- 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 "
ReferenceDisassembly and Assembly, RENR6485, "414E, 416E, 420E, 422E, 428E, 430E, 432E, 434E, 442E and 444E Backhoe Loaders Machine Systems"
ReferenceDisassembly and Assembly, RENR8730, "930G Wheel Loader Machine Systems "
ReferenceDisassembly 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 "
Description of Change: The adjustment plug for the margin pressure has been improved. The machining of the plug has been refined in order to reduce the possibility of oil leaks at the pump control valve.
Adaptable To: The effectivity and the adaptability of the improved 307-3049 Adjustment Plug are listed in Table 1.
| Machine | Adaptability | Effectivity |
|---|---|---|
| 414E | (S/N: ELB1-792) | (S/N: ELB793-UP) |
| 416E | (S/N: CBD1-2814) | (S/N: CBD2815-UP) |
| 416E | (S/N: SHA1-4248) | (S/N: SHA4249-UP) |
| 422E | (S/N: HBE1-2130) | (S/N: HBE2131-UP) |
| 428E | (S/N: SNL1-3125) | (S/N: SNL3126-UP) |
| 930G | (S/N: TFW1-1068) | - |
| 930G | (S/N: TWR1-3522) | - |
| 930H | (S/N: DHC1-400) | (S/N: DHC401-UP) |
| 930H | (S/N: FTD1-244) | (S/N: FTD245-UP) |
Replacing the Adjustment Plug for the Margin Pressure
- Refer to Testing and Adjusting, "Hydraulic Pump - Test and Adjust".
- Pull a vacuum on the hydraulic tank in order to minimize loss of hydraulic oil.
- Locate the pump control valve (1) on the pump. Loosen setscrew (2). See Illustration 1.
 | |
| Illustration 1 | g01621683 |
(1) Pump control valve (2) Set screw (3) Adjustment plug | |
- Note the installed depth of the adjustment plug (3) for the margin pressure inside the pump control valve. This will be helpful in order to minimize the amount of adjustment that is needed after installing the replacement adjustment plug.
- Remove adjustment plug (3) for the margin pressure. Ensure that the springs and the internal components remain in place inside the valve.
- Install the replacement plug into the pump control valve. Ensure that the O-ring seal and the backup ring are in place on the plug before you install the plug. Screw the plug into the pump control valve to the installed depth of the former plug.
- Set the margin pressure. Refer to Testing and Adjusting, "Hydraulic Pump - Test and Adjust".
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.
When you have completed the adjustments, hold adjustment plug (3) in position and tighten set screw (2) to a torque of 9.15 ± 1.65 N·m (6.75 ± 1.2 lb ft).
Note: Do not overtighten the set screw.