Operations Manual United Kingdom 1-October-2013
TA9 & 10 Tier 4 Page 4 - 3
Description 4
(3) Chassis
The chassis is of the two part articulating type having a centre pivot which articulates in both
vertical and horizontal planes. Front and rear axles are bolted directly to the chassis.
(4) Steering
Steering of the dumper is by an ‘Orbitrol’ hydrostatic steering unit, that powers a single hydraulic
cylinder connecting the front and rear chassis units.The steering unit is operated by a
conventional steering wheel.
The steering wheel is fitted with a “spinner” knob to aid manoeuvring on the worksite. Under no
circumstances must the knob be used to control the machine when it is used on the public
highway. If possible the knob should be removed from the steering wheel before highway travel.
In the event of hydraulic failure the steering will still operate but under these circumstances
steering wheel loads are high and the dumper must only be driven at slow speeds.
(5) Transmission
A torque converter and Synchro Shuttle 4 speed gearbox are fitted. A transfer box transmits
power to the front and rear axles.
(6) Braking System
Totally enclosed oil immersed brakes are fitted within the axles. These are self adjusting and
have multiplate sintered discs. The brakes are applied hydraulically by a foot pedal located on
the floor plate.
A separate parking brake operates on a disc on the output shaft of the gearbox. This is controlled
by an over centre type lever located on the right hand side of the operators seat.
(7) Electrical System
A 12v negative earth electrical system is fitted. An isolator switch with removable key is fitted for
added safety and security.
The machine is available with full lighting to comply with current EU/ISO road traffic regulations.
4.4 Skip
The site dumper is basically a load carrier and the skip can be used for a multitude of building/
contracting site functions, but essentially it is used for carrying free flowing materials from
excavations or demolitions and general site building activities.
The skip is raised and lowered by two double acting hydraulic cylinders mounted between the
front chassis and the underside of the skip and controlled by joystick operated control valve.
The joystick control for skip operations is positioned to the right of the drivers seat.
(1) Raised Skip
As a safety aid when working on the machine a support is provided to lock the skip in the raised
position when performing maintenance or repairs on the machine This prevents the skip from
lowering accidentally and causing injury. Do not reach or work under a raised skip without the
support fitted.
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