6
The pressure relief valve is placed on the right side of the valve block.
1.
Connect the test equipment, start the powerpack and move the lever to “ON”.
Then close the valve - the pressure gauge must show 110 bar.
If the pressure relief valve does not show 110 bar, adjust the valve by loosening
the lock nut and turning the adjustment screw in or out. “In” increases the
pressure, and “out” decreases the pressure.
Retighten the lock nut after adjustment.
2.
When the pressure relief valve has been adjusted correctly, the working pressure
must be set at 100 bar by means of the valve on the test equipment. At 100 bar,
the oil flow should be 18 l. p.m. Adjust the flow on the powerpack by means of
the max. r.p.m. adjustment screw.
3.
The number of revolutions must not exceed 3300 r.p.m. at 18 l.p.m. If the
number is higher, there may be dirt in the pressure relief valve, or the pump may
be worn.
Problem
Cause
Solution
Powerpack does not give
the right oil flow, or r.p.m.
is too high
Pressure relief valve may be
clogged up or set incorrectly
Dismount pressure relief valve
and clean with compressed
air, or correct the setting of
the valve
Pump is worn
Replace pump
The maximum pressure of
the powerpack is too high
Wrong adjustment of
pressure relief valve
Adjust pressure relief valve to
110 bar (see instructions
above)
Hydraulic oil is foaming,
and oil is leaking at the air
filter on the filter housing
Leaking shaft seal in pump
Replace pump
Oil level too low
Add oil
Heavy vibrations because of
defective fan blade
or
defective rubber dampers
Replace defective parts
Too much oil in tank
Drain off oil from tank
Engine does not start
See engine manual
r.p.m. meter
Item No. 9992124
