NOTE: The main relief valve is non-adjustable.
Remove the main relief valve adapter fitting (Item 1) [Figure 20-40-29].
Remove the O-ring from the main relief valve adapter fitting (Item 1) [Figure 20-40-30].
Remove the main relief valve (Item 1) [Figure 20-40-31] from the control valve.
Remove the O-rings and back-up washers (Item 2) [Figure 20-40-31] from the main relief valve.
Assembly: Always use new O-rings and back-up washers (Item 2) [Figure 20-40-31]. Tighten to 35-40 ft.-lb. (47-54 N•m) torque.
