John Bean EELS904A - 9.0 Trouble Shooting

13 of 22 DECEMBER 2022 REV. D
EAZ0080V72A
9.0 Trouble Shooting
Trouble
Cause
Remedy
Pump runs but lift will
not rise after contacting
load.
Lift loaded beyond capacity.
Fluid leak at pump, hose or
cylinder
Pump malfunction.
Pump low on fluid.
Do not exceed capacity of lift list on tag.
Repair leak, refill reservoir.
Contact customer service to have pump
serviced.
Lower Jack Beam and check fluid level.
Replenish if required.
Pump will not start
when “UP” button is
pushed.
Insufficient air supply at
pump.
Leak in air supply line.
Restriction in air line (i.e. Kink)
Malfunctioning air motor.
Pump requires 90
–
120 psi of shop air.
Locate and correct leak.
Locate and correct restriction.
Contact customer service to have pump
serviced.
Pump runs but will not
lift to full height
Pump low on fluid.
Pump vent closed
Lower
Jack
Beam
and check fluid level.
Replenish if required.
Loosen metal vent knob on pump body
Lift
does not hold
pressure and will slowly
descend.
Fluid leak at pump, hose or
cylinder.
Lowering valve damaged.
Pump malfunction.
Repair leak, refill reservoir.
Replace damaged or missing parts.
Contact customer service to have pump
serviced.
Lift
lowers slowly or not
at all.
Mechanical Safety is engaged.
Restriction in hydraulic
system.
Release mechanical safety.
Contact customer service to have lift
serviced.
If
Jack
Beam
is in the raised position and will not come down, ensure that
the mechanical safety is engaged prior to servicing the lift. Failure to do
so can cause vehicle damage and/or personal injury.