Hydraulic System Checks
If the hydraulic system fails to operate
completely, or does so extremely slowly,
carry out the following procedures.
Check that the hydraulic tank is full of oil
to the correct level. The level is correct
when oil is 50mm from the top of the filler
neck.
Check that the filter has been regularly
cleaned in accordance with the
maintenance schedule. If not, clean filter.
Check that the hydraulic pressures are
correct as follows:
Tipping circuit
Fit a 2000 lb/in
2
gauge into the
hydraulic system at the base of a skip
ram.
Operate control lever to tip skip and
check the pressure reading on the
gauge when the rams are fully
extended and the relief valve is
‘blowing’. See “Specifications” for
correct pressure.
Steering circuit
Fit a 2000 lb/in
2
gauge into the
hydraulic system at the base of the
steering ram.
Turn the steering wheel until the
machine is at ‘Full Lock’ and check the
pressure reading on the gauge. See
“Specifications” for correct pressure.
If these procedures do not correct the
fault, contact your Distributor.
Periodically check the hose between the
pump and the hydraulic tank to ensure
that it is not deformed. Any deformation
in the hose may result in a restricted flow
and damage to the pump.
Every 10 operating hours, or
daily
Check hydraulic oil level
Do not check oil level before closing
the tipping rams, and the engine has
been stopped for 2 minutes.
Always clean the surrounding area before
removing the cap to prevent dirt from
entering the tank.
The oil level is correct when it is 50mm
(2”) from the top of the neck.
Do not overfill; it will cause leakage from
the breather!
First 100 operating hours
Clean / change tank strainer
WARNING Before cleaning the tank
strainer, stop the engine and
dump hydraulic pressure.
Place a clean suitable container beneath
the hydraulic tank strainer. Clean the area
surrounding the strainer.
Disconnect the hose, then carefully
unscrew the strainer (C) from the tank
allowing the oil to drain into the container.
3.16 SERVICE
HYDRAULIC SYSTEM
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