Allied Skid-Pac 1000, Безопасность, эксплуатация, техническое обслуживание и запасные части, Страница: 30 / 44

Allied Construction Products, LLC www.alliedcp.com
TM103349_SP1000B_15sep 20
12.0 Technical Information
12.1 Testing the Hydraulic Circuit
The performance of the Allied work tool is impaired
by a hydraulic system that is not operating correctly
or set outside the accepted specifications.
Prior to first use, it’s important to assess the
performance of the machine's hydraulic circuit. The
overall objective of these tests is to validate the
hydraulic circuit and confirm it is properly calibrated
and set in accordance to the accepted specifications.
A series of tests are conducted under varied
conditions, including temperature, work mode, engine
speed and load. The results of these tests gives a
good indication of whether or not the carrier can
deliver the adequate hydraulic power needed to meet
the operating range of the Allied work tool. Tools
required to complete these tests include a flow meter
and pressure gages.
Record the test measurements in the worksheet
provided below.
Work Mode Engine RPM Flow [GPM] Load [PSI] Oil Temp [ºF] Relief [Crack] Relief [Static] Return [PSI]
0
1000
1500
1800
2000
2200
2400
2600
2800
3000
3200
3400
Work Mode
– Set to correct position (if equipped).
Engine RPM
– Set to normal operating speed
Flow [GPM]
– Record measured flow at each load
pressure
Load Pressure [PSI]
– Gradually increase load using
the restrictor valve on the flow meter
Oil Temperature
– Oil temperature must be at
normal operating temperature while testing. Stop test
if temperature exceeds 176

F (80

C)
Relief Pressure [Crack]
– Slowly close restrictor
valve until pressure gage indicates relief valve has
cracked open.
Relief Pressure [Static] – After cracking pressure is
reached, further adjust restrictor valve until flow gage
indicates relief valve is fully open.
Return Pressure [PSI]
– Record the pressure
measured in the return line. Measuring point for gage
must be located near the motor's outlet port.
If troubleshooting, include all parts associated with
the auxiliary circuit to exclude any possibility of a
collapsed hose or other fault or malfunction.