The gearbox belongs to the mechanical transmission from the chassis truck drive engine to the duplex pistons pump.
This gearbox permits the achievement of 3 speeds for the duplex pistons pump and is provided with one additional output shaft with 2 speeds for water pump drive.

Constructive characteristics:

The gearbox shafts are mounted in the separating plane of the housings, on the oscillating-radial bearings which do not require later adjustment.
The gears are cylindrical with inclined teeth, tempered on the flankes and grounded.
The free gears are on bronze bushings.

The gearbox is provided with two coupling devices:

  • screening coupling device independently controls the two sleeves from the main output shaft, achieving 1, 2, and 3 speeds at duplex pistons pump.
  • simple coupling device controls the sleeve from the additional output shaft, achieving 1 and 2 speeds at water pump.

For safety in operation, the coupling devices are provided with locking systems for all the working positions.

Technical characteristics

  • max. input torque: 102 daN.m
  • max. input speed: 1283 r.p.m.
  • power at max. speed: 200 HP
  • number of velocity speed: 3+2
  • lubrication: splash
  • oil sump capacity: 35 litri
  • recommended oil: T90EP2
  • overall dimensions: 1400x780x1530
  • dry net weight: 710 kg

Gear ratio

Speed For triplex pump For water pump
Ratio 10,069   5,357 2,964 1,763 0,857