Remove the plug (Item 1) [Figure 20-40-119] or optional port relief valve from the control valve.
NOTE: Optional port relief (Item 1) [Figure 20-40-119] is a 3500 PSI valve.
Remove the O-rings (Item 1) [Figure 20-40-120] & [Figure 20-40-121] and back-up ring (Item 2) [[Figure
20-40-120] & [Figure 20-40-121] from the plug.
