Troubleshooting - Urrea 2492 Manual De Usuario Y Garantía

E N G L I S H
protected from aggressive environments.
Only original spare parts should be used.
Before each use, check for bent, broken,
cracked or loose parts. Remove the Shop
Crane from service if you suspect it has
been subjected to abnormal loads or has
suffered a blow, until you have fixed the
problem.
The oil level needs to be checked or
continuously filled, remove the hydraulic
unit and the piston fully retracted,
remove the filler plug hole and empty
the contents into a bowl. With hydraulic
horizontally, proceed to introduce the
necessary volume. Avoid getting dirt
with the new oil.
IMPORTANT: An excess of oil on the
required volume
operation of the Shop Crane. Use
hydraulic oil (F), HL or HM type, with
an ISO viscosity grade Maximum 30 cSt
kinematic at 40, or a viscosity of 3 Engler
at 50° C .
DO NOT USE BRAKE FLUID.
OPERATING INSTRUCTIONS
It is possible that air has got into the
hydraulic system, causing poor lifting
performance, purge any air from the
system by fully opening release valve
(turn handle counterclockwise), then
while holding the jib down, operate
pump handle rapidly several times.
To raise load
• Close release
overtighten.
8
can prevent the
valve do not
To lower load
• Open release valve by turning
handle very slowly, the speed of
lowering the load is controlled by
how much you turn the handle.
When the Shop Crane is not running, it
should be fully retracted in the lowest
position to minimize oxidation of the
piston.
We recommend applying an antioxidant
in both the main piston and in pump.
Keep the Shop Crane in a clean, dry
place.
TROUBLE SHOOTING
PROBLEM Will not hold load
CAUSE SOLUTION
• Lower lifting jib. Close the
release valve and remove oil
filler plug.
• Place one foot on the leg and
Dirt on valve
pull up the lifting jib to its full
seats.
height by hand.
• Open the release valve to
lower the lifting jib.
• Worn seals.
PROBLEM Will not lift load
CAUSE SOLUTION
• Open the release valve and
remove oil filler plug.
Air block
• Pump handle a couple of full
strokes and close the release
valve.
PROBLEM Pump will not lift to its full
height
CAUSE SOLUTION
The reservoir • Check the oil level.
could be
over filled • Remove the filler plug.
PROBLEM Will not lower completely
CAUSE SOLUTION
Air block • Release air from hydraulic
pump by removing filler plug.
Unit requires • Oil external moving parts.
lubrication