- Backhoe Loader:
- 414E (S/N: ELB1-UP)
- Wheel Loader:
- 930G (S/N: TWR1-UP; TFW1-UP)
- 416E (S/N: SHA1-UP; CBD1-UP)
- 422E (S/N: HBE1-UP)
- 428E (S/N: SNL1-UP)
- 930H (S/N: DHC1-UP; FTD1-UP)
ReferenceOperation and Maintenance, SEBU8289, "414E Industial Loader"
ReferenceOperation and Maintenance, SEBU7970, "416E, 422E, and 428E Backhoe Loaders"
ReferenceOperation and Maintenance, SEBU7645, "IT28G Integrated Toolcarrier and 924G, 924GZ, 928G and 930G Wheel Loaders "
ReferenceOperation and Maintenance, SEBU8354, "924H, 924HZ, 928HZ and 930H Wheel Loaders "
ReferenceFor disassembly and assembly procedures, refer to Disassembly and Assembly, RENR6485, "414E, 416E, 420E, 422E, 428E, 430E, 432E, 434E, 442E and 444E Backhoe Loaders Machine Systems".
ReferenceFor disassembly and assembly procedures, refer to Disassembly and Assembly, RENR8730, "930G Wheel Loader Machine Systems ".
ReferenceFor disassembly and assembly procedures, refer to Disassembly and Assembly, KENR7617, "924H, 924Hz, 928Hz and 930H Wheel Loaders Machine Systems ".
ReferenceTesting and Adjusting Manual, KENR5096, "414E Backhoe Loader Hydraulic and Steering System "
ReferenceTesting and Adjusting Manual, RENR6479, "416E, 422E and 428E Backhoe Loaders Hydraulic and Steering System "
ReferenceTesting and Adjusting Manual, RENR8729, "930G Wheel Loader Hydraulic System "
ReferenceTesting and Adjusting Manual, KENR7616, "930H Wheel Loader Hydraulic System "
| Machine | Adaptability | Effectivity |
|---|---|---|
| 414E | (S/N: ELB1-816) | (S/N: ELB817-UP) |
| 416E | (S/N: CBD1-3353) | (S/N: CBD3354-UP) |
| 416E | (S/N: SHA1-5179) | (S/N: SHA5180-UP) |
| 422E | (S/N: HBE1-2482) | (S/N: HBE2483-UP) |
| 428E | (S/N: SNL1-4286) | (S/N: SNL4287-UP) |
| 930G | (S/N: TFW1-1068) | - |
| 930G | (S/N: TWR1-3522) | - |
| 930H | (S/N: DHC1-868) | (S/N: DHC869-UP) |
| 930H | (S/N: FTD1-822) | (S/N: FTD823-UP) |
Introduction
The pump control valve on the implement/steering pumps can have issues with the spring guides in the load sensing valves. This can cause the load sensing spool to bind in operation which can reduce pump performance.
Replace the 248-1348 Control Valve Gp on the implement/steering pump. Refer to the following rework procedure.
Required Parts
| Required Parts | ||
| Part Number | Description | Qty |
| 248-1348 | Control Valve Gp | 1 |
Installation
 | |
| Illustration 1 | g01621724 |
(1) Implement/steering pump (2) 248-1348 Control Valve Gp (3) Adjustment plug (4) Set screw | |
- Pull a vacuum on the hydraulic tank in order to minimize loss of oil.
- Disconnect the load sensing hose at control valve (2) on the implement/steering pump. Cap the hose. The valve is mounted on the side of the pump (1). Remove the hydraulic connector fitting from the pump control valve (2). Retain the parts for reassembly.
- Remove the pump control valve from the pump by loosening and removing the four mounting screws.
- Assemble the hydraulic connector fitting to port X on the replacement pump control valve. Torque to 20 N·m (14 lb ft)
- Ensure that the four seals at the bottom of the pump control valve are securely in place. Use the four supplied screws in order to assemble the valve to the pump. Torque the screws to 6.5 N·m (5 lb ft).
- Reassemble load sensing hose to hydraulic connector fitting on the pump control valve. Torque to 25 N·m (18 lb ft)
- Refer to the Testing and Adjusting manual for your machine in order to set margin pressure.
Note: The system pressure is set at the implement valve. The high pressure cutoff is factory set and the high pressure cutoff should not be adjusted. Any attempt to adjust the high pressure cutoff may result in a valve or pump failure.
Note: Be sure to loosen side mounted setscrew (4) before turning adjustment plug (3) for the margin pressure. After the adjustment is complete, tighten the set screw to 7.5 N·m to 10.8 N·m (5.5 lb ft to 8.0 lb ft).