There're some ISUZU Truck Manuals PDF & Wiring Diagrams above the page - Elf, N-series.
One of the most popular ISUZU trucks at the time was the NQR 71/75. Today it was replaced by the NPR 75L model with a carrying capacity of up to 4.7 tons.
It is important that this car is offered with a choice of 2 wheelbase options: 3815 and 4475 mm. As a result, you can install an onboard platform or a van with a length of 5000 to 6300 mm. The 3-seater cabin has received a new design and has become wider.
ISUZU NPR 75L-K with an onboard platform and an awning - 5500 mm long and 4000 kg lifting capacity.
ISUZU NPR 75L has a 5.2-liter turbo diesel 4HK1 (Euro 5) with 155 hp. with a maximum torque of 419 Nm at 1600 rpm. A mechanical 6-speed gearbox is used. The real fuel consumption in combined mode is 14-15 liters per 100 km
ISUZU NPR 75L-K with an insulated van with a length of 5500 mm and a lifting capacity of 3900 kg.
The NQR 90 model is more load-lifting. It is designed for a total weight of 9.0 tons and can carry up to 6.0 tons.
ISUZU NQR 90 is equipped with a three-seater cabin, similar to the NPR 75L model. The same engine was installed - 4HK1 (Euro 5), but its power was increased to 190 hp, and the maximum torque - up to 520 Nm. The gearbox is 6-speed.
Model ISUZU FVR 34 belongs to the Forward family and has a chassis load capacity of 12.5 tons. This is one of the best indicators among the machines of the biaxial layout. Gross weight reaches 18 tons. A large wheelbase of 5550 mm allows the installation of a van up to 8 m long.