SHOP MANUAL
HYDRAULIC
Ch 5 page 8 Ch 5 page 9
HYDRAULIC
8. Test Block
Located on the left side, over the hydraulic tank, has all the test ports from the hydraulic system. Also, all the
connectors from that pressures are mounted on that and are responsible to send information to the VCU.
9. Tilt Cylinders
The Tilt Cylinders are located on the rear wagon on each side of the dumper body. The specs for them are:
• Double acting
• Cylinder diameter DA30: 115mm DA40: 125mm
• Piston diameter DA30: 70mm DA40: 85mm
• Stroke DA30: 2290mm DA40: 2614 mm
10. Brake Valve
The pedal brake is located on the cab front wall (firewall). Access is obtained by tilting the cab. The pressure
setting is 59±2 bar, measuerd ate brake port A. The pressure from brake port A1 is approximatly 2,4 bar higher
than the port A2.
11. Parking Brake Cylinder
The parking brake cylinder is spring actuated, hydraulic released, self adjusting, single disc brake mounted at
the fixed propeller shaft in rear chassis.
12. Emergency Steering Pump
The hydraulic system is equipped with a ground driven radial piston pump fitted at the transmission. This pump
makes the truck steerable if the engine stops or main pump drive fall out.
13. Fan Drive Motor
The Fan Drive Motor is located at the front end of the engine, just behind the cooler package. Access is ob-
tained by removing the bonnet.
Hydraulic parts view DA30 / DA40
Figure 3
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