CAS40P 40 CFM / 100 PSIG
SECTION 6: MAINTENANCE
PAGE - 53
®
An Oshkosh Corporation Company
Removing and Replacing a Side Panel
to remove
the side panels.
Refer to
Section 8.12, Compressor Overhaul Kit
#73744209 - Piece Parts
,
for the full compressor
overhaul maintenance piece part assembly. When
performing internal maintenance and/or repairs on
the compressor unit, refer to
Section 8.2
,
Compres-
sor Unit Assembly
for a full, visual breakdown of
parts.
A.
Refer to
Section 6.4.9
.
Loosen motor bracket and
remove belts. Drain oil from crankcase (
Section
6.4.3.2
).
B.
Remove compressor sheave bushing and sheave
from the drive shaft. Remove key. File edges of key
way smooth to remove sharp edges which could cut
oil seal during removal.
C.
Remove the finned tubes from the cylinder head
(
Section 6.4.16
). Remove air inlet filter assemblies
from heads.
D.
Remove cylinder heads from cylinders by remov-
ing cap screws (
Section 6.4.6
).
E.
Before removing cylinder mark top of pistons near-
est flywheel, so that they can be reinstalled in same
position. Remove cylinder by removing bolts. Cylin-
der can be removed easily by twisting slightly back
and forth while pulling upward. Care should be taken
that connecting rod and piston does not become
damaged from striking metal when cylinder is
removed. The condition of cylinder, pistons, rings
and bearing fits can then be checked.
F.
Refer to
Section 6.4.7
. Remove end cover and
slide crank shaft with connecting rods, pistons, etc.
out of base being careful not to damage the oil feeder
ring. Place pulley end of crankshaft in a soft jaw vice
to prevent damage.
G.
Refer to
Section 6.4.8
. To remove pistons:
Remove roll pins by driving them into the wrist pins.
Push out wrist pins. Remove roll pins from wrist pins.
H.
When removing connecting rods see that rods and
caps are kept in matched sets, noting the position
with reference to the crankshaft of the identification
marks on one side of each so that the connecting rod
can be replaced in the same position it originally
occupied.
I.
Drive oil seal out of base (only if replacement is
necessary) with evenly spaced blows from inside.
WARNING
Before performing maintenance:
Shut down machine, relieve all system
pressure and lock out all power, as per
the Safety Section of this manual. If
machine is hot, allow package to cool
before removing any panel.
NOTE THAT THE SYSTEM CAN BE
STARTED REMOTELY:
Always clearly tag the start-up
instrumentation against accidental
system start-ups during maintenance.
NOTE
Before dismantling the compressor for
overhauling it is advisable to obtain a set
of valve parts, piston rings and gaskets,
in addition to other required parts.
Consult
Table 8A: Recommended Spare
Parts List
to obtain ordering information.
IMPORTANT
Because of the risks involved with
manually re-adjusting the pressure
switch settings, the switch cover
contains a tamper-proof seal, and should
not be breached for any reason.
Breach of the seal will VOID the warranty.
Manual #99905382 Rev 02
(JUNE 2018)
Summary of Contents for IMT CAS40P
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