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Tier IV-Compliant Doosan DX300LL Log Loader Provides Increased Durability, Power, Performance

Forestry professionals will be impressed with the durability, power and performance from the new Tier IV-compliant Doosan DX300LL-5 log loader.

Mon April 13, 2015 - National Edition
Construction Equipment Guide

Forestry professionals will be impressed with the durability, power and performance from the new Tier IV-compliant Doosan DX300LL-5 log loader. The “dash-5” model replaces the interim Tier IV (iT4) DX300LL-3 log loader. The DX300LL-5 is powered by a 270-net-horsepower Scania DC9 diesel engine, providing 27 percent more horsepower than the “dash-3” model.

The DX300LL-5 log loader is equipped with a fully guarded, heavy-duty long undercarriage and upper structure designed specifically for forestry applications such as timber harvesting, skidding, forwarding and shovel logging. Its tracks feature heavy-duty links with double grouser shoes and full-length track guiding guards.

Operators also can get a good view from inside the log loader with a 4-ft. (1.2 m) cab riser with guarding. The cab riser can be hydraulically tilted for transport. Four optional LED front working lights and two LED rear working lights are mounted to the cab to provide plentiful light before sunrise or after sunset.

DX300LL-5 log loader operators can monitor the log loader’s parameters, such as engine rpm, battery voltage, and front and rear hydraulic pump pressure, while viewing the rearview camera image on an improved 7-in. liquid-crystal display (LCD) screen. An optional side camera is available, allowing both camera displays to be viewed at once.

To help save valuable diesel fuel, Doosan added an auto-shutdown system for use during non-working conditions. Log loader operators can configure the idle time before auto-shutdown from 3 to 60 minutes. When enabled, the feature will shut down the log loader’s engine when the preset idle time is met.

New Machine Updates

In addition to auto shutdown, the Tier IV-compliant Doosan DX300LL-5 log loader has the following updates:

• Improved heel design works in tandem with a log grapple

• More robust front guard

• Boom cylinder guard

• Cab guard

• Standard rock guards

• Pattern change valve


Factory-installed options for the new DX300LL-5 log loader include the following:

• LED lights for brilliant nighttime visibility

• Side camera with standard rear camera for improved visibility

• Straight travel pedal, which allows the operator to travel in a straight line more easily

• Block heater or diesel-powered coolant heater for cold-weather starts

• Fuel filler pump to assist in refueling when refueling truck does not have pumping system

Tier IV Solution

The Doosan DX300LL-5 complies with Tier IV emission standards with modified diesel engines and aftertreatment technologies. The engine is optimized for use with a high-pressure common-rail (HPCR) fuel delivery system and a cooled exhaust gas recirculation (CEGR) system. It utilizes a diesel oxidation catalyst (DOC) to reduce particulate matter (PM) and selective catalyst reduction (SCR) aftertreatment to reduce nitrogen oxides (NOx). Additionally, a variety of aftertreatment systems have been implemented as part of the Tier IV compliance, such as diesel exhaust fluid (DEF), which is used with SCR technology.

Doosan Telematics

Doosan log loaders come with a standard three-year subscription to Doosan Telematics, which allows equipment owners and fleet managers to remotely monitor machine location, hours, fuel usage, engine idle versus work time and error codes, as well as engine and hydraulic temperatures. Machines can be monitored via an online Doosan Telematics account. In addition, Doosan dealers can provide improved customer support using the system by responding to machine warning messages and alerts, troubleshooting machine issues, and then sending a field service vehicle to help with repairs and deliver the proper parts.

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