McConnel ECON HEDGEMASTER Mk3, Руководство оператора

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4. Rotor keeps stalling during
cutting operation.
5. Oil leaking from
6. Noisy pump
7. Noisy motor
System Checks
Check 1:
Check 2:
Check 3:
a)
b)
c) All as section 3.
d)
e)
a) Motor seat burst caused by excessive back
pressure - see check-out two.
b) Pipe restricted - inspect and remove restriction or
replace pipe
a) Loose hose connections allowing air to be drawn
into pump - tighten connections.
b) Aerated or foaming oil - tighten connections,
change oil or allow to settle and oil/air to separate.
c) Faulty pump - see check-out one.
d) Weld cracked on standpipe - re-weld or replace.
a) Aerated or foamy oil - tighten all connections,
change oil or allow to settle and oil/air mixture to
separate.
b) Faulty motor - see check-out three.
Faulty relief valve or faulty pump.
Fit high pressure gauge to relief valve. Disconnect
hose connecting valve to motor at valve connection.
Operate valve manually and check pressure, setting
should be 2600 lb/in²
(179 Bar).
Faulty filter or blocked return on motor circuit.
Connect low pressure gauge. Start engine, run PTO
up to speed and should the gauge reading exceed 30
lb/in²
(2.0 Bar)
then the filter elements should be
changed. If this does not reduce the back pressure the
filter should be dismantled and the internal bypass
valve cleaned. Check hoses for blockage or kinking.
The average gauge reading during operation should
be 20 lb/in²
(1.4 Bar).
Faulty Motor.
If the pump is OK and relief valve is OK and there are
no leaks in the pressure lines but rotor is running
under speed, the motor may be faulty. It will either
need a new seal kit, if only a few years old or a new
motor. Try replacing the seals first as they are the
cheapest to replace.
If no significant improvement is obtained, replace
motor.