Page 29 of 42
9. Replacement of piston with connecting rod and piston rings
• Disconnect the pressure hose (1).
• Disassemble crank case cap (2), complete
cylinder head (3), spring (4), seat of
membrane (5) with O-ring (6) (2 pcs) and
carefully take out cylinder (7).
• Release screw (8) on connecting rod with
piston (9), eject connecting rod from bearing
(10) and take it out.
• Embed a new connecting rod with piston onto
the bearing (ca 1÷1.5 mm from crank), embed
cylinder (7) and ensure it with preparation (12)
with 2 pcs of screws, subsequently turn
several times with crank (minimally 10x),
check the position of connecting rod in piston
(11) and tighten the screw (8) on connecting
rod. If the position of connecting rod in piston
is not correct, it is necessary to adjust
connecting rod on bearing again and to tighten
screw on connecting rod.
• Disassemble the preparation for ensuring
piston, embed cylinder onto crank box, seat of
membrane (5) with O-ring (6) (2 pcs), spring
(4), complete cylinder head (3) and screw
screws (4 pcs) with washers (4 pcs).
• Turn crank several times, the mechanism of
connecting rod must move smoothly without
starts, fix the crank case cap (2) using screws
(6 pcs). Connect pressure hosee.
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