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REPLACEMENT OF THE PUMP CARTRIDGE
When removing the pump cartridge, make sure the hydraulic and lubricant
systems are depressurized.
To be able to remove the pump cartridge from the pump housing, you must remove the
lock screw (a70) using an 8mm hex key wrench. To pull out the pumping element, use
a 12mm bolt (OO). Screw the bolt into the thread (
49
) at the outside end of the pump
cartridge (a11).
NOTE: When installing the new pump cartridge, be cautious that no dirt gets into
the pump. Also, the key (c7) located on the pump cartridge housing must
be in the groove in the housing.
Then insert the pump cartridge into the body bore so that the key locks into the groove
in the pump housing. Install and lubricate the oring (RR) and backup ring (SS) on the
lock screw (a70). Secure the pump cartridge with the lock screw (a70).
NOTE: When using chisel paste, you must replace the pump cartridge after
approximately 1000 to 1500 service hours due to the solids content.
