Dressta Service Manuals, Fault Codes and Wiring Diagrams
History
Dressta is a global heavy construction equipment company with a rich history, renowned for developing durable, powerful machines for use in the most challenging conditions - from mining bulldozers or landfills to gas and oil pipelayers.
All machines are manufactured by experienced engineers at the plant in Stalewa Wola, Poland - a city whose name literally translates to will of steel. ”From this plant, our expertly manufactured machines are delivered through the network of regional distributors Dressta, thanks to which a quick and easy connection with technical Dressta department and sales department.
Bucket loaders
Dressta manufactures modern high-performance, reliable and durable front loaders that are in high demand among consumers.
The trucks are equipped with turbocharged diesel engines with direct injection, which have constant traction characteristics up to an altitude of 3000 m above sea level.
Since September 1996, Dressta began production of the modernized loader model 560C (instead of model 560B), which, along with other improvements, has a new service brake system: instead of the previously used single-disc, open, dry wheel brakes and their drives, multi-disc, closed brakes have been introduced working in oil. This change significantly increased the efficiency of the braking system, its reliability and durability. The upgraded brakes of the 560C loader do not require intervention during the entire service life of the machine.
When creating loaders, a modular construction principle is incorporated in their design, which increases convenience and reduces the labor intensity of maintenance, repair of machines and reduces their downtime during repair.
Such durability of forklifts is provided by many factors, including high-quality materials and modern production technologies, the perfection and sophistication of the design of the machines.
The greatest effect when using heavy loaders (bucket capacity 3.2-11 m3) at mining and processing enterprises was achieved when they performed work on transshipment, loading and unloading of various rocks and materials, especially when loading heavy mining dump trucks and dump cars with a side height of up to 4 m.
Crawler bulldozers
Parametric range of bulldozers-rippers manufactured by Dressta are unified families of machines.
In addition to the basic models indicated in the table, a number of modifications and complete sets of machines are produced for the production of specific works
or special operating conditions, for which they can be equipped with single or multi-shank rippers, standard, swamp tracks and with lubricated joints, etc. Available in low power TD-7, TD-8, TD-9 (power
with an engine of 52, 60, 67 kW and a mass of 7.5, 7.9, 8.8 tons, respectively), are effective when operating on small construction sites.
The design of Dressta bulldozers is based on a modular principle. Individual module nodes can be dismantled (mounted) separately, without affecting neighboring modules. This significantly reduces labor intensity and improves the convenience of repair and maintenance of modules and the machine as a whole. The labor intensity of replacing a separate module for heavy machines is 48 people / h.
The modular design allows you to overhaul the bulldozer one by one, replacing the modules to be repaired with serviceable ones (from the exchange fund), thereby reducing the machine downtime for repairs compared to the full repair method and increasing its productivity.
Bulldozers, like loaders, are equipped with turbocharged diesel engines with direct injection, which have constant traction characteristics up to an altitude of 3000 m above sea level.
The gearbox control valve system ensures that the oil flows are directed so that the clutches of the direction of travel are activated first and only after that the clutch of the selected gear is activated, which eliminates large dynamic loads in the transmission and chassis assemblies and contributes to an increase in their resource.
Swing mechanisms are two-band hydromechanical transmissions, controlled hydraulically through a system of valves, distributors and multi-plate clutches operating in oil. The operator turns and brakes the bulldozer using levers and a brake pedal. In the event of an accident in the swing hydraulic system or an unexpected engine stop, the brakes are automatically applied due to the force of the compressed springs, and the machine is decelerated. The design of the swing mechanism allows the bulldozer to turn smoothly at radii from 0 to infinity without additional power consumption for turning, facilitates machine control and increases its productivity (by about 40%).
The gearboxes, combined with unique swing mechanisms, provide bulldozers with 6 gears for forward and reverse travel.
The original scheme of transferring the weight of the bulldozer from the main frame to the track frames with the use of a transverse stabilizer beam in the front part provides uniform loading of all structural elements, does not allow overload during operation and increases the resource of these units.
The bulldozers can be fitted with tracks with greaseable sealed joints, which are lubricated for the entire period of operation during assembly. This increases the service life of the tracks by 2 times compared to conventional ones and reduces the power loss of the bulldozer in the track itself.
The bulldozers use a small range of high quality, long-lasting oils, greases and special fluids that ensure the operation of machines at air temperatures down to -50 ° C.
