5-20. COMPRESSOR REPAIR (Continued).
Remove unloader cover (10) and washer seal
Remove unloader pin (12), O-ring (13) and
Remove four bolts (15) holding cylinder head
assembly (3) to the cylinder block (2).
Lift head (3) off block (2) and remove gasket
Place the cylinder head assembly (3) on a table
and turn the assembly bottom sideways.
Remove exhaust valve seat (16) using a 3/4 inch
Remove valve (17), spring (18) and copper
Remove inlet valve cage (20) using a 3/4 inch
m. Remove valve (21), spring (22) and copper
Remove four bolts (24) and lockwashers (25)
holding cylinder block (2) to the crankcase
Lift the block off the crankcase (1) and remove
Turn the crankcase (1) on its side to expose the
connecting rod to crankshaft bolts (27).
Slowly rotate the crankshaft so that the con-
necting rod cap (28) is at the bottom of its
stroke. Remove the bolts (27), cap (28) and
Lift the piston (30) and connecting rod (28)
through the top of the crankcase (1).
Remove buttons (31) from piston wrist pin
Do not remove the piston wrist pin from the pis-
ton since the piston and rod must be replaced as
an assembly if either part is damaged.