108 Hydraulic System
9. Install the 0-1000 PSI pressure gauge on the maximum pilot pressure port (see D in Figure 5-19).
10. Press the TAILGATE DOWN switch on the control panel.
11. Using the adjustment screw on the front of the valve, adjust the pressure reducing valve to 550 ±
20 PSI (see G in Figure 5-19).
NOTE: The generated pilot pressure port and the main relief valve pressure port are the same.
12. To adjust the pressure in the main relief valve, install a 0-5000 PSI pressure gauge to the quick-
connect coupler on the inlet cover (see E in Figure 5-19).
13. Activate and maintain the tailgate close function.
14. While maintaining the tailgate close function adjust the main relief valve pressure to 2500 PSI
(See F in Figure 5-19).
Figure 5-19
Valves and ports
Warning!
Replace the 0-1000 PSI pressure gauge with a 0-5000 PSI pressure gauge for step 12.
A
C (behind)
F (main relief valve adjustment screw)
E
B
D
This section, known as the utility sec-
tion, is fixed to an electro-hydraulic
valve only
G
H (behind)
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