4-8
AB62 Work Platform - European
T
ROUBLESHOOTING
Section
4.4
4.4 H
YDRAULIC
T
ROUBLESHOOTING
The AB62 has three independent hydraulic systems:
one for drive; one for high flow lift functions; and one
for low flow lift functions. The drive system uses an
electrically controlled, variable displacement piston
pump that powers four piston type wheel motors. The
high flow system uses a gear type pump to power
riser up/down, boom extend/retract, and steer func-
tions. The low flow system, also using a gear type
pump, operates Boom up/down, Jib up/down, Swing
right/left, Cage rotate and Cage level.
High flow and low flow system pressures can be veri-
fied by connecting a 3000 PSI gauge to the upper
port on the valve block. Operate Riser down to test
high flow system or Jib up to test the low flow system.
Operate function until it stops and system bypasses.
The high flow relief valve is located just below the
gauge port.
The low flow relief valve is located below the high
flow relief valve.
High flow pressure, 2700 PSI.
Low flow pressure, 1400 PSI.
W A R N I N G
!
!
Counterbalance valves must never be removed
if the platform is raised and hydraulic system is
under pressure. Be sure the platform is com-
pletely stowed before removing counterbalance
valves.
Содержание ab62
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Страница 4: ...ii AB62 Work Platform European FOREWORD NOTES ...
Страница 42: ...3 24 AB62 Work Platform European MAINTENANCE Section 3 13 NOTES ...
Страница 56: ...4 14 AB62 Work Platform European TROUBLESHOOTING Section 4 4 Notes ...
Страница 61: ...AB62 Work Platform European 5 5 SCHEMATICS Section 5 1 Notes ...
Страница 73: ...Page 6 3 Illustrated Parts Breakdown Final Assembly AB62 Diesel AB62 Work Platform European Drawing 1 of 2 ...
Страница 74: ...Page 6 4 Illustrated Parts Breakdown Final Assembly AB62 Diesel AB62 Work Platform European Drawing 2 of 2 ...
Страница 75: ...Page 6 5 Illustrated Parts Breakdown AB62 Work Platform European NOTES ...
Страница 77: ...Page 6 7 Illustrated Parts Breakdown Basic Assembly AB62 Diesel AB62 Work Platform European ...
Страница 79: ...Page 6 9 Illustrated Parts Breakdown Chassis Assembly AB62 Work Platform European ...
Страница 81: ...Page 6 11 Illustrated Parts Breakdown Front Axle Assembly AB62 Work Platform European ...
Страница 83: ...Page 6 13 Illustrated Parts Breakdown Elevating Assembly AB62 Work Platform European ...
Страница 85: ...Page 6 15 Illustrated Parts Breakdown Linkage Assembly AB62 Work Platform European ...
Страница 87: ...Page 6 17 Illustrated Parts Breakdown Straight Boom Assembly AB62 Work Platform European ...
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Страница 91: ...Page 6 21 Illustrated Parts Breakdown Turret Assembly AB62 Work Platform European ...
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Страница 97: ...Page 6 27 Illustrated Parts Breakdown Cover Assembly AB62 Work Platform European ...
Страница 100: ...Page 6 30 Illustrated Parts Breakdown Upper Controller Assembly AB62 Diesel AB62 Work Platform European Drawing 2 of 4 ...
Страница 101: ...Page 6 31 Illustrated Parts Breakdown Upper Controller Assembly AB62 Diesel AB62 Work Platform European Drawing 3 of 4 ...
Страница 102: ...Page 6 32 Illustrated Parts Breakdown Upper Controller Assembly AB62 Diesel AB62 Work Platform European Drawing 4 of 4 ...
Страница 103: ...Page 6 33 Illustrated Parts Breakdown AB62 Work Platform European NOTES ...
Страница 105: ...Page 6 35 Illustrated Parts Breakdown Lower Controller Assembly AB62 Diesel AB62 Work Platform European Drawing 1 of 3 ...
Страница 106: ...Page 6 36 Illustrated Parts Breakdown Lower Controller Assembly AB62 Diesel AB62 Work Platform European Drawing 2 of 3 ...
Страница 107: ...Page 6 37 Illustrated Parts Breakdown Lower Controller Assembly AB62 Diesel AB62 Work Platform European Drawing 3 of 3 ...
Страница 111: ...Page 6 41 Illustrated Parts Breakdown Control Module Assembly AB62 Work Platform European ...
Страница 139: ...Page 6 69 Illustrated Parts Breakdown Label Kit AB62 Diesel AB62 Work Platform European ...
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