HYDRAULICS
8O-55
Lower Circuit
10.Using the joystick, lower the reels completely.
11.While watching the pressure gauge (Figure 8O-5),
place the joystick in the lower position. The relief
lower relief valve should open at approximately
500 psi (3445 kPa).
Conclusion
• If the relief valve opens within range, the lower relief
valve is not faulty.
• If the relief valve does not open within range,
replace the lift valve.
12.Remove the gauge and cover the quick connect
port with the rubber cover (Figure 8O-5).
Figure 8O-5. Lower Circuit Testing
Quick
Connect
Fitting
0 to 2000 psi
(0 to 13790 kPa)
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