Cleaning Parts of Control Valve

TM 10-3930-609-35

Do not use wire or metallic rod or

e. Take out spring retaining screws, spring

pick to clean fluid passages since

retainers, springs and washers.

such procedure could result in

f. Remove plungers from valve body.

irreparable damage to parts.

g. Remove packings and remaining plugs from

valve body.

3-56. Inspection of Control Valve Parts

a. Inspect Valve body for cracks and for scoring or

3-55. Cleaning Parts of Control Valve

other damage to plunger bores.

a. Wash parts thoroughly in SD. Dry parts with

b. Inspect threaded parts and tapped holes for

soft lintfree cloth or with compressed air under moderate

stripping or other damage to threads.

pressure.

c. Carefully inspect plungers for surface defects

b. Assure that all fluid passages are free of

such as scoring, pitting or excessive wear.

obstructions.

d. Inspect poppet and bearing for wear and

scoring.

Caution

Figure 3-11. Control valve, sectional view.

3-19