Figure 12. Second stage section, exploded view.
35. First Stage Piston Disassembly (fig. 14)
e. Remove the ring (2) and the piston rings (1) from
the piston (3).
a. Unscrew the plug (4) from the crankcase and
remove the preformed packing (5).
36. Keystone-Crankshaft Section Disassembly (fig.
b. Remove ring (6) using ring pliers; remove the
piston pin, ring, and shim assembly from the piston (3).
a. Unscrew the connector (22) from the adapter
c. Remove the ring (7), shims (8, 9, and 10) from
(3).
the piston pin assembly (11).
b. Unscrew the four screws (1) and washers (2)
d. Remove the piston and piston ring assembly
and remove the adapter (3) from the compressor
from the first stage cylinder bore.
assembly. Remove the preformed packing (4) from the
f. Remove the valve plate (15), gasket (1), valve
adapter.
(2), spacer ( 3) and shim (4) from the crankcase.
AGO 5548A
22