EN
UNI 30 E
17261 - 561.228
8 - MAINTENANCE
8
-
Pag.
6/6
THIS MANUAL IS PROPERTY OF
-
ANY TOTAL OR PARTIAL REPRODUCTION IS STRICTLY FORBIDDEN
Cap.
• Replacing the worn pump piston.
Make sure that the rubber gun has been stopped in the front part of the cylinder i.e. towards the valves.
Disassemble the flow and intake valves unit by loosening the screw (FIG.58-REF.1) that blocks it onto the hopper, the 3 screws
(FIG.58-REF.4) that connect it to the monolithic cylinder and the hose clamp (FIG.57-REF.2) that fix the rubber fitting, which
connects it to the intake connector.
To replace the worn rubber gun, slide it out from its seat loosening the nuts (FIG.59-REF.1) and retracting the piston guide rod,
by acting on the compressor large pulley.
Use a threaded bar to extract the piston by screwing it onto the piston itself and pulling.
Insert the new piston into the housing putting the guide rod in position and fixing it using the nuts (FIG.59-REF.1).
Once the piston has been replaced, re-mount everything following the procedure indicated above.
1
FIG.59
