OPERATOR INSTRUCTION MANUAL
IM_HP_EX_Rev03_A4
HP350SMINEX; HP350DMINEX; HP550SMINEX;
HP550DMINEX; HP1000SMINEX; HP1000DMINEX
HYDRAULIC SEALED HAND PUMPS
16
THE TOOL THE HAND PUMP IS DRIVING IS
ADVANCING BUT DOES NOT REACH FULL
PRESSURE.
P O S S I B L E C A U S E :
Air could be present in the hydraulic system.
R E C O M M E N D E D A C T I O N :
Follow the airlock removal procedure:
1. Connect the hand pump to the tool with the
hydraulic hose.
2. Close the release valve on the pump, and prime
the pump until the hydraulic cylinder is fully
extended and a small pressure is achieved.
3. With the hand pump held above the tool and the
tool held in an upright position, open the release
valve. Any air that is within the system will be
forced up through the pump and vented into the
oil reservoir.
4. Repeat steps 1 - 3 three or four times to ensure
that all air is removed from the system and the
tool reaches full working pressure.
5. Disconnect the hand pump from the hydraulic
hose, grip the baseplate of the hand pump body
in a vice with the pump body vertical and the
main body at the top.
6. Remove the four nuts holding the main handle
and lift off.
7.
Grip the refilling plug with pliers and extract it
by pulling and twisting simultaneously. Ensure
the reservoir body is held down when removing
the refilling plug as pulling up on the reservoir
body will release the bladder within, and oil will
spill out.
8. Fill the reservoir to the top with a good quality
hydraulic oil of the grade 15 cSt.
9.
Reinsert the refilling plug, wipe away any oil
and reassemble by reversing the disassembly
process.
AIRLOCK REMOVAL PROCEDURE:
CLOSE RELEASE
VALVE
OPEN RELEASE
VALVE
NUTS
MAIN
HANDLE
OIL
RESERVOIR
ACTUATOR
COUPLER
