Upright SB-80, Руководство по обслуживанию и запасным частям

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SB80 Work Platform - European 4-1
S e c t i o n 4
T
ROUBLESHOOTING
4.1 I
NTRODUCTION
This manual cannot cover all possible problems that
may occur. If a specific problem is not covered in this
manual, call our toll free number for service assis-
tance.
Referring to Section 2.0 and 5.0 will aid in under-
standing the operation and function of the various
components and systems of the SB80 and help in
diagnosing and repair of the machine.
Troubleshooting Procedure
Determine whether the problem is mechanical (inter-
ference), electrical or hydraulic. Some functions
require power at more than one solenoid.
Thoroughly study hydraulic and electrical schematics
in
Section 5 . Check for loose connections and short
circuits. Check/repair/replace each component in the
Truth Table which is listed under each machine func-
tion which does not operate properly.
Use the charts on the following pages to help deter-
mine the cause of a fault in your UpRight SB80.
1. Verify your problem. Do a full function test from
both platform controlsand chassis controls and
note all functions thatare not operating correctly.
2. Narrow the possible causes of the malfunction.
Use the troubleshooting guide to determine
which components are common to all circuits that
are not functioning correctly.
3. Identify the problem component. Test compo-
nents that are common to all circuits that are not
functioning correctly. Remember to check wires
and terminals between suspect components. Be
sure to check connections to battery negative.
4. Repair or replace component found to be faulty.
5. Verify that repair is complete. Do a full function
test from both platform and chassis controls to
verify that all functions are operating correctly
and machine is performing to specified values.
NOTE: Protection diodes have been left out of the
tables to eliminate confusion.
U
P
R
IGHT
USA T
EL
: 1-800-926-5438
FAX: 1-559-662-4785
U
P
R
IGHT
T
EL
: +353 1 620 9300
FAX: +353 1 620 9301
Adjustment Procedures
Hydraulic settings must be checked whenever a com-
ponent is repaired or replaced.
Remove counter balance valves and “bench test”
them if they are suspect.
Connect a pressure meter of appropriate range to the
test port located on the right side of the hydraulic
manifold.
Correct pressure settings are listed in the Section 5.
Refer to SuperFlex Optimizer settings listed in Super-
Flex manual supplied with Optimizer.
Checking Pump Pressures
DRIVE PUMP
Check charge pressure at tee added to charge filter
line.
To check drive pressure, connect pressure tester to
port “G” on the 2 speed/Axle lock valve block.
LIFT PUMP
Test the Lift Pump pressure at the test port on the
main valve block. Cycle jib completely and continue
to hold switch. Pressure reading should equal main
relief setting.
W A R N I N G
! !
When troubleshooting, ensure that the work
platform is resting on a firm, level surface.
When performing any service which requires
the Platform to be raised, the Elevating Assem-
bly must be blocked.
Dsconnect the battery when replacing or testing
the continuity of any electrical component.