5
MAINTENANCE
LEATHER DUST SEAL (POS.10)
The seal must be kept under adequate pressure to protect the bearings. It must never be allowed to
wear trough. On a new tool with your choice of abrasive, check the leather dust seal every 3 hours
for wear. Drag should be checked before the cleaning of each new pipe.
To replace the leather dust seal, loosen lock nut (pos.14) and unscrew the rubber lined nipple
(pos.13). Now remove the rear end plate (pos.11).
Be careful with the tungsten Carbide washer (pos.12), do not drop it.
Clean the exposed bearing seal (pos.9) and the grooved end to the tube casting (pos.6).
Lubricate the exposed parts with Vaseline or cup grease and install a new leather seal (pos.10) with
the smooth side towards the bearing seal (pos.9)
Also when you replace the bearing seal (pos.9) position the lip inside the bearing to the end off the
tube (pos.6) on the side off the rera end plate (pos.11). After re-assembly, set the proper drag.
TUNGSTEN CARBIDE WASHER (POS.12)
Replace the washer before the opening gets wider than the one of the tube casting.
NOZZLES (POS.29-33)
Rotate both blast nozzle ¼ turn each day to create even nozzle wear for longer nozzle life.
(Mounting the nozzle you can use Teflon tape)
NOZZLE HEAD (POS.1) AND PLUG (POS.2)
Replace the nozzle head plug (pos.2) every 8 hours, unless experienced longer or shorter
life (life is influenced by operating pressure, type of abrasive and type of nozzle).
Also replace the nozzle head when it’s worn out. When removing or replacing either the nozzle
head or plug, remove the set screw (pos.17) from the brake housing (pos.3) and insert a proper size
screwdriver into the hole to prevent the tube casting from turning.
BRAKE LINING (POS.5)
Inspect this part daily. Replace before it wears so thin that it damages the brake shoe or housing
(pos.3)
LOCKRING / BEARING SEAL (POS.7 & POS.9)
To replace tube casting (pos.6) or bearing (pos.8), the lock ring (pos.7) must be removed from the
tube after the bearing seal (pos.9).
Never re-use the lock ring (pos.7) or bearing seal (pos.9).
