5
R. 06/23 836 867
SAMOA Industrial, S.A. · Pol. Ind. Porceyo, I-14 · Camino del Fontán, 831 · 33392 - Gijón - Spain · Tel.: +34 985 381 488 · www.samoaindustrial.com
2023_06_22-17:30
MAINTENANCE
REPLACING CAM ASSEMBLY O-RING
Disassemble valve first as described in the previous section.
Then unscrew the screws of the lock pawl (4) and the cam (5) to remove the
trigger (6).
To avoid damaging the o-rings, push out the cam (7) on one side until only the
o-ring of that side (8) is visible. Remove the o-ring and then fully remove the cam
with the other o-ring (9) on the opposite site.
To assembly, proceed the other way around taking care with the o-ring
of the cam.
To avoid damage to the o-rings in the cam assembly, it must be mounted a
single ring (9) on cam (7) and then place the cam in the gun by the end
without o-ring. Push gently the cam until the end without o-ring appears on
the side of the gun, with special care that only the groove of the o-ring poke
out. Introduce the o-ring (8) and place the shaft in position.
5
5
7
8
4
6
7
9
7
9
8
7
Problem
Cause
Solution
No fluid passing
through the meter.
Blocked strainer.
Remove the strainer and clean any dirt particles.
Replace if necessary.
Dirt particles jamming the wetted parts rotors.
Dismantle wetted parts of the meter assembly and clean.
Low flow rate.
Blocked strainer.
Remove the strainer and clean any dirt particles.
Replace if necessary.
Low oil supply pressure
Increase oil supply pressure.
Low accuracy
Dirt in chamber.
Dismantle metering chamber assembly and clean.
Any parts of metering chamber are worn or damaged.
(*) Replace the complete metering chamber assembly.
Valve will not close Foreign material on valve seal. Valve seal worn or damaged.
Disassembly the valve for inspection.
If it is not damaged clean seat valve, otherwise replace the valve.
Leaking at nozzle
Nozzle is open. O-rings worn or damaged.
Manually close the nozzle. Replace nozzle.
Leakage at cam
O-rings worn or damaged.
Replace o-rings.
Leakage at swivel
The swivel is loose.
Tighten swivel assembly.
Swivel o-ring worn or damaged.
Replace o-ring.
Packing gland leak. O-rings worn or damaged.
(*) Replace packing gland kit.
(*) To replace the complete metering chamber assembly and packing gland kit contact tech support.
TROUBLESHOOTING