38. Hot Oil Relief Valve
a.
Removal. Refer to Fig. 23 to locate hot oil relief valve, Item 8.
1.
Close makeup valve D.
2.
open fill valve B and drain surge tank and piping.
3.
Turn 2" pipe union on by-pass line counterclockwise until connection is broken.
4.
Turn relief valve counterclockwise and remove from pump discharge line.
b.
cleaning and Inspection.
1.
Clean all parts in an approved cleaning solvent and dry thoroughly
2.
Inspect the hot oil relief valve body for cracks, breaks, and damaged threads.
3.
Replace defective parts.
c.
Installation. Refer to (a) above and install by reversing steps (1) to (4)
d.
Adjusting. Refer to Fig. 24.
1.
Remove cap.
2.
Loosen lock nut.
3.
To reduce pressure on relief valve, turn adjusting screw counterclockwise
4.
To increase pressure on relief valve, turn adjusting screw clockwise.
5.
Tighten lock nut.
6.
Replace cap.
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