12. OPERATION 4. When dump lever 3 is moved to the LOWER position, the dump body will start to move down. 5. When the dump body has moved down a certain distance, move dump lever 3 to the FLOAT position. (When the lever is re- leased, it will return to the FLOAT position.) The dump body will then move down under its own weight. When traveling, always set the dump lever to the FLOAT position regardless of whether the dump body is empty or loaded. If the dump lever is not at the FLOAT position and the shift lever is not at the N position, the central warning lamp will flush and the alarm buzzer will sound.
When raising the dump body, let the accelerator pedal back to the near the maximum angle to avoid any impact load on the hydraulic circuit or hoist cylinders. When the dump body has risen, the shift lever is locked to 2nd speed at the D position and 1st speed at the 5-L position. While traveling, lower the dump body. PRECAUTIONS REGARDING LOAD When using a large wheel loader to load large rocks, if the rocks are loaded directly into the dump body parts of the dump body may be deformed. To prevent this, when loading large rocks, first load sand or soil to act as a cushion, then load the rocks on top of this to reduce the impact on the dump body.
In addition, when loading rocks that exceed the following con- ditions, install the optional dump body reinforcement plate. Rocks with one side over 0.5 m (1 ft 8 in) Rocks of Mohs hardness of more than 4.5 Rocks with a weight of more than 300 kg (662 lb) When transporting steel ingots For details of the types of dump body and the procedure for selection, see “27. SELECTING DUMP BODY” (HD465-5 only). 2-89