The new Daily 4x4 in detail
The new Daily family is now complete with the launch of the new Daily 4x4. After only little more than a year in production the success of the new product is phenomenal. New Daily 4x4 shares many of the new Daily features although as a purpose built off road vehicle many features are new.
One feature of new Daily 4x4 that has been a strong feature of Daily from day one is a separate chassis to ensure ease of body mounting and robust in operation. New Daily 4x4 has a closed box structure for the forward section of the frame to ensure a robust foundation able to withstand the high stresses imposed by off road operation in the most arduous of conditions. This coupled to parabolic leaf springs on which are mounted the drive axles serving to provide positive axle location and high axle articulation necessary for traction under arduous off road conditions.
Cab and chassis features The new Daily 4x4 cab is very much of the new Daily family with a frontal aspect immediately recognisable as a member of the Iveco family of industrial vehicles. The cab is mounted high on the chassis frame to provide an uncompromised suspension travel provision and steps are provided for the driver and passengers to assist in cab access. New also is the front bumper housing fog and dipped beam headlamp units. As well as the normal and wide angle mirrors mounted on the side of the cab, new Daily 4x4 is equipped with a close proximity mirror on the passenger side of the vehicle allowing the driver to see obstacles in this often blind area of the vehicle. The rear view mirrors are available with either short mirror arms, suitable for the 2.0 m width of the vehicle, or long mirror arms to suit a body up to 2.3 m wide. The mirrors also house the side mounted direction indicator lights.
Underrun protection is provided at the rear of the chassis which provides protection to vehicles in the event of a rear end collision. In order not to compromise off road operation, the underrun protection bar may be swivelled upwards and locked in position.
Inside the cab is very much new Daily with the driver comforts associated with an on road vehicle. Special features such as the automatic door window drop by 12 mm to ease door closing introduced for new Daily is brought to new Daily 4x4. New are the driver and passenger assistance handles to aid entrance to and egress from the cab. Differential lock switches and transfer box controls are mounted within easy reach of the driver as are the document and other storage facilities introduced with new Daily. DIN slots are included for radio and tachograph, if required, and an optionally available third site in the roof header.
Standard seating comprises a single 3 position driver’s seat and a dual passenger seat. Driver and the outer passenger seating positions are equipped with 3 point lap and diagonal seat belts with a 2 point lap seat belt for the central passenger position. Optionally available is a 3 point lap and diagonal seat belt for the central passenger position. Further options are available to enhance driver and passenger comfort adding seat heating and/or suspension mounting for the driver and single passenger seat.
At the heart of new Daily 4x4 is the Iveco 3.0 litre HPT engine. This four cylinder 16 valve Diesel engine equipped with variable geometry turbocharger and high pressure common rail fuel injection equipment provides class leading performance. 400 Nm of torque over an engine speed range of 1250 to 3000 rev/min and a rated power of 176 Cv over an engine speed range of 3200 to 3500 rev/min is the best in its class. The engine is certified to the Euro 4 tail pipe emissions requirements using exhaust gas recirculation (EGR) to control combustion generated NOx and a Diesel particulate filter (DPF) to prevent the emission of particulate matter. The management of the engine ensures continuous regeneration of the DPF device even under light engine load conditions such as stationary operation of driven implements by the power take off.
The ZF 6S400 overdrive six speed transmission is coupled to the Iveco transfer box to provide continuous 4 wheel drive. The transfer box houses a third differential and a differential lock as standard equipment. The drive from the transfer box to the front and rear axles provides a torque distribution of 32%25 to the front axle and 68%25 to the rear axle in order to provide the best on and off road performance under all conditions of loading. Transfer box controls provide for high, low and neutral drive ratios, selectable with the vehicle in motion and, for on and off road conditions selectable with the vehicle at rest. Overall this provides for 24 forward drive ratios and 4 reverse ratios.
The drive axles
Iveco drive axles connected by transmission shafts to the transfer box have a final drive ratio of 4.875:1. The rear axle is equipped with a differential lock as standard equipment with the front axle differential lock available as a production option. An auxiliary power unit (APU) provides an electro hydraulic control facility by which differential locks are actuated. The differential locks may be activated with the vehicle in motion and may be deactivated manually; deactivation will be made automatically however as a function of vehicle speed. Power take off (PTO) provision is available from the transmission and from the transfer box with a range of factory fitted PTOs available. Transfer box PTOs may be used under static conditions and with the vehicle in motion.
9.5R17.5 on road tyres are used as standard equipment with off road 255/100R16 tyres as optional equipment for both 3.5 t and 5.5 t models.
Parabolic leaf springs provide the dual role of axle location and vehicle suspension. 3.5 t models use a 2 leaf pack for the front axle and a 3 leaf pack for the rear while 5.5 t versions use 3 and 4 leaf packs for the front and rear respectively. Hydraulic dampers are used front and rear and suspension stabilisers provide the anti roll function. The 3.5 t versions may be specified with the 5.5 t suspension system to provide a heavy duty option.
The Braking system
The braking system specification is the same for both 3.5 t and 5.5 t versions having twin piston disc brake sets (297 mm dia.) for the front axle and drum brakes (270 mm dia.) for the rear.
Mechanical brake force distribution is used for all models under vehicle operation with differential locks applied. The Antilock Brake System (ABS), standard on 5.5 t versions and optional on 3.5 t versions provides an electronic brake force distribution under driving conditions when the differential locks are not engaged. The ABS system may be switched off for certain off road conditions.
The Electrical system
New Daily 4x4 uses the CAN architecture electrical system introduced with new Daily with additional functionality to manage transfer box PTOs and differential lock operation. Instrument cluster variations, door lock and window control management are all carried over. Radio with remote control on the steering wheel is not used on new Daily 4x4 since such application is not compatible with off road application.
The 110 Ah lead acid battery in combination with the 120 A alternator is used as standard equipment with the heavy duty 140 A alternator available as an option.
Integrated electronic road speed limiters are included as standard equipment. 3.5 t versions are calibrated at 110 km/h as standard with 120 km/h calibration optionally available with on road tyres only. 5.5 t models are calibrated at 90 km/h as standard with 100 km/h calibrations with off road tyres and 120 km/h with on road tyres as optional equipment. Both 3.5 t and 5.5 t models are optionally available with an adjustable road speed limiter allowing the driver to set intermediate road speed limits according to the actual legal road speed limits applicable.
Cruise control is used for PTO engine speed management and is included as standard equipment.