1
Valve bonnet
6
Valve spring
2
Packing ring g
7
Spring adjusting screw
3
Valve plunger
8
Valve washer
4
Valve seat
9
Locknut
5
Valve block
10
Spring cover
Figure 70. Regulator valve, sectional view.
(9)
Remove the screws and lockwashers attaching the valve bonnet (1) to the valve block (5). Remove the
valve bonnet (1).
(10) Use a blunt screwdriver and pry up the packing ring (2) from its seat on the valve block (5). Remove and
discard the packing ring (2).
(11) Lift out and remove the valve plunger (3).
d. Inspection.
(1)
Inspect the mounting studs and nuts for corroded, damaged, or stripped threads.
(2)
Check all hydraulic lines for damaged, cut, or swollen rubber. Replace damaged or worn hydraulic lines.
(3)
Inspect the valve plunger (3) for scoring, pitting, etching, and wear. Replace worn or damaged valve
plunger.
(4)
Check the valve spring (6) for twisting, corrosion, cracks, and metal fatigue. Replace damaged or worn
valve spring.
(5)
Inspect the spring cover (10), locknut (9), valve bonnet (1), and spring adjusting screw (7) for damaged,
corroded, galled, or stripped threads. Replace all defective parts.
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