OPERATION & MAINTENANCE MANUAL STE35SR
Hydraulic System - Exhaust
Notice
If the pump housing is not filled with hydraulic oil when the pump operation, will cause abnormal
high temperature pump, pump may be prematurely
damaged. Therefore, exhaust must be carried out.
1.Discharge air from the main pump
1) Open the rear cover and remove the hose and
connector at (1) of the main pump.
2) Slowly fill the oil port with clean hydraulic oil. When it is
seen that the liquid level of the oil port is almost full and
there are large bubbles, the filling is suspended.
3) After the liquid level at the oil port stops bubbling, the
liquid level will decline. At this time, slow refueling is
conducted again until the liquid level is almost full and stable and no longer drops.
4) Check whether the seal ring of the joint hose is damaged, and replace the seal ring if it is
damaged. Tighten the adapter hose. Clean up any spilled oil.
2.Refer to "starting engine" in the operation section, starting engine. Start the engine at a low idle
speed for 10 minutes before proceeding to the next operation.
3.Drain the air in the oil cylinder
Notice
If the engine is initially run at high speed and the cylinder is operated to the end of the stroke,
damage to the plunger seal will result from air entering the cylinder.
1) Run the engine at low idle speed, and extend and withdraw each cylinder for 4 to 5 times. Be
careful not to operate the cylinder to the end of the stroke (stop at 100mm from the end of the
stroke).
2) Then, operate each cylinder to the end of its stroke for 3-4 times.
3) Finally, operate each cylinder to the end of its stroke 4-5 times to completely exhaust air.
4.Exhaust air from accessories (when equipped with accessories)
If a crusher or other accessory is installed, run the engine at a low idle speed and repeatedly
operate the accessory pedal (about 10 times) until air is expelled from the accessory oil path.
Notice
If the manufacturer has specified the method of exhaust from the annex, exhaust in
accordance with the specified method.
After the exhaust operation is completed, shut down the engine and wait 5 minutes before
starting again to eliminate the oil bubbles in the hydraulic cylinder.
Check for leaks and wipe up any spilled oil.
5.After the above exhaust is completed, check the oil level of the oil gauge of the hydraulic oil tank.
If it is insufficient, add the hydraulic oil to the specified oil level.
To Next Page
Loading...