GENERAL / Bleed Air From Hydraulic Oil Tank BLEED AIR FROM HYDRAULIC OIL TANK CAUTION: Escaping fluid under pressure may penetrate the skin and eyes, and cause serious injury. Release the pressure before removing hydraulic or other lines. Hot hydraulic oil just after operation may spout and cause severe burns. Wait for oil in order to cool before starting any work. Do not turn the cap on hydraulic oil tank quickly. The cap may fly off by internal pressure. Release any remaining pressure and remove the cap. Preparation 1. Park the machine on a solid, level surface. Lower the front attachment onto the ground. 2. Stop the engine.
Push valve (1) on hydraulic oil tank (3) and release any remaining pressure. 3. Remove cap (2) on hydraulic oil tank (3). 4. Install a vacuum pump to the hole without cap (2). Operate the vacuum pump and maintain negative pressure in hydraulic oil tank (3). W4GB-01-01-001 NOTE: Run the vacuum pump continuously while working. W4GB-01-01-002 Vacuum Hose Coupler Coupler Clamp Inlet Vacuum Pump Cover Hydraulic oil tank Front W4GB-01-04-001 W1-4-1 1 2 3