Maintenance
All
S
P Rock Valve Model
s
Startup 250:Users:Danny:Desktop:Operation manuals:line
pumps:All SP Rock Valve models:Frame files:Maintenance.fm
Operation Manual -
109
S
etting the agitator pre
ss
ure
The agitator circuit has a maximum pressure of 125 bar
(1812 PSI), limited by the relief valve located in the
agitator hand valve (Figure 50). There is a gauge port
for checking or setting the pressure in this circuit. The
port is located on the agitator hand valve.
To
s
et the circuit pre
ss
ure:
a. Stop the unit, and put the key in your pocket.
b. Remove one of the hoses from the agitator
motor and plug both the hose and the fitting
with high pressure hydraulic plugs (this step
can be skipped if you have installed a quarter
turn valve as shown in Figure 41 on page 97. In
that case, simply close the quarter turn valve).
c. Install the 0-300 bar gauge on the hose.
d. Locate the relief valve on the agitator hand
valve.
e. Be sure that any personnel are clear.
f. Restart the engine and bring it to full RPM.
g. Activate the agitator hand valve. This will send
the oil against the high pressure plug. The oil
will have nowhere to go, so it will return to the
tank over the relief valve in the hand valve.
The pressure at which it relieves can be seen
on the gauge. It should read 125 bar.
h. To adjust the pressure, use a 13mm wrench to
loosen the jam nut and a 4mm allen wrench to
turn the relief valve. Turn it clockwise to
increase pressure, or counter clockwise to
decrease pressure, until 125 bar is showing on
the gauge.
i. Return the agitator hand valve to the neutral
position.
j. Stop the engine and put the key in your pocket.
k. Remove the high pressure plugs and fittings
from the agitator hose and reinstall the hose on
the agitator motor.
l. Remove the pressure gauge. Replace the gauge
port cover.
m. The unit can now be restarted, if necessary.
Don’t forget to put the key back in the engine
before you go home.
Clean the oil cooler fin
s
Spray out the coils of the oil cooler with a high velocity
water nozzle, or pressure washer. If you use a pressure
washer, be careful not to get so close that you damage
the electric motor or bend the cooler fins.
Quarterly Maintenance
Change the engine oil, oil filter, fuel filter and check
the air breather element after the first 100 hours of
operation. Schwing recommends changing the oil and
filters every 500 hours or once a year, which ever
comes first. Schwing uses Mobile 10W-30 in all
engines. For specific grades of motor oil and general
maintenance of your engine, refer to your Duetz
operation manual.
SWG98n198.eps
Relief
valve
Allen
screw 4mm
Jam
nut 1
3
mm
Figure 50
S
howing the agitator hand valve and gauge port.
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Страница 8: ...Table of Contents Operation Manual All SP Rock Valve models viii revDate Home TOC TOC Print Print ...
Страница 14: ...Introduction Operation Manual All SP Rock Valve Models 12 revDate NOTES Home TOC TOC Print Print ...
Страница 70: ...Overview Operation Manual All SP Rock Valve Models 68 revDate NOTES Home TOC TOC Print Print ...
Страница 100: ...Operation Operation Manual All SP Rock Valve Models 98 revDate NOTES Home TOC TOC Print Print ...
Страница 126: ...Maintenance Operation Manual All SP Rock Valve Models 124 revDate NOTES Home TOC TOC Print Print ...
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