KREMLIN REXSON
Page 40
Manual : 573.199.112
19. DISASSEMBLY & REASSEMBLY - PU 3000 AIRLESS
CAUTION : Before any work is carried on the pump, stop the machine after
carrying out flushing, shut off the compressed air supply and depressurize the
circuits triggering the gun.
The pump is manufactured under the ATEX agreement and can not be modified.
KREMLIN REXSON will not be held responsible for any failure to comply with that
instruction.
MIXER
Unscrew the mixer assembly and replace it with a new one.
ASI 40 VALVES (REFER TO DOC. 573.062.050)
FLUID PACKING (22) AND NEEDLE WITH BALL (37)
Unscrew the diaphragm (9), the seat-holder assembly (17).
Take off the 2 screws (13).
Disassemble the needle holder (23) from the needle strainer (6) to remove the front body (1) from the
gun.
Take off the circlip (26) holding the fluid packing (22).
Remove the fluid packing (22) pulling the needle frontwards.
Unscrew the ball needle (37) from the needle holder (23).
Change the fluid packing and its seal (24).
Clean the front part of the gun.
When assembling, drive fluid packing (22) by pushing it from the front part to the rear part of the body
(1) until the packing shoulder comes to lean against the shoulder located inside the gun.
Then, secure the fluid packing by means of the circlip (26).
Reinstall the ball needle (37), the screws (13), the seat-holder assembly (17), the diaphram (9), the tip
and the coupling nut (8).
PISTON ASSEMBLY (27)
Unscrew the 4 screws (11).
Remove the spring guide (3) and the cylinder (2).
Take off the spring (7), the spring support (33).
Unscrew the nut (31).
Remove the washer (30) and the piston packing (29).
Clean the parts and change them if necessary.
Nota : Before inserting the piston assembly (27) into the
cylinder, the packing lip (29) must be shaped by hand as
shown opposite (cartridge turned up on the piston).
28
29
30
31
32
AIR PACKING (34)
Take off the back part of the gun and remove the piston as explained before.
Remove the air packing (34).
Replace the packing seal (36) or the air packing assembly.
Nota : when changing the ASI 40 valve from the PU 3000 fluid equipment, take off the fittings from the
spare valve delivered, then install it on the fluid equipment.