Remove discharge valve cap nuts and lift out dis-
charge valve springs and valves.
The discharge valve seats can be removed, but it
i s not necessary unless they are badly worn or
nicked.
Figure g
OIL PUMP ROD AND PISTON
Crankcase
Remove cotter pin from oil rod cap nuts, remove
CRANKCASE (Fig. 9)
nuts, oil pump piston rod and cap.
Remove end cover with oil seal, remove end
cover gasket. Replace oil seal after cleaning end
cover.
Remove cap screws that hold opposite end cover
t o crankcase; remove end cover and its gasket.
S o m e compressors have crankcases that have a
shoulder for positioning the crankshaft. In these
cases the crankshaft must be removed through one
particular end.
Press the crankshaft and ball bearings from the
c r a n k c a s e then press ball bearings from crank-
shaft.
BLOCK (Fig. 8)
If compressor is fitted with an air strainer, inlet
Figure 8
elbow or governor, remove same.
Cylinder Blocks-Exploded View
Remove cap screws securing cylinder block to
crankcase; separate crankcase and cylinder block
and scrape off gasket.
ROD ASSEMBLIES (Fig. 8)
Straighten prongs of connecting rod bolt lock
Remove unloader spring, spring saddle and
washers and remove bolts, lock washers and bear-
spring seat from cylinder block.
ing caps.
Remove unloader guides and plungers and with
the use of shop air blow unloader pistons out of
Push piston with connecting rods attached out
cylinder block unloader piston bores.
the top of the cylinder block.
Remove inlet valve guides; inlet valve seats can
R e p l a c e bearing caps on their respective con-
be removed but only if they are worn or damaged
necting rods.
a n d are being replaced. Unloader bore bushings
should be inspected but not removed unless they
Remove piston rings from pistons.
are damaged.
If pistons are to be removed from connecting
CLEANING AND INSPECTION OF PARTS
rods, remove wrist pin lock wires and press wrist
pins from pistons and connecting rods.
CLEANING
All parts should be cleaned thoroughly in a good
Remove cap screws securing end cover at drive
cleaning solvent before inspection.
end of crankshaft.
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