00-14 POWER TAKE OFF 3. First remove the oil tank oil filler port plug of (1). Then start the engine, operate the dump lever, and drop and raise the body (cargo deck) several times. Consequently, air is naturally released usu- ally. 4. Tighten the oil tank oil filler port plug of (1). Notice: If the work of Item (2) is performed with plug (1) tight- ened, air may not be released. Notice: When air is mixed in hydraulic operating fluid and be- comes whitely foamy, the air will not be released. So raise the body (cargo deck) and remove plugs (1) and (5). When the hydraulic operating fluid is left alone about for 30 to 60 minutes, the air is naturally separated.
Re-supply oil in accordance with the procedure of Items (2) and (3) of the “Supply Procedure of Hydraulic Oper- ating Fluid”. Principles Under Which Air Is Released Between “B” and “C” For Chamber “B” filled with hydraulic operating fluid, when the body (cargo deck) is dropped, the piston rod is dropped and the hydraulic operating fluid in “Chamber B” passes through the oil pump and is returned to the oil tank. At this time, if air is mixed in, it is discharged from “Surface C” in the oil tank as blow holes. Between “A” and “C” The hydraulic operating fluid pressurized and sent via the oil pump is sent from “Chamber C” to “Chamber B”.
The piston cylinder is raised and the hydraulic operating oil in “Chamber A” is sent to “Chamber C”, and then the air is discharged for the same reason as between “B” and “C”. NPA0027E Legend 1. Oil filler port 2. Level plug 3. Oil tank 3. Set the dump lever to the “Up” position with the en- gine in the idling state. 4. When loosening the air bleeding plug (3) of the cyl- inder about once or twice, air is discharged and then hydraulic operating fluid is ejected. So quickly tighten the plug. Notice: When air is mixed in hydraulic operating fluid and be- comes whitely foamy, the air is not released.
So raise the body (cargo deck) and leave the hydraulic operating fluid alone about for one hour. The air in the hydraulic operating fluid is naturally separated and subsequently air can be released. Even when performing air bleeding work, raise the body (cargo deck) in accordance with the “How to Raise The Body (cargo deck)” described previously. [Three-Rotation Dump Truck] Hydraulic Operating Fluid Supply 1. Raise the body (cargo deck) in accordance with the “How to raise the body (cargo deck)” described previously. 2.
Remove oil filler plug (1) and level plug (2) of the oil tank and supply oil from the oil filler port until the hydraulic operating fluid flows out from level plug (2), then tighten plug (2). Notice: Supplying hydraulic operating fluid more than necessary will cause a fault.