There's an Eicher Truck Tech Manual via Specs PDF above the page.
The Indian company Eicher has been manufacturing buses and trucks since 1948.
It is part of Volvo Trucks.
The company uses its own chassis in its products. It produces a wide range of passenger transport - for urban and intercity communication, school and other buses, as well as trucks.
The year 2006 was marked for Eicher Motors Limited with the release of 24,300 trucks, mainly of light and medium payloads.
In addition to trucks, the company also produced buses, motorcycles and gearbox parts.