TRUCK MIXER DB 3000/4000/4500 HYDROSTATIC
GB
User Manual Rel. 4 of 11/07/18
Page 13 of 20
LEGEND - HYDRAULIC DIAGRAM
Item
Description
Item
Description
1
Diesel engine
13
Hydraulic cylinders (drum lifting)
2
Hydrostatic pump
14
Distribution block
3
Gear pump (drum)
15
Hydraulic cylinders (arm)
4
Gear pump (hydr. steering gear/servo brake)
16
Hydraulic cylinder (grab bucket)
5
Gear pump (Brake release)
17
Hydraulic steering gear
6
Gear pump (facilities)
18
Brake pump
7
Oil tank
19
Servo brake
8
Hydraulic motor (water pump)
20
Brake pump
9
Distributor (facilities)
21
Valve
10
Distributor (drum rotation)
22
Solenoid valve (brake release)
11
Hydraulic motor (drum geared motor)
23
12
Hydraulic cylinder (hydr. steering gear)
24
7.5 Operation and controls
7.5.1 Steering wheel
Turn the steering wheel in the desired direction. Power-assisted steering system powered by means of hydraulic
pump and acting with hydraulic jack on the front half-frame.
All duties are hydraulic: transmission, steering, braking and all movements, therefore: Do not use the
machine with the engine off !!!!
7.5.2 Starting switch
Position
“
0
” OFF engine stop: Engine stop position.
Before stopping the machine, make sure that it is stopped and the parking brake set.
Position
“
I
” ON. In this position the switch connects the battery to all the electric circuits with the exception of the headlights
and the warning lights. The lights and the emergency circuit are always live. The ignition key automatically returns to that
position when it is released from the position
“II” and “III”.
Position
“
II
” Preheating.
When starting the machine in cold climates, keep the key in this position to heat the glow pugs. The preheating position shou ld
not be maintained for more than 15 seconds.
Position
“
III
” Starting. Activates the engine starter and the engine runs.
Do not activate the engine starter for more than 20 seconds at a time. After each starting attempt, let cool for
at least 2 minutes then repeat the operations from position
“II”. Do not use the starter with voltages greater
than 14Volt.
Do not use the starter to move the vehicle.
7.5.3 Hour meter
Indicates the working hours of the machine with the key inserted, check it to
determine the lubrication and maintenance program.
7.5.4 Rotation lamp switch
Enables/Disables rotating lamp.
7.5.5 Warning lights switch
Enables/Disables warning lights.
7.5.6 Indicators device
Activates the direction indicators.
7.5.7 Headlights/Horn switch
Activates the headlights, low beams at first click and high beams at the second
click. By pressing it in any position (zero, first click or second click) it activates the klaxon.
7.5.8 Accelerator pedal
Press the accelerator pedal to increase the motor speed, release it to decrease.
Use the accelerator pedal with the upmost attention.
It’s not a racing car!!!
7.5.9 Brake pedal
Press the brake pedal to slow down or stop the vehicle.
The service brake acts hydraulically by means of pump on the brakes.
The stop lights must light up when the brakes are used.
Use the machine only if both stop lights are working properly.
7.5.10 Parking brake lever
To set the parking brake, pull the lever upwards. To release push it downwards.
Operate the lever to set the parking brake whenever you leave the driver’s seat.
Never start with the parking brake set.
7.5.11 Direction reversing lever
Used to reverse the direction of travel of the machine.
Use it only when the machine stops and at a speed
as low as possible.
