TM 9-2815-225-34&P
3-51. AIR COMPRESSOR REPAIR (Contd)
LOCATION/ITEM
ACTION
REMARKS
a. Disassembly (Contd)
21.
Piston (29)
Remove from connecting rod (34).
CAUTION
Be very careful not to score or scratch piston when removing rings. Scoring and scratching
can cause damage to piston.
22.
Three rings (26), (27), and (28)
Remove from piston (29).
Discard rings (26), (27), and (28).
b. Cleaning
WARNING
Compressed air used for cleaning purposes will not exceed 30 psi (207 kPa). Use only
with effective chip guarding and protective equipment such as goggles or shield, gloves,
etc. Failure to comply may result in injury to personnel.
Approved solvents may be flammable and will not be used near open flame. Use only in
well-ventilated area. Failure to comply may result in injury to personnel.
23.
Cover (22) and cylinder
a. Immerse in SD-3 solvent to
head (24)
remove carbon and scale.
b. Remove carbon from valve
cavities, and remove rust and
scale from water cavities.
c. Blow dry with compressed air.
WARNING
Compressed air used for cleaning purposes will not exceed 30 psi (207 kPa). Use only with
effective chip guarding and protective equipment such as goggles or shield, gloves, etc.
Failure to comply may result in injury to personnel.
24.
Crankshaft (43)
a. Unscrew and take out pipe
plug (42).
b. Using SD-3 solvent, thoroughly
clean oil drilling and blow dry with
compressed air.
c. Screw in pipe plug (42).
25.
All other parts
Clean in SD-3 solvent and blow
Ensure all gasket surfaces
dry with compressed air.
are clean and smooth.
c. Inspection and Repair
26.
All parts
Inspect for cracks, breaks,
Discard any damaged parts.
and other damage.
27.
Cylinder head (24) and
Inspect mating surfaces for
Discard if damaged. Do not grind
cover (22)
scratches, scoring, and other
top surface of cylinder head (24).
damage.
Top surface is contoured and
grinding will cause cylinder head
(24) to leak.
28.
Seat(14)
Using suitable micrometer,
Discard if height is less than
measure height of seating area.
0.485 in. (12.319 mm).
3-320
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