SECTION 6 | TROUBLESHOOTING FLOWCHARTS
SECTION 6 | TROUBLESHOOTING FLOWCHARTS
Does machine
elevate?
Does the
pump run?
Not At All
Ascent speed
slow or erratic?
Is the
emergency down
valve open?
Is hydraulic
fluid low?
Yes
No
Yes
Contact
Hy-Brid Lifts
Is battery fully
charged?
Are any structural
members bent?
Contact
manufacturer to
arrange
replacement.
Is there a restriction in
hydraulic hose?
Yes, but
not properly
Is up/down
switch
damaged?
Starts ascending,
then stops?
Is platform
overloaded?
Yes
Can you see
anything
obstructing the
components?
Are power connections
to elevate circuit and
switches functioning
properly?
Flowchart-HB-1230-Elevating
Troubleshooting Step 3A: Elevating
Remove
obstruction
Yes
No
Yes
Replace damaged
rocker switch at
upper or lower
control.
Goes up, but
comes down
Replace or
repair identified
problem. See
Parts List
.
No
Time and parts
available?
Yes
Replace Pump
Assembly
Does pump operate?
Try replacing
up valve
No
Close
emergency
down valve
Is there a different
problem? (something is leaking,
unusually noisy, etc.)
Remove overload. Lower to
stowed position before
continuing use.
Yes
No
Yes
Yes
Replace pump
assembly. May
be worn or
defective.
Troubleshooting Flowcharts--General Notes:
Inspect parts for visible damage as they are encountered.
After each step, check if problem has been indentified and/or resolved.
If so, make the recommended fix or see a referenced document.
If not, continue troubleshooting.
If a part has been identified as needing replacement, see the
Parts View
To identify part number to order.
If any wiring or components have been altered from the original
manufacture, problems may not be identifiable.
WARNING
Any modification on this machine without
the express consent of the manufacturer
is prohibited.
WARNING
Failure to comply with safety precautions
may result in damage, injury, or death.
Refer to Maintenance Manual for
complete warnings
See also
Wiring Diagram
or
Schematic
Hydraulic Schematic
No
Check wiring connections in
elevate components.
See Electrical Schematic
Yes
WARNING
: Set up for maintenance safety:
Remove load from platform.
Check for overhead obstructions.
Platform movement may occur.
Never Reach between scissors links or prop up
platform unless maintenance pins are in place.
Check wiring
connections in
elevate
components.
See Electrical
Schematic
No
No
Yes
No
No
Level of skill
with hydraulic
maintenance?
See Lowering
Problems
Flowchart
No
Are power
connections to
elevate circuit and
switches functioning
properly?
Replace or
repair identified
problem. See
Parts List
.
Check Hydraulic Circuit.
(Additional tools and higher
level of skill required) See
Hydraulic Schematic
No
Yes
Experienced
with hydraulic
systems
Not experienced
with hydraulics
No
Yes
Yes
Replace
hydraulic
hose.
Yes
Reference Revision A
Reference Revision A
`No
Do pothole
guards deploy?
Are any of these switches damaged?
Selector Switch (Upr Ctl)
Joystick (Upr Ctl)
Joystick Trigger (Upr Ctl)
Does
oscillating axle
lock?
No
Replace or repair
identified problem. See
Parts List
.
Remove
obstruction
Yes
No
Yes
Make sure unit is on a level surface
before elevating. Then check for
binding/damage in mechanism.
No
No
Charge
batteries.
Refer to
Diagnostic
Light Codes
in
Maintenance
Manual
What is the
diagnostic LED
flashing?
Flush down valve by
simultaneously pressing
up switch at base and
pulling manual e-down
override knob on down
valve for 30 sec.
There may be foreign
matter lodged.
With platform
lowered, fill pump
reservoir with
specified oil.
Is the unit on
an incline?
Move to
a level
surface.
No
6.3 | ELEVATE CIRCUIT
BY CUSTOM EQUIPMENT LLC
BY CUSTOM EQUIPMENT LLC
34
35
MAINTENANCE & TROUBLESHOOTING
HB-1230
SUPO-729
REV B
MAINTENANCE & TROUBLESHOOTING
HB-1230
SUPO-729
REV B
