MAINTENANCE AND SERVICE 19
equipment and experience checking and adjusting hydraulic
pressures should be left to your local distributors service personnel.
If the hydraulic system fails to operate completely or does so
extremely slowly, check the following:-
Check that the hydraulic oil tank is full of oil to the correct level.
Check that the coupling between the engine and pump is still
transmitting drive and has not broken.
Check that the suction hose between the tank and pump is not
damaged or deformed and restricting the flow of oil.
Check that the system for leaks, loose hoses or fittings can allow air
to be drawn into the system, causing the pump to cavitate and
operate erratically.
Check that the suction strainer has been regularly cleaned in
accordance with the maintenance schedule, if not clean the filter.
Check the hydraulic pressure is correct as follows:-
Fit a 0-3000 psi (0-207bar) pressure gauge into the hydraulic system
at the base of the tipping ram or scissor ram, or if more accessible,
at one of the hose connection to the control valve using a tee-piece
and short length of suitable hydraulic hose. Start the engine, move
the lever to activate the circuit into which the gauge was fitted and
check the reading on the gauge when the ram is fully extended and
the relief valve ‘blows off’,
see Technical Information section for
correct pressure.
If the reading is incorrect, adjust the relief valve setting to correct
the pressure.
If the above checks and procedures fail to rectify the fault contact
your local distributor.
If on releasing the operating lever to the neutral or hold position you
notice that the skip continues to either tip or lower, or the scissors
continue to raise or lower please refer the fault to your local
distributor, It is possible that a fault has developed in the internal
seals of the affected ram or within the control valve itself.
Summary of Contents for TD500
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Page 33: ...1 A 1 TD500 Dumper ...
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Page 49: ...1 A 1 TD500HL Dumper ...
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Page 53: ...1 A 2 TD500HL Dumper ...
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Page 57: ...2 B 1 TD500HL Dumper ...
Page 59: ...2 C 1 TD500HL Dumper ...
Page 61: ...2 R 1 TD500HL Dumper ...
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