Section 7
Hydraulic System
20412971
8-2012/Rev 08
7-4
7.4 Service and Maintenance Procedures
The extreme duty cycles demanded of the hydraulic system make routine inspection and
maintenance acutely important. Leaks must be detected and remedied as soon as possible.
The operating pressure settings must be checked daily, and the electric motor must be inspected at
regular intervals. It is also possible for the flexible coupling to fail and require replacement. The
procedures for servicing these components are detailed below.
NOTE
Refer to Section 12, Parts List for a complete listing of replacement parts and part
numbers.
Hydraulic Operating Pressure
Hydraulic operating pressure settings should be checked daily and adjusted as necessary. High
and low operating pressure on standard machines is adjusted at the high and low pressure control
valves per the specifications in Table 7-1.
For machines equipped with proportional pressure control, high pressure adjustments are made
from the Pressure Control Screen on the control panel. The following specifications and the Low
Pressure Adjustment procedure are used for low pressure adjustments.
NOTE
The pressure switch on the control panel must be set to high pressure to enable the
proportional pressure control.
Table 7-1
Hydraulic Operating Pressure Limits
Adjustment Pressure Limits
Increase Decrease Minimum
Maximum
30/50/60HP 100HP
High Pressure Clockwise Counter-clockwise 290 psi
(20 bar)
3,000 psi
(207 bar)
2,600 psi
(179 bar)
Low Pressure Clockwise Counter-clockwise 290 psi
(20 bar)
1,500 psi
(103 bar)
To Next Page
Loading...
Need help?
General
