TM 5-4310-384-13
REMOVAL.
WARNING
Disconnect main power and turn compressor unit off before performing maintenance procedures.
CAUTION
Intake valve assembly and exhaust valve assembly must not be interchanged. Identify and tag during
removal.
NOTE
This model compressor has two low pressure cylinders and one high pressure cylinder.
a.
Disconnect main power and turn compressor switch OFF.
b.
Open drain cock and completely relieve tank pressure. Close drain cock.
c.
Remove intercooler (1) at cylinder head fittings (2). Refer to paragraph 3-31.
d.
Remove aftercooler (3) at cylinder head fitting (4) only. Refer to paragraph 3-43.
e.
Remove capscrews (5) securing low pressure (reed valve) head (6).
f.
Remove head (6).
g.
Remove valve plate gasket (7) and discard.
h.
Remove rolling screws (8) and reed valves (9). Identify reed valves for proper reassembly.
i.
Remove valve plate (10).
j.
Remove cylinder head gaskets (11 ) from low pressure cylinder (12).
k.
On high pressure cylinder head (13), remove valve chamber caps (14) and gaskets (15). Discard gaskets.
I.
Remove valve retainers (16).
m. Remove intake valve assembly (17) and exhaust valve assembly (18).
n.
Remove valve gaskets (19) and discard.
o.
Remove capscrews (20) securing high pressure cylinder head (13). Remove head.
p.
Remove head gasket (21 ) from high pressure cylinder (22) and discard.
CLEANING AND INSPECTION.
WARNING
Clean with compressed air no greater than 30 psi. Protective eyewear must be worn when using
compressed air.
a.
Clean cylinders (12 and 22) and cylinder heads (6 and 13), especially area between cooling fins.
b.
Remove old gasket material stuck to top of cylinders and bottom of heads.
c.
Clean reed valves (9), valve plate (10), and valve assemblies (17 and 18) with compressed air. Wipe clean with
rag.
d.
Inspect reed valves (9) for flatness by placing on valve plate (10). Replace if not flat, or if it is distorted or
cracked.
3-43
