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TL49J
OUTRIGGER RAM
The outrigger ram is fitted with two check valves. They require no adjustment. If the outrigger is not
holding under load, it is most likely that the check valve for the full bore side is leaking. The check
valves are difficult to get to as the block is tucked away on the underside of the ram.
•
With the outrigger retracted, remove the rod pin.
•
Swing down the outrigger to remove the cylinder.
•
Both check valves are identical. Swap them over to determine if the cylinder stops moving.
The full bore check is performed to ensure that the outriggers stay down when the booms have been
lifted (#2).
The annular side checks are performed to enure that the outrigger remains vertical when towing the
machine (#1).
The restrictor is critical to prevent the outrigger from juddering when raising the outrigger to the
transport position. Do not replace with a non restricted hose adapter (#3).
PLATFORM CONTROL VALVE
The in-line check valve is found below the manual hand pump. The valve prevents the oil from flow
-
ing back down the pressure line when operating the hand pump. The relief valve is set at 190 bar
and should be adjusted in accordance with the set up procedure.
To adjust the pressure, remove the cap of the relief valve and screw the adjusting screw inwards to
increase pressure and outwards to decrease pressure. Place the cap back after adjusting.
The spools are all the same and are closed centred in the neutral position. It is critical that the valve
block does not leak internally when in the neutral position. Note that there are two valve blocks with
each connected together at the lift cylinders. If the ground valve is not leak free with the spool in the
neutral position when operating the platform valve, the oil will not flow into the cylinder but leak out
through the ground valve. The same scenario applies for operating the ground controls when the
platform valve is leaking internally. This can also occur if the spool is not properly centralised by the
spring at the end of the spool.
In a situation where the ground controls function well but the operation of the boom from the platform
controls does not work, then the valve responsible for making the booms lift/lower is the faulty valve.
SERVICE AND REPAIR
Figure 3-8
: Outrigger cylinder with welded on block containing the two check valves. The
restrictor shown is the hose adaptor fitted in the outrigger control valve.
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Содержание TL49-01-008562
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Страница 73: ...Page 4 1 TL49J TROUBLESHOOTING CONTENTS FAULT FINDING 4 2 FAULT FINDING MATRIX 4 4 Courtesy of Crane Market ...
Страница 84: ...Page 5 2 TL49J SCHEMATICS TL49 BATTERY PG ELECTRIC SCHEMATIC 513354 001 Courtesy of Crane Market ...
Страница 85: ...Page 5 3 TL49J SCHEMATICS TL49 PETROL PG ELECTRIC SCHEMATIC 513354 002 Courtesy of Crane Market ...
Страница 86: ...Page 5 4 TL49J SCHEMATICS TL49 DIESEL PG ELECTRIC SCHEMATIC 513354 003 Courtesy of Crane Market ...
Страница 87: ...Page 5 5 TL49J SCHEMATICS TL49 BI PETROL PG ELECTRIC SCHEMATIC 513354 004 Courtesy of Crane Market ...
Страница 88: ...Page 5 6 TL49J SCHEMATICS TL49 BI DIESEL PG ELECTRIC SCHEMATIC 513354 005 Courtesy of Crane Market ...
Страница 89: ...Page 5 7 TL49J SCHEMATICS TL49 MAINS PG ELECTRIC SCHEMATIC 513354 006 Courtesy of Crane Market ...
Страница 90: ...Page 5 8 TL49J SCHEMATICS TL49 MAINS GENSET PG ELECTRIC SCHEMATIC 513354 007 Courtesy of Crane Market ...
Страница 100: ...Page 6 6 TL49J SLEW BI FUEL POWER ILLUSTRATED PARTS LIST Figure 6 4 Slew Bi fuel assembly Courtesy of Crane Market ...
Страница 102: ...Page 6 8 TL49J ILLUSTRATED PARTS LIST SLEW MAINS POWER Figure 6 5 Slew mains assembly Courtesy of Crane Market ...
Страница 104: ...Page 6 10 TL49J ILLUSTRATED PARTS LIST SLEW BATTERY POWER Figure 6 6 Slew battery assembly Courtesy of Crane Market ...
Страница 106: ...Page 6 12 TL49J ILLUSTRATED PARTS LIST SLEW ENGINE POWER Figure 6 7 Slew engine assembly Courtesy of Crane Market ...
Страница 108: ...Page 6 14 TL49J ILLUSTRATED PARTS LIST LOWER BOOM Figure 6 8 Lower boom assembly Courtesy of Crane Market ...
Страница 110: ...Page 6 16 TL49J ILLUSTRATED PARTS LIST TOP BOOM Figure 6 9 Top boom assembly Courtesy of Crane Market ...
Страница 114: ...Page 6 20 TL49J STEEL CAGE ILLUSTRATED PARTS LIST Figure 6 12 Steel cage assembly Courtesy of Crane Market ...
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