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O p e r a t i o n a n d M a i n t e n a n c e
2. Unscrew the adjusting screw on each of the valves no more than ¼ turn at a time to
decrease the hydraulic pressure until you reach 3,000 psi for the CSR50 or 3,500 psi for
the CSR65.
a. Re-test the hydraulic pressure after each ¼ turn to ensure that the pressure does
not drop below this value. When the pressure reads at 3,000 psi for the CSR50 or
3,500 psi for the CSR65, this means that one of the valves is set to that value, and
the other to a value above that.
b. On the other valve, Unscrew the adjusting screw no more than ¼ turn at a time to
decrease the hydraulic pressure until the pressure drops below the intended value
(e.g. 2,900 psi for the CSR50 or 3,400 psi for the CSR65).
c. Then screw the adjusting screw back up again until you reach 3,000 psi for the
CSR50 or 3,500 psi for the CSR65. At this point, both valves are set to exactly the
correct value.
d. Tighten both locknuts.
For the CSR85
The CSR85 has one hydraulic system, which is composed of one hydraulic pump and three
hydraulic valves.
To adjust the pressure of the hydraulic system, you first need to adjust the pressure of the pump
to 3,970 psi (274 bar). If you cannot reach 3,970 psi, the valves are not adjusted properly, and
you should increase their pressure one by one until the pump reaches 3,970 psi.
Next, you need to lower the pressure of each valve, one at a time, below 3,970 psi so that the
pump pressure reads 3,800 psi. Then, you need to increase the setting of the valve so that the
pump pressure reads 3,970 psi. Lastly, increase the valve pressure over 3,970 psi by turning the
adjusting screw 1/2 a turn.
When the pump pressure is set to 3,970 psi, the reading for the x-port pressure should be
around 3,770 psi. If the reading for the x-port pressure is above 3,770 psi, contact your NRC
distributor to correct the problem.
131
Sliding Rotator Wreckers – Operation and Maintenance
Models: CSR50 - CSR65 - CSR85
REV. 0
SEPTEMBER 19, 2022