pela tools 494628, Manual, Page: 8 / 11

Flushing the valves
Sometimes dust or particles can get stuck
inside the hydraulic pump which prevents the
valves from closing properly. That leads to a
reduction in power. Then clean the valves as
follows:
1.
Lower the ramp and close the lowering
valve.
2.
Pull up the ramp 5–10 cm and then open
the lowering valve.
3.
Push down the ramp as soon as possible.
Rust protection
Make sure that the piston, pump and adjusting
screw are in the bottom position when the ramp
is not in use. Avoid contact with moisture. If
the ramp gets wet, wipe it off and lubricate all
parts.
Troubleshooting
The ramp cannot lift at full capacity.
•
Check that the lowering valve is closed.
•
Check the oil level and top up if necessary.
•
Vent the system to release any air bubbles.
•
Flush the valves as described here.
The ramp sinks when loaded.
•
Check that the lowering valve is closed.
•
Flush the valves as described here.
Oil leaks from the oil plug.
•
Check the oil level and drain any excess oil.
The ramp feels spongy.
•
Check the oil level and top up if necessary.
•
Vent the system to release any air bubbles.
The pump lever goes up or strikes back when
the ramp is loaded.
•
Flush the valves as described here.
The ramp cannot lift up to full height.
•
Check the oil level and top up if necessary.
•
Vent the system to release any air bubbles.