Maintenance Procedures - NRC 30CS Operation And Maintenance Manual

118
O p e r a t i o n a n d M a i n t e n a n c e
4.4

Maintenance procedures

This section presents all maintenance procedures.
4.4.1 Adjusting the hydraulic pressure (main relief)
The CS models have a dual inline hydraulic system that has three valves: two located in the
boom base behind the steel cover, and one inside the wrecker body under the wrecker floor. As
a result, the available hydraulic pressure will be limited by the element that provides the least
pressure.
For each hydraulic valve, the pressure must be adjusted to 3,000 psi (206.8 bar). To adjust the
pressure of each hydraulic system, first increase the pressure of each valve to 3,100 psi and
then slowly decrease the pressure of each valve to 3,000 psi.
FIGURE 36 — POSITION OF THE VALVES ADJUSTING SCREWS IN THE BOOM BASE
REV. 1
Composite Slider Wreckers – Operation and Maintenance
Models: 30CS-40CS-50CS
APRIL 12, 2023