ENGINE
CURSOR 13 turbo intercooler diesel injection/cycle with electronic unit injection pumps. 6 in-line cylinders. Single block head, four valves per cylinder, light alloy pistons. Total displacement: 12.882 cm3. Bore for stroke: 135 x 150 mm.Water cooling. Viscostatic cooling fan. Dry air filter with safety cartridge. Vertical muffler. Emissions according to Euro 5 regulation norms SCR (Selective Catalytic Reduction) system composed of catalytic muffler, AdBlue-tank, injection and control system.
PERFORMANCE
Manual gear ZF 16 S 2220 TO for HD9 84.41 / HD9 84.44 and ZF 16 S 2520 TO for HD9 84.48 / HD9 84.52 / HD9 84.56 with servoshift, 16 synchronised forward speeds + 2 reverse
| gear | gear ratio | speed (km/h) |
| 1 | 13.80 | 6,7 |
| 2 | 11.54 | 8,0 |
| 3 | 9.49 | 9,7 |
| 4 | 7.93 | 11,7 |
| 5 | 6.53 | 14,2 |
| 6 | 5.46 | 16,9 |
| 7 | 4.57 | 20,2 |
| 8 | 3.82 | 24,2 |
| 9 | 3.02 | 30,6 |
| 10 | 2.53 | 36,5 |
| 11 | 2.08 | 44,4 |
| 12 | 1.74 | 53,1 |
| 13 | 1.43 | 64,6 |
| 14 | 1.20 | 77,0 |
| 15 | 1.00 | 92,4 |
| 16 | 0.84 | 110,0 |
| 1 RM | 12.92 | 7,2 |
| 2 RM | 10.80 | 8,6 |
(*) Max speed 90 km/h. Other speeds available, subject to the Astra technical office approval
TRANSFER
Mechanical with two ratios. It consists of a series of helical spur gears, mounted on three shafts, engaged with each other. Differential can be locked by pneumatic control.
Transmission ratio: 1:1 – 1:1,6
Front/rear torque distribution ratio: 1:4,0
AXLES
FRONT
1st axle, steering, in cast iron with doble reduction, central by bevelled pair, lateral by epicyclical group in wheel hubs. 2nd axle in high tensile pressed steel, steering, not drive.
Wheel stud protection.
REAR
Two drive axles in tandem with doble reduction, central by bevelled pair and final by epicyclical group in wheel hubs. The intermediate axle is fitted with distributor that distributes torque between the two axles. Differential lockable by pneumatic control from driver’s seat.
The tandem is anchored to the chassis by silent block mounted torque arms.
On request:
Rear-axle ratio 1:4,229
Rear-axle ratio 1:5,009
Rear-axle ratio 1:5,558
Rear-axle ratio 1:6,095
Rear-axle ratio 1:6,588