REED 00 C50SS, Manual, Page: 56 / 84

REED
00 MODEL:
C50SS
TRAILER CONCRETE PUMP
MAINT
PAGE 26
ADJUSTMENTS TO HYDRAULIC SYSTEM
1. MAIN HYDRAULIC PUMP
The main hydraulic pump is manufactured by Sundstrand and all internal adjustments and
settings have been made by Sundstrand to
REED specifications. No further adjustments
are required. Should it become, at some point, necessary to make adjustments, refer to
the Sundstrand pump data located in the
VENDOR SECTION of this manual.
DO NOT OPERATE CONCRETE PUMP WITHOUT OIL
OR WATER IN THE FLUSH/WATERBOX.
2. PRESSURE LIMITER RELIEF VALVE-SET @ 4200 PSI/294 BAR
Two (2) relief valves have been installed in the system to limit and protect the main system
from excessive pressure. The valves, one for each of the hydraulic drive cylinders, are
located on the right side, just behind the engine and adjacent to the main hydraulic pump.
To check or adjust the valves to the proper setting, proceed as follows:
A. CHECKING THE PRESSURE
•
Start engine and adjust THROTTLE to maximum RPM .
•
Place CONTROL LOCATION switch to LOCAL .
•
Rotate VOLUME control to full ON position.
•
Actuate PUMP switch to ON .
•
On the control box actuate the switch to the CYL “A” position and HOLD .
•
While doing this, observe the CYL “A” pressure gauge located at the bottom of the
hydraulic tank. Gauge should register 4200 PSI.
•
Actuate CYL “B” switch and observe the pressure gauge. It too should register
4200 PSI.
• Turn PUMP switch to OFF position.
• If pressure on either gauge does not read 4200 PSI, then an adjustment is necessary.
REVISION: