
Q12
Countersunk
side
Q10
Q11
Q8
Q9
Ed. 002 - 01/2017
Lower seal
• Remove the piston stem (
Q10
) and remove the pump unit
sleeve (
Q11
);
PIT STOP MAINTENANCE
Replacement of upper and lower gaskets 20 minutes.
• Lock the pump unit into a vice and unscrew it with a 50mm
wrench;
• Release the pump unit from the body of the suction valve;
• Grip the stem valve (
Q12
) in a vice;
• Unscrew the pump unit (
Q8
) from the frontal flange (
Q9
).
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