SECTION 6: MAINTENANCE
CAS40P 40 CFM / 100 PSIG
PAGE - 40
®
An Oshkosh Corporation Company
2. Remove valves; for detailed compressor
disassembly instructions, refer to
Section
6.4.13, Disassembling the Compressor
.
3. Clean thoroughly, using compressed air and a
soft wire brush.
4. After cleaning, exceptional care must be
taken that all parts are replaced in
exactly
the same position, and all joints must be tight
or the compressor will not function properly.
5. When all valves are replaced and connections
are tight, close hand valve at tank outlet for
final test.
The four compressor valves should be inspected and
cleaned every six months, after 500 hours of opera-
tion, or anytime the cylinder head is disassembled.
The valves should also be inspected anytime there is
a decrease in air flow or pressure output that is not
the result of other causes. Install new gaskets any-
time the valves are inspected, cleaned, or replaced,
or, when the cylinder heads are disassembled.
Damaged valves can cause compressor damage
and malfunctions. Contact IMT for valve replacement
kits.
6.4.6.1 INSTALLATION
Refer to
Figure 6-7
and the following procedure:
1.
Place valve gaskets [
D
] & [
V
]; valves [
U
],[
E
], [
W
]
and [
EE
]; and cages [
T
], [
F
], [
X
] and [
DD
] into
head in sequence as shown. Install "O" ring [
N
]
NOTE
Clean with safety solvent and dry off
with compressed air. Depending on what
is found at this inspection, the next
inspection should not be more than four
(4) to six (6) months later. These two
inspections will guide you in scheduling
periodic cleaning times which will pay off
many times over in providing trouble-
free service and reduced down time.
NOTE
Valve gaskets should be replaced each
time valves are removed from pump.
Replace springs, discs and seats when
worn or damage.
NOTE
When performing valve maintenance,
always replace machine parts with new
kit parts regardless of part condition.
Manual #99905382 Rev 02
(JUNE 2018)
