CASE 5468490 - Caterpillar

Table 1
REQUIRED TOOLS    
Tool    Part Number    Part Description    Qty    
A     4C-9910     Portable Hydraulic Tester
48200 kPa (7000 psi)
13 L/min to 473 L/min (4 US gpm to 125 US gpm)     1    
9U-5228 Union
(1)     2    
( 1 ) Additional fittings may be required. Check your host machine for the proper mating parts.
Illustration 1 g01959978
(1) Inlet line (2) Portable Hydraulic Tester (3) Back Pressure Gauge (4) Return line
Lower the boom to the ground and stop the engine of the host machine. Relieve the pressure from the hydraulic system. Refer to Testing and Adjusting for the host machine.Note: Before you use 4C-9910 Portable Hydraulic Tester, read the user's manual for proper utilization. Be sure to understand the operation of the tester and the maintenance of the tester before usage.
Connect 4C-9910 Portable Hydraulic Tester (2) to inlet line (1) and to return line (4) .
Start the host machine. Run the host machine at high idle until the hydraulic oil reaches the normal operating temperature of 55° 5°C (131° 9°F). All testing must be done at maximum engine rpm, maximum power level, and maximum work mode.
Gradually close the orifice valve on the hydraulic tester until operating pressure is reached. Refer to Table 2 for the operating pressure.
Table 2
    Operating Pressure    
OPEN/CLOSE OPERATION    
32000 to 35000 kPa (4640 to 5075 psi)    
ROTATE    
14000 to 22000 kPa (2030 to 3190 psi)    
Record the reading from the hydraulic flow tester. Refer to Table 3 and Table 4 for the proper specifications. If necessary, adjust the flow. Refer to Service Manual for the host machine for the proper procedure. The flow must be within the specifications at the normal operating pressure of the work tool.
Record the back pressure reading from pressure gauge (3) on the Service Record for the work tool. Refer to Operation and Maintenance Manual, "Work Tool Installation" for the service record. If the pressure exceeds the specification, check the return side of the system for a restriction.
After adjustments have been made, stop the engine on the host machine and relieve the hydraulic pressure. Remove the tooling from the hose assemblies.
Table 3
Specifications for OPEN/CLOSE OPERATION    
Sales Model    Oil Flow    Operating Pressure (1)    Maximum Recommended Back Pressure (2)    
G310 GC    
60 L/min (15.6 US gpm)    
32000 to 35000 kPa (4640 to 5075 psi)    
5000 kPa (725 psi)    
G313 GC    
60 L/min (15.6 US gpm)    
32000 to 35000 kPa (4640 to 5075 psi)    
5000 kPa (725 psi)    
G315 GC    
90 L/min (23.8 US gpm)    
32000 to 35000 kPa (4640 to 5075 psi)    
5000 kPa (725 psi)    
( 1 ) The operating pressure of the work tool will vary with the conditions: application of the work tool, the back pressure in the work tool, oil viscosity, flow rate and other factors. The operating pressure of the work tool is shown as a