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H4960700 Date 20.11.08 Issue 002
31
TROUBLE SHOOTING
SYMPTOM POSSIBLE
CAUSE REMEDY
Loss of hydraulic system
power.
Emergency stop button
engaged.
Disengage
Power take off unit not fully
engaged.
Re-engage
Geared power take off unit
failure.
Test by replacement.
Main
hydraulic
pump
failure.
Test by replacement.
Relief valve blowing off.
Pressure setting incorrect –
reset to 190 Bar.
Stabilisers can be
deployed/ stowed but no
hydraulic power to boom.
Leg set switch failure.
Test using a multi meter
renew if necessary.
Cables damaged.
Test using a multi meter,
renew if necessary.
Dump
valve
solenoid
failure.
Test using a multi meter,
renew if necessary.
Hydraulic oil overheating
Hydraulic oil reservoir
contents low.
Replenish.
Worn main hydraulic pump
Connect a flow meter and
pressure gauge to the
pressure side of the
hydraulic pump – the pump
delivers approx. 8 ltrs/min
@ 190 Bar – if necessary
renew.
Relief valve blowing
Reset at 190 Bar
Whilst operating the
platform the stabiliser legs
creep upwards
Lock valve leakage.
Stop operating as soon as
possible, stow stabilisers
and renew the
malfunctioning lock valve
cartridge.
DO NOT
OPERATE PLATFORM
UNTIL FAULT IS
RECTIFIED.
Platform booms creep
downwards
(cont)
Lock valve leakage.
Stop operating the platform
as soon as possible, stow
platform and renew, the
Содержание VM 135
Страница 15: ...H4960700 Date 20 11 08 Issue 002 15 PLATFORM CAGE CONTROLS...
Страница 34: ...H4960700 Date 20 11 08 Issue 002 34 ILLUSTRATED COMPONENT LAYOUT AND PARTS LISTS...
Страница 37: ...H4960700 Date 20 11 08 Issue 002 37 SUBFRAME STABILISER ASSEMBLY...
Страница 42: ...H4960700 Date 20 11 08 Issue 002 42 CRADLE WEIGHING SYSTEM ASSEMBLY...
Страница 45: ...H4960700 Date 20 11 08 Issue 002 45 VM135 HYDRAULIC CIRCUIT...
Страница 46: ...H4960700 Date 20 11 08 Issue 002 46...