Maintenance
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(P305):pHseriesMAINTENANCE.fm
47
Operation Manual - SP 305
Monthly maintenance
Grease the two fittings of the crank arm lever monthly
(Figure 34).
Check mounting hardware
Check the mounting hardware of the subframe, the oil
tank, the pumpkit, the differential cylinders, and the
material cylinders. Check for bolt tightness, cracks and
other abnormalities.
Check hydraulic pressures
Check all hydraulic pressures. The specifications for
each circuit are shown below and on the hydraulic
schematic that applies to that circuit. The schematics
are all contained in the Appendix section of this
manual. Changes in pressures may indicate trouble in
one or more components and will serve as early
warning indicators IF you check them on a regular
basis. PRESSURE SETTINGS MUST BE MADE
WITH THE OIL AT NORMAL OPERATING
TEMPERATURE (40° to 60° C). To heat the oil to
operating temperature:
1. When the oil is very cold (at or below the pour
point of your hydraulic oil), Bring engine RPM
to an idle and let the engine idle until the temp.
gauge on the operator’s panel reads 20°.
2. When the oil is warm (40° C on the temperature
gauge of the operator’s panel), The pressure can
be checked and assumed to be accurate.
Setting the concrete pump pressure
The concrete pump pressure is preset at the factory and
should not require adjustment. The pressure cut-off on
the hydraulic pump is set at 2500 PSI and the
redundant relief is 2900 PSI. If you feel that your pump
has a pressure problem, contact the Schwing America
Service Department at the Call Center (888-Schwing).
Clean the oil cooler fins
Spray out the coils of the optional 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.
Grszerk.eps
Grease Zerks
Figure 34
Grease zerks on the crank arm lever
should be greased monthly
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