MTS Series 505 SilentFlo Hydraulic Power Unit Model 505-11 - Manual (Page 53)

Model 505.07/.11 SilentFlo™ HPU Maintenance 53
Maintenance
This section describes preventive maintenance requirements and their
recommended intervals for the HPU.
505.07/.11 HPU Maintenance Schedule 56
Checking the Hydraulic Fluid 58
Replacing the Return Line Filter 59
Sample the Hydraulic Fluid 62
Appearance of Hydraulic Fluid Sample 63
Replacing the Hydraulic Fluid 64