, Main Screed 10.0 in 265.0 mm Less

AS3173 Screed

The hydraulic power extendible asphalt screed is available with variable frequency vibrating system and with LPG or electric heating system. The screed control panels include material feeding controls for easy ground crew usage.

Vibrating System

Automatically operated when the AP300 advances following a preset ramp. The AS3173 screed is equipped with electronic ignition, automatic and independent adjustment of the smoothing plate temperature for central and each mobil plate.

LPG Heating System

The system provides high efficiency burners and optimum thermostatic temperature control.

Electric Heating System

The system provides a tractor-mounted generator, replaceable heating elements and operator friendly controls providing a cleaner environment. Feature & benefits include simple operation, fast heat-up time, multi-zone heating elements and thermostatic control of all screed plates. Heavy-duty, user-friendly screed heating control unit with self-diagnostic control is positioned at the rear of the machine for easy ground crew usage.

Screed Assist

The AS3173 is equipped with the screed assist, an electro-hydraulic device maintaining a constant screed pressure on the bituminous mix, independently from the mix bearing capacity and the paving width.