TM 55-1650-261-40
b. Inspect all components for evidence of corrosion.
13. Cleaning
c. Inspect filter for damaged screen.
a. Clean all metallic parts with dry cleaning solvent
d. Inspect electrical receptacle connector for bent
(Item 1, table 3). Dry with clean, filtered compressed air
or broken pins.
not exceeding 15 psi.
e. Inspect all metallic parts for breaks, cracks, nicks,
b. Remove stubborn dirt or foreign matter from
scratches, scoring, distortion, gouging, or other obvious
external surfaces of slide valve assembly by scrubbing
defects.
with a stiff-bristled brush dipped in dry cleaning solvent
f. Inspect springs for deterioration and damage.
(item 1, table 3). Dry each component with clean, filtered
g. Inspect solenoid assembly for condition of cover
compressed air not exceeding 15 psi.
and wiring for wear and damage.
h. Refer to table 4 for serviceability of parts.
14. Inspection
a. Inspect all threaded components for crossed,
stripped, or worn threads.
Table 4. Non-Desctructive Test Data
Descriptive
Type of
Fig.. Item
Nomenclature
Test
Procedure
Applicable Defects
3-1
Connector
Visual
Replace if pins are broken or damaged.
3-12
Spring
Mechanical
Replace if damaged or if it does not support
20.7 pounds + 10 percent at 1.255 inches.
3-7
Retainer
Visual and
Replace if OD exceeds 0.500 + 0.005 inch and
Dimensional
ID exceeds 0.374 + 0.001 inch.
3-20
Filter
Visual
Replace if filter screen is damaged or distorted.
3-23
Visual
Replace if case is damaged or if the wiring is
Assembly
damaged or worn to the extent it may impair
proper function.
3-26
Spring
Visual and
Replace if damaged or plating is deteriorated
Mechanical
or if it will not support 3.0 pounds + 5 percent
at 0.226 inch.
3-28
Plunger
Visual and
Replace if OD exceeds 0.4350 + 0.005 inch.
Dimensional
3-14
Pilot Spool
Visual
The pilot spool assembly, spool-plug assembly,
Assembly
and body are mating lap surfaces and all must
be replaced if any of the lap surfaces are
3-29
Spool-Plug
Visual
damaged or scored and will not meet the test
Assembly
procedures cited herein. The reference lap
diameter of the spool-plug assembly and body
3-32
Body
Visual
is 0.625-inch diameter. The reference lap
diameter of the pilot spool assembly and body
is 0.187-inch diameter.
serviceability criteria of table 4.
15. Repair or Replacement
c. Straighten bent electrical receptacle connector
pins with a standard pin straightener.
a. Replace all packings, retainers, gaskets, and
d. Clean and neutralize all areas showing signs of
nylon thread locks.
corrosion.
Note: The age of all packings must not exceed 24
e. Replace all threaded components that have
months from date of manufacture at time of reassembly
crossed, stripped, or worn threads.
of the unit.
/. Resolder all connections, when required, in
b. Replace all parts that have corresponding kitted
parts and all parts that do not meet the
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