1-6 BA 348-01 * 2.0 * 34801b110.fm
1 Introduction
Main components of wheel loader
• ROPS-tested cabin (standard) or canopy (option)
–see“Cabin number” on page 1-15
➥ROPS is the abbreviation for “Roll Over Protective Structure”
• Water-cooled Yanmar three-cylinder diesel engine
➥23 kW at 2600 rpm (27 kW option)
➥Exhaust emissions according to EC standard 2004/26 EC
• Sturdy steel sheet frame;
➥Rubber-mounted engine and cabin/control stand
• Hydrostatic drive with automatic drive control, inching valve
➥20 kph max. speed
• Hydraulic four-wheel power steering with emergency steering features
• Axle carrier with steered front and rear wheel motors
• Hydrostatic service brake (inching brake)
• Parking and auxiliary brake in front axle wheel motors
➥Spring brake actuator braking system with electro-hydraulic actuation
➥Differential lock (option)
Hydrostatic drive
The diesel engine permanently drives a hydraulic pump (variable displacement pump),
whose oil flow is sent to the wheel motors flanged onto the front and rear axles.
This creates permanent 4 wheel drive.
Operating hydraulics and 4 wheel steering
The variable displacement pump also drives the flanged gear pump for the operating
hydraulics and hydrostatic 4 wheel steering. The oil flow of this pump depends on the diesel
engine speed.
When the machine is in operation, the entire diesel engine output can be transmitted to the
gear pump for the operating hydraulics and steering. This is made possible by a so-called
inching valve that responds as soon as the brake/inching pedal is used, reducing or cutting
off power input of the drive. Therefore, engine output is fully available for the loader unit by
pressing the accelerator pedal and the brake/inching pedal at the same time.
Cooling system
A combined oil/water radiator (for the diesel engine and the hydraulic oil) is located at the
rear of the machine.
The indicator lights on the instrument panel of the machine indicate whether the engine
and hydraulic oil temperatures are too high.
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