Operation & Maintenance Manual──LG946L Wheel Loader
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pressure oil tank and pipe attachments, which is mobile and flexible. The bucket unit includes
dumping, neutral and receiving bucket in three positions. The lift-arms unit controls four actions
including floating, lowering, neutral and lifting.
The set pressure of the hydraulic system safety valve is 15MPa～15.5MPa. The overload pressure
of the bucket large cavity is 18-18.5MPa while that of the small cavity is 12MPa.
1- Boom cylinder 2. Multi-way valve 3.Steering cylinder 4.Steering gear 5. Priority valve
6.Steering and transiting twin pumps 7.Working pump 8. Hydraulic oil tank 9.Oil returning
filter10.Bucket cylinder
Figure 5-2 Principle Diagram of hydraulic system schematics that is controlled mechanically and manually
3 BRAKE SYSTEM
Brake system is used when the machine decelerates, stops or for long-term parking on the level
ground or slight incline. The brake system of this machine is composed of a driving brake system
and parking brake system as shown in Figure 5-3.
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