BM003-V2
5
• With no load on the pump,
the pump operates in the high
flow stage for fast advance of
the cylinder. When the load is
increased, the pump changes
automatically to the low flow stage
to allow for higher pressures. After
the pump changes, less force is
required on the handle.
• Except for PHD models, all
other models are designed
for use with single-acting
cylinders and are equipped
with an integral release valve.
1.
Close the release valve by
turning the knob clockwise until it
stops.
DO NOT OVERTIGHTEN.
2.
Open the release valve by
turning knob counter-clockwise
to release the pressure and allow
the oil to flow back to the reservoir
Two Stage Pumps:
•
If release valve knob is difficult to
turn or becomes stuck, discontinue
using pump immediately. Have
pump inspected and repaired by a
BOSS authorised dealer.
WARNING:
• Loosen oil plug several turns to
allow reservoir venting during
operation.
• Position the pump in the
horizontal position at a higher
level than the cylinder.
• Put cylinder in horizontal position
with port facing upwards.
• Advance and retract the cylinder 2
to 3 times to full stroke.
• Repeat steps 2 to 4 as needed to
ensure smooth operation of the
cylinder.
• Check the oil level of the reservoir
and add oil if necessary. See
section on Maintenance.
Air Bleeding:
