Yale 524150797 Maintenance Manual page 113

1900 YRM 1506
Once relief valve pressure is reached, hydraulic oil
will continue to be diverted from the lift cylinder to the
reservoir until the lift button is released or electrical
power is interrupted.
Figure 2. Hydraulic Schematic
1. LIFT CYLINDER
2. HYDRAULIC POWER UNIT
3. CAPSCREW
4. FITTING
5. HOSE
6. FITTING
Figure 3. Hydraulic System
Operation
3